package com.renchao;

import org.junit.Test;
import sun.net.www.http.HttpClient;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.RandomAccessFile;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.sql.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.Duration;
import java.time.Instant;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.StringJoiner;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class Test01 {
    public static void main(String[] args) throws InterruptedException {
        long l = System.nanoTime();
//        String format = String.format("%s-%s", "a", "b");
//        String format = "a" + "-" +"b";
        StringBuilder stringBuilder = new StringBuilder();
        String s = stringBuilder.append("a").append("-").append("b").toString();
        long duration = System.nanoTime() - l;
        System.out.println(duration);
        System.out.println(TimeUnit.NANOSECONDS.toMillis(duration));

        new Thread(Test01::t2).start();

        Thread.sleep(10000000);
    }

    private static void t2() {
        System.out.println("aa-t1-t2");
        t1();
    }


    private static void t1() {
        int i = 1;
        int k = i + 5;
        System.out.println(k);
        try {
            Thread.sleep(10000000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }


    @Test
    public void test02() {
        List<String> ALLOW_PYTHON_EXT = Arrays.asList("zip", "tar", "gz", "bz2");
        List<String> ALLOW_DATA_EXT = Arrays.asList("zip", "tar", "gz", "csv", "txt", "xls", "xlsx");

        String fileType = "PYTHONs";
        String fileExt = "zip";

        boolean isPython = "PYTHON".equals(fileType) && ALLOW_PYTHON_EXT.contains(fileExt);
        boolean isData = "DATA".equals(fileType) && ALLOW_DATA_EXT.contains(fileExt);
        if (!isPython && !isData) {
            System.out.println("文件类型错误");
        } else {
            System.out.println("文件类型正确====");
        }
    }

    @Test
    public void test03() throws IOException {
        String ipAddress = "8.8.8.8"; // 要查询的IP地址
        String apiKey = "YOUR_API_KEY"; // 在https://ipinfo.io/signup获取您的免费API密钥

        String apiUrl = "http://whois.pconline.com.cn/ipJson.jsp?ip=112.64.187.2&json=true";

        URL url = new URL(apiUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), StandardCharsets.UTF_8.name()));
        StringBuilder response = new StringBuilder();
        String line;

        while ((line = reader.readLine()) != null) {
            response.append(line);
        }
        reader.close();

        String jsonResponse = response.toString();
        System.out.println(jsonResponse); // 打印响应，包含地理位置等信息

        // 在这里您可以解析jsonResponse并提取所需的地理位置信息
    }


    @Test
    public void test07() {
        int numRecords = 5;
        String csvFileName = "C:\\Users\\RENCHAO\\Desktop\\temp-sss\\data.csv";
        try (OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(csvFileName, true), StandardCharsets.UTF_8)) {

            // 写入CSV文件的列名
//            writer.append("line_code,line_name,line_status,company_code,company_name,service_type,metric_value\n");
            writer.write('\uFEFF');
            // 生成随机数据并写入CSV文件
            for (int i = 1; i <= numRecords; i++) {
                String lineCode = "Line" + i;
                String lineName = "名字" + i;
                String lineStatus = "测试" + i;
                String companyCode = "Company" + i;
                String companyName = "CompanyName" + i;
                String serviceType = "T" + i;
                int metricValue = new Random().nextInt(1000); // 假设metric_value是0到999之间的整数

                writer.append(lineCode + "," + lineName + "," + lineStatus + "," + companyCode + ","
                        + companyName + "," + serviceType + "," + metricValue + "\n");
            }
            System.out.println(numRecords + " 条数据已生成并保存到 " + csvFileName + " 文件中。");
            System.out.println("系统默认编码：" + Charset.defaultCharset().displayName());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * 按照csv格式保存为文件，
     * StringJoiner按照指定分隔符拼串
     */
    @Test
    public void test08() throws IOException {
        FileWriter writer = new FileWriter("C:\\Users\\RENCHAO\\Desktop\\test\\data22.csv", true);

        StringJoiner sj1 = new StringJoiner(",");
        sj1.add("sss").add("ccc");
        writer.write(sj1 + "\n");

        StringJoiner sj2 = new StringJoiner(",");
        sj2.add("kk").add("z,zz");
        writer.write(sj2 + "\n");

        writer.close();
    }


    /**
     * 读取文件行数
     */
    @Test
    public void test11() {
        String uri = "C:\\Users\\RENCHAO\\Desktop\\test\\data.csv";
//        long l = System.currentTimeMillis();
//        try {
//            long lineCount = Files.lines(Paths.get(uri)).count();
//            System.out.println("行数：" + lineCount);
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//        System.out.println("耗时：" + (System.currentTimeMillis() - l));


        long l = System.currentTimeMillis();
        try (BufferedReader reader = new BufferedReader(new FileReader(uri))) {
            long lineCount = 0;
            while (reader.readLine() != null) {
                lineCount++;
            }
            System.out.println("行数：" + lineCount);
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("耗时：" + (System.currentTimeMillis() - l));

    }


    /**
     * 对比list直接迭代与stream的效率
     */
    @Test
    public void test13() {
        List<Map<String, Object>> list = new ArrayList<>();
        for (int i = 0; i < 100000; i++) {
            Map<String, Object> map = new HashMap<>();
            map.put("id", i);
            map.put("group", "aa");
            map.put("name", "aa" + i * 2);
            list.add(map);
        }

        for (int i = 100000; i < 200000; i++) {
            Map<String, Object> map = new HashMap<>();
            map.put("id", i);
            map.put("group", "bb");
            map.put("name", "bb" + i * 2);
            list.add(map);
        }

        long l = System.currentTimeMillis();
        Map<String, List<Map<String, Object>>> group = list.stream().collect(Collectors.groupingBy(m -> m.get("group").toString()));
        System.out.println("耗时：" + (System.currentTimeMillis() - l));
        Set<String> strings = group.keySet();
        System.out.println(strings);

        for (String s : strings) {
            System.out.println(group.get(s).size());
        }
    }

    /**
     * 读取大文件最后一行
     */
    @Test
    public void test15() throws IOException {
        String path = "C:\\Users\\RENCHAO\\Desktop\\test\\data.csv";
//        RandomAccessFile file = new RandomAccessFile(path, "r");
//        file.seek(file.length() - 2);
//        String theLastLine = file.readLine();
//        System.out.println(theLastLine);
        long l = System.currentTimeMillis();
        System.out.println(readLastLine2(path));
        System.out.println("耗时：" + (System.currentTimeMillis() - l));
        System.out.println(Integer.parseInt("77"));
    }

    public static String readLastLine(String filePath) throws IOException {
        try (RandomAccessFile file = new RandomAccessFile(filePath, "r")) {
            StringBuilder lastLine = new StringBuilder();
            for (long pointer = file.length() - 1; pointer >= 0; pointer--) {
                file.seek(pointer);

                int currentByte = file.read();
                if (currentByte == '\n' || currentByte == '\r') {
                    // Found the end of the last line
                    break;
                }

                lastLine.insert(0, (char) currentByte);
            }

            return lastLine.toString();
        }
    }

    public static String readLastLine2(String filePath) throws IOException {
        try (RandomAccessFile file = new RandomAccessFile(filePath, "r")) {
            for (long pointer = file.length() - 1; pointer >= 0; pointer--) {
                file.seek(pointer);
                int currentByte = file.read();
                if (currentByte == '\n' || currentByte == '\r') {
                    break;
                }
            }
            return file.readLine();
        }
    }


    /**
     * 文件压缩
     */
    private void compression(File file) throws IOException {
        FileOutputStream outputStream = new FileOutputStream(file.toString().replace("csv", "zip"));
        ZipOutputStream zipOut = new ZipOutputStream(outputStream);
        zipOut.putNextEntry(new ZipEntry(file.getName()));
        FileInputStream inputStream = new FileInputStream(file);
        byte[] bytes = new byte[1024];
        int length;
        while ((length = inputStream.read(bytes)) >= 0) {
            zipOut.write(bytes, 0, length);
        }
        inputStream.close();
        zipOut.close();
        outputStream.close();

    }


    /**
     * 遍历目录，获取所有文件列表
     */
    private void getFileList(File dir, List<File> fileList) {
        if (!dir.exists()) {
            return;
        }
        File[] files = dir.listFiles();
        if (files == null) {
            return;
        }
        for (File file : files) {
            if (file.isDirectory()) {
                getFileList(file, fileList);
            } else {
                fileList.add(file);
            }
        }
    }


    @Test
    public void test16() {


    }


}