import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

import java.util.*;

public class CookieDiff {

public static void main(String[] args) {

if (args.length != 2) {

System.out.println("Usage: java CookieDiff <file1.txt> <file2.txt>");

return;

}

String file1 = args[0];

String file2 = args[1];

Map<String, String> cookies1 = loadCookies(file1);

Map<String, String> cookies2 = loadCookies(file2);

System.out.println("Differences between " + file1 + " and " + file2 + ":");

// Find cookies present in file1 but not in file2

Map<String, String> diff1 = findDiff(cookies1, cookies2);

if (!diff1.isEmpty()) {

System.out.println("Cookies only in " + file1 + ":");

for (Map.Entry<String, String> entry : diff1.entrySet()) {

System.out.println(entry.getKey() + "=" + entry.getValue());

}

}

// Find cookies present in file2 but not in file1

Map<String, String> diff2 = findDiff(cookies2, cookies1);

if (!diff2.isEmpty()) {

System.out.println("Cookies only in " + file2 + ":");

for (Map.Entry<String, String> entry : diff2.entrySet()) {

System.out.println(entry.getKey() + "=" + entry.getValue());

}

}

}

private static Map<String, String> loadCookies(String filename) {

Map<String, String> cookies = new HashMap<>();

try (BufferedReader reader = new BufferedReader(new FileReader(filename))) {

String line;

while ((line = reader.readLine()) != null) {

String[] parts = line.split("=");

if (parts.length == 2) {

cookies.put(parts[0].trim(), parts[1].trim());

}

}

} catch (IOException e) {

System.err.println("Error reading file: " + filename);

return new HashMap<>(); // Return empty map in case of error

}

return cookies;

}

private static Map<String, String> findDiff(Map<String, String> map1, Map<String, String> map2) {

Map<String, String> diff = new HashMap<>();

for (Map.Entry<String, String> entry : map1.entrySet()) {

if (!map2.containsKey(entry.getKey()) || !entry.getValue().equals(map2.get(entry.getKey()))) {

diff.put(entry.getKey(), entry.getValue());

}

}

return diff;

}

}