@simoko/tw-zip
Version:
台灣縣市、行政區、郵遞區號（3碼/6碼）查詢工具，支援 React/Vue/Svelte/SolidJS/Angular
1 lines • 22 kB
Source Map (JSON)
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* 動態載入 zip6 資料\n */\n\nexport type AreaData = Record<string, string>\nexport type CityAreaData = Record<string, AreaData>\nexport type Zip3Map = Record<string, Record<string, string>>\n\nexport interface CitiesData {\n cities: string[]\n zip3: Zip3Map\n}\n\n// 預設使用 jsDelivr CDN\nconst DEFAULT_BASE_URL = 'https://cdn.jsdelivr.net/npm/@simoko/tw-zip/data/zip6'\n\n// 快取\nconst cityDataCache = new Map<string, CityAreaData>()\nlet citiesData: CitiesData | null = null\nlet citiesDataPromise: Promise<CitiesData> | null = null\n\nexport interface LoaderOptions {\n baseUrl?: string\n}\n\n/**\n * 載入縣市列表和 zip3 對照表\n */\nexport async function loadCitiesData(options: LoaderOptions = {}): Promise<CitiesData> {\n if (citiesData) {\n return citiesData\n }\n\n if (citiesDataPromise) {\n return citiesDataPromise\n }\n\n const baseUrl = options.baseUrl || DEFAULT_BASE_URL\n\n citiesDataPromise = fetch(`${baseUrl}/cities.json`)\n .then((res) => {\n if (!res.ok) {\n throw new Error(`Failed to load cities data: HTTP ${res.status}`)\n }\n return res.json()\n })\n .then((data: CitiesData) => {\n citiesData = data\n return data\n })\n .catch((error) => {\n // 清除 promise 以允許重試\n citiesDataPromise = null\n throw error\n })\n\n return citiesDataPromise\n}\n\n/**\n * 載入指定縣市的資料\n */\nexport async function loadCityData(city: string, options: LoaderOptions = {}): Promise<CityAreaData> {\n const trimmedCity = city.trim()\n if (!trimmedCity) {\n throw new Error('City name cannot be empty')\n }\n\n const cached = cityDataCache.get(trimmedCity)\n if (cached) {\n return cached\n }\n\n const baseUrl = options.baseUrl || DEFAULT_BASE_URL\n\n const response = await fetch(`${baseUrl}/${encodeURIComponent(trimmedCity)}.json`)\n if (!response.ok) {\n throw new Error(`Failed to load city data for ${trimmedCity}: HTTP ${response.status}`)\n }\n\n const data = await response.json() as CityAreaData\n\n cityDataCache.set(trimmedCity, data)\n return data\n}\n\n/**\n * 預載入指定縣市\n */\nexport async function preloadCities(cities: string[], options: LoaderOptions = {}): Promise<void> {\n await Promise.all(cities.map(city => loadCityData(city, options)))\n}\n\n/**\n * 取得已快取的縣市資料（同步）\n */\nexport function getCachedCityData(city: string): CityAreaData | undefined {\n return cityDataCache.get(city)\n}\n\n/**\n * 檢查縣市資料是否已快取\n */\nexport function isCityCached(city: string): boolean {\n return cityDataCache.has(city)\n}\n\n/**\n * 清除快取\n */\nexport function clearCache(): void {\n cityDataCache.clear()\n citiesData = null\n citiesDataPromise = null\n}\n","import type { CityAreaData, Zip3Map } from '../zip6/loader'\nimport { createMemo, createSignal } from 'solid-js'\nimport {\n clearCache,\n isCityCached,\n loadCitiesData,\n loadCityData,\n preloadCities,\n} from '../zip6/loader'\n\nexport interface SearchResult {\n city: string\n area: string\n road: string\n}\n\nexport interface Zip6Result {\n zipcode: string\n zip3: string\n city: string\n area: string\n road: string\n}\n\nexport interface UseTwZip6Options {\n baseUrl?: string\n preload?: string[]\n}\n\n// 規則解析快取\nconst parsedRulesCache = new Map<string, Array<[string, ...number[]]>>()\n\nfunction parseRules(rulesStr: string): Array<[string, ...number[]]> {\n if (!rulesStr) return []\n\n const cached = parsedRulesCache.get(rulesStr)\n if (cached) return cached\n\n const parsed = rulesStr.split('|').map((rule) => {\n const parts = rule.split(',')\n return [parts[0], ...parts.slice(1).map(Number)] as [string, ...number[]]\n })\n\n parsedRulesCache.set(rulesStr, parsed)\n return parsed\n}\n\nfunction calculateZipCode(\n city: string,\n area: string,\n road: string,\n number: number | undefined,\n lane: number | undefined,\n alley: number | undefined,\n cityData: CityAreaData | undefined,\n zip3Map: Zip3Map,\n): Zip6Result | undefined {\n if (!cityData) return undefined\n\n const areaData = cityData[area]\n if (!areaData) return undefined\n\n const rulesStr = areaData[road]\n if (!rulesStr) return undefined\n\n const zip3 = zip3Map[city]?.[area]\n if (!zip3) return undefined\n\n const rules = parseRules(rulesStr)\n\n for (const rule of rules) {\n const [suffix, even = 0, rLane = 0, rLane1 = 0, rAlley = 0, rAlley1 = 0, noBgn = 0, _noBgn1 = 0, noEnd = 0] = rule\n\n if (rLane > 0 || rLane1 > 0) {\n if (!lane) continue\n if (rLane > 0 && rLane1 > 0) {\n if (lane < rLane || lane > rLane1) continue\n }\n else if (rLane > 0) {\n if (noEnd === 9999 || noEnd === 9998) {\n if (lane < rLane) continue\n }\n else if (lane !== rLane) {\n continue\n }\n }\n }\n\n if (rAlley > 0 || rAlley1 > 0) {\n if (!alley) continue\n if (rAlley > 0 && rAlley1 > 0) {\n if (alley < rAlley || alley > rAlley1) continue\n }\n else if (rAlley > 0 && alley !== rAlley) {\n continue\n }\n }\n\n if (number !== undefined && (noBgn > 0 || noEnd > 0)) {\n if (even === 1 && number % 2 === 0) continue\n if (even === 2 && number % 2 === 1) continue\n\n const maxNo = noEnd === 9999 || noEnd === 9998 ? Number.POSITIVE_INFINITY : noEnd\n if (noBgn > 0 && number < noBgn) continue\n if (maxNo !== Number.POSITIVE_INFINITY && number > maxNo) continue\n }\n else if (even !== 0 && number !== undefined) {\n if (even === 1 && number % 2 === 0) continue\n if (even === 2 && number % 2 === 1) continue\n }\n\n return { zipcode: zip3 + suffix, zip3, city, area, road }\n }\n\n if (rules.length > 0) {\n const [suffix] = rules[0]\n return { zipcode: zip3 + suffix, zip3, city, area, road }\n }\n\n return undefined\n}\n\nexport function useTwZip6(options: UseTwZip6Options = {}) {\n const { baseUrl, preload } = options\n\n const [loading, setLoading] = createSignal(true)\n const [cities, setCities] = createSignal<string[]>([])\n const [zip3Map, setZip3Map] = createSignal<Zip3Map>({})\n\n const [city, setCityState] = createSignal('')\n const [area, setAreaState] = createSignal('')\n const [road, setRoadState] = createSignal('')\n const [number, setNumber] = createSignal<number | undefined>(undefined)\n const [lane, setLane] = createSignal<number | undefined>(undefined)\n const [alley, setAlley] = createSignal<number | undefined>(undefined)\n\n const [areas, setAreas] = createSignal<string[]>([])\n const [roads, setRoads] = createSignal<string[]>([])\n const [searchResults, setSearchResults] = createSignal<SearchResult[]>([])\n const [cityData, setCityData] = createSignal<CityAreaData | undefined>(undefined)\n\n // 用於追蹤最新請求\n let requestId = 0\n\n // 初始化\n async function init() {\n setLoading(true)\n const data = await loadCitiesData({ baseUrl })\n\n setCities(data.cities)\n setZip3Map(data.zip3)\n\n const firstCity = data.cities[0] ?? ''\n setCityState(firstCity)\n\n if (preload && preload.length > 0) {\n await preloadCities(preload, { baseUrl })\n }\n\n if (firstCity) {\n const firstCityData = await loadCityData(firstCity, { baseUrl })\n setCityData(firstCityData)\n const newAreas = Object.keys(firstCityData)\n setAreas(newAreas)\n setAreaState(newAreas[0] ?? '')\n\n if (newAreas[0]) {\n const areaDataObj = firstCityData[newAreas[0]]\n if (areaDataObj) {\n const newRoads = Object.keys(areaDataObj)\n setRoads(newRoads)\n setRoadState(newRoads[0] ?? '')\n }\n }\n }\n\n setLoading(false)\n }\n\n // 啟動初始化\n init()\n\n // 切換縣市\n async function setCity(value: string) {\n const currentRequestId = ++requestId\n setCityState(value)\n setLoading(true)\n\n try {\n const newCityData = await loadCityData(value, { baseUrl })\n\n if (requestId !== currentRequestId) return\n\n setCityData(newCityData)\n const newAreas = Object.keys(newCityData)\n setAreas(newAreas)\n setAreaState(newAreas[0] ?? '')\n setRoads([])\n setRoadState('')\n setNumber(undefined)\n setLane(undefined)\n setAlley(undefined)\n\n if (newAreas[0]) {\n const areaDataObj = newCityData[newAreas[0]]\n if (areaDataObj) {\n const newRoads = Object.keys(areaDataObj)\n setRoads(newRoads)\n setRoadState(newRoads[0] ?? '')\n }\n }\n }\n catch (error) {\n if (requestId === currentRequestId) {\n console.error(`Failed to load city data for ${value}:`, error)\n }\n }\n finally {\n if (requestId === currentRequestId) {\n setLoading(false)\n }\n }\n }\n\n // 切換行政區\n function setArea(value: string) {\n setAreaState(value)\n const currentCityData = cityData()\n if (currentCityData) {\n const areaDataObj = currentCityData[value]\n if (areaDataObj) {\n const newRoads = Object.keys(areaDataObj)\n setRoads(newRoads)\n setRoadState(newRoads[0] ?? '')\n }\n else {\n setRoads([])\n setRoadState('')\n }\n }\n setNumber(undefined)\n setLane(undefined)\n setAlley(undefined)\n }\n\n // 切換路名\n function setRoad(value: string) {\n setRoadState(value)\n setNumber(undefined)\n setLane(undefined)\n setAlley(undefined)\n }\n\n // 路名搜尋\n function searchRoads(keyword: string) {\n if (!keyword.trim()) {\n setSearchResults([])\n return\n }\n\n const results: SearchResult[] = []\n const trimmed = keyword.trim()\n const currentCity = city()\n const currentCityData = cityData()\n\n if (currentCityData) {\n for (const [a, areaDataObj] of Object.entries(currentCityData)) {\n for (const r of Object.keys(areaDataObj)) {\n if (r.includes(trimmed)) {\n results.push({ city: currentCity, area: a, road: r })\n }\n }\n }\n }\n\n setSearchResults(results)\n }\n\n // 計算郵遞區號\n const result = createMemo<Zip6Result | undefined>(() => {\n if (!city() || !area() || !road() || !cityData()) return undefined\n return calculateZipCode(city(), area(), road(), number(), lane(), alley(), cityData(), zip3Map())\n })\n\n const zipCode = createMemo(() => result()?.zipcode ?? '')\n const zip3 = createMemo(() => result()?.zip3 ?? '')\n\n return {\n loading,\n cities,\n areas,\n roads,\n\n city,\n area,\n road,\n number,\n lane,\n alley,\n\n setCity,\n setArea,\n setRoad,\n setNumber,\n setLane,\n setAlley,\n\n searchRoads,\n searchResults,\n\n zipCode,\n zip3,\n result,\n\n preloadCities: (citiesToPreload: string[]) => preloadCities(citiesToPreload, { baseUrl }),\n isCityCached,\n clearCache,\n }\n}\n\nexport { clearCache, isCityCached } from '../zip6/loader'\nexport default useTwZip6\n"]}