const api = require('../../utils/api');
const storage = require('../../utils/storage');

Page({
  data: { loading: true, recipe: null, missingIngredients: [] },

  onLoad(options) {
    if (options.id) {
      api.get('/api/recipe/' + options.id).then(data => {
        this.setData({ loading: false, recipe: data });
      }).catch(() => {
        this.setData({ loading: false });
        wx.showToast({ title: '加载失败', icon: 'none' });
      });
    }

    if (options.missing) {
      try {
        this.setData({ missingIngredients: JSON.parse(decodeURIComponent(options.missing)) });
      } catch (e) {
        // ignore
      }
    }

    // 启用分享
    wx.showShareMenu({
      withShareTicket: false,
      menus: ['shareAppMessage', 'shareTimeline']
    });
  },

  onShareAppMessage() {
    const recipe = this.data.recipe;
    if (!recipe) return {};
    return {
      title: '我用冰箱剩菜做出了「' + recipe.name + '」！你也来试试？',
      path: '/pages/recipe-detail/recipe-detail?id=' + recipe.id,
      imageUrl: recipe.imageUrl || ''
    };
  },

  onShareTimeline() {
    const recipe = this.data.recipe;
    if (!recipe) return {};
    return {
      title: recipe.name + ' · 冰箱盲盒开出的好菜',
      query: 'id=' + recipe.id,
      imageUrl: recipe.imageUrl || ''
    };
  },

  startTimer() {
    wx.showToast({ title: '计时器功能开发中', icon: 'none' });
  },

  addToShopping() {
    const recipe = this.data.recipe;
    if (!recipe || !recipe.ingredients) return;

    const raw = storage.get('shopping_list', []);
    const existing = Array.isArray(raw) ? raw : [];
    const names = new Set(existing.map(i => i.name));

    // 只添加"缺少的食材"；若无缺失信息则提示而非加全部
    const missing = this.data.missingIngredients;
    if (!Array.isArray(missing) || missing.length === 0) {
      wx.showToast({ title: '该菜谱食材已齐全', icon: 'none' });
      return;
    }

    const targetNames = new Set(missing);
    let added = 0;

    recipe.ingredients.forEach(ing => {
      if (!targetNames.has(ing.ingredientName)) return;
      if (names.has(ing.ingredientName)) return;

      existing.push({
        name: ing.ingredientName,
        amount: ing.amount || '',
        from: recipe.name,
        checked: false
      });
      names.add(ing.ingredientName);
      added++;
    });

    storage.set('shopping_list', existing);

    if (added === 0) {
      wx.showToast({ title: '缺少食材已在清单中', icon: 'none' });
    } else {
      wx.showToast({ title: '已添加 ' + added + ' 项缺少食材', icon: 'success' });
    }
  }
});