var debug = {
	overlay: null, output: null, action: null, process: null,

	initOverlay: function() {
		debug.overlay = loadFXML("dialog/overlay/debug/debug.fxml");
		
		// Lookup output
		debug.output = debug.overlay.lookup("#output");
		debug.output.setEditable(false);
		
		// Lookup copy button
		debug.copy = debug.overlay.lookup("#copy");
		debug.copy.setOnAction(function(event) {
			var content = new javafx.scene.input.ClipboardContent();
			content.putString(debug.output.getText());
			
			// Set clipboard content
			javafx.scene.input.Clipboard.getSystemClipboard().
				setContent(content);
		});
		
		/// Lookup action button
		debug.action = debug.overlay.lookup("#action");
		debug.action.setOnAction(function(event) {
			var process = debug.process;
			if(process !== null && process.isAlive()) {
				process.destroyForcibly();
				debug.updateActionButton(true);
				return;
			}
			
			// Hide overlay
			overlay.hide(0, null);
		});
	},

	resetOverlay: function() {
		debug.output.clear();
		debug.action.setText("");
		debug.action.getStyleClass().remove("kill");
		debug.action.getStyleClass().add("close");
	},

	append: function(text) {
		debug.output.appendText(text);
	},
	
	updateActionButton: function(forceClose) {
		var process = debug.process;
		var alive = !forceClose &&
			process !== null && process.isAlive();
		
		// Decide what we update to
		var text = alive ? "Убить" : "Закрыть";
		var addClass = alive ? "kill" : "close";
		var removeClass = alive ? "close" : "kill";
		
		// Update button
		debug.action.setText(text);
		debug.action.getStyleClass().remove(removeClass);
		debug.action.getStyleClass().add(addClass);
	}
};

/* Export functions */
function debugProcess(process) {
	debug.process = process;
	debug.updateActionButton(false);
	
	// Create new task
	var task = newTask(function() {
		var buffer = IOHelper.newCharBuffer();
		var reader = IOHelper.newReader(process.getInputStream(),
			java.nio.charset.Charset.defaultCharset());
		for(var length = reader.read(buffer); length >= 0; length = reader.read(buffer)) {
			task.updateMessage(new java.lang.String(buffer, 0, length));
		}
		
		// So we wait for exit code
		return process.waitFor();
	});
	task.messageProperty()["addListener(javafx.beans.value.ChangeListener)"](
		function(o, ov, nv) debug.append(nv) // Anyone knows how to handle it better?
	);
	
	// Set completion handlers
	task.setOnFailed(function(event) {
		debug.updateActionButton(true);
		debug.append(java.lang.System.lineSeparator() + task.getException());
	});
	task.setOnSucceeded(function(event) {
		debug.updateActionButton(false);
		debug.append(java.lang.System.lineSeparator() + "Exit code " + task.getValue());
	});
	
	// Gogogo
	startTask(task);
}