const http = require('http');
const express = require('express');
const fs = require('fs');
const url = require('url');
const crypto = require('crypto');
const session = require('express-session');
const { query } = require('express');
const FileStore = require('session-file-store')(session)

var port = process.env.PORT || 3000;

const app = express();

if(!fs.existsSync('repo')) fs.mkdirSync('repo');

var secret;

var logString = "";

var credString;
var credentials;

var promoString;
var promotions;

if(!fs.existsSync('repo/secret')){
    secret = crypto.randomBytes(35).toString('hex');
    fs.writeFileSync('repo/secret', secret);
}else{
    secret = fs.readFileSync('repo/secret');
}


app.use(session({
    secret: secret.toString(),
    saveUninitialized:false,
    resave:false,
   	cookie: {maxAge: 100000000000},
    store:new FileStore()
}));

function report(str){
    console.log(str);
    logString = logString.concat('\n', str);
}

function randomIntForPrezenta() {
    return Math.floor(Math.random() * (999 - 100 + 1) + 100);
}

if(fs.existsSync('repo/signatures')){
    sigString = fs.readFileSync('repo/signatures')
    signatures = JSON.parse(sigString);
}else{
    signatures = {};
    signatures.i_buffer = 0;
    signatures.signatures = {};
    fs.writeFileSync('repo/signatures', JSON.stringify(signatures))
}

app.get('/api_sign', (request, response) => {
    if(!request.session.signed && request.session.legitimate === "true")
    if(request.query.name && request.query.domeniu && request.query.clasa){
        report("sign");
        if(request.query.name.length <= 45 && request.query.domeniu.length <= 45 && request.query.clasa.length <= 45){
            signatures.signatures[signatures.i_buffer] = {};
            signatures.signatures[signatures.i_buffer].name = request.query.name.replace(/[^a-z0-9]/gi, ' ');
            signatures.signatures[signatures.i_buffer].domeniu = request.query.domeniu.replace(/[^a-z0-9]/gi, ' ');
            signatures.signatures[signatures.i_buffer].clasa = request.query.clasa.replace(/[^a-z0-9]/gi, ' ');
            signatures.i_buffer++;
            request.session.signed = true;
            response.redirect('/multumesc');
            response.end();
            fs.writeFileSync('repo/signatures', JSON.stringify(signatures))
        }
    }else{
        response.writeHead(200);
        response.end("INVALID REQUEST")
    }
    else{
        response.writeHead(200);
        response.end("ALREADY SIGNED");
    }
})

app.get('/', (request, response) => {
    request.session.legitimate = "true";
    fs.readFile('./ui/homepage.html', function(error, content){
        if(error) report(error);

        content = content.toString().replace("$$SIGN$$", JSON.stringify(signatures));

        response.writeHead(200, {'Content-Type': 'text/html'});
        response.end(content);
    })
})

app.get('/semnez', (resource, response) => {
    fs.readFile('./ui/semnez.html', function(error, content){
        if(error) report(error);

        response.writeHead(200, {'Content-Type': 'text/html'});
        response.end(content);
    })
})
app.get('/multumesc', (resource, response) => {
    fs.readFile('./ui/multumesc.html', function(error, content){
        if(error) report(error);

        response.writeHead(200, {'Content-Type': 'text/html'});
        response.end(content);
    })
})

app.get('/resource/*', (request, response) => {
    var resource = request.path.slice(request.path.lastIndexOf('/'), request.path.end)
    fs.readFile('./assets/'+resource, function(error, content){
        if(error) report(error);

        if(resource.slice(resource.lastIndexOf('.'), resource.end) === "ttf") response.writeHead(200, {'Content-Type': 'font/ttf'});
        if(resource.slice(resource.lastIndexOf('.'), resource.end) === "json") response.writeHead(200, {'Content-Type': 'text/json'});
        if(resource.slice(resource.lastIndexOf('.'), resource.end) === "jpg") response.writeHead(200, {'Content-Type': 'image/jpeg'});

        response.end(content);
    })
})

app.get('/css', (request, response) => {
    fs.readFile('./css/dist.css', function(error, content){
        if(error) report(error);

        response.writeHead(200, {'Content-Type': 'text/css'});
        response.end(content);
    })
})




const server = http.createServer(app);
server.listen(port);