const express = require('express')
const app = express()
const request = require('request');

const URL = {
  index: 'http://v.juhe.cn/weather/index',
  key: '62a1ba7a26c06fa3720a8e91c103d5b5'
}

app.all('*', function (req, res, next) {
  res.header('Access-Control-Allow-Origin', '*');
  res.header('Access-Control-Allow-Headers', 'Content-Type');
  res.header('Access-Control-Allow-Methods', '*');
  res.header('Content-Type', 'application/json;charset=utf-8');
  next();
});

// http://127.0.0.1:3000/weather/index
app.get('/weather/index', function (req, res) {
  var cityname = req.query.cityname;
  console.log(`${URL.index}?format=2&cityname=${encodeURI(cityname)}&key=${URL.key}`);
  
  request(`${URL.index}?format=2&cityname=${encodeURI(cityname)}&key=${URL.key}`, function (error, response, body) {
    res.json(JSON.parse(body))
  });
})

app.listen(3000, function () {
  console.log('node app listening on port 3000!')
})