import cn.hutool.core.date.DateUtil;
import exceptions.FileAnalyseException;
import exceptions.NotExistFileException;
import utils.CalculationUtils;
import utils.CommonUtils;
import java.util.Map;

public class Main {
    //合法参数个数为3
    static final int ARGS_NUM = 3;
    public static void main(String[] args){
        // 读取并解析参数
        if (args.length != ARGS_NUM) {
            throw new IllegalArgumentException("参数个数不正确");
        }
        // 解析文件,处理分词
        Map<String, Integer> originWordCount = null;
        Map<String, Integer> compareWordCount = null;
        try {
            //得到原文本的关键词和词频
            originWordCount = CommonUtils.analyseText(CommonUtils.readFileToStr(args[0]));
            //以及比对文本的关键词的关键词和词频
            compareWordCount = CommonUtils.analyseText(CommonUtils.readFileToStr(args[1]));
        } catch (FileAnalyseException | NotExistFileException e) {
            e.printStackTrace();
        }
        // 获取simHash值
        String simHash1 = CalculationUtils.calculateSimHash(originWordCount);
        String simHash2 = CalculationUtils.calculateSimHash(compareWordCount);
        //计算相似度,保留两位小数
        double result = CalculationUtils.getSimilarity(simHash1, simHash2);
        String format = String.format("相似度为：%.2f", result);
        System.out.println(format);
        String writeFileContent = "---------------------------------------" + "\n" +
                "原文件：" + args[0] + "\n" +
                "对比文件：" + args[1] + "\n" +
                format + "\n" +
                "比较时间为：" + DateUtil.now() + "\n";
        ;
        CommonUtils.writeFile(args[2],writeFileContent);
    }
}