82 lines
2.8 KiB
JavaScript
82 lines
2.8 KiB
JavaScript
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// required packages
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var bodyParser = require('body-parser');
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var urlencodedParser = bodyParser.urlencoded({extended: false});
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var fs = require('fs');
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// read the data file
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function readData(fileName){
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let dataRead = fs.readFileSync('./data/' + fileName + '.json');
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let infoRead = JSON.parse(dataRead);
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return infoRead;
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}
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// read the data file
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function writeData(info, fileName){
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data = JSON.stringify(info);
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fs.writeFileSync('./data/' + fileName + '.json', data);
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}
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// update the data file, I use "name" to be equal to fruit, or animal or color
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// to match with the file names
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// I assume we always just add 1 to a single item
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function combineCounts(name, value){
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// console.log(value);
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info = readData(name);
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// will be useful for text entry, since the item typed in might not be in the list
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var found = 0;
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for (var i=0; i<info.length; i++){
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if (info[i][name] === value){
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info[i].count = parseInt(info[i].count) + 1;
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found = 1;
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}
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}
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if (found === 0){
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info.push({[name] : value, count: 1});
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}
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writeData(info, name);
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}
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// This is the controler per se, with the get/post
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module.exports = function(app){
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// when a user goes to localhost:3000/analysis
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// serve a template (ejs file) which will include the data from the data files
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app.get('/analysis', function(req, res){
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var color = readData("color");
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var fruit = readData("fruit");
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var animal = readData("animal");
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res.render('showResults', {results: [color, fruit, animal]});
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console.log([color, fruit, animal]);
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});
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// when a user goes to localhost:3000/niceSurvey
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// serve a static html (the survey itself to fill in)
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app.get('/niceSurvey', function(req, res){
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res.sendFile(__dirname+'/views/niceSurvey.html');
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});
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// when a user types SUBMIT in localhost:3000/niceSurvey
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// the action.js code will POST, and what is sent in the POST
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// will be recuperated here, parsed and used to update the data files
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app.post('/niceSurvey', urlencodedParser, function(req, res){
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console.log(req.body);
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var json = req.body;
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for (var key in json){
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console.log(key + ": " + json[key]);
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// in the case of checkboxes, the user might check more than one
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if ((key === "color") && (json[key].length === 2)){
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for (var item in json[key]){
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combineCounts(key, json[key][item]);
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}
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}
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else {
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combineCounts(key, json[key]);
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}
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}
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// mystery line... (if I take it out, the SUBMIT button does change)
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// if anyone can figure this out, let me know!
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res.sendFile(__dirname + "/views/niceSurvey.html");
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});
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};
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