package internal.hw.crawler;

import internal.hw.crawler.commands.*;
import internal.hw.crawler.repositories.ArticleRepository;
import internal.hw.crawler.views.ConsoleView;

public class Main {
    public static void main(String[] args) {
        ConsoleView view = new ConsoleView();
        MainController controller = new MainController(view);
        ArticleRepository repository = new ArticleRepository();

        controller.registerCommand(new ExitCommand(view));
        controller.registerCommand(new CrawlCommand(repository, view));
        controller.registerCommand(new ListCommand(repository, view));
        controller.registerCommand(new SaveCommand(repository, view));
        controller.registerCommand(new HelpCommand(controller.getCommands(), view));

        view.printSuccess("Welcome to crawler. Type `help` for a list of available commands.");
        while (true) {
            try {
                String line = view.readLine();
                // stdin 读取异常时退出
                if (line == null) {
                    controller.handleInput(new ExitCommand(view).getName());
                    break;
                }
                controller.handleInput(line);
            } catch (Exception e) {
                view.printError("Unexpected error: " + e.getMessage());
            }
        }
    }
}