/* eslint-disable global-require*/
// ***** Load config *****
const SUPPRESS_NO_CONFIG_WARNING = process.env.SUPPRESS_NO_CONFIG_WARNING;
process.env.SUPPRESS_NO_CONFIG_WARNING = 'y';
import config from 'config';
process.env.SUPPRESS_NO_CONFIG_WARNING = SUPPRESS_NO_CONFIG_WARNING;

// No config? no database...
if ( config.has( 'database' ) ) {
    const mongoose = require( 'mongoose' );
    mongoose.Promise = require( 'bluebird' );

    const debugDb = config.has( 'database.debug' ) ? config.get( 'database.debug' ) : false;
    mongoose.set( 'debug', debugDb );
    const debugNamespace = 'touchto';
    const debug = require( 'debug' )(`${debugNamespace}:database`);

// Store globally the attempts to connect to the database
    global.database_connect_attempts = global.database_connect_attempts || 0;

// connection helper
    const connect = () => {
        global.database_connect_attempts += 1;
        const uri = config.get( 'database.connect' );
        const options = config.has( 'database.options' ) ? config.get( 'database.options' ) : {};

        mongoose.connect( uri, options );
    };

// If there is an error we need to know about it
    mongoose.connection.on( 'error', ( err ) => {
        console.error( err.stack );
    } );

// On mongoose disconnect, attempt to reconnect
    mongoose.connection.on( 'disconnected', ( ) => {
        if ( global.database_connect_attempts > 2 ) {
            debug( 'Database connection trouble, waiting %j seconds to try again...' );
            setTimeout( () => {
                process.nextTick( connect );
            }, 1000 * global.database_connect_attempts );
        } else {
            process.nextTick( connect );
        }
    } );

// On Connected, yeah!

    mongoose.connection.on( 'connected', ( err ) => {
        if ( err ) {
            console.error( err );
        } else {
            debug( 'Database Connected' );
        }
    } );

// Attempt connection
    connect();
}