const app = getApp();
Page({
    /**
     * 页面的初始数据
     */
    data: {
        frameStyle: { useTop: true, name: '临时上课学员', leftArrow: true, useBar: false },
        iconUrl: app.globalData.icon,
        lesson_id: '',
        // 查询
        search: {},
        list: [],
        total: 0,
        skip: 0,
        limit: 10,
        page: 0,
    },

    // 跳转菜单
    back(e) {
        wx.navigateBack({ delta: 1 })
    },
    // 查询
    toInput(e) {
        const that = this;
        let value = e.detail.value;
        if (value) that.setData({ 'search.name': value })
        else that.setData({ search: {} })
        that.clearPage();
        that.search();
    },
    // 清空列表
    clearPage() {
        const that = this;
        that.setData({ list: [], skip: 0, limit: 10, page: 0 })
    },
    // 添加
    toAdd() {
        const that = this;
        let lesson_id = that.data.lesson_id;
        that.clearPage();
        wx.navigateTo({
            url: `/pagesSchool/coaAdmin/course/tpStudentadd?lesson_id=${lesson_id}`,
        })
    },
    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
        const that = this;
        that.setData({ lesson_id: options.lesson_id || '' });
    },
    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {

    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow: async function () {
        const that = this;
        // 监听用户是否登录
        await that.watchLogin();
    },
    watchLogin: async function () {
        const that = this;
        wx.getStorage({
            key: 'user',
            success: async res => {
                await that.search();
            },
            fail: async res => {
                wx.redirectTo({ url: '/pages/index/index' })
            }
        })
    },
    async search() {
        const that = this;
        let lesson_id = that.data.lesson_id;
        let info = { skip: that.data.skip, limit: that.data.limit, lesson_id: lesson_id };
        let res = await app.$get(`/tempLessonApply`, { ...info, ...that.data.search });
        if (res.errcode == '0') {
            let list = [...that.data.list, ...res.data];
            that.setData({ list });
            that.setData({ total: res.total });
        }
        else { wx.showToast({ title: res.errmsg, icon: 'none' }) }
    },
    // 分页
    toPage: function () {
        const that = this;
        let list = that.data.list;
        let limit = that.data.limit;
        if (that.data.total > list.length) {
            wx.showLoading({ title: '加载中', mask: true })
            let page = that.data.page + 1;
            that.setData({ page: page })
            let skip = page * limit;
            that.setData({ skip: skip })
            that.watchLogin();
            wx.hideLoading()
        } else { wx.showToast({ title: '没有更多数据了', icon: 'none', duration: 2000 }) }
    },

    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide: function () {
        const that = this;
        that.clearPage();
    },

    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload: function () {

    },

    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh: function () {

    },

    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom: function () {

    },

    /**
     * 用户点击右上角分享
     */
    onShareAppMessage: function () {

    }
})