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2026-07-02 17:23:13 +08:00
parent 4b2589156c
commit a0f4d8c18f
12 changed files with 320 additions and 98 deletions
@@ -0,0 +1,76 @@
+import { codeToText, regionData } from 'element-china-area-data';
+
+export { regionData as CHINA_REGION_OPTIONS };
+
+export type OpenCityRef = {
+  id: string;
+  name: string;
+  code: string;
+  partnerId?: string | null;
+  partner?: { id: string };
+};
+
+export type ParsedChinaRegion = {
+  province: string;
+  city: string;
+  district: string;
+  provinceCode: string;
+  cityCode: string;
+  districtCode: string;
+};
+
+/** 区县 adcode → 地级市 adcode（如 410105 → 410100） */
+export function districtCodeToCityCode(districtCode: string): string {
+  if (districtCode.length < 6) return districtCode;
+  return `${districtCode.slice(0, 4)}00`;
+}
+
+export function parseRegionCodes(codes?: string[]): ParsedChinaRegion | null {
+  if (!codes || codes.length < 3) return null;
+  const [provinceCode, cityCode, districtCode] = codes;
+  const province = codeToText[provinceCode];
+  const city = codeToText[cityCode];
+  const district = codeToText[districtCode];
+  if (!province || !city || !district) return null;
+  return { province, city, district, provinceCode, cityCode, districtCode };
+}
+
+export function formatRegionLabel(region: ParsedChinaRegion): string {
+  return `${region.province} / ${region.city} / ${region.district}`;
+}
+
+export function matchOpenCityId(
+  cities: OpenCityRef[],
+  districtCode: string,
+  partnerId?: string,
+): string | undefined {
+  const cityCode = districtCodeToCityCode(districtCode);
+  const scoped = partnerId
+    ? cities.filter((c) => {
+        const pid = c.partnerId ?? c.partner?.id;
+        return !pid || String(pid) === partnerId;
+      })
+    : cities;
+  return (
+    scoped.find((c) => c.code === cityCode)?.id
+    ?? scoped.find((c) => c.code === districtCode)?.id
+    ?? scoped.find((c) => districtCode.startsWith(c.code.slice(0, 4)))?.id
+  );
+}
+
+export function resolveRegionBinding(
+  codes: string[],
+  cities: OpenCityRef[],
+  partnerId?: string,
+) {
+  const region = parseRegionCodes(codes);
+  if (!region) return null;
+  const cityId = matchOpenCityId(cities, region.districtCode, partnerId);
+  const matchedCity = cityId ? cities.find((c) => c.id === cityId) : undefined;
+  return {
+    region,
+    cityId,
+    matchedCity,
+    cityCode: districtCodeToCityCode(region.districtCode),
+  };
+}