// pages/dog-edit/dog-edit — 0b 建档/编辑（复用，docs/05 R2）
// 仅名字、犬种必填。未知犬种（中华田园犬/其他）需手动选体型档位。?id= 进编辑模式。
const { call } = require('../../utils/cloud.js');
const store = require('../../utils/store.js');
const { SIZE_LABELS, sizeOfBreed } = require('../../utils/dogStep.js');
const { chooseAndUpload } = require('../../utils/media.js');

const BREEDS = [
  '柯基', '比熊', '泰迪', '柴犬', '金毛', '拉布拉多',
  '哈士奇', '边境牧羊犬', '萨摩耶', '法斗', '中华田园犬', '其他',
];
const AGE_STAGES = [
  { key: 'puppy', label: '幼犬' },
  { key: 'adult', label: '成犬' },
  { key: 'senior', label: '老年犬' },
];

Page({
  data: {
    isEdit: false,
    dogId: '',
    breeds: BREEDS,
    ageStages: AGE_STAGES,
    sizeLabels: SIZE_LABELS,
    breedIndex: -1,
    needSize: false,   // 未知犬种时需手动选体型
    form: {
      name: '',
      breed: '',
      sizeLevel: '',
      gender: '',
      ageStage: '',
      weight: '',
      avatar: '',
    },
    submitting: false,
  },

  onLoad(options) {
    const id = options.id;
    if (id) {
      const dog = (store.getState().dogs || []).find((d) => d._id === id);
      if (dog) {
        wx.setNavigationBarTitle({ title: '编辑资料' });
        this.setData({
          isEdit: true,
          dogId: id,
          breedIndex: Math.max(0, BREEDS.indexOf(dog.breed)),
          needSize: !sizeOfBreed(dog.breed),
          form: {
            name: dog.name || '',
            breed: dog.breed || '',
            sizeLevel: dog.sizeLevel || '',
            gender: dog.gender || '',
            ageStage: dog.ageStage || '',
            weight: dog.weight != null ? String(dog.weight) : '',
            avatar: dog.avatar || '',
          },
        });
      }
    }
  },

  onNameInput(e) { this.setData({ 'form.name': e.detail.value }); },
  onWeightInput(e) { this.setData({ 'form.weight': e.detail.value }); },

  async onPickAvatar() {
    const fileID = await chooseAndUpload('avatars');
    if (fileID) this.setData({ 'form.avatar': fileID });
  },

  onBreedChange(e) {
    const idx = Number(e.detail.value);
    const breed = BREEDS[idx];
    const mapped = sizeOfBreed(breed);
    this.setData({
      breedIndex: idx,
      'form.breed': breed,
      needSize: !mapped,                          // 未知犬种 → 手动选
      'form.sizeLevel': mapped || '',
    });
  },

  onSizeTap(e) { this.setData({ 'form.sizeLevel': e.currentTarget.dataset.v }); },

  onGenderTap(e) {
    const v = e.currentTarget.dataset.v;
    this.setData({ 'form.gender': this.data.form.gender === v ? '' : v });
  },
  onAgeTap(e) {
    const v = e.currentTarget.dataset.v;
    this.setData({ 'form.ageStage': this.data.form.ageStage === v ? '' : v });
  },

  async onSubmit() {
    const { form, isEdit, dogId, needSize, submitting } = this.data;
    if (submitting) return;
    if (!form.name.trim()) return wx.showToast({ title: '请填写名字', icon: 'none' });
    if (!form.breed) return wx.showToast({ title: '请选择犬种', icon: 'none' });
    if (needSize && !form.sizeLevel) return wx.showToast({ title: '请选择体型档位', icon: 'none' });

    const ageText = (AGE_STAGES.find((a) => a.key === form.ageStage) || {}).label || '';
    const payload = {
      name: form.name.trim(),
      breed: form.breed,
      sizeLevel: form.sizeLevel || null,  // 已知犬种服务端会覆盖
      gender: form.gender || null,
      ageStage: form.ageStage || null,
      ageText,
      weight: form.weight ? Number(form.weight) : null,
      avatar: form.avatar || '',
    };

    this.setData({ submitting: true });
    const res = await call('dogManage', {
      action: isEdit ? 'update' : 'create',
      dog: isEdit ? { _id: dogId, ...payload } : payload,
    }, { loading: true, loadingText: '保存中' });
    this.setData({ submitting: false });
    if (!res.ok) return;

    const dogs = (store.getState().dogs || []).slice();
    const i = dogs.findIndex((d) => d._id === res.data._id);
    if (i >= 0) dogs[i] = res.data; else dogs.push(res.data);
    store.set({ dogs, currentDogId: res.data._id });

    if (isEdit) wx.navigateBack();
    else wx.switchTab({ url: '/pages/home/home' });
  },
});