init.coffee

###
## Check if database exists. If it does not exist
## create it and create all tables and indices.
## The names of the Db, tables and indices are
## specified in config.coffee
###
createDbIfNotExists: () ->
    r.connect config.rethinkdb, (err, connection) =>
        if err
            console.log "Could not open a connection to initialize the database"
            console.log err.message
            process.exit 1

        # save connection object
        @conn = connection

        # check if a database exists
        r.dbList().run @conn, (err, result) =>
            # check length of result
            if result.length == 0
                # create db
                    @createDb () =>
                        # create all tables
                        for table in config.rethinkdb.tables
                            @createTable table