package OurApplication;

import graph.VertexMarking;
import graph.EdgeMarking;
import graph.DirectedGraph;
import graph.ExampleGraphs;
import graph.MarkedVertex;
import graph.MarkedEdge;
import graph.EdgeWeightMarking;
import visualisation.ParameterArea;

import javax.swing.JButton;
import javax.swing.JRadioButton;
import javax.swing.ButtonGroup;
import javax.swing.JTextField;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.BorderFactory;
import javax.swing.JOptionPane;
import java.awt.GridLayout;
import java.awt.Dimension;
import java.awt.Color;
import java.util.Objects;

/**
 * This class extends visualisation.ParameterArea and provides an example for using it.
 * It includes functionality for managing a graph selection and creation based on user input.
 *
 * @see ParameterArea
 */
public class OurParameterArea extends ParameterArea {

	private static final long serialVersionUID = 1L;

	// Custom graph instance
	private DirectedGraph<VertexMarking, EdgeMarking> customGraph;

	// Radio buttons for selecting examples or custom graph
	private JRadioButton button1;
	private JRadioButton button2;
	private JRadioButton button3;
	private JRadioButton button4;
	private JRadioButton button5;

	// Button to add a custom graph
	private JButton buttonAddGraph;

	// Text fields for inputting vertex and edge data
	private JTextField textField1;
	private JTextField textField2;

	// Selected example identifier
	private int selectedExample;

	/** TextField containing maximum sum up value. */
	protected JTextField maxValue;

	/**
	 * Standard constructor.
	 * Creates SumUpParameterArea with an empty JTextField.
	 */
	public OurParameterArea() {
		super();
		selectedExample = 1; // Default to example 1
		this.customGraph = new DirectedGraph<>();

		setBorder(BorderFactory.createTitledBorder("ParameterArea"));

		// Set layout manager to arrange buttons vertically
		setLayout(new GridLayout(4, 1, 5, 5)); // 4 rows, 1 column, 5 pixel gap

		// Create radio buttons
		button1 = new JRadioButton("Beispiel 1", true);
		button2 = new JRadioButton("Beispiel 2");
		button3 = new JRadioButton("Beispiel 3");
		button4 = new JRadioButton("Beispiel 4");
		button5 = new JRadioButton("Eigener Graph");

		// Button to add a graph
		buttonAddGraph = new JButton("Graph einfügen");

		// Input text fields
		textField1 = new JTextField("A-100-100;Ende-200-200;Start-100-200;D-200-100");
		textField2 = new JTextField("A-Ende-15;Start-D-10;D-A-3");
		textField1.setPreferredSize(new Dimension(button5.getWidth(), button5.getHeight()));
		textField2.setPreferredSize(new Dimension(button5.getWidth(), button5.getHeight()));

		// Button group to ensure mutual exclusion of radio buttons
		ButtonGroup group = new ButtonGroup();
		group.add(button1);
		group.add(button2);
		group.add(button3);
		group.add(button4);
		group.add(button5);

		// Add action listeners to radio buttons
		button1.addActionListener(e -> selectedExample = 1);
		button2.addActionListener(e -> selectedExample = 2);
		button3.addActionListener(e -> selectedExample = 3);
		button4.addActionListener(e -> selectedExample = 4);
		button5.addActionListener(e -> selectedExample = 5);

		// Add action listener to add graph button
		buttonAddGraph.addActionListener(e -> {
			String input1 = textField1.getText();
			String input2 = textField2.getText();
			this.customGraph = createGraph(input1, input2);
		});

		// Add components to panel
		add(button1);
		add(button2);
		add(button3);
		add(button4);
		add(button5);
		add(buttonAddGraph);
		add(textField1);
		add(textField2);
	}

	/**
	 * Retrieves the selected graph based on the user's choice.
	 *
	 * @return The selected graph as a DirectedGraph instance.
	 */
	public DirectedGraph<VertexMarking, EdgeMarking> getSelectedGraph() {
		ExampleGraphs temp = new ExampleGraphs();
		switch (selectedExample) {
			case 2:
				return temp.example2();
			case 3:
				return temp.example3();
			case 4:
				return temp.example4();
			case 5:
				return this.customGraph;
			case 1:
			default:
				return temp.example1();
		}
	}

	/**
	 * Creates a directed graph based on input vertex and edge data.
	 *
	 * @param vertices String representation of vertices in the format "Name-X-Y;..."
	 * @param edges String representation of edges in the format "Source-Target-Weight;..."
	 * @return DirectedGraph<VertexMarking, EdgeMarking> created from the input data.
	 */
	public DirectedGraph<VertexMarking, EdgeMarking> createGraph(String vertices, String edges) {
		DirectedGraph<VertexMarking, EdgeMarking> newGraph = new DirectedGraph<>();

		try{
			String[] allVertices = vertices.split(";");
			String[] allEdges = edges.split(";");

			// Create vertices
			for (String i: allVertices) {
				String[] current = i.split("-");
				newGraph.addVertex(new MarkedVertex<>(Integer.parseInt(current[1]), Integer.parseInt(current[2]), current[0], null, Color.BLACK));
			}

			// Create edges
			if(allEdges.length != 1 || !Objects.equals(allEdges[0], "")){
				MarkedVertex<VertexMarking> start = null;
				MarkedVertex<VertexMarking> end = null;
				for (String i: allEdges) {
					String[] current = i.split("-");
					for (MarkedVertex<VertexMarking> j: newGraph.getAllVertexes()) {
						if (Objects.equals(j.getName(), current[0])) {
							start = j;
						}
						if (Objects.equals(j.getName(), current[1])) {
							end = j;
						}
					}
					newGraph.addEdge(new MarkedEdge<>(i, start, end, new EdgeWeightMarking(Integer.parseInt(current[2]))));
				}
			}
		//Fehlerbehandlung
		}catch(Throwable e){
			JFrame info = new JFrame();
			JPanel contentpane = new JPanel();
			info.setContentPane(contentpane);
			JOptionPane.showMessageDialog(
					contentpane,
					"Fehler bei der Eingabe des Graphen. Beispieleingabe für Knoten und Kanten:\n" +
							"Knoten: Name;X-Coordinate;Y-Coordinate\nKanten: StartKnoten;Endknoten;Gewichtung\n" +
							"Hinweis: ein Koten benötigt den Namen 'Start', ein anderer 'Ende'\n" +
							"(Festlegen der Start und Endknoten für die Algorithmen)",
					"Eingabefehler",
					JOptionPane.INFORMATION_MESSAGE,
					null
			);
		}


		return newGraph;
	}
}