// pages/summary/summary — 3 成果卡
// 「狗狗走了」视角；补充字段全选填（R7）；Canvas 生成分享图；订阅提醒
const { call } = require('../../utils/cloud.js');
const store = require('../../utils/store.js');
const { formatDuration } = require('../../utils/format.js');
const { chooseAndUpload } = require('../../utils/media.js');
const { SUBSCRIBE_TEMPLATE_ID } = require('../../utils/config.js');

Page({
  data: {
    loaded: false,
    walkId: '',
    primaryDogId: '',
    dogName: '',
    dogAvatar: '',
    headline: '',
    bigValue: '',
    bigUnit: '',
    timeText: '',
    distanceText: '—',
    streak: 0,
    newAchievements: [],
    weathers: [{ k: 'sunny', l: '☀️ 晴' }, { k: 'cloudy', l: '☁️ 阴' }, { k: 'rainy', l: '🌧️ 雨' }],
    moods: [{ k: 'happy', l: '遛得开心' }, { k: 'tired', l: '有点累' }, { k: 'excited', l: '很兴奋' }],
    weather: '',
    mood: '',
    note: '',
    photos: [],
    submitting: false,
  },

  _attached: false,

  onLoad() {
    const sum = getApp().globalData.lastSummary;
    if (!sum) {
      wx.showToast({ title: '数据缺失', icon: 'none' });
      setTimeout(() => wx.switchTab({ url: '/pages/home/home' }), 1000);
      return;
    }
    const r = (sum.results && sum.results[0]) || {};
    const hasSteps = r.dogSteps != null;
    const dog = (store.getState().dogs || []).find((d) => d._id === r.dogId);
    this.setData({
      loaded: true,
      walkId: sum.walkId,
      primaryDogId: r.dogId || '',
      dogName: r.name || '狗狗',
      dogAvatar: (dog && dog.avatar) || '',
      headline: hasSteps ? `${r.name}今天走了` : `${r.name}今天遛了`,
      bigValue: hasSteps ? String(r.dogSteps) : formatDuration(r.duration || 0),
      bigUnit: hasSteps ? '狗步' : '',
      timeText: formatDuration(r.duration || 0),
      distanceText: r.distance != null ? Number(r.distance).toFixed(1) : '—',
      streak: r.streak || 0,
      newAchievements: sum.newAchievements || [],
    });
  },

  pickWeather(e) { const k = e.currentTarget.dataset.k; this.setData({ weather: this.data.weather === k ? '' : k }); },
  pickMood(e) { const k = e.currentTarget.dataset.k; this.setData({ mood: this.data.mood === k ? '' : k }); },
  onNote(e) { this.setData({ note: e.detail.value }); },

  async onPickPhoto() {
    const fileID = await chooseAndUpload('walk-photos');
    if (fileID) this.setData({ photos: [fileID] });
  },

  // 选填字段回写（只回写一次；含雨天战士成就判定）
  async ensureAttached() {
    if (this._attached) return;
    const { weather, mood, note, photos, walkId } = this.data;
    // 无任何选填内容时直接返回，但不锁定：用户可能稍后再补填，待真正回写后才置位
    if (!weather && !mood && !note && !photos.length) return;
    const res = await call('walkSave', {
      action: 'attach', walkId,
      weather: weather || null, mood: mood || null, note: note || null, photos,
    });
    this._attached = true;
    if (res && res.ok && res.data.newAchievements && res.data.newAchievements.length) {
      wx.showToast({ title: `解锁 ${res.data.newAchievements[0].name}`, icon: 'none' });
    }
  },

  // ===== Canvas 生成分享图 =====
  drawShareCard() {
    return new Promise((resolve) => {
      const q = wx.createSelectorQuery();
      q.select('#shareCanvas').fields({ node: true, size: true }).exec((res) => {
        if (!res[0] || !res[0].node) return resolve(null);
        const canvas = res[0].node;
        const ctx = canvas.getContext('2d');
        const dpr = (wx.getWindowInfo && wx.getWindowInfo().pixelRatio) || 2;
        const W = 600, H = 820;
        canvas.width = W * dpr;
        canvas.height = H * dpr;
        ctx.scale(dpr, dpr);

        // 背景
        ctx.fillStyle = '#FBF8F3';
        ctx.fillRect(0, 0, W, H);
        // 顶部色带
        ctx.fillStyle = '#E8A04B';
        ctx.fillRect(0, 0, W, 12);
        // 头像圆
        ctx.fillStyle = '#F7E5CC';
        ctx.beginPath();
        ctx.arc(W / 2, 150, 70, 0, Math.PI * 2);
        ctx.fill();

        ctx.textAlign = 'center';
        ctx.fillStyle = '#2E2A24';
        ctx.font = '600 34px sans-serif';
        ctx.fillText(this.data.headline, W / 2, 290);

        ctx.fillStyle = '#C77E2E';
        ctx.font = '700 96px sans-serif';
        ctx.fillText(this.data.bigValue, W / 2, 400);
        if (this.data.bigUnit) {
          ctx.fillStyle = '#6E665B';
          ctx.font = '500 28px sans-serif';
          ctx.fillText(this.data.bigUnit, W / 2, 445);
        }

        // 三宫格
        const cols = [
          { v: this.data.timeText, k: '时长' },
          { v: this.data.distanceText, k: '公里' },
          { v: `第${this.data.streak}天`, k: '连续' },
        ];
        const baseY = 560;
        cols.forEach((c, i) => {
          const x = (W / 4) * (i + 1);
          ctx.fillStyle = '#2E2A24';
          ctx.font = '600 36px sans-serif';
          ctx.fillText(c.v, x, baseY);
          ctx.fillStyle = '#A89F92';
          ctx.font = '400 24px sans-serif';
          ctx.fillText(c.k, x, baseY + 40);
        });

        // 页脚
        ctx.fillStyle = '#A89F92';
        ctx.font = '500 26px sans-serif';
        ctx.fillText('汪圈 · 每一次遛狗都值得被记录', W / 2, 760);

        wx.canvasToTempFilePath({
          canvas,
          success: (r) => resolve(r.tempFilePath),
          fail: () => resolve(null),
        });
      });
    });
  },

  async onShare() {
    if (this.data.submitting) return;
    this.setData({ submitting: true });
    await this.ensureAttached();
    const path = await this.drawShareCard();
    this.setData({ submitting: false });
    if (!path) return wx.showToast({ title: '生成失败', icon: 'none' });
    wx.showShareImageMenu({ path }); // 用户可分享到朋友圈/好友或保存
  },

  // 订阅「遛狗提醒」（模板未配置时静默跳过）
  requestSubscribe() {
    if (!SUBSCRIBE_TEMPLATE_ID) return Promise.resolve();
    return new Promise((resolve) => {
      wx.requestSubscribeMessage({ tmplIds: [SUBSCRIBE_TEMPLATE_ID], complete: resolve });
    });
  },

  async onDone() {
    if (this.data.submitting) return;
    this.setData({ submitting: true });
    await this.requestSubscribe();   // 需在用户点击手势内触发
    await this.ensureAttached();
    this.setData({ submitting: false });
    this.sediment();
  },

  // 转发好友 / 朋友圈（小程序卡片）
  onShareAppMessage() {
    return { title: `${this.data.dogName}今天的遛狗成果`, path: '/pages/login/login' };
  },
  onShareTimeline() {
    return { title: `${this.data.dogName}今天也出门遛了一圈` };
  },

  onClose() { wx.switchTab({ url: '/pages/home/home' }); },

  sediment() {
    const id = this.data.primaryDogId;
    if (id) wx.redirectTo({ url: `/pages/dog-detail/dog-detail?id=${id}` });
    else wx.switchTab({ url: '/pages/home/home' });
  },
});