const express = require('express');
const bodyParser = require('body-parser');
const app = express();

app.use(bodyParser.json());
app.set('view engine', 'ejs');
app.use(express.static('static'));

app.get('/', (req, res) => {
    res.render('index.ejs');
});

app.post('/write', (req, res) => {
    let filename = require('crypto').randomBytes(16).toString('hex');
    let datainput = req.body;
    let fs = require('fs');

    if(datainput.text == undefined || datainput.text == "") return res.send('Error: Text is invalid').status(403);
    if(fs.existsSync(__dirname+'/bin/'+filename+'.json')) return res.send('Internal error - randomly generated ID already exists? Try again.').status(500);

    let data = {
        name: datainput.name == undefined ? '' : datainput.name,
        text: datainput.text
    }

    fs.writeFile(__dirname+'/bin/'+filename+'.json', JSON.stringify(data), (err) => {
        if (err) {
            console.log(err);
            res.status(500);
        } else {
            res.send(filename).status(200);
        }
    });
});

app.get('/new', (req, res) => {
    res.render('new.ejs');
});

app.get('/paste/:id', (req, res) => {
    let fs = require('fs');
    let filename = req.params.id;
    if(!fs.existsSync(__dirname+'/bin/'+filename+'.json')) return res.send('Error: Paste not found').status(404);
    let data = JSON.parse(fs.readFileSync(__dirname+'/bin/'+filename+'.json', 'utf8'));
    res.render('paste.ejs', {
        name: data.name,
        text: data.text,
        id: filename
    });
});

app.listen(30180);