const { secure, toast } = require("../../utils/api");
const { localDate } = require("../../utils/date");
function dateLabel() {
  const now = new Date();
  return `${now.getMonth() + 1}月${now.getDate()}日 周${"日一二三四五六"[now.getDay()]}`;
}
Page({
  data: {
    locationName: "当前位置",
    headerSubtitle: dateLabel() + " · 轻触获取天气",
    pets: [],
    selected: [],
    tasks: [],
    walkCount: 0,
    name: "铲屎官",
    loading: true,
    ready: false,
    phase: "auth",
    error: "",
  },
  onShow() {
    this.updateEnvironmentLabel();
    this.load();
  },
  onUnload() {
    this.disposed = true;
  },
  updateEnvironmentLabel() {
    this.setData({
      headerSubtitle:
        dateLabel() + " · " + (this.weatherLabel || "轻触获取天气"),
    });
  },
  async refreshEnvironment(event) {
    if (this.environmentBusy) return;
    this.environmentBusy = true;
    const tapped = !!event;
    let positioned = false;
    try {
      const settings = await new Promise((resolve, reject) =>
        wx.getSetting({ success: resolve, fail: reject }),
      );
      if (settings.authSetting["scope.userLocation"] === false) {
        if (!tapped) throw new Error("location-denied");
        const enabled = await new Promise((resolve, reject) =>
          wx.openSetting({ success: resolve, fail: reject }),
        );
        if (!enabled.authSetting["scope.userLocation"])
          throw new Error("location-denied");
      }
      this.weatherLabel = "正在获取天气";
      this.updateEnvironmentLabel();
      const point = await new Promise((resolve, reject) =>
        wx.getLocation({
          type: "gcj02",
          success: resolve,
          fail: reject,
        }),
      );
      positioned = true;
      const result = await secure("/environment", "GET", {
        latitude: point.latitude,
        longitude: point.longitude,
      });
      this.setData({ locationName: result.location_name });
      this.weatherLabel = result.weather
        ? `${result.weather.description} ${result.weather.temperature}°C`
        : "天气暂不可用";
      this.environmentAt = result.weather ? Date.now() : 0;
    } catch (error) {
      const denied = /denied|deny|auth/.test(
        error.errMsg || error.message || "",
      );
      this.setData({
        locationName: positioned
          ? "位置暂不可用"
          : denied
            ? "开启定位"
            : "定位暂不可用",
      });
      this.weatherLabel = denied ? "轻触开启定位" : "轻触重试";
      if (tapped && !denied)
        wx.showToast({
          title: positioned ? "位置和天气获取失败，请重试" : "定位失败，请重试",
          icon: "none",
        });
    } finally {
      this.environmentBusy = false;
      this.updateEnvironmentLabel();
    }
  },
  async load() {
    if (this.loadPromise) return this.loadPromise;
    this.loadPromise = this.loadHome().finally(() => {
      this.loadPromise = null;
    });
    return this.loadPromise;
  },
  async loadHome() {
    this.setData({
      loading: true,
      error: "",
      phase: this.data.ready ? "data" : "auth",
    });
    let authenticated = false;
    try {
      await getApp().login();
      authenticated = true;
      if (this.disposed) return;
      this.setData({ phase: "data" });
      const [pets, tasks, walks, me] = await Promise.all([
        secure("/pets"),
        secure("/tasks"),
        secure("/walks"),
        secure("/me"),
      ]);
      if (this.disposed) return;
      const chosen = wx.getStorageSync("walk_pet_ids") || [],
        month = localDate().slice(0, 7);
      this.setData({
        pets,
        selected: chosen.filter((id) => pets.some((p) => p.id === id)),
        tasks: tasks.items,
        walkCount: walks.filter((w) => w.started_at.slice(0, 7) === month)
          .length,
        name: me.nickname || "毛孩家长",
        loading: false,
        ready: true,
        phase: "ready",
      });
      // Location permission and weather never hold up the first usable screen.
      if (
        !this.environmentAt ||
        Date.now() - this.environmentAt > 15 * 60 * 1000
      ) {
        this.refreshEnvironment();
      }
    } catch (error) {
      if (this.disposed) return;
      this.setData({
        loading: false,
        phase: !authenticated && !this.data.ready ? "auth-error" : "data-error",
        error: error.message || "暂时没能连接，请稍后重试",
      });
    }
  },
  addPet() {
    wx.navigateTo({ url: "/pages/pet-edit/pet-edit" });
  },
  pick(e) {
    this.setData({ selected: e.detail.selected });
    wx.setStorageSync("walk_pet_ids", e.detail.selected);
  },
  start() {
    if (!this.data.selected.length) {
      wx.showToast({ title: "先选择一起出门的狗狗", icon: "none" });
      return;
    }
    wx.redirectTo({ url: "/pages/walk/walk" });
  },
  goTasks() {
    wx.redirectTo({ url: "/pages/tasks/tasks" });
  },
  goWalks() {
    wx.navigateTo({ url: "/pages/walk-records/walk-records" });
  },
  async complete(e) {
    const id = e.currentTarget.dataset.id,
      task = this.data.tasks.find((t) => t.id === id);
    try {
      await secure("/tasks/" + id + "/completion", "PUT", {
        date: localDate(),
        completed: !task.completed,
      });
      await this.load();
    } catch (err) {
      toast(err);
    }
  },
});