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 { BehaviorSubject } 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';
import { ConfigService } from '@nestjs/config';

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

  public _frameInteval: NodeJS.Timeout;
  public _frameTimeout: NodeJS.Timeout;
  public _rotateTimeout: NodeJS.Timeout;
  public _moveTimeout: NodeJS.Timeout;
  public startSteaming = new BehaviorSubject<boolean>(false);
  public onRotating = new BehaviorSubject<boolean>(false);
  public onMoving = new BehaviorSubject<boolean>(false);
  public frameCnt = new BehaviorSubject<number>(-1);
  private rotateframeCnt = -1;
  private moveframeCnt = -1;
  private moveKeyFrame = -1;

  private sceneGrpcService: SceneGrpcService;
  private channel: DataChannel;
  private logger: Logger = new Logger('SceneService');
  private frameCntInterval = 1000;
  private user_id: string;
  private roomId: string;
  private onSteaming = false;

  private mockserverTime = Date.now() - 1653000000478;
  private lastRenderMedia = '';
  private frameCntSubscription: any;

  private roQueueSubscription: any;
  private moveQueueSubscription: any;
  private walkingSub: any;
  private joystickSub: any;
  private clickQueueSub: any;

  private streamServiceSub: any;
  // private roRequestQueue: RxQueue = new DelayQueue(20);
  private roQueue: RxQueue = new DelayQueue(10);
  private clickQueue: RxQueue = new DebounceQueue(500);
  private moveQueue: RxQueue = new DelayQueue(20);
  private joystickQueue: RxQueue = new DebounceQueue(500);
  private requestIFrameQueue: RxQueue = new DebounceQueue(2000);

  private requestIFrameQueueSub: any;
  private roRequestQueueSub: any;
  private rotateTimeStamp: number;
  private lastMoveCnt = -1;

  private firstRender = false;
  private latestBreakPointId: number;
  private isHoldingStream = false;

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

  // initUsers(app_id, userId) {
  //   const user = {
  //     appId: null,
  //     userId: null,
  //     breakPointId: null,
  //     roomId: null,
  //     player: {
  //       position: { x: -700, y: 0, z: 0 },
  //       angle: {
  //         pitch: 0,
  //         yaw: 0,
  //         roll: 0,
  //       },
  //     },
  //     camera: {
  //       position: { x: -1145, y: 0, z: 160 },
  //       angle: {
  //         pitch: 0,
  //         yaw: 0,
  //         roll: 0,
  //       },
  //     },
  //     rotateInfo: {
  //       frameIndex: 0,
  //       horizontal_move: 0,
  //       mediaSrc: null,
  //     },
  //     moveInfo: {},
  //     // traceIds: [],
  //     // actionResponses:[]
  //   };

  //   user.appId = app_id;
  //   user.userId = userId;
  //   user.breakPointId = 100;
  //   this.users[userId] = user;
  // }

  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;
    };
  }

  public isHeaderOrLast(index: number, length: number): boolean {
    if (index === 0 || index === length) {
      return true;
    } else {
      return false;
    }
  }

  public getConfig() {
    return {
      userId: this.user_id,
      roomId: this.roomId,
    };
  }

  public 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);
    }
  }

  public holdSteam(): void {
    clearInterval(this._frameInteval);
    this.isHoldingStream = true;
  }

  public resumeStream(): void {
    this.onMoving.next(false);
    this.onRotating.next(false);
    this.isHoldingStream = false;
    this.moveframeCnt = -1;
    this.rotateframeCnt = -1;
    clearInterval(this._frameInteval);
    this._frameInteval = setInterval(async () => {
      const next = this.frameCnt.getValue() + 1;
      this.frameCnt.next(next);
    }, 1000);
  }

  public 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();
    }
  }

  init(request: InitRequest) {
    try {
      this.rotateService.init(request.app_id, request.user_id);
      this.startSteaming.next(true);
      this.startStream();
      this.handleStream();
      // this.moveService.init(request.app_id, request.user_id);

      // this.initUsers(request.app_id, request.user_id);
    } catch (error) {
      console.log('error', error);
    }
  }

  exit(request: ExitRequest) {
    this.frameCnt.next(-1);
    this.stopStream();
    // const exitReply = this.sceneGrpcService.exit(request);
    // exitReply.subscribe((reply) => {
    //   console.log('exitReply', reply);
    // });
  }

  async rotate(request: RotateRequest) {
    this.handleRotate(request);
    // console.log('request', request)
    // this.roRequestQueue.next(request);
    // if (!this.roRequestQueueSub) {
    //   this.handleRotate();
    // }
  }
  /**
   * rotate请求队列
   */

  async handleRotate(request) {
    // this.roRequestQueueSub = this.roRequestQueue.subscribe(
    //   async (request: RotateRequest) => {
    try {
      if (this.firstRender) {
        if (!this.roQueueSubscription) {
          this.handleRotateStream();
        }
        let redisMeta: StreamReplyType;
        this.onRotating.next(true);
        // 当move时处理
        if (this.onMoving.value) {
          this.onMoving.next(false);
          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 = metaData.breakPointId;
          const cameraAngle = newUserStates.playerState.camera.angle;
          const playerAngle = newUserStates.playerState.player.angle;
          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 {
          // 正常rotate
          redisMeta = await this.rotateService.seqExeRotate(request);
          // console.log(redisMeta);
          //debugger;
        }

        if (redisMeta && 'mediaSrc' in redisMeta) {
          const mediaSrc: string = redisMeta.mediaSrc || '';
          if (mediaSrc.length > 0) {
            const src = mediaSrc.split('?')[0];

            if (src.length > 0) {
              // console.log('不同源');
              this.holdSteam();
              this.lastRenderMedia = src;
              const clipPath = this.configService.get('app.prefix') + src;
              //TODO 临时开出
              // delete redisMeta.mediaSrc;

              const random_boolean = Math.random() < 0.3;

              const stream: StreamFrameType = {
                frame: -1,
                clipPath: clipPath,
                metaData: JSON.stringify(redisMeta),
                serverTime: this.mockserverTime,
                DIR: this.frameCnt.getValue() < 10 ? 3 : random_boolean ? 1 : 3,
              };
              // console.log('rotate', stream, Date.now());
              clearTimeout(this._rotateTimeout);
              this.roQueue.next(stream);
            } else {
              // this.onRotating.next(false);
            }
          }
        }
      }
    } catch (error) {
      this.logger.error('rotate', error);
      console.log('error', error);
    }
    //   },
    // );
  }

  async walking(req) {
    try {
      if (this.clickQueueSub) {
        this.clickQueueSub.unsubscribe();
        this.clickQueueSub = null;
      }
      this.clickQueue.next(req);
      console.log('walking', this.clickQueueSub, JSON.stringify(req));
      // if (!this.clickQueueSub) {
      this.clickQueueSub = this.clickQueue.subscribe(async (request) => {
        const user = this.moveService.users[this.user_id];
        console.log('进入1 - searchRoad');
        const path = await this.getRouterService.searchRoad(
          user.appId,
          user.breakPointId,
          req.clicking_action.clicking_point,
        );
        console.log('walking-path', path);
        if (!path) {
          console.log('不存在--path', path);
          this.resumeStream();
          return;
        }
        // debugger;
        const walkingRes = await this.moveService.move(path, request);

        console.log('walking', walkingRes);
        // debugger;
        if (walkingRes && !this.onMoving.value) {
          // console.log('walkingRes-front', walkingRes);
          // shift出前第一个镜头数据
          const rotateCamData = walkingRes[0];
          console.log('rotateCamData', rotateCamData.length);
          if (rotateCamData?.length) {
            // 头数组[0] rotate 序列， 头是关键key
            walkingRes[0].forEach((item: StreamReplyType, index: number) => {
              item.mType = 'rotate';
              item.DIR = index === 0 ? 1 : 3;
            });
          } else {
            console.log('rotateCamData无数据');
          }

          // 二维数组 做move 序列， move类型
          for (let i = 1; i < walkingRes.length; i++) {
            console.log('walkingRes', walkingRes[i]);
            Array.from(walkingRes[i]).forEach(
              (item: StreamReplyType, index: number) => {
                const dir = this.isHeaderOrLast(
                  index,
                  walkingRes[i].length - 1,
                );
                item.DIR = dir ? 1 : 3;
              },
            );
          }

          // walkingRes marker to everybody
          const seqs = Array.from(
            walkingRes,
          ).flat() as any as StreamReplyType[];

          if (seqs?.length) {
            console.log('walking --总序列--seqs-2', seqs.length);
            this.handleSeqMoving(seqs);
          } else {
            console.error('walking-move无数据');
            this.cleanMoveSteam();
            this.resumeStream();
          }
        }
      });
      // }
    } catch (error) {
      this.logger.error('walking', error);
      this.cleanMoveSteam();
      this.resumeStream();
    }
  }

  async joystick(request: JoystickRequest) {
    try {
      this.joystickQueue.next(request);
      if (!this.joystickSub) {
        this.joystickSub = this.joystickQueue.subscribe(
          async (joystickRequest) => {
            const joystickRes = await this.moveService.joystick(
              joystickRequest,
            );

            // 有数据 [0]是rotate数据，[1-infinity]是walking数据
            if (Array.isArray(joystickRes)) {
              // shift出前第一个镜头数据

              const rotateCamData = joystickRes.shift();
              console.log('rotateCamData', rotateCamData.length);
              if (rotateCamData?.length) {
                // 头数组[0] rotate 序列， 头是关键key
                joystickRes[0].forEach(
                  (item: StreamReplyType, index: number) => {
                    item.mType = 'rotate';
                    item.DIR = index === 0 ? 1 : 3;
                  },
                );
              } else {
                console.log('rotateCamData无数据');
              }
              // 二维数组 做move 序列， move类型
              for (let i = 1; i < joystickRes.length; i++) {
                console.log('walkingRes', joystickRes[i]);
                Array.from(joystickRes[i]).forEach(
                  (item: StreamReplyType, index: number) => {
                    const dir = this.isHeaderOrLast(
                      index,
                      joystickRes[i].length - 1,
                    );
                    item.DIR = dir ? 1 : 3;
                  },
                );
              }
              const seqs = Array.from(
                joystickRes,
              ).flat() as any as StreamReplyType[];

              if (seqs?.length) {
                console.log('joystickRes-seqs', seqs.length);
                this.handleSeqMoving(seqs);
              } else {
                console.warn('joystick-move无数据');
              }
            } else {
              console.log('转交数据');
              this.streamService.pushNormalDataToStream(request);
            }
          },
        );
      }
    } catch (error) {
      this.logger.error('joystick', error);
    }
  }
  /**
   * 主要处理moving的序列动作
   * @param seqs StreamReplyType[]
   */
  handleSeqMoving(seqs: StreamReplyType[]) {
    if (!this.moveQueueSubscription) {
      this.handleMoveSteam();
    }
    console.log('moving-seqs', seqs.length);
    this.onMoving.next(true);
    this.holdSteam();

    seqs.forEach((frame: StreamReplyType) => {
      const mediaSrc = frame.mediaSrc;
      const src = mediaSrc.split('?')[0];

      const clipPath = this.configService.get('app.prefix') + src;
      const type = frame.mType?.length ? frame.mType.slice() : 'move';

      const stream: StreamFrameType = {
        frame: -1,
        clipPath: clipPath,
        metaData: JSON.stringify(frame),
        serverTime: this.mockserverTime,
        DIR: frame.DIR,
        mType: type,
      };
      this.moveQueue.next(stream);
    });
  }

  cleanMoveSteam() {
    if (this.moveQueueSubscription) {
      this.moveQueueSubscription.unsubscribe();
      this.lastMoveCnt = -1;
      this.moveQueueSubscription = null;
    }
    if (this.walkingSub) {
      this.walkingSub.unsubscribe();
      this.walkingSub = null;
    }
    // if (this.clickQueueSub) {
    //   this.clickQueueSub.unsubscribe();
    //   this.clickQueueSub = null;
    // }
  }
  handleMoveSteam() {
    this.moveQueueSubscription = this.moveQueue.subscribe(
      async (stream: StreamFrameType) => {
        const metaData: StreamReplyType = JSON.parse(stream.metaData);

        if (this.moveframeCnt === -1) {
          this.moveframeCnt = this.frameCnt.value;
        }
        this.moveframeCnt += 1;
        this.latestBreakPointId = metaData.breakPointId;

        const streamData: StreamFrameType = {
          frame: this.moveframeCnt,
          clipPath: stream.clipPath,
          metaData: stream.metaData,
          serverTime: this.mockserverTime,
          DIR: stream.DIR,
        };
        console.log(
          '[media-move]',
          this.moveframeCnt,
          stream.clipPath,
          stream.mType,
          stream.DIR,
        );

        this.lastMoveStreamFrame.next(streamData);
        const res = await this.streamService.pushFrameToSteam(streamData);
        if (res.done) {
          clearTimeout(this._moveTimeout);
          this._moveTimeout = setTimeout(() => {
            console.log('move 交权给空流,当前pts', res.frame);
            //TODO 每个结束点 updateUser metaData
            const lastFrame = this.lastMoveStreamFrame.getValue();
            const lastFrameMeta = JSON.parse(lastFrame.metaData);

            const userId = this.user_id;
            const breakPointId = lastFrameMeta.breakPointId;
            const lastReply = lastFrameMeta;
            this.moveService.updateUser(userId, breakPointId, lastReply);
            this.frameCnt.next(res.frame);
            this.resumeStream();
            this.rotateframeCnt = -1;
            this.onMoving.next(false);
            this.cleanMoveSteam();
            console.log('move end');
          }, 300);
        }
      },
    );
  }

  handleDataChanelOpen(channel: DataChannel): void {
    this.channel = channel;
    this.streamService.setChannel(channel);
  }

  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 parseData = message
            ? String(message).replace('wasm:', '')
            : `{"MstType":1}`;
          const msg: RTCMessageRequest = JSON.parse(parseData);
          this.logger.warn('lostIframe-message', msg);
          if (msg.MstType === 0) {
            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.joystick:
              const JoystickRequest = msg as any as JoystickRequest;
              this.joystick(JoystickRequest);
              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);
    }
  }

  async handleIframeRequest() {
    //TODO Iframe 最终传什么？
    this.requestIFrameQueue.next(this.streamService.lastStreamFrame.getValue());
    if (!this.requestIFrameQueueSub) {
      this.requestIFrameQueueSub = this.requestIFrameQueue.subscribe(
        (frameData: StreamFrameType) => {
          const nextFrame = this.frameCnt.getValue() + 1;
          this.logger.warn('lostIframe', nextFrame);
          frameData.frame = nextFrame;
          this.streamService.pushFrameToSteam(frameData);
          this.frameCnt.next(nextFrame);
          this.resumeStream();
        },
      );
    }
  }

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

  updateStatus(): void {
    const reply = {
      data: { action_type: 1009, echo_msg: { echoMsg: Date.now() } },
      track: false,
    };
    this.streamService.pushNormalDataToStream(reply);
  }
  async updateUserStatus(request) {
    try {
      const redisMeta = await this.rotateService.getNewUserStateRequest(
        request,
      );
      if (redisMeta) {
        redisMeta.actionType = 1024;
        this.streamService.pushNormalDataToStream(redisMeta);
      } else {
        this.logger.error('updateUserStatus::function-empty');
      }
    } 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.done);
      } catch (error) {
        return reject(false);
      }
    });
  }

  handleStream() {
    this.logger.log('this.frameCntSubscription', this.frameCntSubscription);
    if (!this.frameCntSubscription) {
      this.frameCntSubscription = this.frameCnt.subscribe(async (frame) => {
        try {
          console.log('frame', frame);
          if (frame === 1) {
            const redisData = await this.rotateService.echo(this.user_id, true);
            console.log('获取-首屏', redisData);
            this.onSteaming = true;
            this.holdSteam();
            if (redisData && 'mediaSrc' in redisData) {
              const mediaSrc: string = redisData.mediaSrc || '';
              if (mediaSrc.length > 0) {
                const src = mediaSrc.split('?')[0];
                // 临时本地替换路经
                // src = src.replace('/10086/', '');
                // const clipPath = join(__dirname, `../ws/${src}`);
                const clipPath = this.configService.get('app.prefix') + src;
                delete redisData.mediaSrc;
                this.logger.log(
                  `user:${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.frameCnt.next(2);
                  this.resumeStream();
                } else {
                  this.logger.error('first render problem', status);
                }
              }
            } else {
              this.logger.error(`首屏::无数据：${frame}`);
            }
          }
          if (
            frame > 1 &&
            !this.onMoving.value &&
            !this.onRotating.value &&
            this.firstRender
          ) {
            const redisDataAuto = await this.rotateService.echo(
              this.user_id,
              false,
            );
            if (redisDataAuto) {
              console.log(`空白流::有数据：${frame}`);
              'mediaSrc' in redisDataAuto && delete redisDataAuto.mediaSrc;
              const streamMeta: StreamMetaType = {
                frame: frame,
                metaData: JSON.stringify(redisDataAuto),
              };
              this.streamService.pushMetaDataToSteam(streamMeta);
            } else {
              this.stopStream();
              console.log('空流无Redis数据');
              throw new Error('空流无Redis数据');
            }
          }
        } catch (error) {
          this.stopStream();
          this.logger.error('handleStream', error);
        }
      });
    }
  }
  /**
   * rotate 推送队列
   */
  handleRotateStream() {
    if (!this.roQueueSubscription) {
      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-rotate]',
            stream.frame,
            this.rotateframeCnt,
            stream.clipPath,
          );
          // this.logger.log(
          //   `roQueueSubscription:frame:${this.rotateframeCnt}  ` +
          //   JSON.stringify(stream.metaData),
          // );

          const res = await this.streamService.pushFrameToSteam(stream);
          if (res.done) {
            clearTimeout(this._rotateTimeout);
            this._rotateTimeout = setTimeout(() => {
              console.log('rotate end', Date.now());
              this.frameCnt.next(res.frame);
              this.resumeStream();
              this.rotateframeCnt = -1;
              this.onMoving.next(false);
              this.onRotating.next(false);
              //TODO rotate完后清除request队列
              if (this.roRequestQueueSub) {
                this.roRequestQueueSub.unsubscribe();
                this.roRequestQueueSub = null;
              }
            }, 300);
          }
        },
      );
    }
  }
}