function getEOL(document: ITextDocument): string {
	let text = document.getText();
	if (document.lineCount > 1) {
		let to = document.offsetAt(Position.create(1, 0));
		let from = to;
		while (from > 0 && isEOL(text, from - 1)) {
			from--;
		}
		return text.substr(from, to - from);
	}
	return '\n';
}

function validateTextDocument(textDocument: ITextDocument): void {
	let linterBinPath = path.join(__dirname, '../../server/glualint');
	connection.console.log("lel");
	connection.console.log(linterBinPath);
	
	let stdout = childProcess.execFileSync(linterBinPath, ['stdin'], {input: textDocument.getText()});
	
	let diagnostics: Diagnostic[] = [];

	let lines = stdout.toString().split('\n');	
	for (let i = 0; i < lines.length; i++) {
		let m = errorRegex.exec(lines[i]);
		
		if (m != null) {
			var severity = DiagnosticSeverity.Error;
			if (m[1] == 'Warning') {
				severity = DiagnosticSeverity.Warning;
			}
			
			diagnostics.push({
				severity: severity,
				range: {
					start: { line: parseInt(m[2]) - 1, character: parseInt(m[3]) - 1},
					end: { line: parseInt(m[2]) - 1, character: parseInt(m[3]) - 1 + 3 }
				},
				message: m[4],
				source: 'glualint'
			});
		}
	}
	
	// Send the computed diagnostics to VSCode.
	connection.sendDiagnostics({ uri: textDocument.uri, diagnostics });
}

	function getOutline(value: string): Promise<SymbolInformation[]> {
		var uri = 'test://test.json';

		var symbolProvider = new JSONDocumentSymbols();

		var document = ITextDocument.create(uri, value);
		var jsonDoc = Parser.parse(value);
		return symbolProvider.compute(document, jsonDoc);
	}

	function format(unformatted: string, expected: string, insertSpaces = true) {
		let range: Range = null;
		let uri = 'test://test.json';

		let rangeStart = unformatted.indexOf('|');
		let rangeEnd = unformatted.lastIndexOf('|');
		if (rangeStart !== -1 && rangeEnd !== -1) {
			// remove '|'
			var unformattedDoc = ITextDocument.create(uri, unformatted);
			unformatted = unformatted.substring(0, rangeStart) + unformatted.substring(rangeStart + 1, rangeEnd) + unformatted.substring(rangeEnd + 1);
			let startPos = unformattedDoc.positionAt(rangeStart);
			let endPos = unformattedDoc.positionAt(rangeEnd);
			range = Range.create(startPos, endPos);
		}

		var document = ITextDocument.create(uri, unformatted);
		let edits = Formatter.format(document, range, { tabSize: 2, insertSpaces: insertSpaces });
		let formatted  = applyEdits(document, edits);
		assert.equal(formatted, expected);
	}

function makeDiagnostic(document: ITextDocument, message: PhpcsReportMessage): Diagnostic {

	let lines = document.getText().split("\n");
	let line = message.line - 1;
	let lineString = lines[line];

	// Process diagnostic start and end columns.
	let start = message.column - 1;
	let end = message.column;
	let charCode = lineString.charCodeAt(start);
	if (cc.isWhitespace(charCode)) {
		for (var i = start + 1, len = lineString.length; i < len; i++) {
			charCode = lineString.charCodeAt(i);
			if (!cc.isWhitespace(charCode)) {
				break;
			}
			end = i;
		}
	} else if (cc.isAlphaNumeric(charCode) || cc.isSymbol(charCode)) {
		// Get the whole word
		for (var i = start + 1, len = lineString.length; i < len; i++) {
			charCode = lineString.charCodeAt(i);
			if (!cc.isAlphaNumeric(charCode) && charCode !== 95) {
				break;
			}
			end += 1;
		}
		// Move backwards
		for (var i = start, len = 0; i >  len; i--) {
			charCode = lineString.charCodeAt(i - 1);
			if (!cc.isAlphaNumeric(charCode) && !cc.isSymbol(charCode) && charCode !== 95) {
				break;
			}
			start -= 1;
		}
	}

	// Process diagnostic severity.
	let severity = DiagnosticSeverity.Error;
	if (message.type === 'WARNING') {
		severity = DiagnosticSeverity.Warning;
	}

	let diagnostic: Diagnostic = {
		range: {
			start: { line, character: start },
			end: { line, character: end }
		},
		severity,
		message: `${ message.message }`
	};

	return diagnostic;
};

	function testComputeInfo(value: string, schema: JsonSchema.IJSONSchema, position: Position): Thenable<Hover> {
		var uri = 'test://test.json';

		var schemaService = new SchemaService.JSONSchemaService(requestService);
		var hoverProvider = new JSONHover(schemaService);
		var id = "http://myschemastore/test1";
		schemaService.registerExternalSchema(id, ["*.json"], schema);

		var document = ITextDocument.create(uri, value);
		var textDocumentLocation = TextDocumentPosition.create(uri, position);
		var jsonDoc = Parser.parse(value);
		return hoverProvider.doHover(document, textDocumentLocation, jsonDoc);
	}

export function applyEdits(document: ITextDocument, edits: TextEdit[]) : string {
	let formatted = document.getText();
	let sortedEdits = edits.sort((a, b) => document.offsetAt(b.range.start) - document.offsetAt(a.range.start));
	let lastOffset = formatted.length;
	sortedEdits.forEach(e => {
		let startOffset = document.offsetAt(e.range.start);
		let endOffset = document.offsetAt(e.range.end);
		assert.ok(startOffset <= endOffset);
		assert.ok(endOffset <= lastOffset);
		formatted = formatted.substring(0, startOffset) + e.newText + formatted.substring(endOffset, formatted.length);
		lastOffset = startOffset;
	});
	return formatted;
}

	var testSuggestionsFor = function(value: string, stringAfter: string, schema: JsonSchema.IJSONSchema, test: (items: CompletionItem[], document: ITextDocument) => void) : Thenable<void> {
		var uri = 'test://test.json';
		var idx = stringAfter ? value.indexOf(stringAfter) : 0;

		var schemaService = new SchemaService.JSONSchemaService(requestService);
		var completionProvider = new JSONCompletion(schemaService, console);
		if (schema) {
			var id = "http://myschemastore/test1";
			schemaService.registerExternalSchema(id, ["*.json"], schema);
		}

		var document = ITextDocument.create(uri, value);
		var textDocumentLocation = TextDocumentPosition.create(uri, Position.create(0, idx));
		var jsonDoc = Parser.parse(value);
		return completionProvider.doSuggest(document, textDocumentLocation, jsonDoc).then(list => list.items).then(completions => {
			test(completions, document);
			return null;
		})
	};

function validateTextDocument(textDocument: ITextDocument): void {
	let diagnostics: Diagnostic[] = [];
	let lines = textDocument.getText().split(/\r?\n/g);
	let problems = 0;
	for (var i = 0; i < lines.length && problems < maxNumberOfProblems; i++) {
		let line = lines[i];
		let index = line.indexOf('typescript');
		if (index >= 0) {
			problems++;
			diagnostics.push({
				severity: DiagnosticSeverity.Warning,
				range: {
					start: { line: i, character: index},
					end: { line: i, character: index + 10 }
				},
				message: `${line.substr(index, 10)} should be spelled TypeScript`
			});
		}
	}
	// Send the computed diagnostics to VSCode.
	connection.sendDiagnostics({ uri: textDocument.uri, diagnostics });
}

	sortedEdits.forEach(e => {
		let startOffset = document.offsetAt(e.range.start);
		let endOffset = document.offsetAt(e.range.end);
		assert.ok(startOffset <= endOffset);
		assert.ok(endOffset <= lastOffset);
		formatted = formatted.substring(0, startOffset) + e.newText + formatted.substring(endOffset, formatted.length);
		lastOffset = startOffset;
	});