import { request } from '../../utils/request'
import { ClothesItem } from '../../types/models'
import { ProcessStatus } from '../../utils/config'

const ATTRS = [
  { key: 'category_main', label: '大类', type: 'text' },
  { key: 'category_sub', label: '小类', type: 'text' },
  { key: 'style', label: '风格', type: 'text' },
  { key: 'color_main', label: '主色', type: 'color' },
  { key: 'color_sub', label: '副色', type: 'text' },
  { key: 'thickness', label: '厚度', type: 'text' },
  { key: 'version', label: '版型', type: 'text' },
  { key: 'material', label: '材质', type: 'text' },
  { key: 'pattern', label: '花纹', type: 'text' },
  { key: 'sleeve_type', label: '袖型', type: 'text' },
  { key: 'clothes_type', label: '衣长', type: 'text' },
  { key: 'neckline_type', label: '领型', type: 'text' },
  { key: 'formality', label: '正式程度', type: 'score' },
  { key: 'occasions', label: '适用场合', type: 'text' },
  { key: 'visual_impact', label: '视觉冲击力', type: 'score' },
]

// 将后端 image_process_status 映射为前端展示步骤：0=排队中 1=AI 抠图 2=智能分类
function statusToStep(status: number): number {
  if (status === ProcessStatus.QUEUED) return 0
  if (status === ProcessStatus.MATTING) return 1
  if (status === ProcessStatus.CLASSIFYING) return 2
  return 2
}

Page({
  data: {
    uuid: '',
    attrs: ATTRS,
    detail: {} as ClothesItem,
    formData: {} as ClothesItem,
    imageStatus: 0,
    step: 0,
    failReason: '',
    loading: true,
    editMode: false,
    notFound: false,
  },

  onLoad(query: Record<string, string>) {
    const uuid = query.uuid || ''
    this.setData({ uuid })
    if (!uuid) {
      // uuid 缺失时不请求不轮询，否则会停在空白页且无法退出
      this.setData({ loading: false, notFound: true })
      return
    }
    this.fetchDetail()
    this.pollStatus()
  },

  onBackWardrobe() {
    wx.switchTab({ url: '/pages/wardrobe/wardrobe' })
  },

  fetchDetail(): Promise<void> {
    return request<ClothesItem>({ url: `/clothes/${this.data.uuid}` })
      .then((detail) => this.setData({ detail, loading: false }))
      .catch(() => this.setData({ loading: false }))
  },

  pollStatus() {
    let count = 0
    ;(this as any).pollTimer = setInterval(() => {
      count++
      request<{ image_process_status: number; fail_reason?: string }>({
        url: `/clothes/${this.data.uuid}/status`,
        showError: false,
      })
        .then((res) => {
          const status = res.image_process_status
          if (status === ProcessStatus.SUCCESS) {
            // 成功：先拉最新详情，再切换为详情视图，避免空属性闪烁
            this.clearTimer()
            this.fetchDetail().then(() => this.setData({ imageStatus: status, step: 2 }))
          } else if (status === ProcessStatus.FAILED) {
            this.clearTimer()
            this.setData({ imageStatus: status, failReason: res.fail_reason || '识别失败' })
          } else {
            this.setData({ imageStatus: status, step: statusToStep(status) })
          }
        })
        .catch(() => {})
      if (count >= 120) {
        this.clearTimer()
      }
    }, 2000)
  },

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

  onUnload() {
    this.clearTimer()
  },

  onToggleEdit() {
    if (this.data.editMode) {
      this.setData({ editMode: false })
    } else {
      this.setData({ editMode: true, formData: { ...this.data.detail } })
    }
  },

  onNameInput(e: WechatMiniprogram.Input) {
    this.setData({ 'formData.name': e.detail.value })
  },

  onRemarkInput(e: WechatMiniprogram.Input) {
    this.setData({ 'formData.remark': e.detail.value })
  },

  onAttrTap(e: WechatMiniprogram.TouchEvent) {
    if (!this.data.editMode) return
    const key = e.currentTarget.dataset.key as string
    const attr = ATTRS.find((a) => a.key === key)
    if (!attr) return
    const current = (this.data.formData as any)[key] || ''

    if (attr.type === 'score') {
      wx.showActionSheet({
        itemList: ['1', '2', '3', '4', '5'],
        success: (res) => {
          this.setData({ [`formData.${key}`]: String(res.tapIndex + 1) })
        },
      })
      return
    }

    wx.showModal({
      title: `编辑${attr.label}`,
      editable: true,
      placeholderText: `请输入${attr.label}`,
      content: current,
      success: (res) => {
        if (res.confirm) {
          this.setData({ [`formData.${key}`]: res.content })
        }
      },
    })
  },

  onSave() {
    const fd = this.data.formData as any
    const body: Record<string, any> = {}
    const fields: Array<[string, string]> = [
      ['name', 'name'],
      ['remark', 'remark'],
      ['category_main', 'category_main'],
      ['category_sub', 'category_sub'],
      ['style', 'style'],
      ['color_main', 'color'], // 主色请求字段名是 color
      ['color_sub', 'color_sub'],
      ['thickness', 'thickness'],
      ['version', 'version'],
      ['material', 'material'],
      ['pattern', 'pattern'],
      ['sleeve_type', 'sleeve_type'],
      ['clothes_type', 'clothes_type'],
      ['neckline_type', 'neckline_type'],
      ['formality', 'formality'],
      ['occasions', 'occasions'],
      ['visual_impact', 'visual_impact'],
    ]
    fields.forEach(([src, dest]) => {
      if (fd[src]) body[dest] = fd[src]
    })

    request({ url: `/clothes/${this.data.uuid}`, method: 'PUT', data: body })
      .then(() => {
        wx.showToast({ title: '已保存', icon: 'success' })
        this.setData({ editMode: false })
        this.fetchDetail()
      })
      .catch(() => {})
  },

  onDelete() {
    const canRefund = this.data.imageStatus !== ProcessStatus.FAILED
    const content = canRefund ? '删除后将退回 1 次上传额度，确认删除？' : '确认删除？'
    wx.showModal({
      title: '删除这件衣物',
      content,
      confirmText: '确认删除',
      confirmColor: '#FF3B30',
      success: (res) => {
        if (!res.confirm) return
        request({ url: `/clothes/${this.data.uuid}`, method: 'DELETE' })
          .then(() => {
            wx.showToast({ title: '已删除', icon: 'success' })
            setTimeout(() => wx.navigateBack(), 500)
          })
          .catch(() => {})
      },
    })
  },
})