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

const app = express();

// Middleware declarations.
app.use(morgan('dev'));
app.use(bodyParser.json());
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// Routes.
app.use('/api/v1', require('./routes/api'));
app.use('/client', express.static(path.join(__dirname, 'dist')));
app.use('/admin', require('./routes/admin'));

//==============================================================================
// ERROR HANDLING
//==============================================================================

const ErrNotFound = new Error('Not Found');
ErrNotFound.status = 404;

// Catch 404 and forward to error handler.
app.use((req, res, next) => {
  next(ErrNotFound);
});

// General error handler. Respond with the message and error if we have it while
// returning a status code that makes sense.
if (app.get('env') === 'development') {
  app.use('/api', (err, req, res, next) => {
    res.status(err.status || 500);
    res.json({
      message: err.message,
      error: err
    });
  });

  app.use('/', (err, req, res, next) => {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

app.use('/api', (err, req, res, next) => {
  res.status(err.status || 500);
  res.json({
    message: err.message,
    error: {}
  });
});

app.use('/', (err, req, res, next) => {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});

module.exports = app;