java/w9/ConsoleView.java

package com.example.datacollect.view;

import com.example.datacollect.model.Article;
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 static final String ANSI_WHITE = "\u001B[37m";
    private static final String ANSI_BG_BLACK = "\u001B[40m";

    private static final boolean DARK_THEME = true;

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

    public String readLine() {
        if (DARK_THEME) {
            System.out.print(ANSI_BG_BLACK + ANSI_WHITE + "> " + ANSI_RESET);
        } else {
            System.out.print("> ");
        }
        return scanner.nextLine();
    }

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

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

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

    public void display(List<Article> articles) {
        if (articles.isEmpty()) {
            printInfo("暂无文章，请先执行 crawl。");
            return;
        }
        for (int i = 0; i < articles.size(); i++) {
            Article a = articles.get(i);
            String output = (i + 1) + ". " + a.getTitle() + " | " + a.getUrl();
            if (a.getAuthor() != null && !a.getAuthor().isEmpty()) {
                output += " | Author: " + a.getAuthor();
            }
            if (a.getPublishDate() != null && !a.getPublishDate().isEmpty()) {
                output += " | Date: " + a.getPublishDate();
            }
            if (DARK_THEME) {
                System.out.println(ANSI_BG_BLACK + ANSI_WHITE + output + ANSI_RESET);
            } else {
                System.out.println(output);
            }
        }
    }
}