const express = require('express');
const banner = require('../../db/models/banner');
const order = require('../../db/models/order');
const course = require('../../db/models/course');
const chapter = require('../../db/models/chapter');
const teacher = require('../../db/models/teacher');
const { COURSE_TYPE, ORDER_STATUS, COURSE_STATUS } = require('../config');
const { Op } = require('sequelize');
const { getAuthUrl } = require('../../utils/qiniu');

const router = express.Router();

function m3u8List(data) {
  const { video } = data;
  const link = video.slice(0, video.lastIndexOf('.')).replace('static.fuxi', 'video.fuxi');
  data.m3u8 = [
    {
      name: '超清',
      definition: '1080p',
      url: getAuthUrl(`${link}/1080/index.m3u8?pm3u8/0`),
    },
    {
      name: '高清',
      definition: '720p',
      url: getAuthUrl(`${link}/720/index.m3u8?pm3u8/0`),
    },
    {
      name: '标清',
      definition: '480p',
      url: getAuthUrl(`${link}/480/index.m3u8?pm3u8/0`),
    },
  ];
}

/* GET home page. */
router.get('/:id', async (req, res) => {
  const { id } = req.params;

  const cdata = await course.findOne({ where: { id, status: COURSE_STATUS.已上线 } });
  if (!cdata) {
    return res.renderEx('error', { title: '发生错误了' });
  }
  cdata.payHref = `/pay/${id}`;
  const otherdata = await course.findAll({
    where: { type: cdata.type, id: { [Op.not]: id }, status: COURSE_STATUS.已上线 },
    attributes: ['id', 'detailimg', 'title', 'price'],
  });
  const tdata = await Promise.all(
    cdata.teacherId.map(item => {
      return teacher.findOne({ where: { id: item } });
    })
  );

  const option = {
    title: '课程详情页',
    course: cdata,
    otherCourse: otherdata,
    teacher: tdata,
  };
  // 未登陆
  if (!req.uid) {
    return res.renderEx('detail', option);
  }
  const odata = await order.findOne({
    where: { uid: req.uid, cid: id, status: { [Op.in]: [ORDER_STATUS.已支付, ORDER_STATUS.渠道] } },
  });
  // 未购买
  if (!odata) {
    return res.renderEx('detail', option);
  }
  const chdata = await chapter.findAll({
    where: { cid: id, status: 1 },
  });
  if (chdata.length) {
    [option.curChapter] = chdata;
    option.curChapter.current = true;
    m3u8List(option.curChapter);
  }
  option.chapter = chdata;
  res.renderEx('video', option);
});
router.get('/:id/:chapterId', async (req, res) => {
  const { id, chapterId } = req.params;
  // 未登陆
  if (!req.uid) {
    return res.redirect(`/course/${id}`);
  }
  const odata = await order.findOne({
    where: { uid: req.uid, cid: id, status: { [Op.in]: [ORDER_STATUS.已支付, ORDER_STATUS.渠道] } },
  });
  if (!odata) {
    return res.redirect(`/course/${id}`);
  }
  const cdata = await course.findOne({ where: { id } });
  if (!cdata) {
    return res.renderEx('error', { title: '发生错误了' });
  }
  const otherdata = await course.findAll({
    where: { type: cdata.type, id: { [Op.not]: id }, status: COURSE_STATUS.已上线 },
    attributes: ['id', 'detailimg', 'title', 'price'],
  });
  const tdata = await Promise.all(
    cdata.teacherId.map(item => {
      return teacher.findOne({ where: { id: item } });
    })
  );
  const chdata = await chapter.findAll({
    where: { cid: id, status: 1 },
  });
  const option = {
    title: '课程详情页',
    course: cdata,
    otherCourse: otherdata,
    teacher: tdata,
    chapter: chdata,
    curChapter: null,
  };
  for (const i in chdata) {
    // eslint-disable-next-line eqeqeq
    if (chdata[i].id == chapterId) {
      chdata[i].current = true;
      option.curChapter = chdata[i];
      m3u8List(option.curChapter);
      break;
    }
  }
  if (!option.curChapter) {
    return res.renderEx('error', { title: '章节不存在' });
  }
  res.renderEx('video', option);
});
module.exports = router;