package com.backendsys.modules.log.controller;

import cn.hutool.core.convert.Convert;
import cn.hutool.core.util.StrUtil;
import com.backendsys.exception.CustomException;
import com.backendsys.modules.common.config.security.annotations.Anonymous;
import com.backendsys.modules.common.utils.Result;
import com.backendsys.modules.log.utils.DingTalkPushUtil;
import com.backendsys.modules.sse.emitter.SseEmitterManager;
import com.backendsys.modules.sse.utils.SseEmitterUTF8;
import com.backendsys.modules.sse.utils.SseUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.http.codec.ServerSentEvent;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
import reactor.core.publisher.Flux;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.time.Duration;
import java.time.LocalTime;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;

@Slf4j
@RestController
public class LogStreamController {

    @Autowired
    private SseUtil sseUtil;

    @Value("${log-stream.enable}")
    private Boolean isEnable;
    @Value("${log-stream.charset}")
    private String charset;
    @Value("${log-stream.exec}")
    private String exec;
    @Value("${log-stream.sign}")
    private String signValue;

    @Autowired
    private DingTalkPushUtil dingTalkPushUtil;

    @Anonymous
    @GetMapping("/api/test/sendDingMsg")
    public Result sendDingMsg() {
//        DingTalkPushUtil.testSendTextMsg();
//        DingTalkPushUtil.testSendLinkMsg();
        dingTalkPushUtil.testSendLinkMsg();
        return Result.success();
    }


    /**
     * [SSE] 消息监听
     */
    @Anonymous
    @GetMapping(value = "/api/log/stream/watch", produces = "text/event-stream")
    public SseEmitter stream(String sign) {

        if (!isEnable) return null;
        if (StrUtil.isEmpty(sign)) return null;
        if (!signValue.equals(sign)) return null;

        String userId = Convert.toStr(1L);
        SseEmitterUTF8 emitter = new SseEmitterUTF8(Long.MAX_VALUE);
        SseEmitterManager manager = SseEmitterManager.getInstance();
        try {
            // 如果存在，则关闭
            sseUtil.closeIfExist(userId);
            // 创建新连接
            manager.addEmitter(userId, emitter);
            emitter.send(SseEmitter.event().data("Connected successfully! (连接成功)"));

            new Thread(() -> {
                try {
                    Process process = Runtime.getRuntime().exec(exec);  // "ping 127.0.0.1" | "docker logs -f backendsys";
                    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream(), charset));
                    String line;
                    while ((line = reader.readLine()) != null) {
                        emitter.send(SseEmitter.event().data(line));
                    }
                    // emitter.complete();  // 完成后关闭连接
                } catch (IOException e) {
                    System.out.println(e.getMessage());
                    // 不关闭，一直监听
                    // emitter.completeWithError(e);
                }
            }).start();

        } catch (IOException e) {
            // emitter.complete();  // 关闭连接
            manager.emitters.remove(emitter);
        }
        return emitter;
    }


    /**
     * [SSE] 测试发送
     */
    @Anonymous
    @GetMapping("/api/log/stream/send")
    public String send() {
        String message = "{\"message\": \"Hello World 中文\"}";
        sseUtil.send(message);
        return "success";
    }

}