import express from 'express';
import * as http from 'http';
import * as dotenv from 'dotenv';
import swaggerUi from 'swagger-ui-express';
import swaggerJSDoc from 'swagger-jsdoc';
import logger from './src/middleware/logger';

// Router imports
import {calendarRouter} from './src/models/calendar/Calendar.router';


let cors = require('cors');

dotenv.config();

if (!process.env.PORT) {
	logger.error('No port');
	process.exit(1);
}

const port: number = parseInt(process.env.PORT, 10);

const app: express.Application = express();
const server: http.Server = http.createServer(app);

// here we are adding middleware to parse all incoming requests as JSON
app.use(express.json());

// Configure CORS
let allowedHosts = [
	'https://www.nachklang.art',
	'https://calendar.nachklang.art',
];
app.use(cors({
	origin: function (origin: any, callback: any) {
		// Allow requests with no origin
		if (!origin) return callback(null, true);

		// Block requests with wrong origin
		if (allowedHosts.indexOf(origin) === -1) {
			return callback(new Error('The CORS policy doesn\'t allow access for your origin.'), false);
		}

		// Allow all other requests
		return callback(null, true);
	}
}));

// Swagger documentation
const swaggerDefinition = {
	openapi: '3.0.0',
	info: {
		title: 'Nachklang e.V. REST API',
		version: '0.1.0',
		license: {
			name: 'Licensed Under MIT',
			url: 'https://spdx.org/licenses/MIT.html'
		},
		contact: {
			name: 'Nachklang e.V.',
			url: 'https://www.nachklang.art'
		}
	}
};

const options = {
	swaggerDefinition,
	// Paths to files containing OpenAPI definitions
	apis: [
		'./src/models/**/*.router.ts'
	]
};

const swaggerSpec = swaggerJSDoc(options);

app.use(
	'/docs',
	swaggerUi.serve,
	swaggerUi.setup(swaggerSpec)
);

// Add routers
app.use('/calendar', calendarRouter);

// this is a simple route to make sure everything is working properly
app.get('/', (req: express.Request, res: express.Response) => {
	res.status(200).send('Welcome to the Nachklang e.V. REST API!');
});

server.listen(port, () => {
	logger.info('Server listening on Port ' + port);
});