package com.inmind.student.张崇昊;

import java.io.*;
import java.net.*;
import java.util.List;
import java.util.Map;

/**
 * 日志分析服务器，负责接收客户端上报的分析结果
 */
public class LogAnalysisServer {
    private static final int PORT = 8080;

    public static void main(String[] args) {
        ServerSocket serverSocket = null;

        try {
            // 创建服务器Socket并监听端口
            serverSocket = new ServerSocket(PORT);
            System.out.println("服务器已启动，监听端口 " + PORT + " ...");

            while (true) { // 循环接受客户端连接
                Socket clientSocket = serverSocket.accept();
                System.out.println("接收到客户端连接: " + clientSocket.getInetAddress());

                // 为每个客户端连接创建一个新线程处理
                new Thread(() -> handleClient(clientSocket)).start();
            }

        } catch (IOException e) {
            System.err.println("服务器启动失败: " + e.getMessage());
            e.printStackTrace();
        } finally {
            if (serverSocket != null) {
                try {
                    serverSocket.close();
                    System.out.println("服务器已关闭");
                } catch (IOException e) {
                    System.err.println("服务器关闭失败: " + e.getMessage());
                }
            }
        }
    }

    /**
     * 处理客户端连接，接收分析结果并返回响应
     */
    private static void handleClient(Socket clientSocket) {
        ObjectInputStream in = null;
        PrintWriter out = null;

        try {
            // 获取输入流，读取客户端发送的对象
            in = new ObjectInputStream(clientSocket.getInputStream());
            Result result = (Result) in.readObject();

            // 打印接收的分析结果
            printAnalysisResult(result);

            // 发送响应
            out = new PrintWriter(clientSocket.getOutputStream(), true);
            out.println("上报成功");

        } catch (IOException | ClassNotFoundException e) {
            System.err.println("处理客户端请求出错: " + e.getMessage());
            e.printStackTrace();
        } finally {
            if (clientSocket != null) {
                try {
                    clientSocket.close();
                } catch (IOException e) {
                   e.printStackTrace();
                }
            }
        }
    }

    /**
     * 打印分析结果到控制台
     */
    private static void printAnalysisResult(Result result) {
        System.out.println("\n===== 接收到的日志分析结果 =====");

        // 打印级别统计
        System.out.println("1. 各级别日志数量统计:");
        Map<String, Long> levelCount = result.getLevelCount();
        for (Map.Entry<String, Long> entry : levelCount.entrySet()) {
            System.out.println("   " + entry.getKey() + ": " + entry.getValue());
        }

        // 打印模块错误统计
        System.out.println("2. 各模块错误日志数量统计:");
        Map<String, Long> moduleErrorCount = result.getModuleErrorCount();
        for (Map.Entry<String, Long> entry : moduleErrorCount.entrySet()) {
            System.out.println("   " + entry.getKey() + ": " + entry.getValue());
        }

        // 打印最早的3条日志
        System.out.println("3. 时间戳最早的3条日志:");
        List<Log> earliestLogs = result.getEarliestLogs();
        for (int i = 0; i < earliestLogs.size(); i++) {
            System.out.println("   " + (i + 1) + ". " + earliestLogs.get(i));
        }

    }
}