package com.example.datacollect.command;

import com.example.datacollect.model.Article;
import com.example.datacollect.repository.ArticleRepository;
import com.example.datacollect.strategy.CrawlStrategy;
import com.example.datacollect.strategy.StrategyFactory;
import com.example.datacollect.view.ConsoleView;
import com.example.datacollect.command.Command;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import java.util.List;

public class AnalyzeCommand implements Command {
    private final ConsoleView view;
    private final StrategyFactory strategyFactory;

    
    public AnalyzeCommand(ConsoleView view, StrategyFactory strategyFactory) {
        this.view = view;
        this.strategyFactory = strategyFactory;
    }

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

    @Override
    public void execute(String[] args, ArticleRepository repository) {
        if (args.length < 2) {
            view.printError("Usage:analyze <url>");
            return;
        }
        String url = args[1];

        try {
            CrawlStrategy strategy = strategyFactory.getStrategy(url);
            if (strategy == null) {
                view.printError("No strategy found for: " + url);
                return;
            }
        Document doc = Jsoup.connect(url)
                    .userAgent("Mozilla/5.0")
                    .timeout(5000)
                    .get();

            List<Article> articles = strategy.parse(doc);
       

            
            int total = articles.size();
            int totalTitleLen = 0;
            int totalContentLen = 0;

            for (Article a : articles) {
                totalTitleLen += a.getTitle() == null ? 0 : a.getTitle().length();
                totalContentLen += a.getContent() == null ? 0 : a.getContent().length();
            }
        
            
            view.printInfo("===== 分析统计结果 =====");
            view.printInfo("文章总数：" + total + " 篇");
            view.printInfo("标题总长度：" + totalTitleLen);
            view.printInfo("内容总长度：" + totalContentLen);
            if (total > 0) {
                view.printInfo("平均标题长度：" + (totalTitleLen / total));
                view.printInfo("平均内容长度：" + (totalContentLen / total));
            }
            view.printInfo("======================");
            view.printSuccess("分析完成（数据未保存）");

        } catch (Exception e) {
            view.printError("分析失败：" + e.getMessage());
        }
    }
}