var express = require("express");
var hbs = require('express-hbs');
require('handlebars-form-helpers').register(hbs.handlebars);
var bodyParser = require("body-parser");
var app = express();
var winston = require('winston');
winston.add(winston.transports.File, { filename: './logs/notes.kaplon.us.log', maxsize: 5000000 });  // 5MB
var fileSystem = require('fs');

app.use(bodyParser.text());   // Use defaults for now, size limit is 100kb.

// Use `.hbs` for extensions and find partials in `views/partials`.
app.engine('hbs', hbs.express4({
    partialsDir: __dirname + '/views/partials'
}));
app.set('view engine', 'hbs');
app.set('views', __dirname + '/views');
app.use('/lib', express.static('lib')); // these 3 seem hacky, but doing it here instead of view.
app.use('/keymap', express.static('keymap'));
app.use('/mode', express.static('mode'));

var notePath = __dirname + '/note-data/allNotes.txt';

app.get('/', function(req, res){
    winston.info("GET /");
    // Get curent text from allNotes.txt.
    // How to pass that text into index.html editor control??? Still need Handlebars???
    // i may be grokking it...need to keep handlebars, though.
    // read contents of allNotes.txt into a variable.
    // pass that variable as data to handlebars template, {{notetxt}}.
    fileSystem.readFile(notePath, {encoding: 'utf-8'}, function(err,data){
        if (!err){
            winston.info('successful file read');
            //response.writeHead(200, {'Content-Type': 'text/html'});
            //response.write(data);
            //response.end();
            res.render('index', {notetxt: data}, function(err, html) {
                if(err !== null) {
                    winston.error(err);
                } else {
                    res.send(html);
                }
            });
        }else{
            winston.error(err);
        }
    });
});

app.post('/', function(req, res){
    winston.info('POST received');
    // Stage and commit changes to allNotes.txt.
    // quick/dirty poc is to do a fileSystem.write to create a new file w/contents of req.body!
    var now = Date.now();
    fileSystem.writeFile(__dirname + '/note-data/test-' + now + '.txt', req.body, function(err){
        if (err) { winston.error(err); }
        winston.info('new test file written');
    });
    res.status(204).send('POST received');
});

app.listen(3000, function() {
    winston.info("Started on PORT 3000");
});