const { request, uploadImage, ensureLogin, cents } = require('../../utils/api.js')

Page({
  data: {
    loading: false,
    errorMessage: '',
    activeTab: 'hall',
    hallTasks: [],
    myTasks: [],
    stats: {
      byStatus: {},
      taskTotal: 0,
      completed: 0,
      rejected: 0,
      completionRate: 0,
      pendingSettlementText: cents(0),
      settledRewardText: cents(0),
    },
    selectedPhotosByTask: {},
  },

  onShow() {
    this.refreshAll()
  },

  async refreshAll() {
    this.setData({ loading: true, errorMessage: '' })
    try {
      await ensureLogin()
      const [hall, mine, stats] = await Promise.all([
        request('/cleaning/tasks/hall?page=1&pageSize=20'),
        request('/cleaning/tasks/mine?page=1&pageSize=20'),
        request('/cleaning/stats'),
      ])
      this.setData({
        hallTasks: (hall.data.items || []).map(formatTask),
        myTasks: (mine.data.items || []).map(formatTask),
        stats: formatStats(stats.data),
      })
    } catch (error) {
      this.setData({ errorMessage: error.message || '保洁任务加载失败' })
    } finally {
      this.setData({ loading: false })
    }
  },

  switchTab(event) {
    const tab = event.currentTarget.dataset.tab
    if (!tab || tab === this.data.activeTab) return
    this.setData({ activeTab: tab })
  },

  async claimTask(event) {
    await this.mutateTask(event.currentTarget.dataset.taskId, 'claim')
  },

  async startTask(event) {
    await this.mutateTask(event.currentTarget.dataset.taskId, 'start')
  },

  async choosePhotos(event) {
    const taskId = event.currentTarget.dataset.taskId
    if (!taskId) return
    try {
      const result = await wxChooseMedia(9)
      const current = this.data.selectedPhotosByTask[taskId] || []
      const next = current.concat(result.tempFiles.map((item) => item.tempFilePath)).slice(0, 9)
      this.setData({ [`selectedPhotosByTask.${taskId}`]: next })
    } catch (error) {
      this.setData({ errorMessage: error.message || '选择照片失败' })
    }
  },

  async submitTask(event) {
    const taskId = event.currentTarget.dataset.taskId
    const localPhotos = this.data.selectedPhotosByTask[taskId] || []
    if (localPhotos.length === 0) {
      this.setData({ errorMessage: '请先上传至少一张保洁照片' })
      return
    }
    this.setData({ loading: true, errorMessage: '' })
    let photoUrls = []
    try {
      await ensureLogin()
      const uploaded = await Promise.all(localPhotos.map((filePath) =>
        uploadImage(`/cleaning/tasks/${encodeURIComponent(taskId)}/photos`, filePath)
      ))
      photoUrls = uploaded.map((item) => item.data.publicUrl).filter(Boolean)
    } catch (error) {
      this.setData({ loading: false, errorMessage: error.message || '照片上传失败' })
      return
    }
    await this.mutateTask(event.currentTarget.dataset.taskId, 'submit', { photoUrls })
    this.setData({ [`selectedPhotosByTask.${taskId}`]: [] })
  },

  async reworkTask(event) {
    await this.mutateTask(event.currentTarget.dataset.taskId, 'rework')
  },

  async mutateTask(taskId, action, data = {}) {
    if (!taskId) return
    this.setData({ loading: true, errorMessage: '' })
    try {
      await ensureLogin()
      await request(`/cleaning/tasks/${encodeURIComponent(taskId)}/${action}`, {
        method: 'POST',
        data,
      })
      await this.refreshAll()
    } catch (error) {
      this.setData({ errorMessage: error.message || '保洁任务处理失败' })
    } finally {
      this.setData({ loading: false })
    }
  },
})

function formatTask(task) {
  return {
    ...task,
    rewardText: cents(task.rewardCents),
    timeText: formatDate(task.updatedAt || task.createdAt),
    canClaim: task.status === 'WAITING',
    canStart: task.status === 'CLAIMED',
    canSubmit: task.status === 'STARTED',
    canRework: task.status === 'REJECTED',
    canUpload: task.status === 'STARTED' || task.status === 'REJECTED',
  }
}

function formatStats(stats) {
  const taskTotal = Number(stats.taskTotal || 0)
  const completed = Number(stats.completed || 0)
  const rejected = Number(stats.rejected || 0)
  return {
    byStatus: stats.byStatus || {},
    taskTotal,
    completed,
    rejected,
    completionRate: Number(stats.completionRate || 0),
    pendingSettlementText: cents(stats.pendingSettlementCents),
    settledRewardText: cents(stats.settledRewardCents),
  }
}

function wxChooseMedia(count) {
  return new Promise((resolve, reject) => {
    wx.chooseMedia({
      count,
      mediaType: ['image'],
      sourceType: ['album', 'camera'],
      sizeType: ['compressed'],
      success: resolve,
      fail: reject,
    })
  })
}

function formatDate(value) {
  if (!value) return ''
  const date = new Date(value)
  const pad = (input) => String(input).padStart(2, '0')
  return `${pad(date.getMonth() + 1)}-${pad(date.getDate())} ${pad(date.getHours())}:${pad(date.getMinutes())}`
}