264 lines
8.2 KiB
TypeScript
264 lines
8.2 KiB
TypeScript
import type { ChartConfiguration } from "chart.js";
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import { useEffect, useMemo, useRef, useState } from "react";
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import { BarChart3 } from "lucide-react";
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import type { CityDetail } from "@/lib/dashboard-types";
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import { useChart } from "@/hooks/useChart";
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import { useI18n } from "@/hooks/useI18n";
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import { getTemperatureChartData } from "@/lib/chart-utils";
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type TemperatureChartData = NonNullable<ReturnType<typeof getTemperatureChartData>>;
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function compactSeries<T extends { time?: string | null; temp?: number | null }>(
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rows?: T[] | null,
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) {
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return (Array.isArray(rows) ? rows : [])
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.map((row) => `${String(row?.time || "").trim()}=${Number(row?.temp)}`)
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.join("|");
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}
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function buildTemperatureChartSignature(detail: CityDetail) {
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const hourly = detail.hourly || {};
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const mgmHourly = Array.isArray(detail.mgm?.hourly) ? detail.mgm?.hourly || [] : [];
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const tafMarkers = Array.isArray(detail.taf?.signal?.markers)
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? detail.taf?.signal?.markers || []
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: [];
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return [
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detail.name,
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detail.local_date,
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detail.temp_symbol,
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(hourly.times || []).join("|"),
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(hourly.temps || []).map((value) => Number(value)).join("|"),
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detail.forecast?.today_high ?? "",
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detail.deb?.prediction ?? "",
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detail.mgm?.temp ?? "",
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detail.mgm?.time ?? "",
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mgmHourly
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.map((row) => `${String(row?.time || "").trim()}=${Number(row?.temp)}`)
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.join("|"),
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compactSeries(detail.metar_today_obs),
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compactSeries(detail.settlement_today_obs),
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compactSeries(detail.trend?.recent),
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detail.current?.temp ?? "",
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detail.current?.obs_time ?? "",
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detail.airport_current?.temp ?? "",
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detail.airport_current?.obs_time ?? "",
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detail.peak?.first_h ?? "",
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detail.peak?.last_h ?? "",
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tafMarkers
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.map((marker) =>
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[
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marker?.marker_type,
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marker?.label_time,
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marker?.start_local,
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marker?.end_local,
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marker?.summary_zh,
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marker?.summary_en,
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]
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.map((value) => String(value || "").trim())
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.join("="),
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)
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.join("|"),
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].join("::");
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}
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export function AiCityTemperatureChart({ detail }: { detail: CityDetail }) {
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const { locale } = useI18n();
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const sectionRef = useRef<HTMLElement | null>(null);
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const [shouldRenderChart, setShouldRenderChart] = useState(false);
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const cityKey = `${detail.name || detail.display_name || ""}:${detail.local_date || ""}`;
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const chartSignature = useMemo(
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() => (shouldRenderChart ? buildTemperatureChartSignature(detail) : ""),
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[detail, shouldRenderChart],
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);
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const computedChartData = useMemo(
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() => (shouldRenderChart ? getTemperatureChartData(detail, locale) : null),
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[chartSignature, detail, locale, shouldRenderChart],
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);
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const lastChartDataRef = useRef<{
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cityKey: string;
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data: TemperatureChartData;
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} | null>(null);
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if (computedChartData) {
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lastChartDataRef.current = { cityKey, data: computedChartData };
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}
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const chartData =
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computedChartData ||
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(lastChartDataRef.current?.cityKey === cityKey
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? lastChartDataRef.current.data
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: null);
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const forecastLabel = locale === "en-US" ? "DEB baseline" : "DEB 原始路径";
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const calibratedLabel =
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locale === "en-US"
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? "METAR-calibrated path"
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: "METAR 修正路径";
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const observationLabel =
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chartData?.observationLabel ||
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(locale === "en-US" ? "METAR obs" : "METAR 实况");
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const hasCalibratedPath = Boolean(
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chartData?.datasets.calibratedFuture.some((value) => value != null),
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);
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const canvasRef = useChart(() => {
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if (!chartData) {
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return {
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data: { datasets: [], labels: [] },
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type: "line",
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} satisfies ChartConfiguration<"line">;
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}
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const datasets: NonNullable<
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ChartConfiguration<"line">["data"]
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>["datasets"] = [
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{
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borderColor: "rgba(100, 116, 139, 0.72)",
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borderDash: [6, 4],
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borderWidth: 1.6,
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data: chartData.datasets.debPast.map(
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(value, index) => value ?? chartData.datasets.debFuture[index],
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),
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fill: false,
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label: forecastLabel,
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pointRadius: 0,
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spanGaps: true,
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tension: 0.28,
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},
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];
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if (hasCalibratedPath) {
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datasets.push({
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borderColor: "#38bdf8",
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borderWidth: 2.3,
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data: chartData.datasets.calibratedFuture,
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fill: false,
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label: calibratedLabel,
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pointHoverRadius: 5,
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pointRadius: 0,
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spanGaps: true,
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tension: 0.32,
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});
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}
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datasets.push({
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backgroundColor: "#22C55E",
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borderColor: "#22C55E",
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borderWidth: 0,
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data: chartData.datasets.metarPoints,
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fill: false,
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label: observationLabel,
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pointHoverRadius: 5,
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pointRadius: 3.5,
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showLine: false,
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});
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return {
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data: {
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datasets,
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labels: chartData.times,
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},
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options: {
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animation: false,
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interaction: { intersect: false, mode: "index" },
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layout: { padding: { bottom: 2, left: 0, right: 8, top: 8 } },
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maintainAspectRatio: false,
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plugins: {
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legend: { display: false },
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tooltip: {
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backgroundColor: "rgba(11, 18, 32, 0.96)",
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borderColor: "rgba(77, 163, 255, 0.38)",
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borderWidth: 1,
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},
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},
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responsive: true,
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scales: {
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x: {
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grid: { color: "rgba(159, 178, 199, 0.08)" },
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ticks: {
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callback: (_value, index) =>
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typeof index === "number" && index % 4 === 0
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? chartData.times[index]
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: "",
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color: "#6B7A90",
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font: { size: 10 },
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maxTicksLimit: 6,
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maxRotation: 0,
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},
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},
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y: {
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grid: { color: "rgba(159, 178, 199, 0.08)" },
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max: chartData.max,
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min: chartData.min,
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ticks: {
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callback: (value) =>
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`${Number(value).toFixed(chartData.yTickStep < 1 ? 1 : 0)}${detail.temp_symbol || "°C"}`,
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color: "#6B7A90",
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font: { size: 10 },
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maxTicksLimit: 5,
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stepSize: chartData.yTickStep,
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},
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},
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},
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transitions: {
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active: { animation: { duration: 0 } },
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hide: { animation: { duration: 0 } },
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resize: { animation: { duration: 0 } },
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show: { animation: { duration: 0 } },
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},
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},
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type: "line",
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} satisfies ChartConfiguration<"line">;
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}, [
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calibratedLabel,
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chartData,
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detail.temp_symbol,
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forecastLabel,
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hasCalibratedPath,
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observationLabel,
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]);
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useEffect(() => {
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if (shouldRenderChart) return;
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if (typeof window === "undefined" || !("IntersectionObserver" in window)) {
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setShouldRenderChart(true);
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return;
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}
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const target = sectionRef.current;
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if (!target) return;
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const observer = new IntersectionObserver(
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(entries) => {
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if (!entries.some((entry) => entry.isIntersecting)) return;
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setShouldRenderChart(true);
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observer.disconnect();
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},
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{ rootMargin: "220px 0px" },
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);
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observer.observe(target);
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return () => observer.disconnect();
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}, [shouldRenderChart]);
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return (
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<section className="scan-ai-city-section chart" ref={sectionRef}>
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<div className="scan-ai-city-section-title">
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<BarChart3 size={15} />
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<span>{locale === "en-US" ? "Evidence · intraday path" : "证据 · 今日日内路径"}</span>
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</div>
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<div className="scan-ai-city-chart">
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{shouldRenderChart ? (
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<canvas ref={canvasRef} />
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) : (
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<div className="scan-ai-city-chart-placeholder">
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{locale === "en-US" ? "Chart will render when visible" : "图表进入视口后再渲染"}
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</div>
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)}
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</div>
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{chartData ? (
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<div className="scan-ai-city-chart-legend">
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<span><i className="forecast" />{forecastLabel}</span>
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{hasCalibratedPath ? (
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<span><i className="calibrated" />{calibratedLabel}</span>
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) : null}
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<span><i className="observation" />{observationLabel}</span>
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</div>
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) : null}
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</section>
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);
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}
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