import { Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common';
import { ClientGrpc, Client } from '@nestjs/microservices';
import { grpcClientOptions } from './grpc-scene.options';
import { Logger } from '@nestjs/common';
import { DataChannel } from 'node-datachannel';
import * as path from 'path';
import { BehaviorSubject, filter, ignoreElements, take } from 'rxjs';
// import * as streamBuffers from 'stream-buffers';
import { ActionType } from './actionType';
import { CacheService } from 'src/cache/cache.service';
import { StreamService } from './stream/stream.service';
import { InjectQueue } from '@nestjs/bull';
import { Queue } from 'bull';
import { RotateService } from 'src/rotate/rotate.service';
import { DelayQueue, RxQueue, ThrottleQueue, DebounceQueue } from 'rx-queue';
import { MoveService } from 'src/move/move.service';
import { GetRouterService } from 'src/get-router/get-router.service';

@Injectable()
export class SceneService implements OnModuleInit, OnModuleDestroy {
  constructor(
    private cacheService: CacheService,
    private streamService: StreamService,
    private rotateService: RotateService,
    private moveService: MoveService,
    private getRouterService: GetRouterService,
    @InjectQueue('rotate') private rotateQueue: Queue,
  ) { }
  @Client(grpcClientOptions) private readonly client: ClientGrpc;
  private sceneGrpcService: SceneGrpcService;

  private logger: Logger = new Logger('SceneService');
  private frameCntInterval = 1000;
  public _frameInteval: NodeJS.Timeout;
  public _frameTimeout: NodeJS.Timeout;
  private channel: DataChannel;
  public startSteaming = new BehaviorSubject<boolean>(false);
  private user_id: string;
  private roomId: string;
  private onSteaming = false;
  private rotateframeCnt = -1;
  private mockserverTime = Date.now() - 1653000000478;
  private lastRenderMedia = '';
  private frameCnt = new BehaviorSubject<number>(-1);
  private frameCntSubscription: any;
  private roQueueSubscription: any;
  private moveQueueSubscription: any;
  private walkingSub: any;

  private streamServiceSub: any;
  private roQueue: RxQueue = new DelayQueue(80);
  private clickQueue: RxQueue = new DebounceQueue(500);
  private moveQueue: RxQueue = new DelayQueue(100);
  private rotateTimeStamp: number;
  private lastMoveCnt = -1;
  private currentMoveMaker = '';
  private onMoving = false;
  private onRotating = false;
  private firstRender = false;
  private currentPoint = '';


  public lastMoveStreamFrame = new BehaviorSubject<StreamFrameType>({
    frame: -1,
    clipPath: '',
    metaData: '',
  });

  onModuleInit(): void {
    this.sceneGrpcService =
      this.client.getService<SceneGrpcService>('SceneGrpcService');
    this.logger.log('init SceneGrpcService');
    this.streamServiceSub = this.streamService.onSteaming.subscribe((val) => {
      this.onSteaming = val;
    });
    Number.prototype.padLeft = function (n, str) {
      return Array(n - String(this).length + 1).join(str || '0') + this;
    };
  }

  startStream(): void {
    clearInterval(this._frameInteval);
    if (this.frameCnt.value === -1) {
      this._frameInteval = setInterval(async () => {
        const next = this.frameCnt.value + 1;
        this.frameCnt.next(next);
      }, 1000);
    }
  }

  holdSteam(): void {
    clearInterval(this._frameInteval);
  }

  resumeStream(value: number) {
    this.onMoving = false;
    this.frameCnt.next(value);
    clearTimeout(this._frameTimeout);
    clearInterval(this._frameInteval);
    this._frameTimeout = setTimeout(() => {
      this._frameInteval = setInterval(async () => {
        const next = this.frameCnt.getValue() + 1;
        this.frameCnt.next(next);
      }, 1000);
    }, 1000);
  }

  stopStream(): void {
    if (this.frameCntSubscription) {
      this.frameCntSubscription.unsubscribe();
      this.frameCntSubscription = null;
    }
    if (this.roQueueSubscription) {
      this.roQueueSubscription.unsubscribe();
      this.roQueueSubscription = null;
    }
    if (this.moveQueueSubscription) {
      this.moveQueueSubscription.unsubscribe();
      this.moveQueueSubscription = null;
    }
    this.frameCnt.next(-1);
    clearInterval(this._frameInteval);
    this.rotateframeCnt = -1;
  }

  setConfig(user_id: string, roomId: string): void {
    this.user_id = user_id;
    this.roomId = roomId;
  }

  onModuleDestroy() {
    if ('unsubscribe' in this.streamServiceSub) {
      this.streamService.onSteaming.unsubscribe();
    }
  }

  getRoute(request: RouteRequest) {
    return this.sceneGrpcService.getRoute(request);
  }
  getBreakPoint(request: GetBreakPointRequest) {
    return this.sceneGrpcService.getBreakPoint(request);
  }

  init(request: InitRequest) {
    try {
      // const initReply = this.sceneGrpcService.init(request);
      // initReply.subscribe((reply) => {
      //   console.log('initReply', reply);
      // });
      this.rotateService.init(request.app_id, request.user_id);
      this.moveService.init(request.app_id, request.user_id);
    } catch (error) {
      console.log('error', error);
    }
  }

  exit(request: ExitRequest) {
    // const exitReply = this.sceneGrpcService.exit(request);
    // exitReply.subscribe((reply) => {
    //   console.log('exitReply', reply);
    // });
  }

  async rotate(request: RotateRequest) {
    try {
      if (!this.roQueueSubscription) {
        this.handleRotateStream();
      }
      if (!this.onSteaming) {
        let redisMeta: StreamReplyType;
        this.onRotating = true;
        if (this.onMoving) {
          const lastStreamFrame = this.lastMoveStreamFrame.getValue();
          const metaData: StreamReplyType = JSON.parse(
            lastStreamFrame.metaData,
          ) as any as StreamReplyType;
          const newUserStates: NewUserStatesType = metaData.newUserStates.find(
            (item) => item.userId === this.user_id,
          );
          const trace_id = metaData.traceIds[0];
          const userId = newUserStates.userId;
          const breakPointId = lastStreamFrame.marker
            .replace('P', '')
            .replace('T', '-');
          const cameraAngle = newUserStates.playerState.camera.angle;
          const playerAngle = newUserStates.playerState.player.angle;
          this.onMoving = false;
          console.log('stop-data', trace_id, userId, cameraAngle, cameraAngle);
          redisMeta = await this.moveService.stop(
            trace_id,
            userId,
            breakPointId,
            cameraAngle,
            playerAngle,
          );
          console.log('stop-redisMeta', redisMeta);
          // redisMeta = await this.rotateService.rotate(request);
        } else {
          redisMeta = await this.rotateService.rotate(request);
        }

        if (redisMeta && 'mediaSrc' in redisMeta) {
          const mediaSrc: string = redisMeta.mediaSrc || '';
          if (mediaSrc.length > 0) {
            let src = mediaSrc.split('?')[0];
            // 临时本地替换路经
            src = src.replace('/0000000001/', '');
            // 判断不是同一条源时才推出
            if (this.lastRenderMedia !== src) {
              // console.log('不同源');
              // this.frameCnt += 1;
              console.log('[core-src]', src);

              this.holdSteam();
              this.lastRenderMedia = src;
              const clipPath = path.join(__dirname, `../ws/video/${src}`);
              // console.log('src-clipPath', src, clipPath);
              delete redisMeta.mediaSrc;
              const stream: StreamFrameType = {
                frame: -1,
                clipPath: clipPath,
                metaData: JSON.stringify(redisMeta),
                serverTime: this.mockserverTime,
                DIR: 3,
              };
              this.roQueue.next(stream);
            }
          }
        }
      }
    } catch (error) {
      this.logger.error('rotate', error);
      console.log('error', error);
    }
  }

  joystick(request: JoystickRequest) {
    return this.sceneGrpcService.joystick(request);
  }

  handleDataChanelOpen(channel: DataChannel): void {
    this.channel = channel;
    this.streamService.setChannel(channel);
    this.startSteaming.next(true);
    this.startStream();
    this.handleStream();
  }

  handleDataChanelClose(): void {
    this.stopStream();
    this.startSteaming.next(false);
    this.streamService.closeChannel();
    const exitRequest: ExitRequest = {
      action_type: 1002,
      user_id: this.user_id,
      trace_id: '',
    };
    this.exit(exitRequest);
  }

  handleMessage(message: string | Buffer) {
    try {
      if (typeof message === 'string') {
        // wasm:特例, requestIframe
        if (message.includes('wasm:')) {
          const msg: RTCMessageRequest = JSON.parse(
            message.replace('wasm:', ''),
          );
          if (msg.MstType === 0) {
            this.logger.log('lost I frame');
            this.handleIframeRequest();
          }
        } else {
          const msg: RTCMessageRequest = JSON.parse(message);
          switch (msg.action_type) {
            case ActionType.walk:
              const walk = msg;
              this.walking(walk);
              break;
            case ActionType.breathPoint:
              this.handleBreath(msg);
              break;
            case ActionType.rotate:
              const rotateRequest: RotateRequest = msg;
              this.rotate(rotateRequest);
              break;
            case ActionType.userStatus:
              this.updateUserStatus(msg);
              break;
            case ActionType.status:
              this.updateStatus();
              break;
            default:
              break;
          }
        }
      }
    } catch (error) {
      this.logger.error('handleMessage:rtc--error', message);
    }
  }

  handleIframeRequest() {
    const lastStreamFrame = this.streamService.lastStreamFrame.getValue();
    lastStreamFrame.DIR = 1;
    console.log('lastStreamFrame', lastStreamFrame);
    const nextFrame = this.frameCnt.getValue() + 1;
    lastStreamFrame.frame = nextFrame;
    this.streamService.pushFrameToSteam(lastStreamFrame);
  }

  async walking(req) {
    console.log('walking', req);
    this.clickQueue.next(req);
    this.walkingSub = this.clickQueue.subscribe(async (request) => {
      const user = this.moveService.users[this.user_id];
      const path = await this.getRouterService.searchRoad(
        user.appId,
        user.breakPointId,
        req.clicking_action.clicking_point,
      );
      const walkingRes = await this.moveService.move(path, request);
      console.log('walkingRes', walkingRes)
      debugger;
      if (walkingRes && !this.onMoving) {
        this.onMoving = true;
        this.holdSteam();
        if (!this.moveQueueSubscription) {
          this.handleMoveSteam();
        }
        const res = Object.keys(walkingRes).map((item) => {
          console.log('item', item);
          return Array.from(walkingRes[item]).map((i) => {
            i['marker'] = item;
            return i;
          });
        });
        const seqs = Array.from(res).flat();
        this.lastMoveCnt = this.frameCnt.value + seqs.length;
        console.log('lastMoveCnt', this.lastMoveCnt);
        seqs.forEach((frame: StreamReplyType) => {
          const mediaSrc = frame.mediaSrc;
          delete frame.mediaSrc;
          const stream: StreamFrameType = {
            frame: -1,
            clipPath: mediaSrc,
            metaData: JSON.stringify(frame),
            serverTime: this.mockserverTime,
            DIR: 1,
          };
          this.moveQueue.next(stream);
        });
      }
    });
  }

  async handleBreath(request) {
    const npsRes = await this.moveService.getBreakPoints(request);
    console.log('npsRes', npsRes);
    this.streamService.pushNormalDataToStream(npsRes);
  }

  updateStatus() {
    const reply = {
      data: { action_type: 1009, echo_msg: { echoMsg: Date.now() } },
      track: false,
    };
    this.streamService.pushNormalDataToStream(reply);
  }
  async updateUserStatus(request) {
    try {
      //TODO 接入redis数据
      const redisMeta = await this.rotateService.getNewUserStateRequest(
        request,
      );
      if (redisMeta) {
        redisMeta.actionType = 1024;
        this.streamService.pushNormalDataToStream(redisMeta);
      }
    } catch (error) {
      this.logger.error('updateUserStatus::function', error);
    }
  }

  pushFirstRender(clipPath: string, metaData: string): Promise<boolean> {
    return new Promise<boolean>(async (resolve, reject) => {
      try {
        const streamData: StreamFrameType = {
          frame: 1,
          clipPath: clipPath,
          metaData: metaData,
          serverTime: this.mockserverTime,
          DIR: 1,
        };
        const hasPush = await this.streamService.pushFrameToSteam(streamData);
        return resolve(hasPush);
      } catch (error) {
        return reject(false);
      }
    });
  }

  handleStream() {
    this.frameCntSubscription = this.frameCnt.subscribe(async (frame) => {
      try {
        console.log('frame', frame);
        if (frame === 1) {
          const redisData = await this.rotateService.echo(this.user_id);
          this.onSteaming = true;
          this.holdSteam();
          if (redisData && 'mediaSrc' in redisData) {
            const mediaSrc: string = redisData.mediaSrc || '';
            if (mediaSrc.length > 0) {
              let src = mediaSrc.split('?')[0];
              // 临时本地替换路经
              src = src.replace('/0000000001/', '');
              const clipPath = path.join(__dirname, `../ws/video/${src}`);
              delete redisData.mediaSrc;
              this.logger.log(
                `user:${this.user_id}:first render stream` +
                JSON.stringify({ path: clipPath, meta: redisData }),
              );
              const status = await this.pushFirstRender(
                clipPath,
                JSON.stringify(redisData),
              );
              if (status) {
                this.firstRender = true;
                this.resumeStream(2);
              } else {
                this.logger.error('first render problem', status);
              }
            }
          }
        }
        if (
          frame > 1 &&
          !this.onSteaming &&
          !this.onMoving &&
          this.firstRender
        ) {
          console.log(`空白流::${frame}`);
          const redisDataAuto = await this.rotateService.echo(this.user_id);
          if (redisDataAuto) {
            'mediaSrc' in redisDataAuto && delete redisDataAuto.mediaSrc;
            const streamMeta: StreamMetaType = {
              frame: frame,
              metaData: JSON.stringify(redisDataAuto),
            };
            this.streamService.pushMetaDataToSteam(streamMeta);
          }
        }
      } catch (error) {
        this.logger.error('handleStream', error);
      }
    });
  }
  handleRotateStream() {
    this.roQueueSubscription = this.roQueue.subscribe(
      async (stream: StreamFrameType) => {
        this.rotateTimeStamp = Date.now();
        if (this.rotateframeCnt === -1) {
          this.rotateframeCnt = this.frameCnt.value;
        }
        this.rotateframeCnt += 1;
        stream.frame = this.rotateframeCnt;
        console.log('[media]', stream.clipPath);
        this.logger.log(
          `roQueueSubscription:frame:${this.rotateframeCnt}  ` +
          JSON.stringify(stream.metaData),
        );
        await this.streamService.pushFrameToSteam(stream);
        setTimeout(() => {
          const now = Date.now();
          if (now - this.rotateTimeStamp > 300) {
            const next = this.rotateframeCnt + 1;
            this.resumeStream(next);
            this.rotateframeCnt = -1;
            this.onMoving = false;
            this.onRotating = false;
          }
        }, 300);
      },
    );
  }

  cleanMoveSteam() {
    if (this.moveQueueSubscription) {
      this.moveQueueSubscription.unsubscribe();
      this.lastMoveCnt = -1;
      this.moveQueueSubscription = null;
    }
    if (this.walkingSub) {
      this.walkingSub.unsubscribe();
      this.walkingSub = null;
    }
  }
  handleMoveSteam() {
    this.moveQueueSubscription = this.moveQueue.subscribe(
      async (stream: StreamFrameType) => {
        const metaData: StreamReplyType = JSON.parse(stream.metaData);
        console.log('handleMoveSteam-onMoving', this.onMoving);
        stream.marker = metaData.marker;
        this.lastMoveStreamFrame.next(stream);
        const next = this.frameCnt.value + 1;
        this.currentMoveMaker = metaData.marker;
        if (this.onMoving) {
          this.frameCnt.next(next);
        } else {
          console.log('handleMoveSteam stop', next, this.currentMoveMaker);
          this.cleanMoveSteam();
          this.resumeStream(next);
          return;
        }
        let src = stream.clipPath.split('?')[0];
        // // 临时本地替换路经
        src = src.replace('/0000000001/', '');
        const clipPath = path.join(__dirname, `../ws/video/${src}`);

        const streamData: StreamFrameType = {
          frame: next,
          clipPath: clipPath,
          metaData: stream.metaData,
          serverTime: this.mockserverTime,
          DIR: 3,
        };
        await this.streamService.pushFrameToSteam(streamData);

        if (this.lastMoveCnt == this.frameCnt.getValue()) {
          const next = this.frameCnt.getValue() + 1;
          console.log('last', next);
          this.resumeStream(next);
          this.cleanMoveSteam();
          const lastFrame = this.lastMoveStreamFrame.getValue();
          const userId = this.user_id;
          const breakPointId = lastFrame.marker.split('T')[1];
          const lastReply = JSON.parse(lastFrame.metaData);
          this.moveService.updateUser(userId, breakPointId, lastReply);
        }
      },
    );
  }
}