import { api } from '../../utils/api'
import { BREED_OPTIONS } from '../../utils/constants'
import { getPetEmoji } from '../../utils/format'

const SPECIES_LABELS: Record<string, string> = { dog: '狗狗', cat: '猫猫', other: '其他' }
const PET_TAGS = ['活泼', '温顺', '黏人', '独立', '爱玩', '怕生', '聪明', '贪吃', '爱运动', '安静']

const app = getApp<{ userInfo: any }>()

Page({
  data: {
    statusBarHeight: 0,
    isEdit: false,
    petId: '',
    form: {
      name: '',
      species: 'dog' as 'dog' | 'cat' | 'other',
      breed: '',
      gender: 'female' as 'female' | 'male',
      birthday: '',
      bio: '',
      tags: [] as string[],
      emoji: '🐶',
    },
    speciesLabel: '狗狗',
    allTags: PET_TAGS,
  },

  onLoad(query: { id?: string }) {
    const info = wx.getSystemInfoSync()
    this.setData({ statusBarHeight: info.statusBarHeight })

    if (query.id) {
      this.setData({ isEdit: true, petId: query.id })
      this.loadPet(query.id)
    }
  },

  loadPet(id: string) {
    const user = app.globalData?.userInfo
    const pet = user?.pets?.find((p: any) => p._id === id)
    if (!pet) return
    this.setData({
      form: {
        name: pet.name,
        species: pet.species,
        breed: pet.breed,
        gender: pet.gender,
        birthday: pet.birthday || '',
        bio: pet.bio || '',
        tags: pet.tags || [],
        emoji: pet.emoji,
      },
      speciesLabel: SPECIES_LABELS[pet.species] || '狗狗',
    })
  },

  onField(e: WechatMiniprogram.CustomEvent) {
    const key = e.currentTarget.dataset.key as string
    this.setData({ [`form.${key}`]: e.detail.value })
  },

  onSpecies() {
    wx.showActionSheet({
      itemList: ['狗狗', '猫猫', '其他'],
      success: res => {
        const species = (['dog', 'cat', 'other'] as const)[res.tapIndex]
        this.setData({
          'form.species': species,
          'form.breed': '',
          speciesLabel: SPECIES_LABELS[species],
          'form.emoji': getPetEmoji(species),
        })
      },
    })
  },

  onBreed() {
    const breeds = BREED_OPTIONS[this.data.form.species] || BREED_OPTIONS.dog
    wx.showActionSheet({
      itemList: breeds,
      success: res => {
        const breed = breeds[res.tapIndex]
        this.setData({
          'form.breed': breed,
          'form.emoji': getPetEmoji(this.data.form.species, breed),
        })
      },
    })
  },

  onGender(e: WechatMiniprogram.CustomEvent) {
    this.setData({ 'form.gender': e.currentTarget.dataset.v })
  },

  onBirthday(e: WechatMiniprogram.CustomEvent) {
    const dob = e.detail.value as string
    const diffMs = Date.now() - new Date(dob).getTime()
    const years = Math.floor(diffMs / (365.25 * 24 * 3600 * 1000))
    const months = Math.floor((diffMs % (365.25 * 24 * 3600 * 1000)) / (30.44 * 24 * 3600 * 1000))
    const age = years > 0 ? `${years}岁${months > 0 ? months + '个月' : ''}` : `${months}个月`
    this.setData({ 'form.birthday': dob, 'form.age': age })
  },

  onTagToggle(e: WechatMiniprogram.CustomEvent) {
    const tag = e.currentTarget.dataset.tag as string
    const tags = [...this.data.form.tags]
    const idx = tags.indexOf(tag)
    if (idx >= 0) tags.splice(idx, 1)
    else if (tags.length < 5) tags.push(tag)
    this.setData({ 'form.tags': tags })
  },

  async onChoosePhoto() {
    wx.chooseMedia({
      count: 1,
      mediaType: ['image'],
      sourceType: ['album', 'camera'],
      success: async res => {
        const path = res.tempFiles[0].tempFilePath
        wx.showLoading({ title: '上传中...' })
        try {
          const cloudPath = `pet-avatars/${Date.now()}.jpg`
          const r = await wx.cloud.uploadFile({ cloudPath, filePath: path })
          this.setData({ 'form.avatarUrl': r.fileID })
          wx.hideLoading()
        } catch {
          wx.hideLoading()
          wx.showToast({ title: '上传失败', icon: 'none' })
        }
      },
    })
  },

  async onSave() {
    const { form, isEdit, petId } = this.data
    if (!form.name.trim()) {
      wx.showToast({ title: '请填写宠物名字', icon: 'none' })
      return
    }
    wx.showLoading({ title: '保存中...' })
    try {
      await api.updatePet(isEdit ? { ...form, _id: petId } : form)
      wx.hideLoading()
      wx.showToast({ title: '保存成功', icon: 'success' })
      setTimeout(() => wx.navigateBack(), 800)
    } catch {
      wx.hideLoading()
      wx.showToast({ title: '保存失败', icon: 'none' })
    }
  },

  onDelete() {
    wx.showModal({
      title: '删除宠物档案',
      content: '确定要删除吗？',
      confirmText: '删除',
      confirmColor: '#ff4f91',
      success: res => {
        if (res.confirm) {
          wx.showToast({ title: '已删除', icon: 'success' })
          setTimeout(() => wx.navigateBack(), 800)
        }
      },
    })
  },

  onBack() { wx.navigateBack() },
})