"use strict";

const express = require('express');
const path = require('path');
const favicon = require('serve-favicon');
const bodyParser = require('body-parser');
const requestLogger = require('morgan');
const debug = require('debug')('cc:server');
const cors = require('cors')
const mongoose = require('mongoose');

// own modules
const config = require('./config/config');
const urls = require('./config/api-url');
const restAPIchecks = require('./middleware/request-checks.js');
const errorResponseWare = require('./middleware/error-response');
const apiAuthenticationMiddleware = require('./middleware/auth-middleware');
const signatureCronJob = require('./cron-job/update-signatures');

// router modules
const authenticateRouter = require('./routes/authenticate');
const overviewRouter = require('./routes/overview');
const userRouter = require('./routes/users');
const squadRouter = require('./routes/squads');
const rankRouter = require('./routes/ranks');
const decorationRouter = require('./routes/decorations');
const awardingRouter = require('./routes/awardings');
const signatureRouter = require('./routes/signatures');
const commandRouter = require('./routes/command');

// Configuration ***********************************
// mongoose promise setup
mongoose.Promise = global.Promise;

// app creation
const app = express();

// Middlewares *************************************************

// setup CORS-middleware
const corsOptions = {
  methods: ['GET'],
  optionsSuccessStatus: 200
};
app.use(cors(corsOptions));

app.use(favicon(path.join(__dirname + '/..', 'public', 'favicon.ico')));
app.use(express.static(path.join(__dirname + '/..', 'public')));
app.use(bodyParser.json());

// API request checks for API-version and JSON etc.
app.use(restAPIchecks);

// Routes ******************************************************
app.use(urls.signatures, signatureRouter);

// initialize logging here to exclude /signature requests
if (!process.env.NODE_ENV) {
  // development logging
  app.use(requestLogger('dev'));
} else if (process.env.NODE_ENV !== config.test.env) {
  // production logging, apache style
  app.use(requestLogger(':date[iso] :remote-addr :method :url :status :response-time ms'));
}

app.use(urls.auth, authenticateRouter);
app.use(urls.overview, overviewRouter);
app.use(urls.users, userRouter);
app.use(urls.squads, squadRouter);
app.use(urls.ranks, rankRouter);
app.use(urls.decorations, decorationRouter);
app.use(urls.awards, apiAuthenticationMiddleware, awardingRouter);
app.use(urls.command, apiAuthenticationMiddleware, commandRouter);

// send index.html on all different paths
app.use(function (req, res) {
  res.sendFile("public/index.html", {root: __dirname + '/..'});
});


// (from express-generator boilerplate  standard code)
// Errorhandling and requests without proper URLs ************************
// catch 404 and forward to error handler
app.use((req, res, next) => {
  debug('Catching unmatched request to answer with 404');
  let err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// register error handlers
errorResponseWare(app);

// Start the server
if (process.env.NODE_ENV !== config.test.env) {
  mongoose.connect(config.database.uri + config.database.db);
  app.listen(config.port, (err) => {
    if (err !== undefined) {
      debug('Error on startup, ', err);
    }
    else {
      debug('Listening on port ' + config.port);
      signatureCronJob.start();
    }
  });
} else {
  mongoose.connect(config.database.uri + config.test.db);
  app.listen(config.test.port);
}

module.exports = app;