/* LCore.js
 *
 * Base Javascript class for Lulu-specific functionality.
 * This file will eventually replace lulu/lulu.js.
 */

/** initialize LULU namespace **/
if (typeof(LULU) == 'undefined') {
	var LULU = {};
	var $L = LULU;
}

if ((typeof __start != 'object') || (typeof __start.getTime != 'function')) {
    var __start = new Date();
}
$L.__executionStart = __start;
$L._getExecutionTime = function ( ) {
    var end = new Date();
    return time = (end.getTime() - $L.__executionStart.getTime()) / 1000;
}

$L.reportExecutionTime = function ( ) {
    var stats = $jq('#lulu_site_query_stats');
    if (stats.length == 1) {
        stats.append($jq("<div>").text("Client load & execution: " + $L._getExecutionTime() + " seconds"));
    }
}


/*
 * provides a layer of prototypal abstraction for the instantiation of Objects
 */
$L.object = function ( o, hostObject ) {
	if ( typeof hostObject == 'undefined' ) {
		function F() {};
		F.prototype = o;
		that = new F();
	} else {
		that = hostObject;
	}
	if ( (typeof o.constructor == 'undefined') || (o.constructor == window) ) {
	    throw $L.Error("!! LCore: The 'new' keyword was not used when instantiating this object", {obj: o});
	} else {
        if ( typeof o.constructor.name == 'undefined' ) {
            var str = o.constructor.toString();
            that.typeOf = str.substring( 0, str.indexOf( "(" ) ).replace( "function ", "" ).replace( " ", "" );
        } else {
            that.typeOf = o.constructor.name;
        }
    }
	return that;
};

$L.isArray = function ( obj ) {
	return ( ( obj instanceof Array ) || ( obj.constructor.toString().indexOf("Array") > -1 ) );
};

$L.add = function( name, object ) {
	if ( typeof $L[name] != 'undefined') {
		throw $L.Error( "!! LCore: Attempted to create duplicate member '"+name+"'; dumping original and duplicate", {original: $L[name], duplicate: object} );
	} else {
		$L[name] = object;
	}
}

$L.addManager = function( name, manager ) {
	$L.add( name, manager );
};

$L.Error = function( msg, details ) {
	var err = new Error( msg );
	if ( typeof details == 'object' ) {
		for ( x in details ) {
			err[x] = details[x];
		}
	}
	return err;
};

$L.trace = function( traceKeyword, payload ) {
	if ( $L._tracer instanceof LTracer ) {
		return $L._tracer.trace( traceKeyword, payload );
	} else {
		return false;
	}
};

function LTracer ( endpoint )
{
	var obj = $L.object(this);
	
	obj.trace = function( traceKeyword, payload ) {
		if ( typeof payload == 'undefined' ) payload = {};
		if ( obj._$isGetAvailable() ) {
			obj._fire( obj._buildTrace( traceKeyword, payload ) );
			while ( obj._missed.length > 0 ) {
				var missed = obj._missed.pop();
				obj._fire( obj._buildTrace( obj._missed[0], obj._missed[1] ) );
			}
		} else {
			obj._store( traceKeyword, payload );
		}
		return obj;
	};

	obj._endpoint = endpoint;
	obj._missed = [];
	
	obj._buildTrace = function ( k, p ) {
		var data = [];
		for ( x in p ) {
			data.push( '&data['+x+']=' + p[x] );
		}
        return '?context=trace&event=' + k + data.join('');
	}
	
	obj._fire = function( trace ) {
		var url = obj._endpoint + trace;
		obj._$get( url );
	};
	
	obj._store = function( k, p ) {
		obj._missed.push( [ k, p ] );
	};
	
	obj._$get = function( url ) {
		$jq.get( url );
	};
	
	obj._$isGetAvailable = function() {
		if ( typeof $jq == 'undefined' ) {
			return false;
		} else {
			return true;
		}
	};
	
	return obj;
}