const express = require('express'); //引入express
const Mock = require('mockjs'); //引入mock
const fs = require('fs');
const app = express(); //实例化express


const {
	routerLog,
	writeLog
} = require('./writeLog');


app.use(function(req, res, next) {
	res.header("Access-Control-Allow-Origin", "*");
	res.header('Access-Control-Allow-Methods', 'PUT, GET, POST, DELETE, OPTIONS');
	res.header("Access-Control-Allow-Headers", "X-Requested-With");
	res.header('Access-Control-Allow-Headers', 'Content-Type');
	next();
});



fs.writeFile('./routerLog.md', ' \n # 路由 \n', function(error) {
	if (error) {
		console.log('写入失败')
	} else {
		console.log('markdown 写入路由记录')
	}
})

const directory = './data/';
loopPath(directory);
//循环目录
function loopPath(directory) {
  const paths = fs.readdirSync(directory);
  let logs = "";
  for (let i = 0; i < paths.length; i++) {
    const file = directory + paths[i];
    if (isDirectory(file)) {
      const subDirectory = file + "/";
      loopPath(subDirectory);
    } else {
      if (fs.existsSync(`${file}`)) {
        const dataConfigs = require(`${file}`);
        // console.log('dataConfigs', dataConfigs);

        const configs = dataConfigs.routerConfigs;
        const baseUrl = dataConfigs.basicRouteUrl;
        logs += `\n ## 路由  --- ${dataConfigs.basicRouteName}  \n\n`;
        for (let i = 0; i < configs.length; i++) {
          configs[i].responseExample = JSON.stringify(
            FormatMockData({
              data: configs[i].mockData
            })
          );
          logs += routerLog(configs[i]);
          const { url, type } = configs[i];
          const mockUrl = "/" + baseUrl + url;
          console.log("路由信息：", "url:", mockUrl, "type:", type);
          loopRouteConfig(mockUrl, configs[i]);
        }
      }
    }
  }
  writeLog(logs);
}
// 注册路由
function loopRouteConfig(mockUrl, { type, mockData }) {
  app[type](mockUrl, function(req, res) {
    res.json(
      FormatMockData({
        mockData
      })
    );
  });
}

// 是否为目录
function isDirectory(directory) {
  return fs.lstatSync(directory).isDirectory() ? true : false;
}

// mock 模拟数据 mock json
function FormatMockData({ mockData }) {
  const status200 = { code: 0, message: "成功" };
  return {
    ...status200,
    ...Mock.mock(mockData)
  };
}

app.listen('8090', () => {
	console.log('mock 模拟地址 ：http://localhost:8090/')
})