import { loadBackendAuthTokens, loadBackendBaseUrl } from '../../utils/backendAuth'
import { getEventPlay, launchEvent, type BackendEventPlayResult } from '../../utils/backendApi'
import { adaptBackendLaunchResultToEnvelope } from '../../utils/backendLaunchAdapter'
import { prepareMapPageUrlForLaunch } from '../../utils/gameLaunch'

type EventPageData = {
  eventId: string
  loading: boolean
  titleText: string
  summaryText: string
  releaseText: string
  actionText: string
  statusText: string
}

function getAccessToken(): string | null {
  const app = getApp<IAppOption>()
  const tokens = app.globalData && app.globalData.backendAuthTokens
    ? app.globalData.backendAuthTokens
    : loadBackendAuthTokens()
  return tokens && tokens.accessToken ? tokens.accessToken : null
}

Page({
  data: {
    eventId: '',
    loading: false,
    titleText: '活动详情',
    summaryText: '未加载',
    releaseText: '--',
    actionText: '--',
    statusText: '待加载',
  } as EventPageData,

  onLoad(query: { eventId?: string }) {
    const eventId = query && query.eventId ? decodeURIComponent(query.eventId) : ''
    if (!eventId) {
      this.setData({
        statusText: '缺少 eventId',
      })
      return
    }
    this.setData({ eventId })
    this.loadEventPlay(eventId)
  },

  async loadEventPlay(eventId?: string) {
    const targetEventId = eventId || this.data.eventId
    const accessToken = getAccessToken()
    if (!accessToken) {
      wx.redirectTo({ url: '/pages/login/login' })
      return
    }

    this.setData({
      loading: true,
      statusText: '正在加载活动上下文',
    })

    try {
      const result = await getEventPlay({
        baseUrl: loadBackendBaseUrl(),
        eventId: targetEventId,
        accessToken,
      })
      this.applyEventPlay(result)
    } catch (error) {
      const message = error && (error as { message?: string }).message ? (error as { message: string }).message : '未知错误'
      this.setData({
        loading: false,
        statusText: `活动加载失败：${message}`,
      })
    }
  },

  applyEventPlay(result: BackendEventPlayResult) {
    this.setData({
      loading: false,
      titleText: result.event.displayName,
      summaryText: result.event.summary || '暂无活动简介',
      releaseText: result.resolvedRelease
        ? `${result.resolvedRelease.configLabel} / ${result.resolvedRelease.releaseId}`
        : '当前无可用 release',
      actionText: `${result.play.primaryAction} / ${result.play.reason}`,
      statusText: result.play.canLaunch ? '可启动' : '当前不可启动',
    })
  },

  handleRefresh() {
    this.loadEventPlay()
  },

  async handleLaunch() {
    const accessToken = getAccessToken()
    if (!accessToken) {
      wx.redirectTo({ url: '/pages/login/login' })
      return
    }

    this.setData({
      statusText: '正在创建 session 并进入地图',
    })

    try {
      const result = await launchEvent({
        baseUrl: loadBackendBaseUrl(),
        eventId: this.data.eventId,
        accessToken,
        clientType: 'wechat',
        deviceKey: 'mini-dev-device-001',
      })
      const envelope = adaptBackendLaunchResultToEnvelope(result)
      wx.navigateTo({
        url: prepareMapPageUrlForLaunch(envelope),
      })
    } catch (error) {
      const message = error && (error as { message?: string }).message ? (error as { message: string }).message : '未知错误'
      this.setData({
        statusText: `launch 失败：${message}`,
      })
    }
  },
})