const fs = require( 'fs-extra' );
const bodyParser = require( 'body-parser' );
const cors = require( 'cors' );
const express = require( 'express' );

/*******************************************

SEE https://gitea.ndda.fr/apxtrib/apxtrib/wiki/Devrules
To have a quick understanding and convention before doing deeply in source code

*********************************************/
// to make absolute path with `${__base}relativepath`
global.__base = __dirname +'/';
// check setup
if( !fs.existsSync( '/etc/nginx/nginx.conf' ) ) {
	console.log( '\x1b[31m Check documentation, nginx have to be installed on this server first, no /etc/nginx/nginx.conf available, install then rerun yarn command.' );
	process.exit();
}
if( !fs.existsSync( './nationchains/tribes/index/conf.json' ) ) {
	// this town is not set
		console.log( `\x1b[42m############################################################################################\x1b[0m\n\x1b[42mWellcome into apxtrib, you must first init your town and tribes by a 'yarn setup'.          \x1b[0m \n\x1b[42mThen 'yarn dev' or 'yarn startpm2' or 'yarn unittest'. Check README's project to learn more.\x1b[0m\n\x1b[42m############################################################################################\x1b[0m` );
		process.exit();
}
const config = require( './nationchains/tribes/index/conf.json' );
// Tribes allow to get local apxtrib instance context
// dataclient .tribeids [] .DOMs [] .routes (plugins {url:name route:path}) .appname {tribeid:[website]}
const dataclient = require( './app/models/Tribes' )
	.init();
console.log( 'allowed DOMs to access to this apxtrib server: ', dataclient.DOMs )
const app = express();

Object.keys(config.appset).forEach(p=>{
	app.set(p,config.appset[p])
})
app.set( 'trust proxy', true );
// To set depending of data form or get size to send
app.use( bodyParser.urlencoded( config.bodyparse.urlencoded ) );
// To set depending of post put json data size to send
app.use( express.json() )
app.use( bodyParser.json( config.bodyparse.json ) );
app.locals.tribeids = dataclient.tribeids;
console.log( 'app.locals.tribeids', app.locals.tribeids );
// User token authentification and user init user search
const datauser = require( './models/Pagans' )
	.init( dataclient.tribeids );
app.locals.tokens = datauser.tokens;
console.log( 'app.locals.tokens key ', Object.keys( app.locals.tokens ) )
// Cors management
const corsOptions = {
	origin: ( origin, callback ) => {
		if( origin === undefined ) {
			callback( null, true );
		} else if( origin.indexOf( 'chrome-extension' ) > -1 ) {
			callback( null, true );
		} else {
			//console.log( 'origin', origin )
			//marchais avant modif eslint const rematch = ( /^https?\:\/\/(.*)\:.*/g ).exec( origin )
			const rematch = ( /^https?:\/\/(.*):.*/g )
				.exec( origin )
			//console.log( rematch )
			let tmp = origin.replace( /http.?:\/\//g, '' )
				.split( '.' )

			if( rematch && rematch.length > 1 ) tmp = rematch[ 1 ].split( '.' );
			//console.log( 'tmp', tmp )
			let dom = tmp[ tmp.length - 1 ];
			if( tmp.length > 1 ) {
				dom = `${tmp[tmp.length-2]}.${tmp[tmp.length-1]}`
			}
			console.log( `origin: ${origin}, dom:${dom}, CORS allowed? : ${dataclient.DOMs.includes( dom )}` );
			if( dataclient.DOMs.includes( dom ) ) {
				callback( null, true )
			} else {
				console.log( `Origin is not allowed by CORS` );
				callback( new Error( 'Not allowed by CORS' ) );
			}
		}
	},
	exposedHeaders: Object.keys( config.exposedHeaders )
};
// CORS
app.use( cors( corsOptions ) );
// Static Routes
app.use( express.static( `${__dirname}/tribes/${config.mayorId}/www/cdn/public`, {
	dotfiles: 'allow'
} ) );

//Allow to public access a space dev delivered by apxtrib
// this is just a static open route for dev purpose,
// for production, we'll use a nginx static set to /www/app/appname
/*console.log( `${config.dnsapxtrib}/space/tribeid/website`, dataclient.appname );
Object.keys( dataclient.appname )
	.forEach( cid => {
		dataclient.appname[ cid ].forEach( website => {
			app.use( `/space/${cid}/${website}`, express.static( `${config.tribes}/${cid}/spacedev/${website}` ) );
		} )
	} );
*/
// Routers add any routes from /routes and /plugins
console.log( 'Routes available on this apxtrib instance' );
console.log( dataclient.routes );
// prefix only use for dev purpose in production a proxy nginx redirect /app/ to node apxtrib

dataclient.routes.forEach( r => {
	try {
		app.use( r.url, require( r.route ) );
	} catch ( err ) {
		console.log( `\x1b[31m!!! WARNING issue with route ${r.route} from ${r.url} check err if route is key then solve err, if not just be aware that this route won't work on your server. If you are not the maintainer and no turn around please contact the email maintainer.\x1b[0m` )
		console.log( 'raise err-:', err );
	}
} )
app.listen( config.porthttp, () => {
	console.log( `check in your browser that api works http://${config.dnsapxtrib}:${config.porthttp}` );
} );

console.log( "\x1b[42m\x1b[37m", "Made with love for people's freedom, enjoy !!!", "\x1b[0m" );