eve.js

var querystring = require( 'querystring' );
var Buffer = require( 'buffer' ).Buffer;
var request = require( 'request' );

var EVE = {
	client_id: null,
	client_secret: null,
	redirect_url: null,
	scope: [],
	access_token: null,
	refresh_token: null,
	api_url: 'https://esi.evetech.net',
	authorize_url: 'https://login.eveonline.com/oauth',

	generateAuthoriseURL: function( state ) {
		var query = {
			response_type: 'code',
			redirect_uri: EVE.redirect_url,
			client_id: EVE.client_id,
			scope: EVE.scope.join( ' ' ),
			state: state
		};

		return EVE.authorize_url + '/authorize?' + querystring.stringify( query );
	},

	getToken: function( authorisation_code, cb ) {
		var options = {
			url: EVE.authorize_url + '/token',
			method: 'POST',
			headers: {
				'Authorization': 'Basic ' + Buffer.from( EVE.client_id + ':' + EVE.client_secret, 'ascii' ).toString( 'base64' ),
				'Content-Type': 'application/x-www-form-urlencoded',
				'Host': 'login.eveonline.com',
			},
			body: querystring.stringify ( {
				'grant_type': 'authorization_code',
				'code': authorisation_code
			} )
		}

		request( options, function( err, res, body ) {
			if ( res.statusCode == 200 ) {
				console.log( 'Authorised:' );
				console.log( body );

				EVE.access_token = body.access_token;
				EVE.refresh_token = body.refresh_token;

				if ( cb ) cb( body );
			} else if ( res.statusCode == 401 ) {
				console.log( 'Unauthorised:' );
				console.log( '\n\n\nRES: ' );
				console.log( res );
				if ( cb ) cb( 401 );
			} else {
				console.log( 'Unknown Error: ' );

				console.log( '\n\n\nERR: ' );
				console.log( err );
				console.log( '\n\n\nRES: ' );
				console.log( res );

				console.log( "Status: " + res.statusCode );

				if ( cb ) cb( res.statusCode );
			}
		} );
	},

	refreshToken: function( cb ) {
		var options = {
			url: EVE.authorize_url + '/token',
			method: 'POST',
			headers: {
				'Authorization': 'Basic ' + Buffer.from( EVE.client_id + ':' + EVE.client_secret, 'ascii' ).toString( 'base64' ),
				'Content-Type': 'application/x-www-form-urlencoded',
				'Host': 'login.eveonline.com',
			},
			body: querystring.stringify ( {
				'grant_type': 'refresh_token',
				'refresh_token': EVE.refresh_token
			} )
		}

		request( options, function( err, res, body ) {
			if ( res.statusCode == 200 ) {
				body = JSON.parse( body );

				EVE.access_token = body.access_token;
				EVE.refresh_token = body.refresh_token;

				if ( cb ) cb( body );
			} else if ( res.statusCode == 401 ) {
				console.log( 'Unauthorised:' );
				console.log( '\n\n\nRES: ' );
				console.log( res );
				if ( cb ) cb( 401 );
			} else {
				console.log( 'Unknown Error: ' );

				console.log( '\n\n\nERR: ' );
				console.log( err );
				console.log( '\n\n\nRES: ' );
				console.log( res );

				console.log( "Status: " + res.statusCode );

				if ( cb ) cb( res.statusCode );
			}
		} );
	},

	getESI: function( path, cb ) {
		var options = {
			url: EVE.api_url + path,
			method: 'GET',
			headers: {
				'Authorization': 'Bearer ' + EVE.access_token
			}
		}

		request( options, function( err, res, body ) {
			if ( res.statusCode == 200 ) {
				if ( cb ) cb( JSON.parse( body ) );
			} else {
				if ( cb ) cb( false, res );
			}
		} );
	},

	postESI: function( path, body, cb ) {
		var options = {
			url: EVE.api_url + path,
			method: 'POST',
			headers: {
				'Authorization': 'Bearer ' + EVE.access_token
			}
		}

		request( options, function( err, res, body ) {
			if ( res.statusCode == 200 ) {
				if ( cb ) cb( JSON.parse( body ) );
			} else {
				if ( cb ) cb( false, res );
			}
		} );
	},

	verify: function( cb ) {
		EVE.getESI( '/verify', cb );
	},

	getCharacter: function( character_id, cb ) {
		EVE.getESI( '/v4/characters/' + character_id, cb );
	},

	getCorporationAssets: function( corporation_id, cb ) {
		EVE.getESI( '/v3/corporations/' + corporation_id + '/assets', cb );
	},

	getMarketPrices: function( cb ) {
		EVE.getESI( '/v1/markets/prices', cb );
	},
};

module.exports = function( config ) {
	if ( config.client_id )			EVE.client_id = config.client_id;
	if ( config.client_secret )		EVE.client_secret = config.client_secret;
	if ( config.redirect_url )		EVE.redirect_url = config.redirect_url;
	if ( config.scope )				EVE.scope = config.scope;
	if ( config.access_token )		EVE.access_token = config.access_token;
	if ( config.refresh_token )		EVE.refresh_token = config.refresh_token;
	if ( config.api_url )			EVE.api_url = config.api_url;

	return EVE;
}