const { parse } = require("url");

// mock tableListDataSource
let tableListDataSource = [];
for (let i = 0; i < 46; i += 1) {
  tableListDataSource.push({
    key: i,
    disabled: i % 6 === 0,
    href: "https://ant.design",
    avatar: [
      "https://gw.alipayobjects.com/zos/rmsportal/eeHMaZBwmTvLdIwMfBpg.png",
      "https://gw.alipayobjects.com/zos/rmsportal/udxAbMEhpwthVVcjLXik.png"
    ][i % 2],
    name: `TradeCode ${i}`,
    title: `一个任务名称 ${i}`,
    owner: "曲丽丽",
    desc: "这是一段描述",
    callNo: Math.floor(Math.random() * 1000),
    status: Math.floor(Math.random() * 10) % 4,
    updatedAt: new Date(`2017-07-${Math.floor(i / 2) + 1}`),
    createdAt: new Date(`2017-07-${Math.floor(i / 2) + 1}`),
    progress: Math.ceil(Math.random() * 100)
  });
}

function getRule(req, res, u) {
  let url = u;
  if (!url || Object.prototype.toString.call(url) !== "[object String]") {
    url = req.url; // eslint-disable-line
  }

  const params = parse(url, true).query;

  let dataSource = tableListDataSource;

  if (params.sorter) {
    const s = params.sorter.split("_");
    dataSource = dataSource.sort((prev, next) => {
      if (s[1] === "descend") {
        return next[s[0]] - prev[s[0]];
      }
      return prev[s[0]] - next[s[0]];
    });
  }

  if (params.status) {
    const status = params.status.split(",");
    let filterDataSource = [];
    status.forEach(s => {
      filterDataSource = filterDataSource.concat(
        dataSource.filter(
          data => parseInt(data.status, 10) === parseInt(s[0], 10)
        )
      );
    });
    dataSource = filterDataSource;
  }

  if (params.name) {
    dataSource = dataSource.filter(data => data.name.indexOf(params.name) > -1);
  }

  let pageSize = 10;
  if (params.pageSize) {
    pageSize = params.pageSize * 1;
  }

  const result = {
    list: dataSource,
    pagination: {
      total: dataSource.length,
      pageSize,
      current: parseInt(params.currentPage, 10) || 1
    }
  };

  return res.json(result);
}

function postRule(req, res, u, b) {
  let url = u;
  if (!url || Object.prototype.toString.call(url) !== "[object String]") {
    url = req.url; // eslint-disable-line
  }

  const body = (b && b.body) || req.body;
  const { method, name, desc, key } = body;

  switch (method) {
    /* eslint no-case-declarations:0 */
    case "delete":
      tableListDataSource = tableListDataSource.filter(
        item => key.indexOf(item.key) === -1
      );
      break;
    case "post":
      const i = Math.ceil(Math.random() * 10000);
      tableListDataSource.unshift({
        key: i,
        href: "https://ant.design",
        avatar: [
          "https://gw.alipayobjects.com/zos/rmsportal/eeHMaZBwmTvLdIwMfBpg.png",
          "https://gw.alipayobjects.com/zos/rmsportal/udxAbMEhpwthVVcjLXik.png"
        ][i % 2],
        name: `TradeCode ${i}`,
        title: `一个任务名称 ${i}`,
        owner: "曲丽丽",
        desc,
        callNo: Math.floor(Math.random() * 1000),
        status: Math.floor(Math.random() * 10) % 2,
        updatedAt: new Date(),
        createdAt: new Date(),
        progress: Math.ceil(Math.random() * 100)
      });
      break;
    case "update":
      tableListDataSource = tableListDataSource.map(item => {
        if (item.key === key) {
          Object.assign(item, { desc, name });
          return item;
        }
        return item;
      });
      break;
    default:
      break;
  }

  return getRule(req, res, u);
}

module.exports = {
  "GET /api/rule": getRule,
  "POST /api/rule": postRule
};