From c7114a4381905757a324996869695df516b0c05a Mon Sep 17 00:00:00 2001
From: sansenhoshi <sansenhoshi@outlook.com>
Date: Wed, 1 Jul 2026 11:51:51 +0800
Subject: [PATCH] =?UTF-8?q?=E6=A6=82=E8=BF=B0=E6=96=87=E6=9C=AC=E8=A1=A5?=
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---
 .../src/composables/useWeatherStats.ts        | 17 +++++++---
 weather-data-ui/src/views/home.vue            | 33 +++++++++----------
 2 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/weather-data-ui/src/composables/useWeatherStats.ts b/weather-data-ui/src/composables/useWeatherStats.ts
index 7bf8244..09af5f3 100644
--- a/weather-data-ui/src/composables/useWeatherStats.ts
+++ b/weather-data-ui/src/composables/useWeatherStats.ts
@@ -58,6 +58,10 @@ export interface SummaryMeta {
   month: number;
   day: number;
   count: number;
+  /** 实际数据中最早年份 */
+  dataFromYear?: number;
+  /** 实际数据中最晚年份 */
+  dataToYear?: number;
 }
 
 // ---------- 纯函数 ----------
@@ -201,14 +205,17 @@ export function buildStatCards(stats: WeatherStats): StatCard[] {
 }
 
 export function buildSummary(stats: WeatherStats, meta: SummaryMeta): string {
-  const { stationName, fromYear, toYear, month, day, count } = meta;
+  const { stationName, fromYear, toYear, month, day, count, dataFromYear, dataToYear } = meta;
   const d = String(day).padStart(2, "0");
+  const dataRange = dataFromYear != null && dataToYear != null
+    ? `（${dataFromYear}-${dataToYear}）`
+    : "";
   return [
-    `${stationName}在 ${fromYear}~${toYear} 年间，每年${month}月${d}日这一天共回溯 ${count} 条单日记录。`,
+    `${stationName}在 ${fromYear}~${toYear} 年间，每年${month}月${d}日这一天共回溯 ${count} 条单日记录${dataRange}。`,
     `其中 ${stats.rainyCount} 年当天出现降水，历史平均单日降雨量 ${stats.avgRain}mm，`,
     `单日最大降雨 ${stats.maxRain}mm（${stats.maxRainYear}年）。`,
-    `气候整体${+stats.avgRain > 15 ? "偏湿润" : "较干燥"}，`,
-    `需关注${stats.rainyCount / (count || 1) > 0.5 ? "短时强降水" : "高温干旱"}风险。`
+    `多年平均最高气温 ${stats.avgTmax}℃，多年平均最低气温 ${stats.avgTmin}℃，`,
+    `历史最高气温 ${stats.maxTmax}℃（${stats.maxTmaxYear}年），历史最低气温 ${stats.minTmin}℃（${stats.minTminYear}年）。`
   ].join("");
 }
 
@@ -237,7 +244,7 @@ export function useWeatherStats(displayRows: Ref<WeatherDataRow[]>) {
       }
     });
 
-    const items = RAIN_LEVELS.map((l, i) => ({
+    const items: { label: string; count: number; pct: string }[] = RAIN_LEVELS.map((l, i) => ({
       label: l.label,
       count: counts[i],
       pct: total > 0 ? ((counts[i] / total) * 100).toFixed(1) : "0.0"
diff --git a/weather-data-ui/src/views/home.vue b/weather-data-ui/src/views/home.vue
index 93d57b2..ee55930 100644
--- a/weather-data-ui/src/views/home.vue
+++ b/weather-data-ui/src/views/home.vue
@@ -58,7 +58,8 @@
           历年「<b class="hero-date-em">{{ anchorMonth }}月{{ padDay }}日</b>」情况
         </h2>
         <p class="hero-desc">
-          {{ currentAreaLabel }} 过去 <b>{{ computedSpan }}</b> 年间，每年此日的气象实况，共 <b>{{ pageState.weatherData.length }}</b> 条单日数据。
+          {{ currentAreaLabel }} 过去 <b>{{ computedSpan }}</b> 年间，每年此日的气象实况，共 <b>{{ pageState.weatherData.length }}</b> 条单日数据
+          <template v-if="pageState.dataFromYear != null">（{{ pageState.dataFromYear }}-{{ pageState.dataToYear }}）</template>。
           其中 <b>{{ pageState.stats.rainyCount }}</b> 年当天出现降水（占比 {{ pageState.stats.rainyPct }}%），最大单日降雨
           <b>{{ pageState.stats.maxRain }}</b> mm（{{ pageState.stats.maxRainYear }}年），历史单日最高温 <b class="hot">{{ pageState.stats.maxTmax }}℃</b>（{{ pageState.stats.maxTmaxYear }}年），
           历史单日最低温 <b class="cold">{{ pageState.stats.minTmin }}℃</b>（{{ pageState.stats.minTminYear }}年）。
@@ -396,7 +397,7 @@
                 </template>
               </el-table-column>
               <el-table-column label="平均风向" align="center" min-width="90">
-                <template #default="{ row }">{{ windDirectionLabel(row.windDirection) }}</template>
+                <template #default="{ row }">{{ windDirectionLabelLocal(row.windDirection) }}</template>
               </el-table-column>
               <el-table-column v-if="hasActiveFilter" label="匹配" align="center" min-width="65">
                 <template #default="{ row }"
@@ -499,6 +500,7 @@ import { useWeatherStats, computeStats, buildStatCards, buildSummary, emptyStats
 import { useWeatherChart } from "@/composables/useWeatherChart";
 import { useWeatherExport } from "@/composables/useWeatherExport";
 import type { WeatherDataRow } from "@/composables/useWeatherStats";
+import { windDirectionCode, windDirectionLabel } from "@/utils/windDirection";
 
 // =============================================================================
 //  Date / Constants
@@ -575,7 +577,9 @@ const pageState = reactive({
   stats: emptyStats(),
   summary: "",
   statCards: [] as ReturnType<typeof buildStatCards>,
-  disasters: [] as any[]
+  disasters: [] as any[],
+  dataFromYear: undefined as number | undefined,
+  dataToYear: undefined as number | undefined
 });
 
 // =============================================================================
@@ -583,19 +587,8 @@ const pageState = reactive({
 // =============================================================================
 const _store = useAppStore();
 
-function _windDirectionCode(deg: number | null | string) {
-  if (deg == null || deg === "" || isNaN(Number(deg))) return null;
-  const d = Number(deg);
-  if (d < 0 || d > 360) return null;
-  return ["N", "NE", "E", "SE", "S", "SW", "W", "NW"][Math.floor((d + 22.5) / 45) % 8];
-}
-
-function windDirectionLabel(deg: number | null | string) {
-  const code = _windDirectionCode(deg);
-  if (!code) return "—";
-  const type = _store.state.dicts.find((d: any) => d.dictType === "wind_direction_type");
-  const entry = type?.dataList?.find((e: any) => e.dictValue === code);
-  return entry?.dictLabel || code;
+function windDirectionLabelLocal(deg: number | null | string) {
+  return windDirectionLabel(deg, _store.state.dicts);
 }
 
 // =============================================================================
@@ -834,13 +827,19 @@ async function refreshAll() {
     pageState.weatherData = mapped;
     pageState.stats = stats;
     pageState.statCards = buildStatCards(stats);
+    const dataYears = mapped.map((r: WeatherDataRow) => r.year).filter((y: number) => !isNaN(y));
+    pageState.dataFromYear = dataYears.length ? Math.min(...dataYears) : undefined;
+    pageState.dataToYear = dataYears.length ? Math.max(...dataYears) : undefined;
+
     pageState.summary = buildSummary(stats, {
       stationName: sName,
       fromYear: from,
       toYear: to,
       month: m,
       day: d,
-      count: mapped.length
+      count: mapped.length,
+      dataFromYear: pageState.dataFromYear,
+      dataToYear: pageState.dataToYear
     });
     pageState.disasters = [];