java/project/command/StatCommand.java

package com.example.moviecli.command;

import com.example.moviecli.repository.MovieRepository;
import com.example.moviecli.view.ConsoleView;
import java.util.Map;
import java.util.stream.Collectors;
import com.example.moviecli.model.Movie;
public class StatCommand implements Command {
    private final ConsoleView view;

    public StatCommand(ConsoleView view) {
        this.view = view;
    }

    @Override
    public String getName() {
        return "stat";
    }

    @Override
    public void execute(String[] args, MovieRepository repository) {
        var movies = repository.getAll();
        if (movies.isEmpty()) {
            view.printInfo("无数据，请先 crawl。");
            return;
        }
        Map<String, Long> scoreCount = movies.stream()
                .collect(Collectors.groupingBy(Movie::getScore, Collectors.counting()));
        view.printInfo("评分分布：");
        scoreCount.forEach((score, count) -> 
            System.out.println(score + " 分 -> " + count + " 条"));
    }
}