package com.example.datacollect.controller;

import com.example.datacollect.command.*;
import com.example.datacollect.model.Article;
import com.example.datacollect.view.ConsoleView;
import java.util.*;

public class CrawlerController {
    private final Map<String, Command> commands = new HashMap<>();
    private final ConsoleView view;
    private final List<Article> articles;
    private final List<String> commandHistory = new ArrayList<>();

    public CrawlerController(ConsoleView view, List<Article> articles) {
        this.view = view;
        this.articles = articles;
        register(new HelpCommand(view));
        register(new ListCommand(view));
        register(new CrawlCommand(view));
        register(new ExitCommand(view));
        register(new HistoryCommand(view, commandHistory));
    }

    private void register(Command command) {
        commands.put(command.getName(), command);
    }

    public void handle(String input) {
        String text = input == null ? "" : input.trim();
        if (text.isEmpty()) {
            return;
        }
        commandHistory.add(text);

        String[] args = text.split("\\s+");
        String cmdName = args[0].toLowerCase();

        // 命令别名：c -> crawl
        if (cmdName.equals("c")) {
            cmdName = "crawl";
        }

        Command command = commands.get(cmdName);
        if (command == null) {
            view.printError("Unknown command: " + cmdName);
            return;
        }
        command.execute(args, articles);
    }
}