import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

// ─────────────────────────────────────────────
// Controller
// ─────────────────────────────────────────────
class CrawlerController {
    private final ConsoleView           view;
    private final ArticleRepository     repo;
    private final Map<String, Command>  commands = new HashMap<>();
    private final List<String>          history  = new ArrayList<>();

    CrawlerController(ConsoleView view, ArticleRepository repo, StrategySelector selector) {
        this.view = view;
        this.repo = repo;

        CrawlCommand crawl = new CrawlCommand(view, repo, selector);
        reg(crawl.getName(), crawl);
        reg(crawl.getAlias(), crawl);
        reg(new ListCommand(view, repo));
        reg(new AnalyzeCommand(view, repo, selector));
        reg(new HistoryCommand(view, history));
        reg(new HelpCommand(view));
        reg(new ExitCommand(view));
    }

    private void reg(Command cmd)             { commands.put(cmd.getName(), cmd); }
    private void reg(String key, Command cmd) { commands.put(key, cmd); }

    public void handle(String input) {
        if (input == null || input.isBlank()) return;
        history.add(input);
        String[] parts = input.trim().split("\\s+");
        Command  cmd   = commands.get(parts[0].toLowerCase());
        if (cmd == null) view.printError("未知命令：" + parts[0] + "（输入 help）");
        else             cmd.execute(parts, repo.getAll());
    }
}

// ─────────────────────────────────────────────
// Main 入口
// ─────────────────────────────────────────────
public class Main {
    public static void main(String[] args) {
        ConsoleView       view     = new ConsoleView();
        ArticleRepository repo     = new ArticleRepository();
        StrategySelector  selector = new StrategySelector();
        CrawlerController ctrl     = new CrawlerController(view, repo, selector);

        view.printSuccess("Welcome to CLI Crawler W10!");
        view.printInfo("输入 help 查看命令。");

        while (true) ctrl.handle(view.readLine());
    }
}