2569718930@qq.com
85 lines
2.4 KiB
TypeScript
85 lines
2.4 KiB
TypeScript
import type { CityDetail } from "@/lib/dashboard-types";
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export type MonitorTemperatureSource =
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| "amsc_awos_runway_max"
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| "amsc_awos_runway"
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| "amos_runway_median"
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| "amos_runway"
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| "amos"
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| "airport_primary"
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| "airport_current"
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| "current"
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| "missing";
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export type MonitorTemperature = {
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source: MonitorTemperatureSource;
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value: number | null;
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};
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function finiteNumber(value: unknown): number | null {
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const num = Number(value);
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return Number.isFinite(num) ? num : null;
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}
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function median(values: number[]) {
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if (!values.length) return null;
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const sorted = [...values].sort((a, b) => a - b);
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const mid = Math.floor(sorted.length / 2);
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return sorted.length % 2 === 1
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? sorted[mid]
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: (sorted[mid - 1] + sorted[mid]) / 2;
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}
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export function getAmosRunwayTemperature(detail?: CityDetail | null) {
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const runwayTemps =
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detail?.amos?.runway_obs?.temperatures ||
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detail?.amos?.runway_temps ||
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[];
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const values = runwayTemps
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.map((pair) => finiteNumber(pair?.[0]))
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.filter((value): value is number => value != null);
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if (detail?.amos?.source === "amsc_awos") {
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if (!values.length) return null;
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return {
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source: values.length > 1 ? "amsc_awos_runway_max" : "amsc_awos_runway",
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value: Math.max(...values),
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} satisfies MonitorTemperature;
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}
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const value = median(values);
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if (value == null) return null;
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return {
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source: values.length > 1 ? "amos_runway_median" : "amos_runway",
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value,
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} satisfies MonitorTemperature;
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}
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export function resolveMonitorTemperature(
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detail?: CityDetail | null,
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options?: { ignoreRunway?: boolean },
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): MonitorTemperature {
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if (!options?.ignoreRunway) {
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const runway = getAmosRunwayTemperature(detail);
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if (runway) return runway;
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}
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const amosTemp = finiteNumber(detail?.amos?.temp ?? detail?.amos?.temp_c);
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if (
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!options?.ignoreRunway &&
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amosTemp != null &&
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detail?.amos?.temp_source === "runway_median"
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) {
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return { source: "amos", value: amosTemp };
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}
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const airportPrimary = finiteNumber(detail?.airport_primary?.temp);
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if (airportPrimary != null) return { source: "airport_primary", value: airportPrimary };
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const airport = finiteNumber(detail?.airport_current?.temp);
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if (airport != null) return { source: "airport_current", value: airport };
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const current = finiteNumber(detail?.current?.temp);
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if (current != null) return { source: "current", value: current };
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return { source: "missing", value: null };
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}
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