Create APIs

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	<scriptACL>
		<execute>nobody</execute>
		<read>nobody</read>
		<write>nobody</write>
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	<code>
		<![CDATA[
		    /*
		     * This API builds the board of a card matching memory game. It returns an array 
		     * of shuffled image name pairs. The size of the board is determined by the "level" 
		     * parameter that is retrieved from the HTTP request. The type of images to use 
		     * (fruits or animals) is also retrieved from the "type" request parameter.
		     */		    
		    var level = request.parameters["level"] || "average"; // retrieve the "level" parameter from the request
		    var type = request.parameters["type"] || "fruits"; // retrieve the "type" parameter from the request
		    return buildGameBoard(level, type);
		    
	        function buildGameBoard(gameLevel, imageType) {    
                var fruits = ["peach", "apricot", "apple", "watermelon", "grapes", "banana", "kiwi", "lemon", "orange", "cherry", "mango", "litchi", "pineapple"];		    
                var animals = ["lion", "zebra", "monkey", "elephant", "giraffe", "tiger", "crocodile", "antelope", "buffalo", "ostrich", "lemur"];
                var levelMap = {
                    "easy": 16,
                    "average": 20,
                    "difficult": 24
                  };        
                var images = imageType == "fruits" ? fruits : animals;
                var pos = 0;
                var cell = {};
                var gameBoard = [];
                var availableLocations = resetAvailableLocations(levelMap[gameLevel]);
                var cell = {};
                var image = "";
                var pos1 = 0;
                var pos2 = 0;
                for (var i = 0; i < levelMap[gameLevel] / 2; i++) {                
                    var index = Math.floor(Math.random() * images.length);
                    image = images[index];
                    var result = getAvailableLocation(availableLocations);
                    availableLocations.splice(result.index, 1);
                    gameBoard[result.location] = image;
                    result = getAvailableLocation(availableLocations);
                    availableLocations.splice(result.index, 1);
                    gameBoard[result.location] = image;
                }            
              return gameBoard;
            }
        
            function resetAvailableLocations(length) {              
              var locations = [];
              for (var i = 0; i < length; i++) {
                locations.push(i);
              }              
              return locations;
            }
        
            function getAvailableLocation(availableLocations) {            
              var index = Math.floor(Math.random() * availableLocations.length);
              return {"index": index, "location" :availableLocations[index]};
            }
		    
		]]>
	</code>
</script>