package ctbrec.ui.tabs;

import ctbrec.Config;
import ctbrec.OS;
import ctbrec.docs.DocServer;
import ctbrec.ui.DesktopIntegration;
import javafx.application.Platform;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.control.Tab;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import lombok.extern.slf4j.Slf4j;

// import java.awt.Desktop;
import java.io.File;
import java.io.IOException;

@Slf4j
public class HelpTab extends Tab {

    private boolean serverStarted = false;

    public HelpTab() {
        setClosable(false);
        setText("Help");

        Button openHelp = new Button("Open Help");
        Button openLog = new Button("Open Log File");
        Button openCfg = new Button("Open config dir");
        openHelp.setPadding(new Insets(20));
        openLog.setPadding(new Insets(20));
        openCfg.setPadding(new Insets(20));
        Label logFilePathLabel = new Label("Log file: " + new File("ctbrec.log").getAbsolutePath());
        File cfgDir = Config.getInstance().getConfigDir();
        String path = (cfgDir != null) ? cfgDir.getAbsolutePath() : "Unknown";
        Label configPathLabel = new Label("Config dir: " + path);

        VBox vbox = new VBox();
        vbox.setAlignment(Pos.CENTER); // Center align the buttons
        vbox.setSpacing(20); // Set a 20 pixel gap between the buttons
        vbox.getChildren().addAll(openHelp, openCfg, configPathLabel, openLog, logFilePathLabel);
        
        BorderPane layout = new BorderPane();

        // Add the VBox to the center region of the BorderPane
        layout.setCenter(vbox);

        setContent(layout);

        openHelp.setOnAction(e -> {
            if (!serverStarted) {
                startDocumentationServer();
            } else {
                openDocumentationPage();
            }
        });

        openLog.setOnAction(e -> {
            File logFile = new File("ctbrec.log");
            if (logFile.exists()) {
                try {
                    // Use Runtime.getRuntime().exec() to open the file in a separate process
                    String osName = System.getProperty("os.name").toLowerCase();
                    ProcessBuilder pb = null;
                    if (osName.contains("mac")) {
                        pb = new ProcessBuilder("open", logFile.getAbsolutePath());
                    } else if (osName.contains("win")) {
                        pb = new ProcessBuilder("explorer.exe", logFile.getAbsolutePath());
                    } else { // Assume it's a Unix/Linux system
                        pb = new ProcessBuilder("xdg-open", logFile.getAbsolutePath());
                    }
                    pb.start();
                } catch (IOException ex) {
                    log.error("Couldn't open log file", ex);
                }
            } else {
                log.warn("Log file doesn't exist: {}", logFile.getAbsolutePath());
            }
        });

        openCfg.setOnAction(e -> {
            File configDir = Config.getInstance().getConfigDir();
            if (configDir.exists()) {
                try {
                    // Use Runtime.getRuntime().exec() to open the file in a separate process
                    String osName = System.getProperty("os.name").toLowerCase();
                    ProcessBuilder pb = null;
                    if (osName.contains("mac")) {
                        pb = new ProcessBuilder("open", configDir.getAbsolutePath());
                    } else if (osName.contains("win")) {
                        pb = new ProcessBuilder("explorer.exe", configDir.getAbsolutePath());
                    } else { // Assume it's a Unix/Linux system
                        pb = new ProcessBuilder("xdg-open", configDir.getAbsolutePath());
                    }
                    pb.start();
                } catch (IOException ex) {
                    log.error("Couldn't open config dir", ex);
                }
            } else {
                log.warn("Config dir doesn't exist: {}", configDir.getAbsolutePath());
            }
        });
    }
    
    private void startDocumentationServer() {
        new Thread(() -> {
            try {
                DocServer.start(() -> Platform.runLater(() -> {
                    serverStarted = true;
                    openDocumentationPage();
                }));
            } catch (Exception ex) {
                log.error("Couldn't start documentation server", ex);
            }
        }).start();
    }

    private void openDocumentationPage() {
        DesktopIntegration.open("http://localhost:5689/docs/index.md");
    }
}