Files
PolyWeather/frontend/components/dashboard/scan-terminal/temperature-chart-logic.ts
2026-06-17 01:43:34 +08:00

3582 lines
121 KiB
TypeScript

import type {
AmosData,
AirportCurrentConditions,
CityDetail,
CurrentConditions,
ScanOpportunityRow,
ForecastDay,
DailyModelForecast,
DebForecast,
DebHourlyPath,
ProbabilityBucket,
} from "@/lib/dashboard-types";
import { buildDebBaselinePath } from "@/lib/temperature-chart-paths";
import { DASHBOARD_REFRESH_POLICY_MS } from "@/lib/refresh-policy";
import { buildBrowserBackendHeaders } from "@/lib/backend-api";
import type { CityPatch } from "@/hooks/use-sse-patches";
const ROLLING_WINDOW_BEFORE_MS = 12 * 60 * 60 * 1000;
const ROLLING_WINDOW_AFTER_LIVE_MS = 2 * 60 * 60 * 1000;
const ROLLING_WINDOW_AFTER_FORECAST_MS = 8 * 60 * 60 * 1000;
const DAY_MS = 24 * 60 * 60 * 1000;
const AMSC_RUNWAY_CITIES = new Set([
"beijing", "shanghai", "guangzhou", "qingdao",
"chengdu", "chongqing", "wuhan",
]);
const SETTLEMENT_RUNWAY_PAIRS: Record<string, Array<[string, string]>> = {
shanghai: [["17L", "35R"]],
beijing: [["19", "01"]],
guangzhou: [["02L", "20R"]],
chengdu: [["02L", "20R"]],
chongqing: [["20R", "02L"]],
wuhan: [["04", "22"]],
qingdao: [["16", "34"]],
seoul: [["15R", "33L"]],
busan: [["SR", "SL"]],
};
const SETTLEMENT_RUNWAY_TARGETS: Record<string, string> = {
shanghai: "35R",
beijing: "01",
guangzhou: "02L",
chengdu: "02L",
chongqing: "02L",
wuhan: "04",
qingdao: "34",
};
function normalizeRunwayLabel(value?: string | null) {
return String(value || "").trim().toUpperCase().replace(/\s+/g, "");
}
function normalizeCityKey(value?: string | null) {
return String(value || "").trim().toLowerCase().replace(/[\s_-]+/g, "");
}
function hasRecordEntries(value: unknown) {
return Boolean(value && typeof value === "object" && Object.keys(value as Record<string, unknown>).length > 0);
}
function pairKey(pair: [string, string]) {
return pair.map(normalizeRunwayLabel).sort().join("/");
}
function settlementEndpointTempForPair(
cityKey: string,
pair: [string, string],
tdz: number | null,
end: number | null,
) {
const target = normalizeRunwayLabel(SETTLEMENT_RUNWAY_TARGETS[cityKey]);
if (!target) return null;
const first = normalizeRunwayLabel(pair[0]);
const second = normalizeRunwayLabel(pair[1]);
if (target === first) return tdz ?? end;
if (target === second) return end ?? tdz;
return null;
}
function runwaySeriesKey(rwy: string) {
return `runway_${String(rwy || "unknown")
.split("/")
.map(normalizeRunwayLabel)
.filter(Boolean)
.join("_")}`;
}
function runwaySeriesLabel(rwy: string, isSettlement: boolean, isEn: boolean) {
if (!isSettlement) return rwy;
return `${rwy} ${isEn ? "Settlement Runway" : "结算跑道"}`;
}
function isTemperatureSeriesVisibleByDefault(city: string, seriesKey: string) {
if (seriesKey.startsWith("model_curve_")) {
return normalizeCityKey(city) === "paris" && seriesKey === "model_curve_AROME HD";
}
if (seriesKey === "metar") {
const cityKey = normalizeCityKey(city);
return (
cityKey !== "hongkong" &&
cityKey !== "laufaushan" &&
cityKey !== "shenzhen"
);
}
if (seriesKey === "madis") {
return true;
}
return true;
}
function prefersHighFrequencyRunwayResolution(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
) {
const cityKey = normalizeCityKey(row?.city);
if ((SETTLEMENT_RUNWAY_PAIRS[cityKey] || []).length > 0) return true;
if (hasRecordEntries((row as any)?.runway_plate_history)) return true;
if (hasRecordEntries(hourly?.runwayPlateHistory)) return true;
if ((hourly?.runwayBandHistory || []).length > 0) return true;
if (((hourly?.amos?.runway_obs as any)?.runway_pairs || []).length > 0) return true;
return false;
}
function getVisibleTemperatureSeries(
city: string,
series: EvidenceSeries[],
userToggledKeys: Record<string, boolean>,
) {
return series.filter((item) => {
if (userToggledKeys[item.key] !== undefined) {
return userToggledKeys[item.key];
}
return isTemperatureSeriesVisibleByDefault(city, item.key);
});
}
function isIndividualRunwaySeriesKey(seriesKey: string) {
return seriesKey.startsWith("runway_") && seriesKey !== "runway_max";
}
function isSettlementRunwaySeriesKey(city: string, seriesKey: string) {
if (!isIndividualRunwaySeriesKey(seriesKey)) return false;
const cityKey = normalizeCityKey(city);
const settlementPairs = SETTLEMENT_RUNWAY_PAIRS[cityKey] || [];
if (!settlementPairs.length) return false;
const normalized = seriesKey
.replace(/^runway_/, "")
.split("_")
.map(normalizeRunwayLabel)
.filter(Boolean)
.sort()
.join("/");
return settlementPairs.some((pair) => pairKey(pair) === normalized);
}
function getTemperatureSeriesForRunwayDetailsMode(
city: string,
series: EvidenceSeries[],
showRunwayDetails: boolean,
) {
const hasRunwayMax = series.some((item) => item.key === "runway_max");
const hasSettlementRunway = series.some((item) =>
isSettlementRunwaySeriesKey(city, item.key),
);
return series.filter((item) => {
const isIndividualRunway = isIndividualRunwaySeriesKey(item.key);
if (showRunwayDetails) {
return item.key !== "runway_max";
}
if (hasSettlementRunway) {
if (item.key === "runway_max") return false;
return !isIndividualRunway || isSettlementRunwaySeriesKey(city, item.key);
}
if (!hasRunwayMax) {
return true;
}
return !isIndividualRunway;
});
}
function getActiveTemperatureSeries(
city: string,
chartSeries: EvidenceSeries[],
userToggledKeys: Record<string, boolean>,
showRunwayDetails: boolean,
) {
const modeSeries = getTemperatureSeriesForRunwayDetailsMode(
city,
chartSeries,
showRunwayDetails,
);
return getVisibleTemperatureSeries(city, modeSeries, userToggledKeys);
}
function buildRunwayPlates(
amos: AmosData | null | undefined,
row: ScanOpportunityRow | null,
settlementObs?: Array<{ ts: number; value: number }>,
) {
if (!amos) return [];
const runwayObs = amos.runway_obs || {};
const runwayPairs = runwayObs.runway_pairs || [];
const runwayTemps = runwayObs.temperatures || [];
const pointTemps = runwayObs.point_temperatures || [];
const cityKey = normalizeCityKey(row?.city);
const settlementPairs = SETTLEMENT_RUNWAY_PAIRS[cityKey] || [];
const settlementKeys = new Set(settlementPairs.map(pairKey));
const list: Array<{
rwy: string;
isSettlement: boolean;
tdzTemp: number | null;
midTemp: number | null;
endTemp: number | null;
maxTemp: number | null;
dailyHigh: number | null;
trend_15m: number | null;
}> = [];
runwayPairs.forEach((rawPair: any, index: number) => {
const pair = rawPair as [string, string];
if (!Array.isArray(pair) || pair.length < 2) return;
const isSettlement = settlementKeys.has(pairKey(pair));
const pointTemp = pointTemps[index] as any;
const tdz = validNumber(pointTemp?.tdz_temp);
const mid = validNumber(pointTemp?.mid_temp);
const end = validNumber(pointTemp?.end_temp);
const endpointTemp = isSettlement
? settlementEndpointTempForPair(cityKey, pair, tdz, end)
: null;
const aggregateRunwayTemp =
endpointTemp ??
validNumber(pointTemp?.temp) ??
validNumber(pointTemp?.target_runway_max);
const isAmosTempDewTuple = String(amos.source || "").toLowerCase() === "amos";
const historyVals = !isAmosTempDewTuple && Array.isArray(runwayTemps[index])
? (runwayTemps[index] as Array<number | null>).map(validNumber).filter((v): v is number => v !== null)
: [];
const aggregateVal = aggregateRunwayTemp !== null ? [aggregateRunwayTemp] : [];
const tdzVal = tdz !== null ? [tdz] : [];
const midVal = mid !== null ? [mid] : [];
const endVal = end !== null ? [end] : [];
const allVals = isSettlement && endpointTemp !== null
? [...historyVals, endpointTemp]
: [...historyVals, ...aggregateVal, ...tdzVal, ...midVal, ...endVal];
const maxTemp = allVals.length ? Math.max(...allVals) : null;
const dailyHigh = historyVals.length ? Math.max(...historyVals) : maxTemp;
// Calculate 15-minute trend
const latest = historyVals.length > 0 ? historyVals[historyVals.length - 1] : (tdz ?? mid ?? end ?? null);
const val15 = historyVals.length > 15 ? historyVals[historyVals.length - 16] : (historyVals.length > 0 ? historyVals[0] : null);
let trend_15m = (latest !== null && val15 !== null) ? latest - val15 : null;
if (isSettlement && settlementObs && settlementObs.length >= 2) {
const latestObs = settlementObs[settlementObs.length - 1];
const targetTs = latestObs.ts - 15 * 60 * 1000;
let closestPoint = settlementObs[0];
let minDiff = Math.abs(closestPoint.ts - targetTs);
for (let i = 1; i < settlementObs.length; i++) {
const diff = Math.abs(settlementObs[i].ts - targetTs);
if (diff < minDiff) {
minDiff = diff;
closestPoint = settlementObs[i];
}
}
if (Math.abs(closestPoint.ts - targetTs) < 5 * 60 * 1000) {
trend_15m = latestObs.value - closestPoint.value;
}
}
list.push({
rwy: `${normalizeRunwayLabel(pair[0])}/${normalizeRunwayLabel(pair[1])}`,
isSettlement,
tdzTemp: tdz,
midTemp: mid,
endTemp: end,
maxTemp,
dailyHigh,
trend_15m,
});
});
return list;
}
type ObsPoint = { time?: string | null; temp?: number | null };
type RawObsPoint = ObsPoint | [string | number | null, number | null | undefined];
type EvidenceSeries = {
key: string;
label: string;
source: string;
color: string;
dashed?: boolean;
featured?: boolean;
smooth?: boolean;
curve?: "linear" | "monotone" | "stepAfter";
connectNulls?: boolean;
showDot?: boolean;
values: Array<number | null>;
};
type LegacyGaussianProbabilitySource = {
mu?: number | null;
engine?: string | null;
calibration_mode?: string | null;
distribution?: ProbabilityBucket[];
distribution_all?: ProbabilityBucket[];
};
type ProbabilityTemperatureBand = {
key: string;
value: number;
lower: number;
upper: number;
probability: number;
label: string;
opacity: number;
};
type ProbabilityMuLine = {
value: number;
label: string;
};
type ProbabilityOverlay = {
engine: string | null;
muLine: ProbabilityMuLine | null;
bands: ProbabilityTemperatureBand[];
};
type PeakGlowState = "none" | "watch" | "near_peak" | "breakout" | "cooling";
type PeakGlowMeta = {
state: PeakGlowState;
currentTemp: number | null;
referenceHigh: number | null;
distanceToHigh: number | null;
trend30m: number | null;
trend60m: number | null;
observedHigh: number | null;
};
type RunwayHistorySeries = {
key: string;
label: string;
rwy: string;
isSettlement: boolean;
color: string;
points: Array<{ ts: number; value: number }>;
};
type TemperatureBandPoint = { ts: number; high: number; low: number; avg: number };
type LocalDayBounds = { start: number; end: number };
const MAX_OBS_POINTS = 1440;
const HOURLY_CACHE_TTL_MS = DASHBOARD_REFRESH_POLICY_MS.metar;
const SESSION_CACHE_TTL_MS = HOURLY_CACHE_TTL_MS;
const HOURLY_CACHE_STALE_TTL_MS = 6 * HOURLY_CACHE_TTL_MS;
const MAX_HOURLY_CACHE_ENTRIES = 160;
const HOURLY_FORCE_REFRESH_DEDUP_MS = 60_000;
const _hourlyCache = new Map<string, { ts: number; data: FullChartDetail }>();
const _hourlyRequestCache = new Map<string, Promise<FullChartDetail | null>>();
const MAX_HOURLY_DETAIL_CONCURRENT_REQUESTS = 3;
const HOURLY_DETAIL_REQUEST_TIMEOUT_MS = 16_000;
let _hourlyActiveDetailRequests = 0;
const _hourlyDetailRequestQueue: Array<() => void> = [];
const RUNWAY_LINE_COLORS = ["#00897b", "#d97706", "#7c3aed", "#0891b2", "#ea580c", "#64748b"];
const SHORT_RANGE_MODEL_CURVES = new Set(["AROME HD", "HRRR", "NAM", "ICON-D2", "HRDPS"]);
const SHORT_RANGE_MODEL_STALE_GRACE_MS = 2 * 60 * 60 * 1000;
const SESSION_CACHE_PREFIX = "polyweather_city_detail_v1:";
type HourlyCacheEntry = { ts: number; data: FullChartDetail };
type HourlyDetailSnapshotSource = "memory_cache" | "session_cache";
type HourlyDetailSnapshotEntry = HourlyCacheEntry & { source: HourlyDetailSnapshotSource };
type CityDetailBatchDiagnostics = Record<string, any>;
type CityDetailBatchDiagnosticsEntry = { ts: number; data: CityDetailBatchDiagnostics };
const _cityDetailBatchDiagnosticsCache = new Map<string, CityDetailBatchDiagnosticsEntry>();
function cityDetailBatchDiagnosticsKey(city: string, resolution: string) {
return `${normalizeCityKey(city)}:${resolution || "10m"}`;
}
function rememberCityDetailBatchDiagnostics(
city: string,
resolution: string,
diagnostics: unknown,
) {
if (!diagnostics || typeof diagnostics !== "object") return;
const key = cityDetailBatchDiagnosticsKey(city, resolution);
if (!key.startsWith(":")) {
_cityDetailBatchDiagnosticsCache.set(key, {
ts: Date.now(),
data: diagnostics as CityDetailBatchDiagnostics,
});
}
}
function readCityDetailBatchDiagnostics(
city: string,
resolution: string,
): CityDetailBatchDiagnostics | null {
const key = cityDetailBatchDiagnosticsKey(city, resolution);
const entry = _cityDetailBatchDiagnosticsCache.get(key);
if (!entry) return null;
if (Date.now() - Number(entry.ts || 0) >= HOURLY_CACHE_TTL_MS) {
_cityDetailBatchDiagnosticsCache.delete(key);
return null;
}
return entry.data;
}
function hourlyCacheKey(city: string, resolution: string) {
const cityKey = normalizeCityKey(city);
return cityKey ? `${cityKey}:${resolution || "10m"}` : "";
}
function hourlyCacheEntryAgeMs(entry: HourlyCacheEntry | null | undefined, now = Date.now()) {
if (!entry) return Number.POSITIVE_INFINITY;
return now - Number(entry.ts || 0);
}
function isFreshHourlyCacheEntry(
entry: HourlyCacheEntry | null | undefined,
maxAgeMs = HOURLY_CACHE_TTL_MS,
) {
const age = hourlyCacheEntryAgeMs(entry);
return Number.isFinite(age) && age >= 0 && age < maxAgeMs;
}
function isRetainedHourlyCacheEntry(
entry: HourlyCacheEntry | null | undefined,
maxAgeMs = HOURLY_CACHE_STALE_TTL_MS,
) {
const age = hourlyCacheEntryAgeMs(entry);
return Number.isFinite(age) && age >= 0 && age < maxAgeMs;
}
function isUsableHourlyDetailCacheEntry(entry: HourlyCacheEntry | null | undefined) {
return Boolean(toFullChartDetail((entry as any)?.data || null));
}
function normalizeHourlyCacheEntry(entry: unknown): HourlyCacheEntry | null {
if (!entry || typeof entry !== "object") return null;
const ts = Number((entry as any).ts || 0);
const data = toFullChartDetail((entry as any).data || null);
if (!Number.isFinite(ts) || ts <= 0 || !data) return null;
return { ts, data };
}
function pruneHourlyCache() {
for (const [key, entry] of _hourlyCache.entries()) {
const normalized = normalizeHourlyCacheEntry(entry);
if (!normalized || !isRetainedHourlyCacheEntry(normalized, HOURLY_CACHE_STALE_TTL_MS)) {
_hourlyCache.delete(key);
continue;
}
if (normalized !== entry) _hourlyCache.set(key, normalized);
}
if (_hourlyCache.size <= MAX_HOURLY_CACHE_ENTRIES) return;
const oldestFirst = Array.from(_hourlyCache.entries())
.sort((left, right) => Number(left[1].ts || 0) - Number(right[1].ts || 0));
for (const [key] of oldestFirst) {
if (_hourlyCache.size <= MAX_HOURLY_CACHE_ENTRIES) break;
_hourlyCache.delete(key);
}
}
function rememberMemoryHourlyCacheEntry(cacheKey: string, entry: HourlyCacheEntry) {
if (!cacheKey || !isUsableHourlyDetailCacheEntry(entry)) return;
_hourlyCache.set(cacheKey, entry);
pruneHourlyCache();
}
function readSessionCache(
city: string,
options: { allowStale?: boolean; maxAgeMs?: number } = {},
): HourlyCacheEntry | null {
if (typeof window === "undefined") return null;
try {
const raw = sessionStorage.getItem(`${SESSION_CACHE_PREFIX}${city}`);
if (!raw) return null;
const item = normalizeHourlyCacheEntry(JSON.parse(raw));
const maxAgeMs = options.allowStale
? HOURLY_CACHE_STALE_TTL_MS
: options.maxAgeMs ?? SESSION_CACHE_TTL_MS;
if (!item || !isRetainedHourlyCacheEntry(item, HOURLY_CACHE_STALE_TTL_MS)) {
sessionStorage.removeItem(`${SESSION_CACHE_PREFIX}${city}`);
return null;
}
if (isRetainedHourlyCacheEntry(item, maxAgeMs)) {
return item;
}
} catch {}
return null;
}
function readHourlyCacheEntry(
cacheKey: string,
options: { allowStale?: boolean; maxAgeMs?: number } = {},
): HourlyCacheEntry | null {
const cachedRaw = _hourlyCache.get(cacheKey);
const cached = normalizeHourlyCacheEntry(cachedRaw);
if (
cached &&
(options.allowStale ? isRetainedHourlyCacheEntry(cached) : isFreshHourlyCacheEntry(cached, options.maxAgeMs))
) {
if (cached !== cachedRaw) _hourlyCache.set(cacheKey, cached);
return cached;
}
if (cachedRaw && (!cached || !isRetainedHourlyCacheEntry(cached))) {
_hourlyCache.delete(cacheKey);
}
const sessionEntry = readSessionCache(cacheKey, options);
if (sessionEntry) {
rememberMemoryHourlyCacheEntry(cacheKey, sessionEntry);
return sessionEntry;
}
return null;
}
function readHourlyCacheSnapshot(
cacheKey: string,
options: { allowStale?: boolean; maxAgeMs?: number } = {},
): HourlyDetailSnapshotEntry | null {
const cachedRaw = _hourlyCache.get(cacheKey);
const cached = normalizeHourlyCacheEntry(cachedRaw);
if (
cached &&
(options.allowStale ? isRetainedHourlyCacheEntry(cached) : isFreshHourlyCacheEntry(cached, options.maxAgeMs))
) {
if (cached !== cachedRaw) _hourlyCache.set(cacheKey, cached);
return { ...cached, source: "memory_cache" };
}
if (cachedRaw && (!cached || !isRetainedHourlyCacheEntry(cached))) {
_hourlyCache.delete(cacheKey);
}
const sessionEntry = readSessionCache(cacheKey, options);
if (sessionEntry) {
rememberMemoryHourlyCacheEntry(cacheKey, sessionEntry);
return { ...sessionEntry, source: "session_cache" };
}
return null;
}
function writeSessionCache(city: string, data: FullChartDetail, ts = Date.now()) {
if (typeof window === "undefined" || !data) return;
try {
sessionStorage.setItem(
`${SESSION_CACHE_PREFIX}${city}`,
JSON.stringify({ ts, data })
);
} catch {}
}
function writeHourlyCacheEntry(cacheKey: string, data: FullChartDetail, ts = Date.now()) {
if (!cacheKey || !data) return;
rememberMemoryHourlyCacheEntry(cacheKey, { ts, data });
writeSessionCache(cacheKey, data, ts);
}
function readHourlyDetailSnapshot(
city: string,
resolution: string,
options: { allowStale?: boolean; maxAgeMs?: number } = {},
): HourlyDetailSnapshotEntry | null {
const cacheKey = hourlyCacheKey(city, resolution);
return cacheKey ? readHourlyCacheSnapshot(cacheKey, options) : null;
}
function readHourlyDetailSnapshotAgeMs(
city: string,
resolution: string,
) {
const entry = readHourlyDetailSnapshot(city, resolution, { allowStale: true });
return entry ? hourlyCacheEntryAgeMs(entry) : Number.POSITIVE_INFINITY;
}
function readCachedHourlyForInitialRow(
city: string,
preferredResolution: string,
): ChartRenderState {
const cityKey = normalizeCityKey(city);
if (!cityKey) return null;
const resolutions = [
preferredResolution,
preferredResolution === "1m" ? "10m" : "1m",
].filter((value, index, list) => value && list.indexOf(value) === index);
for (const resolution of resolutions) {
const entry = readHourlyDetailSnapshot(cityKey, resolution, { allowStale: true });
if (entry?.data) return entry.data;
}
return null;
}
function rememberHourlyDetailSnapshot(
city: string,
resolution: string,
data: FullChartDetail,
) {
const cityKey = normalizeCityKey(city);
const detail = toFullChartDetail(data);
if (!cityKey || !detail) return;
const cacheKey = hourlyCacheKey(cityKey, resolution);
writeHourlyCacheEntry(cacheKey, detail);
}
function drainHourlyDetailRequestQueue() {
while (
_hourlyActiveDetailRequests < MAX_HOURLY_DETAIL_CONCURRENT_REQUESTS &&
_hourlyDetailRequestQueue.length > 0
) {
const start = _hourlyDetailRequestQueue.shift();
if (start) start();
}
}
function runQueuedHourlyDetailRequest<T>(task: () => Promise<T>): Promise<T> {
return new Promise<T>((resolve, reject) => {
const start = () => {
_hourlyActiveDetailRequests += 1;
Promise.resolve()
.then(task)
.then(resolve, reject)
.finally(() => {
_hourlyActiveDetailRequests = Math.max(0, _hourlyActiveDetailRequests - 1);
drainHourlyDetailRequestQueue();
});
};
_hourlyDetailRequestQueue.push(start);
drainHourlyDetailRequestQueue();
});
}
export function clearCityDetailCache() {
_hourlyCache.clear();
_hourlyRequestCache.clear();
_cityDetailBatchDiagnosticsCache.clear();
if (typeof window !== "undefined") {
try {
for (let i = sessionStorage.length - 1; i >= 0; i--) {
const key = sessionStorage.key(i);
if (key && key.startsWith(SESSION_CACHE_PREFIX)) {
sessionStorage.removeItem(key);
}
}
} catch {}
}
}
function __resetHourlyDetailRequestQueueForTest() {
_hourlyActiveDetailRequests = 0;
_hourlyDetailRequestQueue.length = 0;
}
const __runQueuedHourlyDetailRequestForTest = runQueuedHourlyDetailRequest;
const __readHourlyCacheEntryForTest = readHourlyCacheEntry;
function validNumber(value: unknown): number | null {
return typeof value === "number" && Number.isFinite(value) ? value : null;
}
function getCityLocalUtcTimestamp(
value: string | number | null | undefined,
tzOffsetSeconds: number,
referenceLocalDate?: string | null
): number | null {
if (value == null) return null;
if (typeof value === "number") {
const d = new Date(value + tzOffsetSeconds * 1000);
return Date.UTC(
d.getUTCFullYear(),
d.getUTCMonth(),
d.getUTCDate(),
d.getUTCHours(),
d.getUTCMinutes(),
d.getUTCSeconds()
);
}
const raw = String(value).trim();
if (!raw) return null;
const floatingIsoDateTime = raw.match(
/^(\d{4})-(\d{2})-(\d{2})T(\d{1,2}):(\d{2})(?::(\d{2}))?$/,
);
if (floatingIsoDateTime) {
return Date.UTC(
Number(floatingIsoDateTime[1]),
Number(floatingIsoDateTime[2]) - 1,
Number(floatingIsoDateTime[3]),
Number(floatingIsoDateTime[4]),
Number(floatingIsoDateTime[5]),
floatingIsoDateTime[6] ? Number(floatingIsoDateTime[6]) : 0,
);
}
if (raw.includes("T") || raw.includes("Z") || raw.includes("-")) {
const d = new Date(raw);
if (!Number.isNaN(d.getTime())) {
const localMs = d.getTime() + tzOffsetSeconds * 1000;
const localDate = new Date(localMs);
return Date.UTC(
localDate.getUTCFullYear(),
localDate.getUTCMonth(),
localDate.getUTCDate(),
localDate.getUTCHours(),
localDate.getUTCMinutes(),
localDate.getUTCSeconds()
);
}
}
const m = raw.match(/(\d{1,2}):(\d{2})(?::(\d{2}))?/);
if (m) {
const h = +m[1];
const min = +m[2];
const sec = m[3] ? +m[3] : 0;
let year = new Date().getUTCFullYear();
let month = new Date().getUTCMonth();
let date = new Date().getUTCDate();
if (referenceLocalDate) {
const dateParts = referenceLocalDate.split("-");
if (dateParts.length === 3) {
year = parseInt(dateParts[0]);
month = parseInt(dateParts[1]) - 1;
date = parseInt(dateParts[2]);
}
}
return Date.UTC(year, month, date, h, min, sec);
}
return null;
}
function getLocalDayBounds(localDateStr: string): LocalDayBounds | null {
const match = /^(\d{4})-(\d{2})-(\d{2})$/.exec(localDateStr);
if (!match) return null;
const start = Date.UTC(
Number(match[1]),
Number(match[2]) - 1,
Number(match[3]),
0,
0,
0,
);
return Number.isFinite(start) ? { start, end: start + DAY_MS } : null;
}
function dateFromLocalTime(value?: string | null) {
const match = /^(\d{4})-(\d{2})-(\d{2})/.exec(String(value || "").trim());
return match ? `${match[1]}-${match[2]}-${match[3]}` : null;
}
function laterLocalDate(left?: string | null, right?: string | null) {
const a = String(left || "").trim();
const b = String(right || "").trim();
const isDate = (value: string) => /^\d{4}-\d{2}-\d{2}$/.test(value);
if (isDate(a) && isDate(b)) return a >= b ? a : b;
return isDate(a) ? a : isDate(b) ? b : null;
}
function resolveChartLocalDate(row: ScanOpportunityRow | null, hourly: ChartRenderState) {
const hourlyDate = hourly?.localDate || dateFromLocalTime(hourly?.localTime);
const rowDate = row?.local_date || dateFromLocalTime(row?.local_time);
return (
laterLocalDate(hourlyDate, rowDate) ||
new Date().toISOString().slice(0, 10)
);
}
function isWithinLocalDay(ts: number | null, bounds: LocalDayBounds | null) {
return ts !== null && Number.isFinite(ts) && (!bounds || (ts >= bounds.start && ts < bounds.end));
}
function filterTimelinePointsToLocalDay<T extends { ts: number }>(
points: T[],
bounds: LocalDayBounds | null,
) {
if (!bounds) return points;
return points.filter((point) => isWithinLocalDay(point.ts, bounds));
}
function filterRunwayHistoryToLocalDay(
series: RunwayHistorySeries[],
bounds: LocalDayBounds | null,
) {
if (!bounds) return series;
return series
.map((item) => ({
...item,
points: filterTimelinePointsToLocalDay(item.points, bounds),
}))
.filter((item) => item.points.length > 0);
}
function formatTimestamp(ts: number): string {
const d = new Date(ts);
return `${String(d.getUTCHours()).padStart(2, "0")}:${String(d.getUTCMinutes()).padStart(2, "0")}:${String(d.getUTCSeconds()).padStart(2, "0")}`;
}
function normalizeRawObsPoint(point: RawObsPoint): ObsPoint | null {
if (Array.isArray(point)) {
return { time: point[0] == null ? null : String(point[0]), temp: validNumber(point[1]) };
}
return point;
}
function normObs(
points: RawObsPoint[] | null | undefined,
tzOffsetSeconds: number,
limit = MAX_OBS_POINTS,
referenceLocalDate?: string | null,
) {
return (points || [])
.map(normalizeRawObsPoint)
.filter((p): p is ObsPoint => p !== null)
.filter((p) => validNumber(p.temp) !== null && p.time)
.map((p) => {
const ts = getCityLocalUtcTimestamp(p.time, tzOffsetSeconds, referenceLocalDate);
return ts === null ? null : { ts, value: Number(p.temp) };
})
.filter((p): p is { ts: number; value: number } => p !== null)
.slice(-limit);
}
function appendLatestAirportObservation(
points: RawObsPoint[] | null | undefined,
...currentSources: Array<AirportCurrentConditions | null | undefined>
): RawObsPoint[] {
const merged = [...(points || [])];
const seen = new Set(
merged
.map(normalizeRawObsPoint)
.filter((point): point is ObsPoint => point !== null)
.map((point) => `${String(point.time || "")}:${validNumber(point.temp) ?? ""}`),
);
currentSources.forEach((source) => {
const temp = validNumber(source?.temp);
const time =
(source as any)?.obs_time ??
(source as any)?.observation_time ??
(source as any)?.timestamp ??
(source as any)?.time ??
null;
if (temp === null || !time) return;
const key = `${String(time)}:${temp}`;
if (seen.has(key)) return;
seen.add(key);
merged.push({ time: String(time), temp });
});
return merged;
}
function isMgmAirportPrimary(hourly: ChartRenderState) {
const primary = hourly?.airportPrimary;
const sourceTokens = [
primary?.source_code,
primary?.source_label,
(primary as any)?.source,
].map((value) => String(value || "").toLowerCase());
return sourceTokens.some((value) => value === "mgm" || value.includes("turkey_mgm"));
}
function canonicalAirportPrimarySourceLabel(hourly: ChartRenderState) {
const primary = hourly?.airportPrimary;
const tokens = [
primary?.source_code,
(primary as any)?.source,
].map((value) => String(value || "").trim().toLowerCase());
if (tokens.some((value) => value === "mgm" || value.includes("turkey_mgm"))) return "MGM";
if (tokens.some((value) => value.includes("jma"))) return "JMA";
if (tokens.some((value) => value.includes("fmi"))) return "FMI";
if (tokens.some((value) => value.includes("knmi"))) return "KNMI";
if (tokens.some((value) => value.includes("ims"))) return "IMS";
if (tokens.some((value) => value.includes("ncm"))) return "NCM";
if (tokens.some((value) => value.includes("aeroweb"))) return "AeroWeb";
if (tokens.some((value) => value.includes("singapore_mss") || value === "mss")) return "MSS";
if (tokens.some((value) => value.includes("madis") || value.includes("noaa"))) return "NOAA MADIS";
return "";
}
function airportCodeForSeriesLabel(
hourly: ChartRenderState,
row?: ScanOpportunityRow | null,
) {
const candidates = [
hourly?.airportPrimary?.station_code,
(hourly?.airportPrimary as any)?.icao,
hourly?.settlementStationCode,
row?.metar_context?.station,
row?.icao,
row?.station_code,
row?.airport,
];
const code = candidates
.map((value) => String(value || "").trim().toUpperCase())
.find((value) => /^[A-Z0-9]{4}$/.test(value));
return code || "";
}
function isUsAirportCode(value: string) {
return /^K[A-Z0-9]{3}$/.test(String(value || "").trim().toUpperCase());
}
function isGenericAirportPrimaryLabel(label: string) {
const normalized = label.trim().toLowerCase();
return (
!normalized ||
normalized === "metar" ||
normalized === "madis" ||
normalized === "noaa madis"
);
}
function airportPrimarySeriesLabel(
hourly: ChartRenderState,
isHKO: boolean,
row?: ScanOpportunityRow | null,
) {
if (isHKO) return "HKO";
const cityKey = normalizeCityKey(row?.city);
const canonicalLabel = canonicalAirportPrimarySourceLabel(hourly);
if (canonicalLabel === "MGM") return canonicalLabel;
if ((cityKey === "ankara" || cityKey === "istanbul") && (!canonicalLabel || canonicalLabel === "NOAA MADIS")) {
return "MGM";
}
const payloadLabel = String(hourly?.airportPrimary?.source_label || "").trim();
if (payloadLabel && !isGenericAirportPrimaryLabel(payloadLabel)) return payloadLabel;
const stationCode = airportCodeForSeriesLabel(hourly, row);
const isUsAirport = isUsAirportCode(stationCode);
if (!isUsAirport) {
if (canonicalLabel && canonicalLabel !== "NOAA MADIS") return canonicalLabel;
return stationCode ? `${stationCode} METAR` : "METAR";
}
return canonicalLabel || payloadLabel || "NOAA MADIS";
}
function airportPrimaryUsesMetarFallback(
hourly: ChartRenderState,
isHKO: boolean,
row?: ScanOpportunityRow | null,
) {
if (isHKO) return false;
const cityKey = normalizeCityKey(row?.city);
if (cityKey === "ankara" || cityKey === "istanbul") return false;
const canonicalLabel = canonicalAirportPrimarySourceLabel(hourly);
if (canonicalLabel && canonicalLabel !== "NOAA MADIS") return false;
const payloadLabel = String(hourly?.airportPrimary?.source_label || "").trim();
return !payloadLabel || isGenericAirportPrimaryLabel(payloadLabel);
}
function metarStationCodeForSeries(row?: ScanOpportunityRow | null, hourly?: ChartRenderState) {
const candidates = [
row?.metar_context?.station,
hourly?.settlementStationCode,
row?.station_code,
row?.icao,
];
return candidates
.map((value) => String(value || "").trim().toUpperCase())
.find((value) => /^[A-Z0-9]{4}$/.test(value)) || "";
}
function airportPrimaryMatchesMetarStation(hourly: ChartRenderState, row?: ScanOpportunityRow | null) {
const primaryCode = airportCodeForSeriesLabel(hourly, row);
const metarCode = metarStationCodeForSeries(row, hourly);
return Boolean(primaryCode && metarCode && primaryCode === metarCode);
}
function airportPrimaryObservationPoints(hourly: ChartRenderState) {
return appendLatestAirportObservation(
hourly?.airportPrimaryTodayObs,
hourly?.airportPrimary,
...(isMgmAirportPrimary(hourly) ? [] : [hourly?.airportCurrent]),
);
}
function seriesStats(values: Array<number | null>) {
const nums = values.filter((v): v is number => validNumber(v) !== null);
const latest = nums.length ? nums[nums.length - 1] : null;
const high = nums.length ? Math.max(...nums) : null;
const first15 = nums.length > 1 ? nums[Math.max(0, nums.length - 15)] : null;
const delta15 = latest !== null && first15 !== null ? latest - first15 : null;
return { latest, high, delta15 };
}
function latestObservationValue(obs: Array<{ ts: number; value: number }>) {
if (!obs.length) return null;
return obs.reduce((latest, point) => (point.ts > latest.ts ? point : latest), obs[0]).value;
}
function maxObservationValue(obs: Array<{ ts: number; value: number }>) {
if (!obs.length) return null;
return Math.max(...obs.map((point) => point.value));
}
function getRunwayHistoryObservationMetrics(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
) {
const tzOffset = row?.tz_offset_seconds ?? 0;
const localDateStr = resolveChartLocalDate(row, hourly);
const localDayBounds = getLocalDayBounds(localDateStr);
const runwayHistorySeries = buildRunwayHistorySeries(row, hourly, tzOffset, localDateStr, 1)
.map((item) => ({
...item,
points: filterTimelinePointsToLocalDay(item.points, localDayBounds),
}))
.filter((item) => item.points.length > 0);
const settlementSeries = runwayHistorySeries.filter((item) => item.isSettlement);
const candidateSeries = settlementSeries.length ? settlementSeries : runwayHistorySeries;
const points = candidateSeries.flatMap((item) => item.points);
if (!points.length) return { latest: null, high: null };
const latestTs = Math.max(...points.map((point) => point.ts));
const latestValues = points
.filter((point) => point.ts === latestTs)
.map((point) => point.value);
return {
latest: latestValues.length ? Math.max(...latestValues) : null,
high: Math.max(...points.map((point) => point.value)),
};
}
function hasRenderableLineSeries(series: EvidenceSeries[]) {
return series.some(
(item) => item.values.filter((value) => validNumber(value) !== null).length >= 2,
);
}
function observationSetContains(
superset: Array<{ ts: number; value: number }>,
subset: Array<{ ts: number; value: number }>,
) {
if (!superset.length || !subset.length) return false;
return subset.every((point) =>
superset.some((candidate) => candidate.ts === point.ts && Math.abs(candidate.value - point.value) < 0.01),
);
}
function getObservationDisplayMetrics(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
settlementPlate?: { maxTemp: number | null } | null,
) {
const tzOffset = row?.tz_offset_seconds ?? 0;
const localDateStr = resolveChartLocalDate(row, hourly);
const settlementObs = normObs(hourly?.settlementTodayObs || row?.settlement_today_obs || row?.metar_context?.settlement_today_obs, tzOffset, MAX_OBS_POINTS, localDateStr);
const metarObs = normObs(hourly?.metarTodayObs || row?.metar_today_obs || row?.metar_context?.today_obs || row?.metar_recent_obs || row?.metar_context?.recent_obs, tzOffset, MAX_OBS_POINTS, localDateStr);
const madisObs = normObs(
airportPrimaryObservationPoints(hourly),
tzOffset,
MAX_OBS_POINTS,
localDateStr,
);
const latestSettlement = latestObservationValue(settlementObs);
const latestMetar = latestObservationValue(metarObs);
const latestMadis = latestObservationValue(madisObs);
const highSettlement = maxObservationValue(settlementObs);
const highMetar = maxObservationValue(metarObs);
const highMadis = maxObservationValue(madisObs);
const airportCurrentTemp = validNumber(hourly?.airportCurrent?.temp) ?? validNumber(hourly?.airportPrimary?.temp);
const airportHigh = validNumber(hourly?.airportCurrent?.max_so_far) ?? validNumber(hourly?.airportPrimary?.max_so_far);
const rowMetarHigh = validNumber(row?.metar_context?.airport_max_so_far ?? row?.metar_context?.max_temp ?? row?.current_max_so_far);
const runwayHistoryMetrics = getRunwayHistoryObservationMetrics(row, hourly);
const settlementCityKey = normalizeCityKey(row?.city);
const isShenzhen = settlementCityKey === 'shenzhen';
const isHKO = (settlementCityKey === 'hongkong' || settlementCityKey === 'laufaushan'
|| (row?.city || '').toLowerCase().includes('hong kong')
|| (row?.city || '').toLowerCase().includes('lau fau shan')) && !isShenzhen;
let currentRunwayTemp: number | null = null;
let observedHighRunway: number | null = null;
if (isHKO) {
currentRunwayTemp =
latestMadis ??
latestSettlement ??
latestMetar ??
airportCurrentTemp ??
validNumber(row?.current_temp) ??
null;
observedHighRunway =
highMadis ??
highSettlement ??
airportHigh ??
highMetar ??
validNumber(row?.current_max_so_far) ??
currentRunwayTemp ??
null;
} else {
currentRunwayTemp =
runwayHistoryMetrics.latest ??
settlementPlate?.maxTemp ??
validNumber(hourly?.amos?.temp_c) ??
latestSettlement ??
latestMetar ??
airportCurrentTemp ??
validNumber(row?.current_temp) ??
null;
observedHighRunway =
runwayHistoryMetrics.high ??
settlementPlate?.maxTemp ??
highSettlement ??
airportHigh ??
highMetar ??
validNumber(row?.current_max_so_far) ??
currentRunwayTemp ??
null;
}
const currentMetarTemp =
latestSettlement ??
latestMetar ??
airportCurrentTemp ??
null;
const observedHighMetar = airportHigh ?? highSettlement ?? highMetar ?? rowMetarHigh ?? null;
return { currentMetarTemp, currentRunwayTemp, observedHighMetar, observedHighRunway };
}
function selectDisplayRunwayTemp(
liveTemp: number | null,
currentRunwayTemp: number | null,
_hasRunwayData: boolean,
) {
if (currentRunwayTemp !== null) return currentRunwayTemp;
return liveTemp;
}
function selectCompactSecondaryTemp({
isHKO,
isShenzhen,
displayMetarTemp,
observedHighMetar,
}: {
isHKO: boolean;
isShenzhen: boolean;
displayMetarTemp: number | null;
observedHighMetar: number | null;
}) {
if (isShenzhen) {
return observedHighMetar;
}
// The compact secondary label is an observation cadence, so it must not display a daily high.
if (isHKO) {
return displayMetarTemp;
}
return displayMetarTemp;
}
function isSettlementRunway(row: ScanOpportunityRow | null, rwy: string) {
const cityKey = normalizeCityKey(row?.city);
const settlementPairs = SETTLEMENT_RUNWAY_PAIRS[cityKey] || [];
if (!settlementPairs.length) return false;
const normalized = rwy
.split("/")
.map(normalizeRunwayLabel)
.filter(Boolean)
.sort()
.join("/");
return settlementPairs.some((pair) => pairKey(pair) === normalized);
}
function runwayLabelFromPair(rawPair: unknown, index: number) {
if (Array.isArray(rawPair) && rawPair.length >= 2) {
return `${normalizeRunwayLabel(rawPair[0])}/${normalizeRunwayLabel(rawPair[1])}`;
}
return `RWY ${index + 1}`;
}
function runwayTemperatureFromPairTuple(rawTemp: unknown) {
if (Array.isArray(rawTemp)) return validNumber(rawTemp[0]);
return validNumber(rawTemp);
}
function runwayPatchPointsFromRunwayObs(runwayObs: any) {
const directPoints = Array.isArray(runwayObs?.point_temperatures)
? runwayObs.point_temperatures
: [];
if (directPoints.length) return directPoints;
const runwayPairs = Array.isArray(runwayObs?.runway_pairs)
? runwayObs.runway_pairs
: [];
const temperatures = Array.isArray(runwayObs?.temperatures)
? runwayObs.temperatures
: [];
return runwayPairs
.map((pair: unknown, index: number) => {
const temp = runwayTemperatureFromPairTuple(temperatures[index]);
if (temp === null) return null;
return {
runway: runwayLabelFromPair(pair, index),
temp,
target_runway_max: temp,
};
})
.filter((point: any): point is { runway: string; temp: number; target_runway_max: number } => point !== null);
}
function rowCurrentObservation(row: ScanOpportunityRow | null) {
if (!row) return null;
const metarContext = row.metar_context || null;
const temp =
validNumber(row.current_temp) ??
validNumber(metarContext?.airport_current_temp) ??
validNumber(metarContext?.last_temp);
const time =
metarContext?.airport_obs_time ||
metarContext?.last_observation_time ||
metarContext?.last_time ||
row.local_time ||
null;
if (temp === null || !time) return null;
const maxSoFar =
validNumber(row.current_max_so_far) ??
validNumber(metarContext?.airport_max_so_far) ??
validNumber(metarContext?.max_temp) ??
temp;
return {
temp,
time: String(time),
maxSoFar,
sourceCode: String(metarContext?.source || "").trim() || null,
sourceLabel: String(metarContext?.station_label || metarContext?.source || "").trim() || null,
};
}
function appendRawObservationPoint(
points: RawObsPoint[] | null | undefined,
time: string,
temp: number,
) {
const merged = [...(points || [])];
const normalizedTime = String(time || "").trim();
if (!normalizedTime) return merged;
const exists = merged
.map(normalizeRawObsPoint)
.some((point) => point?.time === normalizedTime && validNumber(point.temp) === temp);
if (!exists) merged.push([normalizedTime, temp]);
return merged.slice(-MAX_OBS_POINTS);
}
function rawObservationKey(point: RawObsPoint) {
const normalized = normalizeRawObsPoint(point);
const time = String(normalized?.time || "").trim();
const temp = validNumber(normalized?.temp);
if (!time || temp === null) return "";
return `${time}:${temp}`;
}
function mergeRawObservationPoints(
base: RawObsPoint[] | null | undefined,
live: RawObsPoint[] | null | undefined,
) {
const merged: RawObsPoint[] = [];
const seen = new Set<string>();
[...(base || []), ...(live || [])].forEach((point) => {
const key = rawObservationKey(point);
if (!key || seen.has(key)) return;
seen.add(key);
merged.push(point);
});
return merged.length ? merged.slice(-MAX_OBS_POINTS) : undefined;
}
function observationTimeRank(
value: string | number | null | undefined,
row: ScanOpportunityRow | null,
localDateStr: string | null | undefined,
) {
const localRank = getCityLocalUtcTimestamp(
value,
row?.tz_offset_seconds ?? 0,
localDateStr || row?.local_date || null,
);
if (localRank !== null) return localRank;
if (typeof value === "number" && Number.isFinite(value)) return value;
const parsed = Date.parse(String(value || ""));
return Number.isFinite(parsed) ? parsed : null;
}
function conditionObservationTime(source: AirportCurrentConditions | null | undefined) {
return (
(source as any)?.obs_time ??
(source as any)?.observation_time ??
(source as any)?.timestamp ??
(source as any)?.time ??
null
);
}
function mergeAirportCondition(
base: AirportCurrentConditions | null | undefined,
live: AirportCurrentConditions | null | undefined,
row: ScanOpportunityRow | null,
localDateStr: string | null | undefined,
) {
if (!base) return live || null;
if (!live) return base || null;
const baseTime = observationTimeRank(conditionObservationTime(base), row, localDateStr);
const liveTime = observationTimeRank(conditionObservationTime(live), row, localDateStr);
const liveIsAtLeastAsFresh = liveTime === null || baseTime === null || liveTime >= baseTime;
const maxSoFar = Math.max(
validNumber(base.max_so_far) ?? validNumber(base.temp) ?? Number.NEGATIVE_INFINITY,
validNumber(live.max_so_far) ?? validNumber(live.temp) ?? Number.NEGATIVE_INFINITY,
);
const merged = liveIsAtLeastAsFresh ? { ...base, ...live } : { ...live, ...base };
if (Number.isFinite(maxSoFar)) {
merged.max_so_far = maxSoFar;
}
return merged;
}
function runwayHistoryPointKey(point: Record<string, unknown>) {
const time = String(
point.timestamp ??
point.time ??
point.observed_at ??
"",
).trim();
const value = parseRunwayHistoryValue(point);
if (!time || value === null) return "";
return `${time}:${value}`;
}
function mergeRunwayPlateHistory(
base: Record<string, Array<Record<string, unknown>>> | undefined,
live: Record<string, Array<Record<string, unknown>>> | undefined,
) {
if (!base && !live) return undefined;
const result: Record<string, Array<Record<string, unknown>>> = {};
Object.entries(base || {}).forEach(([rwy, points]) => {
if (Array.isArray(points)) result[rwy] = [...points];
});
Object.entries(live || {}).forEach(([rwy, points]) => {
if (!Array.isArray(points)) return;
const merged = result[rwy] ? [...result[rwy]] : [];
const seen = new Set(merged.map(runwayHistoryPointKey).filter(Boolean));
points.forEach((point) => {
const key = runwayHistoryPointKey(point);
if (key && seen.has(key)) return;
if (key) seen.add(key);
merged.push(point);
});
result[rwy] = merged.slice(-MAX_OBS_POINTS);
});
return Object.keys(result).length ? result : undefined;
}
function hasFullHourlyDetailPayload(hourly: ChartRenderState) {
if (!hourly) return false;
const probabilityBuckets =
hourly.probabilities?.distribution_all ||
hourly.probabilities?.distribution ||
[];
return Boolean(
(hourly.times || []).length > 0 ||
(hourly.temps || []).length > 0 ||
(hourly.debHourlyPath?.times || []).length > 0 ||
Object.keys(hourly.modelCurves || {}).length > 0 ||
(hourly.forecastDaily || []).length > 0 ||
Object.keys(hourly.multiModelDaily || {}).length > 0 ||
probabilityBuckets.length > 0,
);
}
function toFullChartDetail(hourly: ChartRenderState): FullChartDetail | null {
if (!hourly || !hasFullHourlyDetailPayload(hourly)) return null;
if ((hourly as any).__detailKind === "full_chart_detail") return hourly as FullChartDetail;
return {
...hourly,
__detailKind: "full_chart_detail",
};
}
function hasArrayItems<T>(value: T[] | null | undefined): value is T[] {
return Array.isArray(value) && value.length > 0;
}
function hasProbabilityPayload(value: LegacyGaussianProbabilitySource | null | undefined) {
const distribution =
value?.distribution_all ||
value?.distribution ||
[];
return Boolean(value?.mu != null || distribution.length > 0 || value?.engine);
}
function preferNumber(
primary: number | null | undefined,
fallback: number | null | undefined,
) {
return validNumber(primary) ?? validNumber(fallback) ?? null;
}
function preferArray<T>(
primary: T[] | null | undefined,
fallback: T[] | null | undefined,
) {
return hasArrayItems(primary) ? primary : fallback;
}
function preferRecord<T>(
primary: Record<string, T> | null | undefined,
fallback: Record<string, T> | null | undefined,
) {
return hasRecordEntries(primary) ? primary : fallback;
}
function latestRawObservationRank(
points: RawObsPoint[] | null | undefined,
row: ScanOpportunityRow | null,
localDateStr: string | null | undefined,
) {
let latest: number | null = null;
(points || []).forEach((point) => {
const normalized = normalizeRawObsPoint(point);
const rank = observationTimeRank(normalized?.time, row, localDateStr);
if (rank !== null) latest = latest === null ? rank : Math.max(latest, rank);
});
return latest;
}
function latestRunwayHistoryRank(
history: Record<string, Array<Record<string, unknown>>> | undefined,
row: ScanOpportunityRow | null,
localDateStr: string | null | undefined,
) {
let latest: number | null = null;
Object.values(history || {}).forEach((points) => {
if (!Array.isArray(points)) return;
points.forEach((point) => {
const rawTime = point.timestamp ??
point.time ??
point.observed_at ??
null;
const rank = observationTimeRank(
typeof rawTime === "string" || typeof rawTime === "number" ? rawTime : null,
row,
localDateStr,
);
if (rank !== null) latest = latest === null ? rank : Math.max(latest, rank);
});
});
return latest;
}
function latestHourlyObservationRank(
hourly: ChartRenderState,
row: ScanOpportunityRow | null,
) {
if (!hourly) return null;
const localDateStr = hourly.localDate || row?.local_date || null;
const ranks = [
observationTimeRank(hourly.localTime, row, localDateStr),
observationTimeRank(conditionObservationTime(hourly.airportCurrent), row, localDateStr),
observationTimeRank(conditionObservationTime(hourly.airportPrimary), row, localDateStr),
latestRawObservationRank(hourly.airportPrimaryTodayObs, row, localDateStr),
latestRawObservationRank(hourly.metarTodayObs, row, localDateStr),
latestRawObservationRank(hourly.settlementTodayObs, row, localDateStr),
latestRunwayHistoryRank(hourly.runwayPlateHistory, row, localDateStr),
].filter((rank): rank is number => rank !== null);
return ranks.length ? Math.max(...ranks) : null;
}
function shouldKeepLiveHourlyDetailPayload(
base: ChartRenderState,
live: ChartRenderState,
row: ScanOpportunityRow | null,
) {
if (!base || !live) return false;
if (!hasFullHourlyDetailPayload(base) || !hasFullHourlyDetailPayload(live)) return false;
const baseRank = latestHourlyObservationRank(base, row);
const liveRank = latestHourlyObservationRank(live, row);
return baseRank !== null && liveRank !== null && liveRank > baseRank;
}
function hourlyLocalDatesConflict(
base: ChartRenderState,
live: ChartRenderState,
row: ScanOpportunityRow | null,
) {
const baseDate = String(base?.localDate || "").trim();
const liveDate = String(live?.localDate || row?.local_date || "").trim();
return Boolean(baseDate && liveDate && baseDate !== liveDate);
}
function rowLooksLikeRunwaySensor(row: ScanOpportunityRow | null) {
const cityKey = normalizeCityKey(row?.city);
const sourceText = [
row?.metar_context?.source,
row?.metar_context?.station,
row?.metar_context?.station_label,
row?.airport,
]
.map((value) => String(value || "").toLowerCase())
.join(" ");
return (
AMSC_RUNWAY_CITIES.has(cityKey) ||
sourceText.includes("amsc") ||
sourceText.includes("awos") ||
sourceText.includes("runway")
);
}
function seedRunwayPlateHistoryFromRow(
row: ScanOpportunityRow | null,
existing: Record<string, Array<Record<string, unknown>>> | undefined,
) {
const current = rowCurrentObservation(row);
const cityKey = normalizeCityKey(row?.city);
const settlementPairs = SETTLEMENT_RUNWAY_PAIRS[cityKey] || [];
if (!current || !settlementPairs.length || !rowLooksLikeRunwaySensor(row)) {
return existing;
}
const history: Record<string, Array<Record<string, unknown>>> = {};
Object.entries(existing || {}).forEach(([rwy, points]) => {
if (Array.isArray(points)) history[rwy] = [...points];
});
settlementPairs.forEach((pair) => {
const rwy = `${normalizeRunwayLabel(pair[0])}/${normalizeRunwayLabel(pair[1])}`;
const rwyHistory = history[rwy] || [];
const exists = rwyHistory.some((point) => {
return point.timestamp === current.time || point.time === current.time || point.observed_at === current.time;
});
if (exists) return;
history[rwy] = [
...rwyHistory,
{
timestamp: current.time,
temp_c: current.temp,
value: current.temp,
},
].slice(-MAX_OBS_POINTS);
});
return Object.keys(history).length ? history : existing;
}
type ChartRenderState = {
forecastTodayHigh?: number | null;
debPrediction?: number | null;
debQuality?: Pick<DebForecast, "quality_tier" | "recommendation" | "recent_hit_rate" | "recent_samples" | "recent_hits" | "recent_mae"> | null;
debHourlyPath?: DebHourlyPath | null;
localDate?: string | null;
localTime?: string | null;
times: string[];
temps: Array<number | null>;
modelTimes?: string[];
modelCurves?: Record<string, Array<number | null>>;
runwayPlateHistory?: Record<string, Array<Record<string, unknown>>>;
runwayBandHistory?: Array<{ time: string; high_temp: number; low_temp: number; avg_temp: number }>;
amos?: AmosData | null;
current?: CurrentConditions | null;
airportCurrent?: AirportCurrentConditions | null;
airportPrimary?: AirportCurrentConditions | null;
wundergroundCurrent?: AirportCurrentConditions | null;
forecastDaily?: ForecastDay[];
multiModelDaily?: Record<string, DailyModelForecast>;
probabilities?: LegacyGaussianProbabilitySource | null;
settlementTodayObs?: ObsPoint[];
settlementStationCode?: string | null;
settlementStationLabel?: string | null;
metarTodayObs?: ObsPoint[];
airportPrimaryTodayObs?: RawObsPoint[];
} | null;
type FullChartDetail = NonNullable<ChartRenderState> & {
readonly __detailKind: "full_chart_detail";
};
function seedChartRenderStateFromRow(row: ScanOpportunityRow | null): ChartRenderState {
if (!row) return null;
const current = rowCurrentObservation(row);
const sourceCode = current?.sourceCode || undefined;
const sourceLabel = current?.sourceLabel || undefined;
const airportCurrent = current
? {
temp: current.temp,
obs_time: current.time,
max_so_far: current.maxSoFar,
source_code: sourceCode,
source_label: sourceLabel,
}
: null;
const airportPrimary = current
? {
temp: current.temp,
obs_time: current.time,
max_so_far: current.maxSoFar,
source_code: sourceCode,
source_label: sourceLabel,
source: sourceCode,
}
: null;
const seededRunwayPlateHistory = seedRunwayPlateHistoryFromRow(
row,
(row as any)?.runway_plate_history || undefined,
);
return {
forecastTodayHigh: null,
debPrediction: validNumber(row.deb_prediction),
debQuality: null,
debHourlyPath: null,
localDate: row.local_date || null,
localTime: row.local_time || null,
times: [],
temps: [],
modelTimes: undefined,
modelCurves: undefined,
runwayPlateHistory: seededRunwayPlateHistory,
runwayBandHistory: undefined,
amos: null,
current: null,
airportCurrent,
airportPrimary,
wundergroundCurrent: (row as any)?.wunderground_current || null,
forecastDaily: [],
multiModelDaily: {},
probabilities: {
engine: row.probability_engine || null,
distribution: row.distribution_preview || [],
distribution_all: row.distribution_full || row.distribution_preview || [],
},
settlementTodayObs: row.settlement_today_obs || row.metar_context?.settlement_today_obs || undefined,
settlementStationCode: row.metar_context?.station || row.station_code || row.icao || null,
metarTodayObs: row.metar_today_obs || row.metar_context?.today_obs || row.metar_recent_obs || row.metar_context?.recent_obs || undefined,
airportPrimaryTodayObs: current
? appendRawObservationPoint(undefined, current.time, current.temp)
: undefined,
};
}
function mergeHourlyWithLiveObservations(
base: ChartRenderState,
live: ChartRenderState,
row: ScanOpportunityRow | null,
): ChartRenderState {
if (!base) return live;
if (!live) return base;
if (hourlyLocalDatesConflict(base, live, row)) return base;
const detailSource = shouldKeepLiveHourlyDetailPayload(base, live, row) ? live : base;
const forecastFallback = detailSource === base ? live : base;
const localDate = detailSource.localDate || base.localDate || live.localDate || row?.local_date || null;
const runwayPlateHistory = mergeRunwayPlateHistory(base.runwayPlateHistory, live.runwayPlateHistory);
const amos = runwayPlateHistory
? {
...(detailSource.amos || {}),
runway_plate_history: runwayPlateHistory,
} as AmosData
: detailSource.amos;
return {
...detailSource,
localDate,
localTime: live.localTime || base.localTime,
forecastTodayHigh: preferNumber(detailSource.forecastTodayHigh, forecastFallback.forecastTodayHigh),
debPrediction: preferNumber(detailSource.debPrediction, forecastFallback.debPrediction),
debQuality: hasRecordEntries(detailSource.debQuality) ? detailSource.debQuality : forecastFallback.debQuality,
debHourlyPath: detailSource.debHourlyPath || forecastFallback.debHourlyPath || null,
times: preferArray(detailSource.times, forecastFallback.times) || [],
temps: preferArray(detailSource.temps, forecastFallback.temps) || [],
modelTimes: preferArray(detailSource.modelTimes, forecastFallback.modelTimes) || undefined,
modelCurves: preferRecord(detailSource.modelCurves, forecastFallback.modelCurves) || undefined,
forecastDaily: preferArray(detailSource.forecastDaily, forecastFallback.forecastDaily) || [],
multiModelDaily: preferRecord(detailSource.multiModelDaily, forecastFallback.multiModelDaily) || {},
probabilities: hasProbabilityPayload(detailSource.probabilities)
? detailSource.probabilities
: forecastFallback.probabilities || null,
runwayPlateHistory,
amos,
airportCurrent: mergeAirportCondition(base.airportCurrent, live.airportCurrent, row, localDate),
airportPrimary: mergeAirportCondition(base.airportPrimary, live.airportPrimary, row, localDate),
settlementTodayObs: mergeRawObservationPoints(base.settlementTodayObs, live.settlementTodayObs) as ObsPoint[] | undefined,
settlementStationCode: detailSource.settlementStationCode || forecastFallback.settlementStationCode || row?.metar_context?.station || null,
settlementStationLabel: detailSource.settlementStationLabel || forecastFallback.settlementStationLabel || null,
metarTodayObs: mergeRawObservationPoints(base.metarTodayObs, live.metarTodayObs) as ObsPoint[] | undefined,
airportPrimaryTodayObs: mergeRawObservationPoints(
base.airportPrimaryTodayObs,
live.airportPrimaryTodayObs,
),
};
}
function mergeObservationSnapshotIntoHourly(
prev: ChartRenderState,
snapshot: ObservationSnapshot | null | undefined,
): ChartRenderState {
const live = observationSnapshotToHourly(snapshot);
if (!prev) return live;
if (!live) return prev;
return mergeHourlyWithLiveObservations(prev, live, null);
}
function mergeRowObservationIntoHourly(
prev: ChartRenderState,
row: ScanOpportunityRow | null,
): ChartRenderState {
const seeded = seedChartRenderStateFromRow(row);
if (!prev) return seeded;
return mergeHourlyWithLiveObservations(prev, seeded, row);
}
function selectInitialHourlyForRowChange({
cachedHourly,
previousCity,
previousHourly,
row,
}: {
cachedHourly?: ChartRenderState;
previousCity?: string | null;
previousHourly?: ChartRenderState;
row: ScanOpportunityRow | null;
}): ChartRenderState {
const seeded = seedChartRenderStateFromRow(row);
const nextCity = normalizeCityKey(row?.city);
if (!nextCity) return seeded;
if (cachedHourly) {
return mergeHourlyWithLiveObservations(cachedHourly, seeded, row);
}
if (previousHourly && normalizeCityKey(previousCity) === nextCity) {
return mergeHourlyWithLiveObservations(previousHourly, seeded, row);
}
return seeded;
}
type ChartDetailFetchOptions = {
bypassLocalCache?: boolean;
ignoreCache?: boolean;
resolution?: string;
};
type CityObservationPayload = {
city?: string | null;
local_date?: string | null;
local_time?: string | null;
current?: Record<string, any> | null;
airport_current?: Record<string, any> | null;
airport_primary?: Record<string, any> | null;
amos?: AmosData | null;
runway_plate_history?: Record<string, Array<Record<string, unknown>>> | null;
runway_points?: Array<Record<string, unknown>>;
metar_today_obs?: Array<Record<string, any>>;
timeseries?: {
metar_today_obs?: Array<Record<string, any>>;
} | null;
};
type ObservationSnapshot = CityObservationPayload & {
readonly __observationKind: "observation_snapshot";
};
type CityDetailBatchPayload = {
cities?: string[];
details?: Record<string, CityDetail | null | undefined>;
diagnostics?: CityDetailBatchDiagnostics;
errors?: Record<string, string>;
missing?: string[];
partial?: boolean;
};
type CityDetailBatchWaiter = {
resolve: (value: FullChartDetail | null) => void;
reject: (reason?: unknown) => void;
};
type CityDetailBatchQueue = {
cities: Set<string>;
waiters: Map<string, CityDetailBatchWaiter[]>;
timer: ReturnType<typeof setTimeout> | null;
resolution: string;
forceRefresh: boolean;
};
const CITY_DETAIL_BATCH_WINDOW_MS = 100;
const CITY_DETAIL_BATCH_MAX_CITIES = 12;
const _cityDetailBatchQueues = new Map<string, CityDetailBatchQueue>();
function normalizeObservationCondition(block: Record<string, any> | null | undefined): AirportCurrentConditions | null {
if (!block || typeof block !== "object") return null;
const temp = validNumber(block.temp);
const obsTime = String(block.obs_time || block.observed_at || block.observation_time || block.time || "").trim();
if (temp === null || !obsTime) return null;
return {
...(block as AirportCurrentConditions),
temp,
obs_time: obsTime,
max_so_far: validNumber(block.max_so_far) ?? validNumber(block.max_temp_so_far) ?? temp,
source_code: String(block.source_code || block.source || "").trim() || null,
source_label: String(block.source_label || block.settlement_source_label || block.source || "").trim() || null,
station_code: String(block.station_code || block.icao || "").trim() || null,
station_label: String(block.station_label || block.station_name || "").trim() || null,
};
}
function normalizeObservationPoint(point: Record<string, any>): ObsPoint | null {
const temp = validNumber(point.temp);
const time = String(point.time || point.obs_time || point.observed_at || point.observation_time || "").trim();
if (temp === null || !time) return null;
return { time, temp };
}
function normalizeObservationRunwayHistory(
history: CityObservationPayload["runway_plate_history"],
runwayPoints: CityObservationPayload["runway_points"],
) {
const normalized: Record<string, Array<Record<string, unknown>>> = {};
Object.entries(history || {}).forEach(([runway, points]) => {
if (!Array.isArray(points)) return;
const normalizedPoints = points
.map((point): Record<string, unknown> | null => {
if (!point || typeof point !== "object") return null;
const value =
parseRunwayHistoryValue(point) ??
validNumber((point as any).target_runway_max) ??
validNumber((point as any).tdz_temp) ??
validNumber((point as any).end_temp);
const time = String((point as any).timestamp || (point as any).time || (point as any).observed_at || "").trim();
if (value === null || !time) return null;
return {
...point,
timestamp: time,
value,
temp_c: value,
};
})
.filter((point): point is Record<string, unknown> => point !== null);
if (normalizedPoints.length) normalized[runway] = normalizedPoints;
});
for (const point of runwayPoints || []) {
if (!point || typeof point !== "object") continue;
const runway = String((point as any).runway || "").trim().toUpperCase();
if (!runway) continue;
const value =
parseRunwayHistoryValue(point) ??
validNumber((point as any).target_runway_max) ??
validNumber((point as any).tdz_temp) ??
validNumber((point as any).end_temp);
const time = String((point as any).timestamp || (point as any).time || (point as any).observed_at || "").trim();
if (value === null || !time) continue;
normalized[runway] = [
...(normalized[runway] || []),
{
...point,
timestamp: time,
value,
temp_c: value,
},
].slice(-MAX_OBS_POINTS);
}
return Object.keys(normalized).length ? normalized : undefined;
}
function observationPayloadToSnapshot(payload: CityObservationPayload | null | undefined): ObservationSnapshot | null {
if (!payload || typeof payload !== "object") return null;
if ((payload as any).__observationKind === "observation_snapshot") return payload as ObservationSnapshot;
return {
...payload,
__observationKind: "observation_snapshot",
};
}
function observationSnapshotToHourly(snapshot: ObservationSnapshot | null | undefined): ChartRenderState {
if (!snapshot || typeof snapshot !== "object") return null;
const airportCurrent = normalizeObservationCondition(snapshot.airport_current || snapshot.current);
const airportPrimary = normalizeObservationCondition(snapshot.airport_primary || snapshot.airport_current || snapshot.current);
const current = snapshot.current && typeof snapshot.current === "object"
? {
...(snapshot.current as CurrentConditions),
temp: validNumber(snapshot.current.temp),
}
: null;
const metarTodayObs = [
...((snapshot.timeseries?.metar_today_obs || []) as Array<Record<string, any>>),
...((snapshot.metar_today_obs || []) as Array<Record<string, any>>),
]
.map(normalizeObservationPoint)
.filter((point): point is ObsPoint => point !== null);
const airportPrimaryTodayObs = (airportPrimary?.obs_time && validNumber(airportPrimary.temp) !== null)
? appendRawObservationPoint(undefined, airportPrimary.obs_time, Number(airportPrimary.temp))
: undefined;
return {
forecastTodayHigh: null,
debPrediction: null,
debQuality: null,
debHourlyPath: null,
localDate: snapshot.local_date || null,
localTime: snapshot.local_time || airportPrimary?.obs_time || airportCurrent?.obs_time || null,
times: [],
temps: [],
modelTimes: undefined,
modelCurves: undefined,
forecastDaily: [],
multiModelDaily: {},
probabilities: null,
runwayPlateHistory: normalizeObservationRunwayHistory(snapshot.runway_plate_history, snapshot.runway_points),
amos: snapshot.amos || null,
current,
airportCurrent,
airportPrimary,
metarTodayObs: metarTodayObs.length ? metarTodayObs : undefined,
airportPrimaryTodayObs,
};
}
function parseFullChartDetailFromCityDetail(json: CityDetail | null): FullChartDetail | null {
const hourlySource = (json as any)?.hourly ?? (json as any)?.timeseries?.hourly;
if (!json || !hourlySource) return null;
const parsed: ChartRenderState = {
forecastTodayHigh: json.forecast?.today_high ?? null,
debPrediction: json.deb?.prediction ?? (json as any)?.overview?.deb_prediction ?? null,
debQuality: json.deb ? {
quality_tier: json.deb.quality_tier,
recommendation: json.deb.recommendation,
recent_hit_rate: json.deb.recent_hit_rate,
recent_samples: json.deb.recent_samples,
recent_hits: json.deb.recent_hits,
recent_mae: json.deb.recent_mae,
} : null,
debHourlyPath: json.deb?.hourly_path || null,
localDate: json.local_date || (json as any)?.overview?.local_date || null,
localTime: json.local_time || null,
times: hourlySource.times || [],
temps: hourlySource.temps || [],
modelTimes: (json.models_hourly ?? (json as any)?.timeseries?.models_hourly)?.times || undefined,
modelCurves: (json.models_hourly ?? (json as any)?.timeseries?.models_hourly)?.curves || undefined,
runwayPlateHistory: (json as any)?.runway_plate_history || (json.amos as any)?.runway_plate_history || undefined,
runwayBandHistory: (json as any)?.runway_band_history || undefined,
amos: json.amos || null,
current: json.current || null,
airportCurrent: json.airport_current || null,
airportPrimary: json.airport_primary || null,
wundergroundCurrent: (json as any).wunderground_current || (json as any)?.official?.wunderground_current || null,
forecastDaily: json.forecast?.daily || [],
multiModelDaily: json.multi_model_daily || {},
probabilities: json.probabilities || null,
settlementTodayObs: (json as any).timeseries?.settlement_today_obs || (json as any)?.settlement_today_obs || undefined,
settlementStationCode: (json as any)?.settlement_station?.settlement_station_code || (json as any)?.settlement_station?.airport_code || null,
settlementStationLabel: (json as any)?.settlement_station?.settlement_station_label || null,
metarTodayObs: (json as any).timeseries?.metar_today_obs || (json as any)?.metar_today_obs || undefined,
airportPrimaryTodayObs: (json as any)?.official?.airport_primary_today_obs || (json as any)?.airport_primary_today_obs || undefined,
};
return toFullChartDetail(parsed);
}
function preserveCachedRunwayHistory(cacheKey: string, data: FullChartDetail): FullChartDetail {
if (!data) return data;
const cached = readHourlyCacheEntry(cacheKey, { allowStale: true })?.data;
if (!cached || hourlyLocalDatesConflict(cached, data, null)) return data;
const cachedHistory =
cached.runwayPlateHistory ||
((cached.amos as any)?.runway_plate_history as Record<string, Array<Record<string, unknown>>> | undefined);
const incomingHistory =
data.runwayPlateHistory ||
((data.amos as any)?.runway_plate_history as Record<string, Array<Record<string, unknown>>> | undefined);
const runwayPlateHistory = mergeRunwayPlateHistory(cachedHistory, incomingHistory);
if (!runwayPlateHistory) return data;
return {
...data,
runwayPlateHistory,
amos: {
...(data.amos || {}),
runway_plate_history: runwayPlateHistory,
} as AmosData,
__detailKind: "full_chart_detail",
};
}
function primeCityDetailCache(
city: string,
resolution: string,
detail: CityDetail | null | undefined,
): FullChartDetail | null {
let data = parseFullChartDetailFromCityDetail(detail || null);
if (!data) return null;
const cacheKey = hourlyCacheKey(city, resolution);
data = preserveCachedRunwayHistory(cacheKey, data);
writeHourlyCacheEntry(cacheKey, data);
return data;
}
function cityDetailBatchQueueKey(resolution: string, forceRefresh: boolean) {
return `${resolution}:${forceRefresh ? "force" : "cached"}`;
}
function queueCityDetailBatch(
city: string,
resolution: string,
forceRefresh: boolean,
): Promise<FullChartDetail | null> {
return new Promise<FullChartDetail | null>((resolve, reject) => {
const queueKey = cityDetailBatchQueueKey(resolution, forceRefresh);
const queue = _cityDetailBatchQueues.get(queueKey) || {
cities: new Set<string>(),
waiters: new Map<string, CityDetailBatchWaiter[]>(),
timer: null,
resolution,
forceRefresh,
};
_cityDetailBatchQueues.set(queueKey, queue);
const cityWaiters = queue.waiters.get(city) || [];
cityWaiters.push({ resolve, reject });
queue.waiters.set(city, cityWaiters);
queue.cities.add(city);
if (queue.timer === null) {
queue.timer = setTimeout(() => flushCityDetailBatch(queueKey), CITY_DETAIL_BATCH_WINDOW_MS);
}
if (queue.cities.size >= CITY_DETAIL_BATCH_MAX_CITIES) {
flushCityDetailBatch(queueKey);
}
});
}
function resolveBatchWaiters(
waiters: CityDetailBatchWaiter[] | undefined,
value: FullChartDetail | null,
) {
(waiters || []).forEach((waiter) => waiter.resolve(value));
}
function resolveCityDetailFromBatch(
details: Record<string, CityDetail | null | undefined> | undefined,
city: string,
) {
if (!details) return undefined;
const trimmed = String(city || "").trim();
const direct =
details[city] ||
details[trimmed] ||
details[trimmed.toLowerCase()] ||
details[normalizeCityKey(trimmed)];
if (direct) return direct;
const requestedKey = normalizeCityKey(trimmed);
if (!requestedKey) return undefined;
for (const [key, detail] of Object.entries(details)) {
if (!detail) continue;
if (normalizeCityKey(key) === requestedKey) return detail;
const detailCity = (detail as any).city || detail.name || detail.display_name;
if (normalizeCityKey(detailCity) === requestedKey) return detail;
}
return undefined;
}
async function flushCityDetailBatch(queueKey: string) {
const queue = _cityDetailBatchQueues.get(queueKey);
if (!queue) return;
_cityDetailBatchQueues.delete(queueKey);
if (queue.timer !== null) {
clearTimeout(queue.timer);
queue.timer = null;
}
const cities = Array.from(queue.cities).sort();
if (!cities.length) return;
try {
const payload = await fetchCityDetailBatchWithTimeout(
cities,
queue.resolution,
queue.forceRefresh,
);
if (!payload) {
resolveAllBatchWaitersAsNull(cities, queue);
return;
}
const details = payload?.details || {};
const diagnostics = payload?.diagnostics || null;
const partialMissingCities =
payload?.partial === true
? new Set((payload.missing || []).map((city) => normalizeCityKey(city)))
: new Set<string>();
await Promise.all(
cities.map(async (city) => {
const waiters = queue.waiters.get(city);
rememberCityDetailBatchDiagnostics(city, queue.resolution, diagnostics);
const detail = resolveCityDetailFromBatch(details, city);
const data = primeCityDetailCache(city, queue.resolution, detail);
if (data) {
resolveBatchWaiters(waiters, data);
return;
}
if (partialMissingCities.has(normalizeCityKey(city))) {
resolveBatchWaiters(waiters, null);
return;
}
resolveBatchWaiters(waiters, null);
}),
);
} catch (error) {
resolveAllBatchWaitersAsNull(cities, queue);
}
}
function resolveAllBatchWaitersAsNull(
cities: string[],
queue: CityDetailBatchQueue,
) {
cities.forEach((city) => {
resolveBatchWaiters(queue.waiters.get(city), null);
});
}
async function fetchCityDetailBatchWithTimeout(
cities: string[],
resolution: string,
forceRefresh: boolean,
) {
const controller = new AbortController();
const timeoutId = globalThis.setTimeout(() => controller.abort(), HOURLY_DETAIL_REQUEST_TIMEOUT_MS);
const params = new URLSearchParams({
cities: cities.join(","),
depth: "full",
force_refresh: forceRefresh ? "true" : "false",
limit: String(Math.max(cities.length, CITY_DETAIL_BATCH_MAX_CITIES)),
resolution,
scope: "chart",
});
const headers = await buildBrowserBackendHeaders({ Accept: "application/json" });
return fetch(`/api/cities/detail-batch?${params.toString()}`, {
headers,
signal: controller.signal,
})
.then(async (res) => {
if (!res.ok) return null;
return res.json() as Promise<CityDetailBatchPayload>;
})
.catch(() => null)
.finally(() => globalThis.clearTimeout(timeoutId));
}
async function fetchLiveObservationForCity(city: string): Promise<ObservationSnapshot | null> {
const headers = await buildBrowserBackendHeaders({ Accept: "application/json" });
return fetch(`/api/city/${encodeURIComponent(city)}/observation`, {
cache: "no-store",
headers,
})
.then(async (res) => {
if (!res.ok) return null;
const payload = await res.json() as CityObservationPayload;
return observationPayloadToSnapshot(payload);
})
.catch(() => null);
}
async function fetchFullChartDetailForCity(
city: string,
options: ChartDetailFetchOptions = {},
): Promise<FullChartDetail | null> {
const resParam = options.resolution || "10m";
const cacheKey = hourlyCacheKey(city, resParam);
const forceRefresh = Boolean(options.ignoreCache);
const bypassLocalCache = forceRefresh || Boolean(options.bypassLocalCache);
if (!bypassLocalCache) {
const cached = readHourlyCacheEntry(cacheKey);
if (cached) {
return cached.data;
}
} else if (forceRefresh) {
const recentlyRefreshed = readHourlyCacheEntry(cacheKey, {
maxAgeMs: HOURLY_FORCE_REFRESH_DEDUP_MS,
});
if (recentlyRefreshed) {
return recentlyRefreshed.data;
}
}
const requestKey = forceRefresh
? `${city}:${resParam}:live`
: bypassLocalCache
? `${city}:${resParam}:revalidate`
: `${city}:${resParam}`;
const pending = _hourlyRequestCache.get(requestKey);
if (pending) return pending;
const request = queueCityDetailBatch(city, resParam, forceRefresh)
.finally(() => {
_hourlyRequestCache.delete(requestKey);
});
_hourlyRequestCache.set(requestKey, request);
return request;
}
function shouldPollLiveChart({
city,
compact,
isActive,
isMaximized,
}: {
city: string;
compact: boolean;
isActive: boolean;
isMaximized: boolean;
}) {
return Boolean(city) && (compact || isActive || isMaximized);
}
function getLiveObservationLabels(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
) {
const normalizedKey = normalizeCityKey(row?.city);
const runwaySensorCities = new Set([
"beijing", "shanghai", "guangzhou", "qingdao",
"chengdu", "chongqing", "wuhan",
"seoul", "busan",
]);
const weatherStationCities = new Set(["ankara", "istanbul"]);
const isShenzhen = normalizedKey === "shenzhen";
const isHKO = (normalizedKey === "hongkong" || normalizedKey === "laufaushan") && !isShenzhen;
const isTokyo = normalizedKey === "tokyo";
const isSingapore = normalizedKey === "singapore";
const isParis = normalizedKey === "paris";
const isTaipei = normalizedKey === "taipei";
const sourceTokens = [
(hourly?.airportPrimary as any)?.source,
hourly?.airportPrimary?.source_code,
hourly?.airportPrimary?.source_label,
(hourly?.airportCurrent as any)?.source,
(hourly?.airportCurrent as any)?.source_code,
(hourly?.airportCurrent as any)?.source_label,
(row as any)?.station_source_code,
(row as any)?.network_provider,
(row as any)?.network_provider_label,
row?.metar_context?.source,
row?.metar_context?.station,
row?.metar_context?.station_label,
]
.map((value) => String(value || "").trim().toLowerCase())
.filter(Boolean)
.join(" ");
const hasRealStationNetwork =
weatherStationCities.has(normalizedKey) ||
/\b(mgm|turkey_mgm|jma_amedas|fmi|knmi|cowin_obs|ims|ncm|aeroweb|madis_hfmetar|singapore_mss)\b/.test(sourceTokens);
const isRunwaySensorCity = runwaySensorCities.has(normalizedKey);
const isAmscRunwayCity =
AMSC_RUNWAY_CITIES.has(normalizedKey) ||
/\bamsc(?:_awos)?\b|\bawos\b/.test(sourceTokens);
const isWeatherStation = !runwaySensorCities.has(normalizedKey)
&& !isHKO && !isShenzhen && !isTokyo && !isSingapore && !isParis && !isTaipei
&& hasRealStationNetwork;
const runwayHeaderLabel = isShenzhen ? "天文台实测 (10分钟)"
: isHKO ? "参考站点 (1分钟)"
: isTokyo ? "机场气象站 (10分钟)"
: isSingapore ? "航站楼温度"
: isParis ? "官方机场观测 (15分钟)"
: isTaipei ? "CWA (10分钟)"
: isWeatherStation ? "气象站实测"
: isRunwaySensorCity ? `跑道实测 (${isAmscRunwayCity ? "3分钟" : "1分钟"})`
: "机场报文";
const metarHeaderLabel = (isShenzhen || isHKO) ? "天文台实测 (10分钟)"
: "METAR 结算 (30分钟)";
const runwayHighLabel = isShenzhen ? "天文台实测"
: isHKO ? "参考站点"
: isTokyo ? "机场气象站"
: isSingapore ? "航站楼"
: isParis ? "官方机场观测"
: isTaipei ? "CWA"
: isWeatherStation ? "气象站"
: isRunwaySensorCity ? "跑道实测"
: "机场报文";
const metarHighLabel = isShenzhen ? "天文台"
: isHKO ? "天文台"
: "METAR 官方";
return {
isHKO,
isParis,
isShenzhen,
isTaipei,
isWeatherStation,
metarHeaderLabel,
metarHighLabel,
runwayHeaderLabel,
runwayHighLabel,
};
}
function mergePatchIntoHourly(
prev: ChartRenderState,
patch: CityPatch,
): ChartRenderState {
const changes = patch.changes || {};
const tempValue = validNumber(changes.temp);
const observedAtUtc = typeof changes.observed_at_utc === "string" ? changes.observed_at_utc : null;
const obsTime = observedAtUtc || (typeof changes.obs_time === "string" ? changes.obs_time : null);
const source = typeof changes.source === "string" ? changes.source : "";
const explicitHourlyPatch = changes.hourly && typeof changes.hourly === "object"
? changes.hourly as Partial<NonNullable<ChartRenderState>>
: {};
const next: NonNullable<ChartRenderState> = {
...(prev || {
forecastTodayHigh: null,
debPrediction: null,
debQuality: null,
localDate: null,
localTime: null,
times: [],
temps: [],
forecastDaily: [],
multiModelDaily: {},
probabilities: null,
}),
...explicitHourlyPatch,
};
if (typeof (changes as any).local_date === "string") {
next.localDate = (changes as any).local_date;
}
if (typeof (changes as any).city_local_date === "string") {
next.localDate = (changes as any).city_local_date;
}
if (changes.amos && typeof changes.amos === "object") {
const oldAmos = prev?.amos || {};
const newAmos = changes.amos as AmosData;
next.amos = {
...oldAmos,
...newAmos,
} as any;
}
// Preserve runwayPlateHistory in next state
if (prev?.runwayPlateHistory) {
next.runwayPlateHistory = prev.runwayPlateHistory;
}
// Append new runway observations to history if available in the patch
const amosChanges = changes.amos as Record<string, any> | undefined;
const obsTimeVal = obsTime || amosChanges?.observation_time || amosChanges?.observation_time_local;
const runwayObs = amosChanges?.runway_obs;
const runwayPoints = Array.isArray(changes.runway_points)
? changes.runway_points
: runwayObs
? runwayPatchPointsFromRunwayObs(runwayObs)
: [];
if (runwayPoints.length && obsTimeVal) {
const history: Record<string, Array<Record<string, unknown>>> = {};
const sourceHistory = next.runwayPlateHistory || (next.amos as any)?.runway_plate_history || {};
// Copy existing history points
Object.entries(sourceHistory).forEach(([rwy, pts]) => {
if (Array.isArray(pts)) {
history[rwy] = [...pts];
}
});
// Append new points from point_temperatures
runwayPoints.forEach((pt: any) => {
const rwy = pt.runway || "";
if (!rwy) return;
const tempVal = validNumber(pt.temp) ?? validNumber(pt.target_runway_max) ?? validNumber(pt.tdz_temp) ?? validNumber(pt.end_temp);
if (tempVal === null) return;
const rwyHistory = history[rwy] || [];
const exists = rwyHistory.some((p: any) => p.timestamp === obsTimeVal || p.time === obsTimeVal || p.observed_at === obsTimeVal);
if (!exists) {
rwyHistory.push({
timestamp: obsTimeVal,
temp_c: tempVal,
value: tempVal,
});
history[rwy] = rwyHistory.slice(-MAX_OBS_POINTS);
}
});
next.runwayPlateHistory = history;
next.amos = {
...(next.amos || {}),
runway_obs: {
...((next.amos as any)?.runway_obs || {}),
point_temperatures: runwayPoints,
},
} as any;
if (next.amos) {
(next.amos as any).runway_plate_history = history;
}
}
if (tempValue !== null) {
next.airportCurrent = {
...(next.airportCurrent || {}),
obs_time: obsTime || next.airportCurrent?.obs_time || null,
temp: tempValue,
max_so_far: Math.max(
tempValue,
validNumber(next.airportCurrent?.max_so_far) ?? tempValue,
),
};
next.airportPrimary = {
...(next.airportPrimary || {}),
obs_time: obsTime || next.airportPrimary?.obs_time || null,
temp: tempValue,
max_so_far: Math.max(
tempValue,
validNumber(next.airportPrimary?.max_so_far) ?? tempValue,
),
source_label: next.airportPrimary?.source_label || source || undefined,
};
}
if (tempValue !== null && obsTime) {
const obsPoint: RawObsPoint = [obsTime, tempValue];
const currentObs = Array.isArray(next.airportPrimaryTodayObs)
? next.airportPrimaryTodayObs
: [];
next.airportPrimaryTodayObs = [...currentObs, obsPoint].slice(-MAX_OBS_POINTS);
}
return next;
}
function parseRunwayHistoryValue(point: Record<string, unknown>) {
return validNumber(point.max_temp_c) ?? validNumber(point.temp_c) ?? validNumber(point.temp) ?? validNumber(point.value);
}
function parseRunwayHistoryTime(
point: Record<string, unknown>,
tzOffset: number,
localDateStr: string,
) {
return getCityLocalUtcTimestamp(
(point.timestamp as string | number | null | undefined) ??
(point.time as string | number | null | undefined) ??
(point.observed_at as string | number | null | undefined),
tzOffset,
localDateStr,
);
}
function buildRunwayHistorySeries(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
tzOffset: number,
localDateStr: string,
minPoints = 2,
isEn = false,
): RunwayHistorySeries[] {
const directHistory =
hourly?.runwayPlateHistory ??
((hourly?.amos as any)?.runway_plate_history as Record<string, Array<Record<string, unknown>>> | undefined) ??
((row as any)?.runway_plate_history as Record<string, Array<Record<string, unknown>>> | undefined);
if (directHistory && typeof directHistory === "object") {
const directSeries = Object.entries(directHistory)
.map(([rwy, rawPoints], index) => {
const normalizedRwy = String(rwy || `RWY ${index + 1}`).trim();
const points = (Array.isArray(rawPoints) ? rawPoints : [])
.map((point) => {
const ts = parseRunwayHistoryTime(point, tzOffset, localDateStr);
const value = parseRunwayHistoryValue(point);
return ts !== null && value !== null ? { ts, value } : null;
})
.filter((point): point is { ts: number; value: number } => point !== null)
.sort((a, b) => a.ts - b.ts)
.slice(-MAX_OBS_POINTS);
const isSettlement = isSettlementRunway(row, normalizedRwy);
return {
key: runwaySeriesKey(normalizedRwy),
label: runwaySeriesLabel(normalizedRwy, isSettlement, isEn),
rwy: normalizedRwy,
isSettlement,
color: isSettlement ? "#009688" : RUNWAY_LINE_COLORS[index % RUNWAY_LINE_COLORS.length],
points,
};
})
.filter((series) => series.points.length >= minPoints);
if (directSeries.length) return directSeries;
}
const amos = hourly?.amos;
const runwayObs = amos?.runway_obs;
const runwayPairs = runwayObs?.runway_pairs || [];
const runwayTemps = runwayObs?.temperatures || [];
const pointTemps = runwayObs?.point_temperatures || [];
const isAmosTempDewTuple = String(amos?.source || "").toLowerCase() === "amos";
const anchor =
getCityLocalUtcTimestamp(amos?.observation_time || amos?.observation_time_local || hourly?.localTime || row?.local_time, tzOffset, localDateStr) ??
getCityLocalUtcTimestamp(row?.local_time, tzOffset, localDateStr);
if (!anchor || !Array.isArray(runwayTemps)) return [];
return runwayTemps
.map((rawTemps, index) => {
if (!Array.isArray(rawTemps)) return null;
const rawPair = runwayPairs[index];
const rwy = runwayLabelFromPair(rawPair, index);
const isSettlement = isSettlementRunway(row, rwy);
const pointTemp = Array.isArray(pointTemps) ? (pointTemps[index] as any) : null;
const pair = Array.isArray(rawPair) && rawPair.length >= 2
? [String(rawPair[0]), String(rawPair[1])] as [string, string]
: rwy.split("/").length >= 2
? [rwy.split("/")[0], rwy.split("/")[1]] as [string, string]
: [rwy, rwy] as [string, string];
const tdz = validNumber(pointTemp?.tdz_temp);
const mid = validNumber(pointTemp?.mid_temp);
const end = validNumber(pointTemp?.end_temp);
const endpointTemp = isSettlement
? settlementEndpointTempForPair(normalizeCityKey(row?.city), pair, tdz, end)
: null;
const aggregateRunwayTemp =
endpointTemp ??
validNumber(pointTemp?.temp) ??
validNumber(pointTemp?.target_runway_max) ??
(isAmosTempDewTuple ? runwayTemperatureFromPairTuple(rawTemps) : null);
const snapshotValues = [
aggregateRunwayTemp,
...(isSettlement && endpointTemp !== null ? [] : [tdz, mid, end]),
].filter((value): value is number => value !== null);
const samples = isAmosTempDewTuple
? []
: rawTemps.map(validNumber).filter((value): value is number => value !== null);
const valuesForLine = samples.length > 1
? samples
: snapshotValues.length > 1
? snapshotValues
: samples.length === 1
? [samples[0], samples[0]]
: snapshotValues.length === 1
? [snapshotValues[0], snapshotValues[0]]
: [];
const values = valuesForLine
.map((value, pointIndex) => {
const minutesFromEnd = (valuesForLine.length - 1 - pointIndex);
return {
ts: anchor - minutesFromEnd * 60 * 1000,
value,
};
})
.filter((point) => validNumber(point.value) !== null);
if (values.length < minPoints) return null;
return {
key: runwaySeriesKey(rwy),
label: runwaySeriesLabel(rwy, isSettlement, isEn),
rwy,
isSettlement,
color: isSettlement ? "#009688" : RUNWAY_LINE_COLORS[index % RUNWAY_LINE_COLORS.length],
points: values.slice(-MAX_OBS_POINTS),
};
})
.filter((series): series is RunwayHistorySeries => series !== null);
}
function generateDailySlots(localDateStr: string, daysCount: number): string[] {
const parts = localDateStr.split("-");
if (parts.length !== 3) return [];
const year = parseInt(parts[0], 10);
const month = parseInt(parts[1], 10) - 1;
const day = parseInt(parts[2], 10);
const dates: string[] = [];
for (let i = 0; i < daysCount; i++) {
const d = new Date(Date.UTC(year, month, day + i));
const yyyy = d.getUTCFullYear();
const mm = String(d.getUTCMonth() + 1).padStart(2, "0");
const dd = String(d.getUTCDate()).padStart(2, "0");
dates.push(`${yyyy}-${mm}-${dd}`);
}
return dates;
}
function formatDailyDateLabel(dateStr: string): string {
const parts = dateStr.split("-");
if (parts.length !== 3) return dateStr;
return `${parts[1]}/${parts[2]}`;
}
function buildDailyChartData(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
daysCount: number,
): { data: Array<Record<string, string | number | null>>; series: EvidenceSeries[] } {
const localDateStr = resolveChartLocalDate(row, hourly);
const slots = generateDailySlots(localDateStr, daysCount);
const series: EvidenceSeries[] = [
{
key: "deb_prediction",
label: "DEB Daily Max",
source: "DEB",
color: "#f97316", // orange
featured: true,
values: [],
},
{
key: "max_temp",
label: "Model Daily Max",
source: "Standard Forecast",
color: "#dc2626", // red
dashed: true,
values: [],
},
{
key: "min_temp",
label: "Model Daily Min",
source: "Standard Forecast",
color: "#2563eb", // blue
dashed: true,
values: [],
},
];
const data = slots.map((dateStr) => {
const dayForecast = hourly?.forecastDaily?.find((d) => d.date === dateStr);
const dayMultiModel = hourly?.multiModelDaily?.[dateStr];
const label = formatDailyDateLabel(dateStr);
const debMax = validNumber(dayMultiModel?.deb?.prediction) ??
(dateStr === localDateStr ? validNumber(hourly?.debPrediction) ?? validNumber(row?.deb_prediction) : null);
const maxTemp = validNumber(dayForecast?.max_temp);
const minTemp = validNumber(dayForecast?.min_temp);
return {
label,
date: dateStr,
deb_prediction: debMax,
max_temp: maxTemp,
min_temp: minTemp,
};
});
// Populate series values
series[0].values = data.map((d) => d.deb_prediction);
series[1].values = data.map((d) => d.max_temp);
series[2].values = data.map((d) => d.min_temp);
// Filter out series that have no valid data points
const activeSeries = series.filter((s) => s.values.some((v) => v !== null));
return { data, series: activeSeries };
}
function binBandObservationsToSlots(
slots: number[],
obs: TemperatureBandPoint[],
): Array<[number, number] | null> {
const result: Array<[number, number] | null> = new Array(slots.length).fill(null);
for (const point of obs) {
for (let i = slots.length - 1; i >= 0; i--) {
if (point.ts >= slots[i]) {
result[i] = [point.low, point.high];
break;
}
}
}
return result;
}
function sortedTimeline(timestamps: Iterable<number>) {
return Array.from(new Set(Array.from(timestamps).filter((ts) => Number.isFinite(ts)))).sort((a, b) => a - b);
}
function addLocalDayAxisSlots(timeline: Set<number>, bounds: LocalDayBounds | null) {
if (!bounds) return;
for (let ts = bounds.start; ts < bounds.end; ts += 60 * 60 * 1000) {
timeline.add(ts);
}
}
function resolveFullDayFallbackAnchor(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
tzOffsetSeconds: number,
localDateStr: string,
) {
return (
getCityLocalUtcTimestamp(hourly?.localTime || row?.local_time, tzOffsetSeconds, localDateStr) ??
Date.UTC(
Number(localDateStr.slice(0, 4)) || new Date().getUTCFullYear(),
(Number(localDateStr.slice(5, 7)) || 1) - 1,
Number(localDateStr.slice(8, 10)) || new Date().getUTCDate(),
12,
0,
0,
)
);
}
function ensureRenderableTimeline(timeline: number[], fallbackAnchor: number) {
if (timeline.length >= 2) return timeline;
const anchor = timeline[0] ?? fallbackAnchor;
return [anchor - 30 * 60 * 1000, anchor];
}
function buildTimelineIndex(timeline: number[]) {
return new Map(timeline.map((ts, index) => [ts, index]));
}
function valuesAtTimeline(
size: number,
indexByTs: Map<number, number>,
obs: Array<{ ts: number; value: number }>,
) {
const result: Array<number | null> = new Array(size).fill(null);
obs.forEach((point) => {
const idx = indexByTs.get(point.ts);
if (idx !== undefined) result[idx] = point.value;
});
return result;
}
function bandValuesAtTimeline(
size: number,
indexByTs: Map<number, number>,
obs: TemperatureBandPoint[],
) {
const result: Array<[number, number] | null> = new Array(size).fill(null);
obs.forEach((point) => {
const idx = indexByTs.get(point.ts);
if (idx !== undefined) result[idx] = [point.low, point.high];
});
return result;
}
function valuesForHourlyTimes(
size: number,
indexByTs: Map<number, number>,
times: string[] | undefined,
values: Array<number | null | undefined>,
tzOffsetSeconds: number,
localDateStr: string,
bounds: LocalDayBounds | null = null,
) {
const result: Array<number | null> = new Array(size).fill(null);
(times || []).forEach((time, index) => {
const ts = getCityLocalUtcTimestamp(time, tzOffsetSeconds, localDateStr);
if (!isWithinLocalDay(ts, bounds)) return;
if (ts === null) return;
const value = validNumber(values[index]);
if (value === null) return;
const idx = indexByTs.get(ts);
if (idx !== undefined) result[idx] = value;
});
return result;
}
function addHourlyTimesToTimeline(
timeline: Set<number>,
times: string[] | undefined,
values: Array<number | null | undefined> | undefined,
tzOffsetSeconds: number,
localDateStr: string,
bounds: LocalDayBounds | null = null,
) {
if (!times?.length || !values?.length) return;
times.forEach((time, index) => {
if (validNumber(values[index]) === null) return;
const ts = getCityLocalUtcTimestamp(time, tzOffsetSeconds, localDateStr);
if (ts !== null && isWithinLocalDay(ts, bounds)) timeline.add(ts);
});
}
function resolveModelCurveTimes(
hourly: ChartRenderState,
modelTemps: Array<number | null>,
) {
if (hourly?.modelTimes?.length) return hourly.modelTimes;
return hourly?.times?.length === modelTemps.length ? hourly.times : [];
}
function isShortRangeModelCurve(model: string) {
return SHORT_RANGE_MODEL_CURVES.has(String(model || "").trim().toUpperCase());
}
function shouldRenderModelCurve(
model: string,
values: Array<number | null>,
timeline: number[],
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
tzOffsetSeconds: number,
localDateStr: string,
) {
if (!isShortRangeModelCurve(model)) return true;
const currentTs = getCityLocalUtcTimestamp(
hourly?.localTime || row?.local_time,
tzOffsetSeconds,
localDateStr,
);
if (currentTs === null) return true;
let latestValidTs: number | null = null;
values.forEach((value, index) => {
if (validNumber(value) === null) return;
const ts = timeline[index];
if (!Number.isFinite(ts)) return;
latestValidTs = latestValidTs === null ? ts : Math.max(latestValidTs, ts);
});
return latestValidTs !== null && latestValidTs >= currentTs - SHORT_RANGE_MODEL_STALE_GRACE_MS;
}
function probabilityBucketValue(bucket: ProbabilityBucket) {
return validNumber(bucket.value ?? (bucket as any).temp ?? (bucket as any).temperature);
}
function probabilityBucketProbability(bucket: ProbabilityBucket) {
const raw = validNumber(bucket.probability ?? (bucket as any).model_probability);
if (raw === null) return null;
return raw > 1 ? raw / 100 : raw;
}
function probabilityBucketRange(bucket: ProbabilityBucket, value: number) {
const rawRange = String(bucket.range || bucket.bucket || "").trim();
const rangeMatch = rawRange.match(/(-?\d+(?:\.\d+)?)\s*~\s*(-?\d+(?:\.\d+)?)/);
if (rangeMatch) {
const lower = Number(rangeMatch[1]);
const upper = Number(rangeMatch[2]);
if (Number.isFinite(lower) && Number.isFinite(upper) && upper > lower) {
return { lower, upper };
}
}
return {
lower: Number((value - 0.5).toFixed(2)),
upper: Number((value + 0.5).toFixed(2)),
};
}
function buildLegacyGaussianProbabilityOverlay(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
): ProbabilityOverlay | null {
const source = hourly?.probabilities || null;
const rowBuckets = ((row as any)?.distribution_full || (row as any)?.distribution_preview || []) as ProbabilityBucket[];
const buckets = (
source?.distribution_all?.length
? source.distribution_all
: source?.distribution?.length
? source.distribution
: rowBuckets
) || [];
const engine = source?.engine || row?.probability_engine || (buckets.length ? "legacy" : null);
if (engine && String(engine).toLowerCase() !== "legacy") return null;
const tempSymbol = row?.temp_symbol || "°C";
const bands = buckets
.map((bucket, index) => {
const value = probabilityBucketValue(bucket);
const probability = probabilityBucketProbability(bucket);
if (value === null || probability === null || probability <= 0) return null;
const { lower, upper } = probabilityBucketRange(bucket, value);
return {
key: `legacy_probability_${value}_${index}`,
value,
lower,
upper,
probability,
label: `${value}${tempSymbol} ${Math.round(probability * 100)}%`,
opacity: Number(Math.min(0.16, Math.max(0.035, 0.04 + probability * 0.22)).toFixed(3)),
};
})
.filter((band): band is ProbabilityTemperatureBand => band !== null)
.sort((a, b) => a.value - b.value);
const mu = validNumber(source?.mu);
const muLine = mu === null
? null
: {
value: mu,
label: `Gaussian μ ${mu.toFixed(1)}${tempSymbol}`,
};
if (!bands.length && !muLine) return null;
return {
engine: engine || "legacy",
muLine,
bands,
};
}
function buildFullDayChartData(
row: ScanOpportunityRow | null,
hourly: ChartRenderState,
isEn: boolean,
): { data: Array<Record<string, any>>; series: EvidenceSeries[]; probabilityOverlay: ProbabilityOverlay | null } {
const tzOffset = row?.tz_offset_seconds ?? 0;
const localDateStr = resolveChartLocalDate(row, hourly);
const localDayBounds = getLocalDayBounds(localDateStr);
const settlementObs = filterTimelinePointsToLocalDay(
normObs(hourly?.settlementTodayObs || row?.settlement_today_obs || row?.metar_context?.settlement_today_obs, tzOffset, MAX_OBS_POINTS, localDateStr),
localDayBounds,
);
const metarObs = filterTimelinePointsToLocalDay(
normObs(hourly?.metarTodayObs || row?.metar_today_obs || row?.metar_context?.today_obs || row?.metar_recent_obs || row?.metar_context?.recent_obs, tzOffset, MAX_OBS_POINTS, localDateStr),
localDayBounds,
);
const madisObs = filterTimelinePointsToLocalDay(
normObs(
airportPrimaryObservationPoints(hourly),
tzOffset,
MAX_OBS_POINTS,
localDateStr,
),
localDayBounds,
);
const runwayHistorySeries = filterRunwayHistoryToLocalDay(
buildRunwayHistorySeries(row, hourly, tzOffset, localDateStr, 1, isEn),
localDayBounds,
);
const settlementCityKey = normalizeCityKey(row?.city);
const isShenzhen = settlementCityKey === 'shenzhen';
const isHKO = (settlementCityKey === 'hongkong' || settlementCityKey === 'laufaushan'
|| (row?.city || '').toLowerCase().includes('hong kong')
|| (row?.city || '').toLowerCase().includes('lau fau shan')) && !isShenzhen;
let finalSettlementObs = settlementObs;
let finalMadisObs = madisObs;
if (isHKO) {
finalSettlementObs = madisObs;
finalMadisObs = settlementObs;
} else if (isShenzhen && !settlementObs.length && madisObs.length) {
finalSettlementObs = madisObs;
finalMadisObs = [];
}
// ── Runway band & max series ──
const normBandObs: TemperatureBandPoint[] = (hourly?.runwayBandHistory || []).map((pt) => {
try {
const ts = getCityLocalUtcTimestamp(pt.time, tzOffset, localDateStr);
if (ts === null) return null;
return {
ts,
high: pt.high_temp,
low: pt.low_temp,
avg: pt.avg_temp
};
} catch {
return null;
}
}).filter((v): v is NonNullable<typeof v> => v !== null && isWithinLocalDay(v.ts, localDayBounds));
const isHKOCity = settlementCityKey === 'hongkong' || settlementCityKey === 'laufaushan'
|| settlementCityKey === 'shenzhen' || (row?.city || '').toLowerCase().includes('hong kong')
|| (row?.city || '').toLowerCase().includes('lau fau shan');
const airportPrimarySourceText = [
(hourly?.airportPrimary as any)?.source,
hourly?.airportPrimary?.source_code,
hourly?.airportPrimary?.source_label,
].map((value) => String(value || "").toLowerCase()).join(" ");
const isAmscSource =
airportPrimarySourceText.includes("amsc") ||
(AMSC_RUNWAY_CITIES.has(settlementCityKey) && runwayHistorySeries.length > 0);
const isKoreanAmosSource =
(settlementCityKey === "seoul" || settlementCityKey === "busan") &&
(
String(
(hourly?.airportPrimary as any)?.source ||
hourly?.airportPrimary?.source_code ||
hourly?.airportPrimary?.source_label ||
hourly?.amos?.source ||
"",
).toLowerCase().includes("amos") ||
Boolean(hourly?.amos?.runway_obs)
);
const isRunwaySensorAggregateSource = isAmscSource || isKoreanAmosSource;
const isRedundantMetarFallback =
finalMadisObs.length > 0 &&
airportPrimaryUsesMetarFallback(hourly, isHKO, row) &&
airportPrimaryMatchesMetarStation(hourly, row);
const shouldRenderMetar =
metarObs.length > 0 &&
!isRedundantMetarFallback &&
!observationSetContains(finalMadisObs, metarObs);
const timelineSet = new Set<number>();
runwayHistorySeries.forEach((rhs) => rhs.points.forEach((point) => timelineSet.add(point.ts)));
normBandObs.forEach((point) => timelineSet.add(point.ts));
finalSettlementObs.forEach((point) => timelineSet.add(point.ts));
if (!isRunwaySensorAggregateSource) finalMadisObs.forEach((point) => timelineSet.add(point.ts));
if (shouldRenderMetar) metarObs.forEach((point) => timelineSet.add(point.ts));
addLocalDayAxisSlots(timelineSet, localDayBounds);
const correctedDebPath = hourly?.debHourlyPath;
const correctedDebTimes = Array.isArray(correctedDebPath?.times) ? correctedDebPath?.times || [] : [];
const correctedDebTemps = Array.isArray(correctedDebPath?.temps) ? correctedDebPath?.temps || [] : [];
let debTimes: string[] = [];
let debTemps: Array<number | null | undefined> = [];
if (correctedDebTimes.length && correctedDebTemps.length) {
debTimes = correctedDebTimes;
debTemps = correctedDebTemps;
} else if (hourly?.times?.length && hourly?.temps?.length) {
const debPath = buildDebBaselinePath(
hourly.times,
hourly.temps,
validNumber(hourly?.debPrediction) ?? row?.deb_prediction,
hourly.localTime || row?.local_time,
hourly.forecastTodayHigh,
);
debTimes = hourly.times;
debTemps = debPath.debTemps;
}
if (debTimes.length && debTemps.length) {
addHourlyTimesToTimeline(timelineSet, debTimes, debTemps, tzOffset, localDateStr, localDayBounds);
}
if (hourly?.modelCurves) {
Object.values(hourly.modelCurves).forEach((modelTemps) => {
addHourlyTimesToTimeline(
timelineSet,
resolveModelCurveTimes(hourly, modelTemps),
modelTemps,
tzOffset,
localDateStr,
localDayBounds,
);
});
}
const fallbackAnchor = resolveFullDayFallbackAnchor(row, hourly, tzOffset, localDateStr);
const timeline = ensureRenderableTimeline(sortedTimeline(timelineSet), fallbackAnchor);
const n = timeline.length;
const indexByTs = buildTimelineIndex(timeline);
const series: EvidenceSeries[] = [];
// ── Runway history series ──
runwayHistorySeries.forEach((rhs) => {
const values = valuesAtTimeline(n, indexByTs, rhs.points);
if (!values.some((v) => v !== null)) return;
series.push({
key: rhs.key,
label: rhs.label,
source: "",
color: rhs.color,
featured: rhs.isSettlement,
dashed: !rhs.isSettlement,
curve: "monotone",
showDot: rhs.isSettlement,
values,
});
});
const bandVals = bandValuesAtTimeline(n, indexByTs, normBandObs);
const maxVals = bandVals.map((val) => val ? val[1] : null);
if (maxVals.some((v) => v !== null)) {
series.push({
key: "runway_max",
label: isEn ? "Runway Max" : "跑道最高温",
source: "Runway Max",
color: "#009688",
featured: true,
values: maxVals,
});
}
// ── Settlement observations ──
if (finalSettlementObs.length) {
const svals = valuesAtTimeline(n, indexByTs, finalSettlementObs);
if (svals.some((v) => v !== null)) {
series.push({
key: "settlement",
label: isHKO ? "CoWIN 6087" : (isHKOCity ? "HKO" : (hourly?.settlementStationLabel || row?.metar_context?.station_label || row?.metar_context?.station || "Settlement")),
source: isHKO ? "cowin_obs" : (row?.metar_context?.station || row?.airport || "Settlement"),
color: "#009688",
featured: true,
values: svals,
});
}
}
// ── Airport Primary (MADIS / AMSC AWOS) ──
// Skip this series for AMSC AWOS cities — their data is redundant with
// runway sensor data and adds a confusing "AMSC AWOS" label to the chart.
if (finalMadisObs.length && !isRunwaySensorAggregateSource) {
const madisVals = valuesAtTimeline(n, indexByTs, finalMadisObs);
if (madisVals.some((v) => v !== null)) {
series.push({
key: "madis",
label: airportPrimarySeriesLabel(hourly, isHKO, row),
source: isHKO ? "HKO" : (airportCodeForSeriesLabel(hourly, row) || row?.airport || "MADIS"),
color: "#0284c7",
dashed: isHKO ? true : false,
values: madisVals,
});
}
}
if (shouldRenderMetar) {
const mvals = valuesAtTimeline(n, indexByTs, metarObs);
if (mvals.some((v) => v !== null)) {
series.push({
key: "metar",
label: isHKO ? "VHHH METAR" : (isHKOCity ? "HKO" : (row?.metar_context?.station_label || "METAR")),
source: row?.airport || "METAR",
color: "#0ea5e9",
dashed: true,
curve: "stepAfter",
showDot: true,
values: mvals,
});
}
}
// ── DEB forecast curve ──
if (debTimes.length && debTemps.length) {
const debVals = valuesForHourlyTimes(n, indexByTs, debTimes, debTemps, tzOffset, localDateStr, localDayBounds);
if (debVals.some((v) => v !== null)) {
series.push({
key: "hourly_forecast",
label: "DEB Forecast",
source: "DEB Hourly",
color: "#f97316",
featured: true,
smooth: true,
values: debVals,
});
}
// Per-model curves
if (hourly?.modelCurves) {
const modelColors = ["#2563eb", "#7c3aed", "#059669", "#d97706", "#dc2626", "#0891b2"];
Object.keys(hourly.modelCurves).forEach((model, idx) => {
const modelTemps = hourly.modelCurves![model];
if (!modelTemps?.length) return;
const vals = valuesForHourlyTimes(
n,
indexByTs,
resolveModelCurveTimes(hourly, modelTemps),
modelTemps,
tzOffset,
localDateStr,
localDayBounds,
);
if (vals.some((v) => v !== null)) {
if (!shouldRenderModelCurve(model, vals, timeline, row, hourly, tzOffset, localDateStr)) return;
series.push({
key: `model_curve_${model}`,
label: model,
source: "Multi-model hourly",
color: modelColors[idx % modelColors.length],
dashed: true,
smooth: true,
values: vals,
});
}
});
}
}
// ── Fallback ──
if (!hasRenderableLineSeries(series)) {
const fb =
validNumber(hourly?.airportCurrent?.temp) ??
validNumber(hourly?.airportPrimary?.temp) ??
latestObservationValue(finalMadisObs) ??
latestObservationValue(finalSettlementObs) ??
latestObservationValue(metarObs) ??
validNumber(row?.current_temp) ??
validNumber(hourly?.debPrediction) ??
validNumber(row?.deb_prediction) ??
validNumber(row?.target_threshold);
if (fb !== null) {
series.push({
key: "current",
label: "Current reference",
source: row?.metar_context?.source || "Live",
color: "#009688",
featured: true,
values: Array.from({ length: n }, () => fb),
});
}
}
// ── Build data rows ──
const data = timeline.map((ts, i) => {
const point: Record<string, any> = {
label: formatTimestamp(ts),
ts,
runway_band: bandVals[i] ?? null,
};
series.forEach((s) => { point[s.key] = s.values[i] ?? null; });
return point;
});
// Keep legacy Gaussian data as compact tooltip context. It is not rendered
// as a time-series line on the live temperature chart.
const probabilityOverlay = buildLegacyGaussianProbabilityOverlay(row, hourly);
return { data, series, probabilityOverlay };
}
// ── Model summary cards (daily high point predictions) ─────────────────
function buildModelSummaryCards(row: ScanOpportunityRow | null): EvidenceSeries[] {
return Object.entries(row?.model_cluster_sources || {})
.map(([label, value]) => [label, validNumber(value)] as const)
.filter((entry): entry is readonly [string, number] => entry[1] !== null)
.slice(0, 4)
.map(([label, value], index) => ({
key: `model_summary_${index}`,
label,
source: "Multi-model daily high",
color: ["#2563eb", "#14b8a6", "#7c3aed", "#64748b"][index] || "#64748b",
dashed: true,
values: [value],
}));
}
// ── Integer-degree ticks for Y-axis ──────────────────────────────────
function probabilityOverlayValues(probabilityOverlay?: ProbabilityOverlay | null) {
if (!probabilityOverlay) return [];
return [
...(probabilityOverlay.muLine ? [probabilityOverlay.muLine.value] : []),
...probabilityOverlay.bands.flatMap((band) => [band.lower, band.upper]),
];
}
function buildIntDegreeTicks(
series: EvidenceSeries[],
data?: Array<Record<string, string | number | null>>,
probabilityOverlay?: ProbabilityOverlay | null,
): number[] | null {
const vals = data?.length
? data.flatMap((point) => series.map((s) => point[s.key])).filter((v): v is number => validNumber(v) !== null)
: series.flatMap((s) => s.values).filter((v): v is number => validNumber(v) !== null);
const overlayVals = probabilityOverlayValues(probabilityOverlay);
const allVals = [...vals, ...overlayVals];
if (!allVals.length) return null;
const min = Math.floor(Math.min(...allVals));
const max = Math.ceil(Math.max(...allVals));
const ticks: number[] = [];
for (let d = min; d <= max; d++) ticks.push(d);
return ticks.length > 0 ? ticks : null;
}
function buildChartDomain(
series: EvidenceSeries[],
data?: Array<Record<string, string | number | null>>,
probabilityOverlay?: ProbabilityOverlay | null,
): [number, number] | ["auto", "auto"] {
const vals = data?.length
? data.flatMap((point) => series.map((s) => point[s.key])).filter((v): v is number => validNumber(v) !== null)
: series.flatMap((s) => s.values).filter((v): v is number => validNumber(v) !== null);
const overlayVals = probabilityOverlayValues(probabilityOverlay);
const allVals = [...vals, ...overlayVals];
if (!allVals.length) return ["auto", "auto"];
const min = Math.min(...allVals);
const max = Math.max(...allVals);
const span = Math.max(1, max - min);
const pad = Math.max(0.5, span * 0.08);
return [Number((min - pad).toFixed(1)), Number((max + pad).toFixed(1))];
}
function isLiveObservationSeries(series: EvidenceSeries) {
if (series.key === "hourly_forecast") return false;
if (series.key.startsWith("model_curve_")) return false;
if (series.key.startsWith("model_summary_")) return false;
if (["deb_prediction", "max_temp", "min_temp"].includes(series.key)) return false;
const source = String(series.source || "").toLowerCase();
if (source.includes("forecast") || source.includes("multi-model") || source === "deb") return false;
return true;
}
function latestLiveObservationTimestamp(
data: Array<Record<string, any>>,
series: EvidenceSeries[],
) {
let latest: number | null = null;
series.filter(isLiveObservationSeries).forEach((item) => {
item.values.forEach((value, index) => {
if (validNumber(value) === null) return;
const ts = typeof data[index]?.ts === "number" ? data[index].ts : null;
if (ts === null) return;
latest = latest === null ? ts : Math.max(latest, ts);
});
});
return latest;
}
function chartDeltaForCelsius(row: ScanOpportunityRow | null, deltaC: number) {
const symbol = String(row?.temp_symbol || "").toUpperCase();
return symbol.includes("F") ? deltaC * 1.8 : deltaC;
}
function getLiveObservationPoints(
data: Array<Record<string, any>>,
series: EvidenceSeries[],
) {
const liveSeries = series.filter(isLiveObservationSeries);
const points: Array<{ ts: number; temp: number }> = [];
data.forEach((row, index) => {
const ts = typeof row?.ts === "number" ? row.ts : null;
if (ts === null) return;
const values = liveSeries
.map((item) => validNumber(item.values[index]))
.filter((value): value is number => value !== null);
if (!values.length) return;
points.push({ ts, temp: Math.max(...values) });
});
return points.sort((left, right) => left.ts - right.ts);
}
function pointAtOrBefore(
points: Array<{ ts: number; temp: number }>,
targetTs: number,
): { ts: number; temp: number } | null {
let match: { ts: number; temp: number } | null = null;
for (const point of points) {
if (point.ts <= targetTs) match = point;
}
return match;
}
function getPeakGlowState(
row: ScanOpportunityRow | null,
data: Array<Record<string, any>>,
series: EvidenceSeries[],
): PeakGlowMeta {
const empty: PeakGlowMeta = {
state: "none",
currentTemp: null,
referenceHigh: null,
distanceToHigh: null,
trend30m: null,
trend60m: null,
observedHigh: null,
};
const livePoints = getLiveObservationPoints(data, series);
const latest = livePoints[livePoints.length - 1] || null;
if (!latest) return empty;
const previousLivePoints = livePoints.filter((point) => point.ts < latest.ts);
const previousHigh = previousLivePoints.length
? Math.max(...previousLivePoints.map((point) => point.temp))
: null;
const liveHigh = Math.max(...livePoints.map((point) => point.temp));
const rowHigh = validNumber(
row?.current_max_so_far ??
row?.metar_context?.airport_max_so_far ??
row?.metar_context?.max_temp,
);
const observedHigh = rowHigh !== null ? Math.max(liveHigh, rowHigh) : liveHigh;
const trend30Base = pointAtOrBefore(livePoints, latest.ts - 30 * 60 * 1000);
const trend60Base = pointAtOrBefore(livePoints, latest.ts - 60 * 60 * 1000);
const trend30m = trend30Base ? latest.temp - trend30Base.temp : null;
const trend60m = trend60Base ? latest.temp - trend60Base.temp : null;
const distanceToHigh = observedHigh - latest.temp;
const metaBase = {
currentTemp: latest.temp,
referenceHigh: observedHigh,
distanceToHigh,
trend30m,
trend60m,
observedHigh,
};
const hotWindowRange = getDebPeakWindowRange(data, series);
const hotWindowStart =
hotWindowRange ? validNumber(data[hotWindowRange[0]]?.ts) : null;
if (hotWindowStart !== null && latest.ts < hotWindowStart) {
return { state: "none", ...metaBase };
}
const nearThreshold = chartDeltaForCelsius(row, 0.5);
const watchThreshold = chartDeltaForCelsius(row, 1);
const flatTrendFloor = -chartDeltaForCelsius(row, 0.2);
const coolingDrop = -chartDeltaForCelsius(row, 0.5);
const breakoutStep = chartDeltaForCelsius(row, 0.1);
const isCooling =
distanceToHigh >= Math.abs(coolingDrop) &&
((trend60m !== null && trend60m <= coolingDrop) ||
(previousHigh !== null && latest.temp <= previousHigh + coolingDrop));
if (isCooling) return { state: "cooling", ...metaBase };
const isBreakout =
previousHigh !== null &&
latest.temp > previousHigh + breakoutStep;
if (isBreakout) return { state: "breakout", ...metaBase };
if (
distanceToHigh <= nearThreshold &&
(trend30m === null || trend30m >= flatTrendFloor)
) {
return { state: "near_peak", ...metaBase };
}
if (distanceToHigh <= watchThreshold) {
return { state: "watch", ...metaBase };
}
return { state: "none", ...metaBase };
}
function getDebPeakWindowRange(
data: Array<Record<string, any>>,
series: EvidenceSeries[],
): [number, number] | null {
const debSeries = series.find((item) => item.key === "hourly_forecast");
if (!debSeries || data.length < 2) return null;
const debPoints = debSeries.values
.map((value, index) => {
const ts = typeof data[index]?.ts === "number" ? data[index].ts : null;
const temp = validNumber(value);
return ts === null || temp === null ? null : { index, ts, temp };
})
.filter((point): point is { index: number; ts: number; temp: number } => point !== null);
if (debPoints.length < 2) return null;
const peak = debPoints.reduce((best, point) => (point.temp > best.temp ? point : best), debPoints[0]);
const peakPointIndex = debPoints.findIndex((point) => point.index === peak.index);
if (peakPointIndex < 0) return null;
const hotThreshold = peak.temp - 2;
let hotStartPoint = peakPointIndex;
let hotEndPoint = peakPointIndex;
while (hotStartPoint > 0 && debPoints[hotStartPoint - 1].temp >= hotThreshold) {
hotStartPoint -= 1;
}
while (hotEndPoint < debPoints.length - 1 && debPoints[hotEndPoint + 1].temp >= hotThreshold) {
hotEndPoint += 1;
}
const hour = 60 * 60 * 1000;
const targetSpan = 8 * hour;
const minSpan = 6 * hour;
const maxSpan = 12 * hour;
const firstTs = data.find((point) => typeof point.ts === "number")?.ts;
const lastTs = [...data].reverse().find((point) => typeof point.ts === "number")?.ts;
if (typeof firstTs !== "number" || typeof lastTs !== "number" || lastTs <= firstTs) return null;
let startTs = debPoints[hotStartPoint].ts - 1.5 * hour;
let endTs = debPoints[hotEndPoint].ts + 2 * hour;
const centerTs = peak.ts;
const latestObsTs = latestLiveObservationTimestamp(data, series);
if (endTs - startTs < targetSpan) {
startTs = centerTs - targetSpan / 2;
endTs = centerTs + targetSpan / 2;
}
if (endTs - startTs > maxSpan) {
startTs = centerTs - maxSpan / 2;
endTs = centerTs + maxSpan / 2;
}
if (latestObsTs !== null && latestObsTs > endTs && latestObsTs > debPoints[hotEndPoint].ts) {
endTs = Math.min(lastTs, latestObsTs);
if (endTs - startTs > maxSpan) {
startTs = Math.max(firstTs, endTs - maxSpan);
}
}
if (startTs < firstTs) {
endTs = Math.min(lastTs, endTs + firstTs - startTs);
startTs = firstTs;
}
if (endTs > lastTs) {
startTs = Math.max(firstTs, startTs - (endTs - lastTs));
endTs = lastTs;
}
if (endTs - startTs < minSpan && lastTs - firstTs >= minSpan) {
const missing = minSpan - (endTs - startTs);
startTs = Math.max(firstTs, startTs - missing / 2);
endTs = Math.min(lastTs, endTs + missing / 2);
}
const startIndex = data.findIndex((point) => typeof point.ts === "number" && point.ts >= startTs);
let endIndex = -1;
for (let index = data.length - 1; index >= 0; index -= 1) {
if (typeof data[index]?.ts === "number" && data[index].ts <= endTs) {
endIndex = index;
break;
}
}
return startIndex >= 0 && endIndex > startIndex ? [startIndex, endIndex] : null;
}
function binObservationsToSlots(
slots: number[],
obs: Array<{ ts: number; value: number }>,
): Array<number | null> {
const result: Array<number | null> = new Array(slots.length).fill(null);
for (const point of obs) {
for (let i = slots.length - 1; i >= 0; i--) {
if (point.ts >= slots[i]) {
result[i] = point.value;
break;
}
}
}
return result;
}
export {
MAX_HOURLY_DETAIL_CONCURRENT_REQUESTS,
HOURLY_DETAIL_REQUEST_TIMEOUT_MS,
HOURLY_CACHE_TTL_MS,
HOURLY_FORCE_REFRESH_DEDUP_MS,
_hourlyCache,
__readHourlyCacheEntryForTest,
resolveCityDetailFromBatch as __resolveCityDetailFromBatchForTest,
__resetHourlyDetailRequestQueueForTest,
__runQueuedHourlyDetailRequestForTest,
buildChartDomain,
buildFullDayChartData,
getDebPeakWindowRange,
getPeakGlowState,
buildIntDegreeTicks,
buildModelSummaryCards,
buildRunwayPlates,
fetchFullChartDetailForCity,
fetchLiveObservationForCity,
getActiveTemperatureSeries,
getTemperatureSeriesForRunwayDetailsMode,
getLiveObservationLabels,
getObservationDisplayMetrics,
getVisibleTemperatureSeries,
isTemperatureSeriesVisibleByDefault,
mergeHourlyWithLiveObservations,
mergeObservationSnapshotIntoHourly,
mergePatchIntoHourly,
mergeRowObservationIntoHourly,
normObs,
normalizeCityKey,
prefersHighFrequencyRunwayResolution,
readCachedHourlyForInitialRow,
readCityDetailBatchDiagnostics,
readHourlyDetailSnapshot,
readHourlyDetailSnapshotAgeMs,
readSessionCache,
rememberHourlyDetailSnapshot,
selectCompactSecondaryTemp,
selectDisplayRunwayTemp,
selectInitialHourlyForRowChange,
seedChartRenderStateFromRow,
seriesStats,
shouldPollLiveChart,
observationPayloadToSnapshot,
toFullChartDetail,
validNumber,
rememberCityDetailBatchDiagnostics as __rememberCityDetailBatchDiagnosticsForTest,
};
export type { EvidenceSeries, FullChartDetail, ChartRenderState, ObservationSnapshot, PeakGlowMeta, PeakGlowState, ProbabilityOverlay };