routes.js

const config = require("./config")
const express = require("express");
const multer = require('multer');
const router = express.Router();
const request = require("request");
const upload = multer();

router.get("/", function(req, res){
  res.render("main")
})

router.post("/getRank", upload.none(), async (req, res) => {

    // RAPIDapi secret from config.js(dev) or Heroku config var
    let SECRET;
    if(process.env.RAPIDapi){
      SECRET = process.env.RAPIDapi
    } else if(config.RAPIDapi){
      SECRET = config.RAPIDapi
    } else {
      return res.status(500).send("RAPIDapi key not found")
    }

    // Double check site and key is received
    if(req.body.site === undefined || req.body.site === ""){
      return res.status(400).send("Site URL required")
    }
    if(req.body.key=== undefined || req.body.key === ""){
      return res.status(400).send("Keyword required")
    }

    //Format the query
    function parseQuery(){
      str = ""
      for(const word of req.body.key.split(" ")){
        if(str.length > 0){
          str += "+"
        }
        str += word
      }
      return str
    }
    let query = parseQuery()

    // Format RAPIDapi options
    var options = {
      method: 'GET',
      url: 'https://google-search3.p.rapidapi.com/api/v1/search/q=' + query + "&num=100",
      headers: {
        'x-rapidapi-host': 'google-search3.p.rapidapi.com',
        'x-rapidapi-key': SECRET,
        useQueryString: true
      }
    };

    // Send the query to RAPIDapi
    request(options, async function (error, response, body) {
    	if (error) throw new Error(error)
      obj = JSON.parse(body)
      let pos = 0
      let link = ""

      //Loop the results to find the position of the URL
      async function getRank(){
        for(let i=0; i<obj.results.length; i++){
          if(obj.results[i].link.includes(req.body.site)){
            pos = i
            link = obj.results[i].link
            break
          }
        }
      }
      await getRank()

      //Return the position and the specific link that was found
    	return res.status(200).send({pos:pos, link:link});
    });
});

// Site Map
router.get('/sitemap.xml', (req, res) =>{
	res.set('Content-Type', 'text/xml')
	res.status(200).sendFile("sitemap.xml", {root: "./"});
});

// Robots
router.get('/robots.txt', (req, res) =>{
	res.set('Content-Type', 'text/plain')
	res.status(200).sendFile("robots.txt", {root: "./"});
});

// 404
router.use((req, res, next) => {
    return res.status(404).render("404.pug")
});


module.exports = router;