import { request } from '../../utils/request'
import { AiRecommendResult, ClothesItem } from '../../types/models'
import { navScroll } from '../../utils/nav'
import { logger } from '../../utils/logger'

// 日志模块名
const LOG = 'ai-recommend'

Page({
  data: {
    state: 'scene' as 'scene' | 'generating' | 'result' | 'empty',
    showSceneSheet: true,
    sceneType: 1,
    scene: '',
    result: null as AiRecommendResult | null,
    clothes: [] as ClothesItem[],
    generating: false,
    // 滚动收缩：由 utils/nav.ts 的共享 handler 驱动
    navScrolled: false,
    // v2 玻璃弹层
    confirmVisible: false,
    confirmButtons: [
      { text: '取消', value: '' },
      { text: '开始生成', value: 'ok', type: 'main' },
    ],
    limitVisible: false,
    limitButtons: [
      { text: '取消', value: '' },
      { text: '去购买', value: 'ok', type: 'main' },
    ],
  },

  // scroll-view 滚动 → 导航收缩为玻璃小标题
  onNavScroll: navScroll,

  noop() {},

  selectDaily() {
    this.setData({ sceneType: 1 })
  },

  selectCustom() {
    this.setData({ sceneType: 2 })
  },

  onSceneInput(e: WechatMiniprogram.Input) {
    this.setData({ scene: e.detail.value })
  },

  onSkipScene() {
    this.setData({ showSceneSheet: false })
    this.startGenerate(1, '')
  },

  onStartGenerate() {
    this.setData({ showSceneSheet: false })
    this.startGenerate(this.data.sceneType, this.data.scene)
  },

  startGenerate(sceneType: number, scene: string) {
    if (this.data.generating) return
    // 待生成的场景参数暂存到实例，确认后再发起
    ;(this as any).pendingScene = { sceneType, scene }
    this.setData({ confirmVisible: true })
  },

  onConfirmCancel() {
    this.setData({ confirmVisible: false })
  },

  onConfirmGenerate(e: WechatMiniprogram.CustomEvent) {
    this.setData({ confirmVisible: false })
    if (e.detail.value !== 'ok') return
    const pending = (this as any).pendingScene || { sceneType: 1, scene: '' }
    this.doGenerate(pending.sceneType, pending.scene)
  },

  doGenerate(sceneType: number, scene: string) {
    if (this.data.generating) return
    this.setData({ state: 'generating', generating: true })

    const body: Record<string, any> = { scene_type: sceneType }
    if (sceneType === 2 && scene) body.scene = scene

    request<AiRecommendResult>({ url: '/ai-recommend', method: 'POST', data: body, showError: false })
      .then(async (res) => {
        logger.info(LOG, 'AI 推荐生成成功, 单品数=', res.outfit_item && res.outfit_item.length)
        const clothes = await Promise.all(
          res.outfit_item.map(async (it) => {
            try {
              return await request<ClothesItem>({ url: `/clothes/${it.clothes_uuid}`, showError: false })
            } catch (e: any) {
              logger.warn(LOG, '单品详情拉取失败, uuid=', it.clothes_uuid, 'code=', e && e.code)
              return { clothes_uuid: it.clothes_uuid } as ClothesItem
            }
          })
        )
        this.setData({ result: res, clothes, state: 'result', generating: false })
      })
      .catch((e: any) => {
        this.setData({ generating: false })
        const code = e && e.code
        logger.warn(LOG, 'AI 推荐生成失败, code=', code)
        if (code === 90400) {
          this.setData({ state: 'empty' })
        } else if (code === 90401 || code === 80000) {
          // 90401=AI 推荐次数上限；80000=额度不足兜底，统一弹窗引导购买
          this.setData({ state: 'scene', showSceneSheet: true })
          this.showLimitModal()
        } else if (code === 10003) {
          wx.showToast({ title: '正在生成中，请稍候', icon: 'none' })
          this.setData({ state: 'scene', showSceneSheet: true })
        } else {
          this.setData({ state: 'scene', showSceneSheet: true })
        }
      })
  },

  showLimitModal() {
    this.setData({ limitVisible: true })
  },

  onLimitCancel() {
    this.setData({ limitVisible: false })
  },

  onLimitConfirm(e: WechatMiniprogram.CustomEvent) {
    this.setData({ limitVisible: false })
    if (e.detail.value !== 'ok') return
    wx.navigateTo({
      url: '/pages/mall/mall',
      fail: (err) => logger.warn(LOG, 'navigateTo 商城失败, err=', err && err.errMsg),
    })
  },

  onSave() {
    if (!this.data.result) return
    request({
      url: '/ai-recommend/save',
      method: 'POST',
      data: { outfit_uuid: this.data.result.outfit_uuid },
    })
      .then(() => {
        logger.info(LOG, 'AI 穿搭保存成功')
        wx.showToast({ title: '已保存到我的穿搭', icon: 'success' })
        setTimeout(() => {
          wx.redirectTo({
            url: `/pages/outfit-detail/outfit-detail?uuid=${this.data.result!.outfit_uuid}&owner=1`,
            fail: (e) => logger.warn(LOG, 'redirectTo 穿搭详情失败, err=', e && e.errMsg),
          })
        }, 500)
      })
      .catch((e: any) => logger.warn(LOG, 'AI 穿搭保存失败, code=', e && e.code))
  },

  onReroll() {
    this.startGenerate(this.data.sceneType, this.data.scene)
  },

  onGoUpload() {
    wx.navigateTo({
      url: '/pages/upload/upload',
      fail: (e) => logger.warn(LOG, 'navigateTo 上传页失败, err=', e && e.errMsg),
    })
  },
})