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Voting
Voting
Commit f08d3d64 authored by Matthieu - Greep's avatar Matthieu - Greep
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Delete events.js, I don't need you anymore cause we have route

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    events.js deleted 100644 → 0
    View file @ 04d5a096
    const express = require('express');
    const fs = require('fs');
    function createRouter(db) {
    const router = express.Router();
    function isMapIdAndNameNotNull(req) {
    const mapId = req.body.mapId;
    const name = req.body.name;
    return mapId != null && name != null;
    }
    function isVoteRequestValid(req) {
    const userId = req.body.userId;
    const vote = req.body.vote;
    return userId != null && vote != null && isMapIdAndNameNotNull(req);
    }
    function isgetMapInfoValid(req) {
    const userId = req.body.userId;
    return userId != null && isMapIdAndNameNotNull(req);
    }
    const hasMap = function hasMap(req, res, next) {
    const mapId = req.body.mapId;
    if (isMapIdAndNameNotNull(req)) {
    const sql = 'SELECT count(*) as Maps From Map WHERE mapId = \"'+mapId+'\";';
    console.log('Map Select: ', sql);
    db.query(
    sql,
    (error, results) => {
    if (error) {
    console.log(error);
    res.status(500).json({status: 'error in hasMap'});
    } else {
    numberResults = results[0].Maps;
    if (numberResults === 1) next();
    else if (numberResults === 0) addMap(req, res, next);
    else res.status(500).json({status: 'There are multiple maps with the same id'});
    }
    });
    } else {
    res.status(500).json({status: 'JSON-Parameter are not valid'});
    }
    };
    const addMap = function addMap(req, res, next) {
    const mapId = req.body.mapId;
    const name = req.body.name;
    const sql = 'INSERT INTO Map (mapId, name) VALUES (\"'+mapId+'\", \"'+name+'\");';
    console.log('Map Insert: ', sql);
    db.query(
    sql,
    (error, results) => {
    if (error) {
    console.log(error);
    res.status(500).json({status: 'error in addMap'});
    } else {
    if (results.affectedRows === 1) next();
    else res.status(500).json({status: 'error in insertMap'});
    }
    });
    };
    const hasVote = function hasVote(req, res, next) {
    if (isVoteRequestValid(req)) {
    const userId = req.body.userId;
    const mapId = req.body.mapId;
    const sql = 'SELECT userId FROM Vote WHERE userId = \"'+ userId + '\" AND mapId = \"' + mapId + '\";';
    console.log('Map Insert: ', sql);
    db.query(
    sql,
    (error, results) => {
    if (error) {
    console.log(error);
    res.status(500).json({status: 'error in hasVote'});
    } else {
    if (results.length === 0) insertVote(req, res, next);
    else if (results.length === 1) updateVote(req, res, next);
    else res.status(500).json({status: 'too many votes by user'});
    }
    });
    } else {
    res.status(500).json({status: 'Vote Request is not valid'});
    }
    };
    const insertVote = function insertVote(req, res, next) {
    if (isVoteRequestValid(req)) {
    const userId = req.body.userId;
    const mapId = req.body.mapId;
    const vote = req.body.vote;
    const sql = 'INSERT INTO Vote (userId, mapId, vote) VALUES (\"'+ userId + '\", \"'+ mapId + '\", \"' + vote +'\");';
    console.log('Insert Vote: ', sql);
    db.query(
    sql,
    (error, results) => {
    if (error) {
    console.log(error);
    res.status(500).json({status: 'error in insertVote'});
    } else {
    if (results.affectedRows === 1) next();
    else res.status(500).json({status: 'error in insertVote'});
    }
    });
    } else {
    res.status(500).json({status: 'Vote Request is not valid'});
    }
    };
    const updateVote = function updateVote(req, res, next) {
    if (isVoteRequestValid(req)) {
    const userId = req.body.userId;
    const mapId = req.body.mapId;
    const vote = req.body.vote;
    const sql = 'UPDATE Vote SET userId = \"'+ userId + '\", mapId = \"'+ mapId + '\", vote = \"' + vote +'\" WHERE userID = \"'+ userId +'\" AND mapId = \"' + mapId + '\";';
    console.log('Update Vote: ', sql);
    db.query(
    sql,
    (error, results) => {
    if (error) {
    console.log(error);
    res.status(500).json({status: 'error in updateVote'});
    } else {
    if (results.affectedRows === 1) next();
    else res.status(500).json({status: 'error in updateVote'});
    }
    });
    } else {
    res.status(500).json({status: 'Vote Request is not valid'});
    }
    };
    const getMapInfo = function getMapInfo(req, res) {
    if (isVoteRequestValid(req)) {
    const mapId = req.body.mapId;
    const vote = req.body.vote;
    const sql = 'SELECT count(userId) as votes, round(avg(vote)) as average FROM Vote WHERE mapId LIKE \"'+ mapId + '\";';
    console.log('getMapInfo: ', sql);
    db.query(
    sql,
    (error, results) => {
    if (error) {
    console.log(error);
    res.status(500).json({status: 'error in getMapInfo'});
    } else {
    if (results.length === 1) {
    let average = results[0].average;
    let votes = results[0].votes;
    if (!average) average = 0;
    if (!votes) votes = 0;
    res.json({votes: votes, average: average, vote: vote});
    return;
    }
    res.status(500).json({status: 'unexpected result in getMapInfo'});
    }
    });
    } else {
    res.status(500).json({status: 'Vote Request is not valid'});
    }
    };
    const getVote = function getVote(req, res) {
    if (isgetMapInfoValid(req)) {
    const mapId = req.body.mapId;
    const userId = req.body.userId;
    const sql = 'SELECT vote FROM Vote WHERE mapId LIKE \"'+ mapId + '\" AND userId LIKE \"' + userId + '\";';
    console.log('Update Vote: ', sql);
    db.query(
    sql,
    (error, results) => {
    if (error) {
    console.log(error);
    res.status(500).json({status: 'error in getVote'});
    } else {
    if (results.length < 2) {
    let vote = -1;
    if (results.length === 1) {
    vote = results[0].vote;
    }
    if (!isNaN(vote)) {
    req.body.vote = vote;
    getMapInfo(req, res);
    return;
    }
    res.status(500).json({status: 'unexpected result in getVote'});
    } else {
    res.status(500).json({status: 'too many results in getVote'});
    }
    }
    });
    } else {
    res.status(500).json({status: 'Vote Request is not valid'});
    }
    };
    // the routes are defined here
    fs.readdir('./route', (err, files) => {
    if (err) {
    console.error(err);
    } else {
    files.forEach(file => {
    if (file.endsWith('.js')) {
    require('./route/' + file)(router);
    }
    });
    }
    });
    router.post('/setVote', [hasMap, hasVote, getMapInfo]);
    router.post('/getMapInfo', [hasMap, getVote]);
    return router;
    }
    module.exports = createRouter;
    index.js
    View file @ f08d3d64
    ......@@ -5,7 +5,6 @@ const express = require('express'),
    logger = require('morgan'),
    cookieParser = require('cookie-parser'),
    mysql = require('mysql'),
    //events = require('./events'),
    path = require('path'),
    fs = require('fs');
    ......
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