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<html lang="en">
<head>
    <title>Group 7 - Deckcode to JavaScript</title>
    <link rel="stylesheet" type="text/css" href="styleforcompiler.css">
</head>
<body>
    <center><h1>Group 7 - Deckcode to JavaScript</h1></center>
    <center><p>Input your deckode below:</p></center>
    <center><p><textarea id="myTextarea" rows="30" cols="50">Enter your deckcode here...</textarea>
    <textarea id="myTextarea" rows="30" cols="50"></textarea></p></center>
    <center><button type="button" onclick="myFunction()">Translate</button></center>
    <center><p id="demo"></p></center>
    <script>

	var Output = "";

	var ARRAY_COMMANDS = ["deck", "movetop", "moveall"];
	var ARRAY_OPERATIONS = ["less," "greater", "equal"];

	//var testDeck1 = ["A", "B", "C"];
	//var testDeck2 = ["d", "e", "f"];
	//var td1 = "in";
	//var td2 = "temp";

	function myFunction()
	{
		var completedArray = getWords();
		document.getElementById("demo").innerHTML = Output;

	}

	function getWords()
	{
		var bufferedString = [];
		var r = [];
		var textAreaValue = document.getElementById("myTextarea").value;
		for (i = 0, len = textAreaValue.length; i <= len; i++)
		{
			if (textAreaValue[i] == " " || textAreaValue[i] == undefined)
			{
				var completedString = bufferedString.join("");
				r.push(completedString);
				// Clear bufferedString
				bufferedString = [];
			}
			else
			{
				bufferedString.push(textAreaValue[i]);
			}
		}
		return r;
	}

	// Handles deck command
	function deck(pvar1, Ivar2)
	{
		if (pvar1 == undefined)
		{
			//error_flag = 1;
			error(1);
		}
		else if (typeof Ivar2 != "2" && Ivar2 != undefined)
		{
			//error_flag = 2;
			error(2);
		}
		else
		{
			if (Ivar2 == undefined)
			{
				// Input was "deck in"
				var returnArray = [];
				Output += ("var " + pvar1 + " = [];\n");
			}
			else
			{
				// (deck in: 1, 2, 3, 4, 5
				var returnArray = Ivar2;
				Output += ("var " + pvar1 + " = [" + Ivar2 + "];\n");
			}
		}
	}

	// Handles movetop command
	// Deckcode: movetop in, temp
	function movetop(Ivar1, Ovar2)
	{
		if (Ivar1 == undefined || Ovar2 == undefined)
		{
			//error_flag = 3;
			error(3);
		}
		// TODO: Add check to make sure parameters are in fact arrays
		else
		{

			Ovar2.unshift(Ivar1.shift());

			Output += (Ovar2 + ".unshift(" + Ivar1 + ".shift());");
		}
	}

	// Handles moveall command
	function moveall(Ivar1, Ovar2)
	{
		if (Ivar1 == undefined || Ovar2 == undefined)
		{
			//error_flag = 3;
			error(3);
		}
		// TODO: Add check to make sure parameters are in fact arrays
		else if (Ivar1.length == 0)
		{
			//error_flag = 5;
			error(5);
		}
		else
		{
			// I could have used Ovar2.concat(Ivar1), but it doesn't empty Ivar1, only copies it and concatenates to Ovar2
			// Plus stackoverflow told be this is apparently the fastest way to do it so who am I to argue
			/*
			while (Ivar1.length > 0)
			{
				Ovar2.push(Ivar1.pop());
			}
			*/
			Output += ("while (" + Ivar1 + ".length > 0) { " + Ovar2 + ".push(" + Ivar1 + ".pop()); } ");
		}
	}

	function error(I_error_flag)
	{
		if (I_error_flag == 1)
		{
			console.log("Error 1: Deck initialization does not contain a name input");
		}
		else if (I_error_flag == 2)
		{
			console.log("Error 2: Deck initialization contains an invalid data input");
		}
		else if (I_error_flag == 3)
		{
			console.log("Error 3: Invalid function invocation--check if initial and destination decks are arrays");
		}
		else if (I_error_flag == 4)
		{
			console.log("Error 4: Type mismatch--decks should be arrays, but one or both are not");
		}
		else if (I_error_flag == 5)
		{
			console.log("Error 5: Empty initial array--is there an empty deck where there shouldn't be?");
		}
	}
    </script>
</script>
</body>
</html>