const store = require('../../utils/store.js');
const api = require('../../utils/api.js');
const { toastErr } = require('../../utils/ui.js');

function todayStr() {
  const d = new Date();
  const p = (n) => (n < 10 ? '0' + n : '' + n);
  return d.getFullYear() + '-' + p(d.getMonth() + 1) + '-' + p(d.getDate());
}

function mapTask(t) {
  return {
    id: t.id,
    title: t.title,
    sub: t.description,
    priority: t.priority,
    done: t.done,
    sheet: t.sheet_type,
  };
}

// 快速记录入口。颜色按类别分组（体重/疫苗=橙、便便/饮食=绿、异常/用药=蓝、消费/照片=紫），
// 靠颜色和图标区分，不再靠 emoji。
const QUICK_ITEMS = [
  { type: 'weight', icon: 'weight', label: '体重', tone: 'tone-1' },
  { type: 'poop', icon: 'poop', label: '便便', tone: 'tone-2' },
  { type: 'food', icon: 'food', label: '饮食', tone: 'tone-2' },
  { type: 'symptom', icon: 'symptom', label: '异常', tone: 'tone-3' },
  { type: 'cost', icon: 'cost', label: '消费', tone: 'tone-4' },
  { type: 'medicine', icon: 'medicine', label: '用药', tone: 'tone-3' },
  { type: 'photo', icon: 'photo', label: '照片', tone: 'tone-4' },
  { type: 'vaccine', icon: 'vaccine', label: '疫苗', tone: 'tone-1' },
];

// 门面上的状态 chip：健康状态 + 最多两条洞察
function heroChips(summary) {
  const chips = [];
  if (summary.health_status) {
    chips.push({ text: summary.health_status, icon: 'check', tone: 'green' });
  }
  (summary.insights || []).slice(0, 2).forEach((it) => {
    if (it && it.bold) chips.push({ text: it.bold, icon: 'trend', tone: '' });
  });
  return chips;
}

Page({
  data: {
    pet: {},
    summary: { greeting: '', insights: [], week: [], advice: '', health_pct: 0, health_status: '正常' },
    tasks: [],
    quickItems: QUICK_ITEMS,
    heroChips: [],
    undoneText: '',
    firstArticle: null,
    selectedDate: '',
    taskLabel: '今日任务',
    todayDate: '',
    sheetShow: false,
    sheetType: '',
  },
  onLoad() {
    this.setData({ todayDate: todayStr() });
    this._unsub = store.subscribe((pet) => {
      this.setData({ pet });
      // 首次由 onShow 统一加载，这里只处理之后的「切换宠物 / 数据变更」，避免重复请求
      if (!this._inited) return;
      this.loadAll();
    });
  },
  onUnload() {
    if (this._unsub) this._unsub();
  },
  onShow() {
    if (typeof this.getTabBar === 'function' && this.getTabBar()) {
      this.getTabBar().setData({ selected: 0 });
    }
    store
      .ready()
      .then(() => {
        this._inited = true;
        this.setData({ pet: store.getPet() });
        this.loadAll();
      })
      .catch((e) => wx.showToast({ title: e.message || '加载失败', icon: 'none' }));
  },
  loadAll() {
    this.loadSummary();
    this.loadTasks();
    if (!this.data.firstArticle) {
      api
        .listArticles()
        .then((list) => {
          if (list && list[0]) {
            this.setData({ firstArticle: { id: list[0].id, icon: list[0].icon, title: list[0].title, desc: list[0].description } });
          }
        })
        .catch(() => {});
    }
  },
  loadSummary() {
    const id = store.currentPetId();
    if (!id) return;
    api
      .homeSummary(id)
      .then((summary) => this.setData({ summary, heroChips: heroChips(summary) }))
      .catch((e) => toastErr(e));
  },
  loadTasks() {
    const id = store.currentPetId();
    if (!id) return;
    const date = this.data.selectedDate || this.data.todayDate;
    api
      .getTasks(id, date)
      .then((tasks) => this.setTasks((tasks || []).map(mapTask)))
      .catch((e) => toastErr(e));
  },
  // 任务列表落地时顺手算「还有几件事没做完」，门面上要用
  setTasks(tasks) {
    const undone = tasks.filter((t) => !t.done).length;
    this.setData({
      tasks,
      undoneText: tasks.length === 0
        ? '这天还没有安排'
        : undone > 0 ? '还有 ' + undone + ' 件事没做完' : '今天的事都做完啦',
    });
  },
  onTapDay(e) {
    const { date, active } = e.currentTarget.dataset;
    if (!date) return;
    const parts = date.split('-');
    this.setData({
      selectedDate: date,
      taskLabel: active ? '今日任务' : +parts[1] + '月' + +parts[2] + '日',
    });
    this.loadTasks();
  },
  backToToday() {
    this.setData({ selectedDate: this.data.todayDate, taskLabel: '今日任务' });
    this.loadTasks();
  },
  onTapTask(e) {
    const i = e.currentTarget.dataset.index;
    const t = this.data.tasks[i];
    if (t.sheet) {
      this.openSheetType(t.sheet);
      return;
    }
    api
      .toggleTask(t.id)
      .then((res) => {
        const tasks = this.data.tasks.slice();
        tasks[i] = Object.assign({}, tasks[i], { done: res.done });
        this.setTasks(tasks);
        this.loadSummary();
      })
      .catch(() => {});
  },
  completeTasks() {
    const id = store.currentPetId();
    if (!id) return;
    api
      .completeAllTasks(id)
      .then((tasks) => {
        this.setTasks((tasks || []).map(mapTask));
        this.loadSummary();
      })
      .catch(() => {});
  },
  openSheet(e) {
    this.openSheetType(e.currentTarget.dataset.type);
  },
  openSheetType(type) {
    this.setData({ sheetType: type, sheetShow: true });
  },
  closeSheet() {
    // 只关闭。数据变更由 bind:saved 或 store 的宠物变更通知触发刷新，
    // 不必每次关弹层（哪怕只是看了眼 AI）都全量重拉一遍
    this.setData({ sheetShow: false });
  },
  onSheetSave() {
    this.loadTasks();
    this.loadSummary();
  },
  onAddPet() {
    this.openSheetType('addPet');
  },
  onEditPet() {
    this.openSheetType('editPet');
  },
  onFab() {
    wx.navigateTo({ url: '/pages/ai/ai' });
  },
  goProfile() {
    wx.navigateTo({ url: '/pages/profile/profile' });
  },
  goLearn() {
    wx.navigateTo({ url: '/pages/learn/learn' });
  },
  // 首页那张卡片直接打开这篇文章正文
  openFirstArticle() {
    const a = this.data.firstArticle;
    if (a && a.id) wx.navigateTo({ url: `/pages/article/article?id=${a.id}` });
    else this.goLearn();
  },
  goRecord() {
    wx.switchTab({ url: '/pages/record/record' });
  },
  onShareAppMessage() {
    return { title: '肉垫计划 · 每天照顾好毛孩子', path: '/pages/home/home' };
  },
  onShareTimeline() {
    return { title: '肉垫计划 · 每天照顾好毛孩子' };
  },
});