import { pages } from 'virtual:uni-pages'

/**
 * 将 webview 的 vue-router 用法映射到 uni 路由（迁移页面使用）
 */
const pathToPage: Record<string, string> = {
  '/': '/pages/index',
  '/login': '/pages/login',
  '/historyQuery': '/pages/history-query',
  '/help': '/pages/help',
  '/help/detail': '/pages/help-detail',
  '/help/guide': '/pages/help-guide',
  '/withdraw': '/pages/withdraw',
  '/report': '/pages/report-result-webview',
  '/example': '/pages/report-example-webview',
  '/app/report': '/pages/report-result-webview',
  '/app/example': '/pages/report-example-webview',
  '/privacyPolicy': '/pages/privacy-policy',
  '/userAgreement': '/pages/user-agreement',
  '/authorization': '/pages/authorization',
  '/agentManageAgreement': '/pages/agent-manage-agreement',
  '/agentSerivceAgreement': '/pages/agent-service-agreement',
  '/agentServiceAgreement': '/pages/agent-service-agreement',
  '/payment/result': '/pages/payment-result',
  '/agent': '/pages/agent',
  '/agent/promote': '/pages/promote',
  '/me': '/pages/me',
  '/cancelAccount': '/pages/cancel-account',
}

const nameToPage: Record<string, string> = {
  index: '/pages/index',
  login: '/pages/login',
  invite: '/pages/invitation',
  invitation: '/pages/invitation',
  promote: '/pages/promote',
  agent: '/pages/agent',
  history: '/pages/history-query',
  help: '/pages/help',
  helpDetail: '/pages/help-detail',
  helpGuide: '/pages/help-guide',
  withdraw: '/pages/withdraw',
  report: '/pages/report-result-webview',
  example: '/pages/report-example-webview',
  paymentResult: '/pages/payment-result',
  privacyPolicy: '/pages/privacy-policy',
  userAgreement: '/pages/user-agreement',
  authorization: '/pages/authorization',
  agentManageAgreement: '/pages/agent-manage-agreement',
  agentSerivceAgreement: '/pages/agent-service-agreement',
  agentServiceAgreement: '/pages/agent-service-agreement',
  me: '/pages/me',
  cancelAccount: '/pages/cancel-account',
}

function withQuery(url: string, query?: Record<string, string>) {
  if (!query || !Object.keys(query).length)
    return url
  const q = Object.entries(query)
    .map(([k, v]) => `${encodeURIComponent(k)}=${encodeURIComponent(v)}`)
    .join('&')
  return `${url}${url.includes('?') ? '&' : '?'}${q}`
}

export function resolveWebToUni(to: string | { name?: string, path?: string, query?: Record<string, string> }): string {
  if (typeof to === 'string') {
    const qIdx = to.indexOf('?')
    const pathOnly = qIdx === -1 ? to : to.slice(0, qIdx)
    const queryPart = qIdx === -1 ? '' : to.slice(qIdx + 1)

    if (pathOnly.startsWith('/inquire/')) {
      const feature = pathOnly.replace(/^\/inquire\//, '')
      const base = `/pages/inquire?feature=${encodeURIComponent(feature)}`
      return queryPart ? `${base}&${queryPart}` : base
    }
    if (pathOnly.startsWith('/agent/invitationAgentApply/')) {
      const id = pathOnly.replace(/^\/agent\/invitationAgentApply\//, '')
      const base = `/pages/invitation-agent-apply?linkIdentifier=${encodeURIComponent(id)}`
      return queryPart ? `${base}&${queryPart}` : base
    }
    if (pathOnly.startsWith('/report/share/')) {
      const id = pathOnly.replace(/^\/report\/share\//, '')
      const base = `/pages/report-share?linkIdentifier=${encodeURIComponent(id)}`
      return queryPart ? `${base}&${queryPart}` : base
    }
    if (pathToPage[pathOnly]) {
      const mapped = pathToPage[pathOnly]
      return queryPart ? `${mapped}?${queryPart}` : mapped
    }
    if (to.startsWith('/pages/'))
      return to
    return `/pages/${pathOnly.replace(/^\//, '')}${queryPart ? `?${queryPart}` : ''}`
  }
  if (to.path) {
    const base = pathToPage[to.path] || to.path
    return withQuery(base, to.query)
  }
  if (to.name && nameToPage[to.name])
    return withQuery(nameToPage[to.name], to.query)
  return '/pages/index'
}

export function useRouter() {
  return {
    push(to: string | { name?: string, path?: string, query?: Record<string, string> }) {
      const url = resolveWebToUni(to as any)
      uni.navigateTo({ url })
    },
    replace(to: string | { name?: string, path?: string, query?: Record<string, string> }) {
      const url = resolveWebToUni(to as any)
      uni.redirectTo({ url })
    },
    go() {
      uni.navigateBack({})
    },
    back() {
      uni.navigateBack({})
    },
  }
}

/** 当前页 uni route，如 `pages/history-query`（无首尾多余斜杠） */
export function getCurrentUniRoute(): string {
  const pages = getCurrentPages()
  const page = pages[pages.length - 1] as any
  return (page?.route || 'pages/index').replace(/^\//, '')
}

type UniPageMeta = (typeof pages)[number] & {
  path?: string
  auth?: boolean
  style?: {
    navigationBarTitleText?: string
  }
}

function normalizeUniRoute(route?: string) {
  return (route || 'pages/index').replace(/^\//, '')
}

const pageMetaByRoute = new Map(
  (pages as UniPageMeta[]).map(page => [normalizeUniRoute(page.path), page]),
)

export function getCurrentPageMeta(): UniPageMeta | undefined {
  return pageMetaByRoute.get(getCurrentUniRoute())
}

export function getPageTitleByRoute(route = getCurrentUniRoute()): string {
  return pageMetaByRoute.get(normalizeUniRoute(route))?.style?.navigationBarTitleText || 'BDRP'
}

export function getLayoutPageTitle(): string {
  return getPageTitleByRoute()
}

/**
 * 与 webview vue-router path 对齐，用于全局通知 notificationPage 匹配。
 * 一个 uni 页面可对应多个 web 路径（如 webview 中 /withdraw 和 /agent/withdraw 是同一页面）。
 */
const UNI_TO_WEB_NOTIFY_PATHS: Record<string, string[]> = {
  'pages/index': ['/'],
  'pages/agent': ['/agent'],
  'pages/me': ['/me'],
  'pages/promote': ['/agent/promote'],
  'pages/history-query': ['/historyQuery'],
  'pages/help': ['/help'],
  'pages/help-detail': ['/help/detail'],
  'pages/help-guide': ['/help/guide'],
  'pages/withdraw': ['/withdraw', '/agent/withdraw'],
  'pages/report-result-webview': ['/app/report', '/report'],
  'pages/report-example-webview': ['/app/example', '/example'],
  'pages/privacy-policy': ['/privacyPolicy'],
  'pages/user-agreement': ['/userAgreement'],
  'pages/agent-manage-agreement': ['/agentManageAgreement'],
  'pages/agent-service-agreement': ['/agentSerivceAgreement'],
  'pages/authorization': ['/authorization'],
  'pages/payment-result': ['/payment/result'],
  'pages/inquire': ['/inquire'],
  'pages/login': ['/login'],
  'pages/invitation': ['/agent/invitation'],
  'pages/agent-promote-details': ['/agent/promoteDetails'],
  'pages/agent-rewards-details': ['/agent/rewardsDetails'],
  'pages/agent-vip': ['/agent/agentVip'],
  'pages/agent-vip-apply': ['/agent/vipApply'],
  'pages/agent-vip-config': ['/agent/vipConfig'],
  'pages/withdraw-details': ['/agent/withdrawDetails'],
  'pages/subordinate-list': ['/agent/subordinateList'],
  'pages/cancel-account': ['/cancelAccount'],
  'pages/subordinate-detail': ['/agent/subordinateDetail'],
  'pages/invitation-agent-apply': ['/agent/invitationAgentApply'],
  'pages/report-share': ['/report/share'],
}

/**
 * 获取当前 uni 页面在 web 端可能的所有路径（用于通知匹配）
 */
export function getWebPathsForNotification(): string[] {
  const r = getCurrentUniRoute()
  const pages = getCurrentPages()
  const page = pages[pages.length - 1] as any
  const q: Record<string, string> = { ...(page?.options || {}) }

  // 动态路由：带参数的路径
  if (r === 'pages/inquire' && q.feature)
    return [`/inquire/${q.feature}`]
  if (r === 'pages/subordinate-detail' && q.id)
    return [`/agent/subordinateDetail/${q.id}`]
  if (r === 'pages/invitation-agent-apply' && q.linkIdentifier)
    return [`/agent/invitationAgentApply/${q.linkIdentifier}`]
  if (r === 'pages/report-share' && q.linkIdentifier)
    return [`/report/share/${q.linkIdentifier}`]

  return UNI_TO_WEB_NOTIFY_PATHS[r] || ['/']
}

export function getWebPathForNotification(): string {
  return getWebPathsForNotification()[0] ?? '/'
}

const uniRouteToName: Record<string, string> = {
  'pages/index': 'index',
  'pages/agent': 'agent',
  'pages/me': 'me',
  'pages/promote': 'promote',
}

export function useRoute() {
  const pages = getCurrentPages()
  const page = pages[pages.length - 1] as any
  const query: Record<string, string> = { ...(page?.options || {}) }
  const params: Record<string, string> = { ...query }
  const routeKey = normalizeUniRoute(page?.route)
  return {
    query,
    path: page?.route ? `/${page.route}` : '/',
    params,
    name: uniRouteToName[routeKey] || routeKey,
    meta: {
      title: getPageTitleByRoute(routeKey),
    },
  }
}