Java/w11/datacollect/view/ConsoleView.java

package com.example.datacollect.view;

import com.example.datacollect.model.Article;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;
import java.util.Scanner;

public class ConsoleView {
    private static final Logger logger = LoggerFactory.getLogger(ConsoleView.class);
    private static final String ANSI_RESET = "\u001B[0m";
    private static final String ANSI_GREEN = "\u001B[32m";
    private static final String ANSI_RED = "\u001B[31m";
    private static final String ANSI_BLUE = "\u001B[34m";

    private final Scanner scanner = new Scanner(System.in);

    public String readLine() {
        System.out.print("> ");
        String input = scanner.nextLine();
        logger.debug("User input: {}", input);
        return input;
    }

    public void printSuccess(String msg) {
        logger.info(msg);
        System.out.println(ANSI_GREEN + msg + ANSI_RESET);
    }

    public void printError(String msg) {
        logger.error(msg);
        System.out.println(ANSI_RED + msg + ANSI_RESET);
    }

    public void printInfo(String msg) {
        logger.info(msg);
        System.out.println(ANSI_BLUE + msg + ANSI_RESET);
    }

    public void display(List<Article> articles) {
        logger.debug("Displaying {} articles", articles.size());
        if (articles.isEmpty()) {
            String emptyMsg = "暂无文章，请先执行 crawl。";
            logger.info(emptyMsg);
            printInfo(emptyMsg);
            return;
        }
        for (int i = 0; i < articles.size(); i++) {
            Article a = articles.get(i);
            String articleStr = (i + 1) + ". " + a.getTitle() + " | " + a.getUrl();
            System.out.println(articleStr);
            logger.debug(articleStr);
        }
    }
}