Java/W9/view/ConsoleView.java

package com.example.datacollect.view;

import com.example.datacollect.model.Article;
import com.example.datacollect.model.DataService;
import java.util.List;
import java.util.Scanner;

public class ConsoleView {
    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("> ");
        return scanner.nextLine();
    }

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

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

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

    public void display(List<Article> articles,int totalSize) {
        ConsoleView view=new ConsoleView();
        if (articles.isEmpty()) {
            view.printInfo("暂无文章，请先执行 crawl。");
            return;
        }
        // 计算分页信息
        String paginationInfo = "";
        if (totalSize > articles.size()) {
            paginationInfo = " (显示前 " + articles.size() + " 条，共 " + totalSize + " 条)";
        }
        view.printInfo("文章列表" + paginationInfo);
        System.out.println("--------------------------------------------------");
        for (int i = 0; i < articles.size(); i++) {
            Article a = articles.get(i);
            System.out.println((i + 1) + ". " + a.getTitle() + " | " + a.getUrl());
        }
    }
    // 在 ConsoleView 类中添加
    public void displayHistory(List<String> history) {
        if (history.isEmpty()) {
            printInfo("暂无命令历史。");
            return;
        }
        printInfo("命令历史 (共 " + history.size() + " 条):");
        System.out.println("--------------------------------------------------");

        // 倒序显示，最新的在上面
        for (int i = history.size() - 1; i >= 0; i--) {
            System.out.println((i + 1) + ". " + history.get(i));
        }
        System.out.println("--------------------------------------------------");
    }
}