package design.controller.userinput.menus;

import design.controller.userinput.Menu;
import design.controller.userinput.MenuOption;
import design.persistence.JSONPersonalDatabase;
import design.persistence.XMLParser;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

public class ImportExportMenu extends Menu {
    XMLParser xmlParser = new XMLParser();

    private static final Map<String, Map<Boolean, DataHandler>> handlers = Map.of(
    "json", Map.of(
        true, new PersonalJsonHandler(),
        false, new LeagueJsonHandler()
    ),
    "csv", Map.of(
        true, new PersonalCsvHandler(),
        false, new LeagueCsvHandler()
    ));

    
    @Override
    public String getTitle() {
        return "import export menu";
    }

   @Override
    public List<MenuOption> getMenuOptions() {
        List<MenuOption> opts = new java.util.ArrayList<>();


        opts.add(new MenuOption("return to main menu", () -> new MainMenu().present()));

        opts.add(new MenuOption("import league...", () -> promptForPath(true, false)));
        opts.add(new MenuOption("export league...", () -> promptForPath(false, false)));
        opts.add(new MenuOption("import personal profile...", () -> promptForPath(true, true)));
        opts.add(new MenuOption("export personal profile...", () -> promptForPath(false, true)));

        return opts;
    }

    private void promptForPath(boolean isImporting, boolean isPersonalProfile)
    {
        System.out.println("Enter file path: ");
        Scanner sc = new Scanner(System.in);
        String path = sc.nextLine();
        File file = new File(path);

        String ext = getExtension(path);
        Map<Boolean, DataHandler> map = handlers.get(ext);
        if (map == null) {
            System.out.println("Unsupported file type: " + ext);
            return;
        }

        DataHandler handler = map.get(isPersonalProfile);
        if (handler == null) {
            System.out.println("No handler for this profile type.");
            return;
        }

        try {
            if (isImporting)
                handler.importData(file);
            else
                handler.exportData(file);
        } catch (IOException e) {
            System.err.println("I/O error: " + e.getMessage());
        }
    }

    private static String getExtension(String fileName) {
        int i = fileName.lastIndexOf('.');
        return (i >= 0) ? fileName.substring(i + 1).toLowerCase() : "";
    }
}