94 lines
2.8 KiB
TypeScript
94 lines
2.8 KiB
TypeScript
export const WECHAT_OPEN_LOCATION_PAGE_PATH = '/pages/open-location/index'
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export interface WechatOpenLocationTarget {
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latitude: number
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longitude: number
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name: string
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address?: string
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}
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export interface WechatOpenLocationPageOptions {
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latitude?: unknown
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longitude?: unknown
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name?: unknown
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address?: unknown
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}
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export type WechatOpenLocationValidationResult =
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| { ok: true; value: WechatOpenLocationTarget }
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| { ok: false; message: string }
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const MAX_NAME_LENGTH = 100
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const MAX_ADDRESS_LENGTH = 300
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const firstValue = (value: unknown) => (
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Array.isArray(value) ? value[0] : value
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)
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const normalizeText = (value: unknown) => {
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const first = firstValue(value)
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return typeof first === 'string' ? first.trim() : ''
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}
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const normalizeCoordinate = (value: unknown) => {
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const first = firstValue(value)
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if (typeof first === 'string' && !first.trim()) return null
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if (typeof first !== 'string' && typeof first !== 'number') return null
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const coordinate = Number(first)
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return Number.isFinite(coordinate) ? coordinate : null
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}
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export const validateWechatOpenLocationTarget = (
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target: WechatOpenLocationPageOptions
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): WechatOpenLocationValidationResult => {
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const latitude = normalizeCoordinate(target.latitude)
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const longitude = normalizeCoordinate(target.longitude)
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const name = normalizeText(target.name)
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const address = normalizeText(target.address)
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if (latitude === null || longitude === null) {
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return { ok: false, message: '地图坐标缺失或格式错误' }
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}
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if (latitude < -90 || latitude > 90 || longitude < -180 || longitude > 180) {
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return { ok: false, message: '地图坐标超出有效范围' }
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}
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if (!name) {
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return { ok: false, message: '目的地名称不能为空' }
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}
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if (name.length > MAX_NAME_LENGTH || address.length > MAX_ADDRESS_LENGTH) {
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return { ok: false, message: '目的地名称或地址过长' }
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}
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return {
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ok: true,
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value: {
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latitude,
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longitude,
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name,
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address
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}
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}
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}
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export const buildWechatOpenLocationPageUrl = (
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target: WechatOpenLocationPageOptions
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) => {
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const result = validateWechatOpenLocationTarget(target)
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if (!result.ok) throw new TypeError(result.message)
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const params = new URLSearchParams()
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params.set('latitude', String(result.value.latitude))
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params.set('longitude', String(result.value.longitude))
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params.set('name', result.value.name)
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params.set('address', result.value.address || '')
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// 微信页面路由对加号的解码行为不统一，空格固定使用百分号编码。
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const query = params.toString().replace(/\+/g, '%20')
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return `${WECHAT_OPEN_LOCATION_PAGE_PATH}?${query}`
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}
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export const parseWechatOpenLocationPageOptions = (
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options: WechatOpenLocationPageOptions = {}
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) => validateWechatOpenLocationTarget(options)
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