import { request, uploadFile, NOT_LOGIN_CODE } from '../../utils/request'
import { ProcessStatus } from '../../utils/config'

Page({
  data: {
    state: 'idle' as 'idle' | 'processing' | 'failed',
    imagePath: '',
    clothesUuid: '',
    failReason: '',
    step: 0,
  },

  onChoose() {
    wx.showActionSheet({
      itemList: ['拍照', '从相册选择'],
      success: (res) => {
        const sourceType: Array<'camera' | 'album'> = res.tapIndex === 0 ? ['camera'] : ['album']
        this.chooseImage(sourceType)
      },
      fail: () => {}, // 取消选择属正常操作，不必抛错日志
    })
  },

  chooseImage(sourceType: Array<'camera' | 'album'>) {
    wx.chooseMedia({
      count: 1,
      mediaType: ['image'],
      sourceType,
      success: (res) => {
        const file = res.tempFiles[0]
        this.startUpload(file.tempFilePath)
      },
    })
  },

  startUpload(filePath: string) {
    this.setData({ state: 'processing', imagePath: filePath, step: 0, failReason: '' })

    uploadFile<{ clothes_uuid: string; image_process_status: number }>(filePath)
      .then((res) => {
        this.setData({ clothesUuid: res.clothes_uuid })
        this.askNextAction()
      })
      .catch((e: any) => {
        this.setData({ state: 'idle' })
        if (e && e.code === 80000) {
          this.showQuotaModal()
          return
        }
        // uploadFile 已统一 toast 业务错误与网络错误；未登录时请求并未发出，需补一次提示
        if (e && e.code === NOT_LOGIN_CODE) {
          wx.showToast({ title: '请先登录', icon: 'none' })
        }
      })
  },

  askNextAction() {
    // 后台继续轮询，仅用于更新步骤进度（不再自动跳详情）
    this.pollStatus(this.data.clothesUuid)
    // 立即弹窗让用户选择下一步，避免干等
    wx.showModal({
      title: '衣物已上传',
      content: 'AI 正在识别中，可在衣橱查看进度',
      confirmText: '继续上传',
      cancelText: '回到衣橱',
      success: (res) => {
        this.clearTimer()
        if (res.confirm) {
          this.setData({ state: 'idle', imagePath: '', clothesUuid: '', step: 0, failReason: '' })
        } else {
          wx.navigateBack({
            delta: 1,
            fail: () => wx.switchTab({ url: '/pages/wardrobe/wardrobe' }),
          })
        }
      },
    })
  },

  pollStatus(uuid: string) {
    let count = 0
    ;(this as any).pollTimer = setInterval(() => {
      count++
      request<{ image_process_status: number; fail_reason: string }>({
        url: `/clothes/${uuid}/status`,
        showError: false,
      })
        .then((res) => {
          const status = res.image_process_status
          if (status === ProcessStatus.MATTING) {
            this.setData({ step: 1 })
          } else if (status === ProcessStatus.CLASSIFYING) {
            this.setData({ step: 2 })
          } else if (status === ProcessStatus.SUCCESS) {
            // 处理成功不再自动跳转，由用户自行从衣橱进入详情
            this.clearTimer()
          } else if (status === ProcessStatus.FAILED) {
            this.clearTimer()
            this.setData({ state: 'failed', failReason: res.fail_reason || '识别失败' })
          }
        })
        .catch(() => {})

      if (count >= 60) {
        this.clearTimer()
        this.setData({ state: 'failed', failReason: '处理超时，请重试' })
      }
    }, 1500)
  },

  clearTimer() {
    const t = (this as any).pollTimer
    if (t) {
      clearInterval(t)
      ;(this as any).pollTimer = null
    }
  },

  onUnload() {
    this.clearTimer()
  },

  showQuotaModal() {
    wx.showModal({
      title: '上传额度不足',
      content: '当前剩余 0 次，购买额度包后可继续上传',
      confirmText: '去购买',
      cancelText: '取消',
      success: (res) => {
        if (res.confirm) wx.navigateTo({ url: '/pages/mall/mall' })
      },
    })
  },

  onRetry() {
    this.setData({ state: 'idle', imagePath: '', clothesUuid: '', failReason: '' })
  },

  onManualEdit() {
    if (!this.data.clothesUuid) return
    wx.redirectTo({ url: `/pages/clothes-detail/clothes-detail?uuid=${this.data.clothesUuid}` })
  },
})