var passCount = 0;
var failCount = 0;
var testCount = 0;

$(function()
{
	// First, wireup!
	$('.results').on('click', 'td.rvl', function()
	{
		var tr = $(this).closest('tr');
		if (tr.hasClass('collapsed'))
		{
			$('.revealer', tr).hide();
			$('.hidden', tr).show();
			$(this).html("-");
		}
		else
		{
			$('.revealer', tr).show();
			$('.hidden', tr).hide();
			$(this).html("+");
		}
		tr.toggleClass('collapsed expanded');
	});

	$('.expand-all').click(function()
	{
		var $testGroup = $(this).closest('.test-group');
		$('.collapsed .rvl', $testGroup).click();
	});

	$('.collapse-all').click(function()
	{
		var $testGroup = $(this).closest('.test-group');
		$('.expanded .rvl', $testGroup).click();
	});


	// Next, run tests and render results!
	runParseTests();
	runUnparseTests();


	// Finally, show the overall status.
	if (failCount == 0)
		$('#status').addClass('status-pass').html("All <b>"+passCount+"</b> test"+(passCount == 1 ? "" : "s")+" passed");
	else
		$('#status').addClass('status-fail').html("<b>"+failCount+"</b> test"+(failCount == 1 ? "" : "s")+" failed; <b>"+passCount+"</b> passed");
});




// Executes all tests in PARSE_TESTS from test-cases.js
// and renders results in the table.
function runParseTests()
{
	for (var i = 0; i < PARSE_TESTS.length; i++)
	{
		var test = PARSE_TESTS[i];
		var passed = runTest(test);
		if (passed)
			passCount++;
		else
			failCount++;
	}


	function runTest(test)
	{
		var actual;

		try
		{
			actual = Papa.parse(test.input, test.config);
		}
		catch (e)
		{
			actual.data = [];
			actual.errors = [e];
		}

		var testId = testCount++;
		var results = compare(actual.data, actual.errors, test.expected);

		var testDescription = (test.description || "");
		if (testDescription.length > 0)
			testDescription += '<br>';
		if (test.notes)
			testDescription += '<span class="notes">' + test.notes + '</span>';

		var tr = '<tr class="collapsed" id="test-'+testId+'">'
				+ '<td class="rvl">+</td>'
				+ '<td>' + testDescription + '</td>'
				+ passOrFailTd(results.data)
				+ passOrFailTd(results.errors)
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">' + JSON.stringify(test.config, null, 2) + '</div></td>'
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">' + revealChars(test.input) + '</div></td>'
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">data: ' + JSON.stringify(test.expected.data, null, 4) + '\r\nerrors: ' + JSON.stringify(test.expected.errors, null, 4) + '</div></td>'
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">data: ' + JSON.stringify(actual.data, null, 4) + '\r\nerrors: ' + JSON.stringify(actual.errors, null, 4) + '</div></td>'
			   + '</tr>';

		$('#tests-for-parse .results').append(tr);

		if (!results.data.passed || !results.errors.passed)
			$('#test-'+testId+' td.rvl').click();

		return results.data.passed && results.errors.passed
	}


	function compare(actualData, actualErrors, expected)
	{
		var data = compareData(actualData, expected.data);
		var errors = compareErrors(actualErrors, expected.errors);
		
		return {
			data: data,
			errors: errors
		}


		function compareData(actual, expected)
		{
			var passed = true;

			if (actual.length != expected.length)
				passed = false;

			for (var row = 0; row < expected.length; row++)
			{
				if (actual[row].length != expected[row].length)
				{
					passed = false;
					break;
				}

				for (var col = 0; col < expected[row].length; col++)
				{
					var expectedVal = expected[row][col];
					var actualVal = actual[row][col];

					if (actualVal !== expectedVal)
					{
						passed = false;
						break;
					}
				}
			}

			// We pass back an object right now, even though it only contains
			// one value, because we might add details to the test results later
			// (same with compareErrors below)
			return {
				passed: passed
			};
		}


		function compareErrors(actual, expected)
		{
			var passed = JSON.stringify(actual) == JSON.stringify(expected);

			return {
				passed: passed
			};
		}
	}
}






// Executes all tests in UNPARSE_TESTS from test-cases.js
// and renders results in the table.
function runUnparseTests()
{
	for (var i = 0; i < UNPARSE_TESTS.length; i++)
	{
		var test = UNPARSE_TESTS[i];
		var passed = runTest(test);
		if (passed)
			passCount++;
		else
			failCount++;
	}

	function runTest(test)
	{
		var actual;

		try
		{
			actual = Papa.unparse(test.input, test.config);
		}
		catch (e)
		{
			actual = e;
		}

		var testId = testCount++;
		var results = compare(actual, test.expected);

		var testDescription = (test.description || "");
		if (testDescription.length > 0)
			testDescription += '<br>';
		if (test.notes)
			testDescription += '<span class="notes">' + test.notes + '</span>';

		var tr = '<tr class="collapsed" id="test-'+testId+'">'
				+ '<td class="rvl">+</td>'
				+ '<td>' + testDescription + '</td>'
				+ passOrFailTd(results)
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">' + JSON.stringify(test.config, null, 2) + '</div></td>'
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">' + JSON.stringify(test.input, null, 4) + '</div></td>'
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">' + revealChars(test.expected) + '</div></td>'
				+ '<td class="revealable pre"><div class="revealer">condensed</div><div class="hidden">' + revealChars(actual) + '</div></td>'
			   + '</tr>';

		$('#tests-for-unparse .results').append(tr);

		if (!results.passed)
			$('#test-'+testId+' td.rvl').click();

		return results.passed;
	}


	function compare(actual, expected)
	{
		return {
			passed: actual === expected
		};
	}
}












// Makes a TD tag with OK or FAIL depending on test result
function passOrFailTd(result)
{
	if (result.passed)
		return '<td class="ok">OK</td>';
	else
		return '<td class="fail">FAIL</td>';
}


// Reveals some hidden, whitespace, or invisible characters
function revealChars(txt)
{
	// Make spaces and tabs more obvious when glancing
	txt = txt.replace(/( |\t)/ig, '<span class="whitespace-char">$1</span>');
	txt = txt.replace(/(\r\n|\n\r|\r|\n)/ig, '<span class="whitespace-char special-char">$1</span>$1');

	// Make UNIT_SEP and RECORD_SEP characters visible
	txt = txt.replace(/(\u001e|\u001f)/ig, '<span class="special-char">$1</span>$1');

	// Now make the whitespace and invisible characters
	// within the spans actually appear on the page
	txt = txt.replace(/">\r\n<\/span>/ig, '">\\r\\n</span>');
	txt = txt.replace(/">\n\r<\/span>/ig, '">\\n\\r</span>');
	txt = txt.replace(/">\r<\/span>/ig, '">\\r</span>');
	txt = txt.replace(/">\n<\/span>/ig, '">\\n</span>');
	txt = txt.replace(/">\u001e<\/span>/ig, '">\\u001e</span>');
	txt = txt.replace(/">\u001f<\/span>/ig, '">\\u001f</span>');

	return txt;
}