import { BaseModel } from '@verb/src/libs/shared/base/base.model';
import { MessageHasher } from '@verb/src/libs/shared/message-hasher/message-hasher.service';
import { VideoTranscodeData, VideoTranscodeModel } from './video-transcode.model';

export class VideoStatusModel implements BaseModel<VideoStatusData> {
  public constructor(
    private readonly _messageHasher: MessageHasher,
    videoStatusData?: VideoStatusData,
  ) {
    if (videoStatusData) {
      this.fromSchema(videoStatusData);
    }
  }

  public get endedAt() {
    return this._endedAt;
  }

  public set endedAt(_endedAt) {
    this._endedAt = _endedAt;
  }

  public get error() {
    return this._error;
  }

  public set error(_error) {
    this._error = _error;
    this.finish(this._stepDescription);
  }

  public get metadata() {
    return this._metadata;
  }

  public set metadata(_metadata) {
    this._metadata = _metadata;
  }

  public get percentComplete() {
    return +(Math.min(this._stepNumber / Math.max(this._stepCount, 1), 100) * 100).toFixed(2);
  }

  public set progress(_percentComplete: number) {
    if (_percentComplete !== 100 || Math.floor(this.stepNumber) !== this._stepNumber) {
      this._stepNumber = Math.floor(this._stepNumber) + +_percentComplete.toFixed(2) / 100;
    }
  }

  public get startedAt() {
    return this._startedAt;
  }

  public set startedAt(_startedAt) {
    this._startedAt = _startedAt;
  }

  public get statusId() {
    return this._statusId;
  }

  public set statusId(_statusId) {
    this._statusId = _statusId;
  }

  public get stepCount() {
    return this._stepCount;
  }

  public set stepCount(_stepCount) {
    this._stepCount = _stepCount;
  }

  public get stepDescription() {
    return this._stepDescription;
  }

  public set stepDescription(_stepDescription) {
    this._stepDescription = _stepDescription;
  }

  public get stepNumber() {
    return this._stepNumber;
  }

  public set stepNumber(_stepNumber) {
    this._stepNumber = _stepNumber;
  }

  public get videoId() {
    return this._videoId;
  }

  public set videoId(_videoId) {
    this._videoId = _videoId;
    this._metadata.videoId = _videoId;
  }

  public addVideoLocation(format: string, url: string) {
    this._metadata.addVideoLocation(format, url);
  }

  public describe(stepDescription: string) {
    this._stepDescription = stepDescription;
  }

  public finish(stepDescription: string) {
    this._endedAt = new Date();
    this._stepDescription = stepDescription;
    this._stepNumber = this._stepCount;
  }

  public increment(stepDescription: string) {
    this.describe(stepDescription);
    this._stepNumber = Math.min(this._stepNumber + 1, this._stepCount);
  }

  public start(statusId: string, stepDescription: string, stepCount: number) {
    this.statusId = statusId;
    this._startedAt = new Date();
    this._stepDescription = stepDescription;
    this._stepCount = stepCount;
    this._stepNumber = 1;
  }

  public fromSchema(videoStatusData: VideoStatusData) {
    this._endedAt = videoStatusData.ended_at ? new Date(videoStatusData.ended_at) : null;
    this._error = videoStatusData.error;
    this._metadata = new VideoTranscodeModel(this._messageHasher, videoStatusData.metadata);
    this._startedAt = videoStatusData.started_at ? new Date(videoStatusData.started_at) : null;
    this._statusId = videoStatusData.status_id;
    this._stepCount = videoStatusData.step_count;
    this._stepDescription = videoStatusData.step_description;
    this._stepNumber = videoStatusData.step_number;
    this._videoId = videoStatusData.video_id;
  }

  public toSchema(): VideoStatusData {
    return {
      ended_at: this._endedAt ? this._endedAt.toUTCString() : null,
      error: this._error,
      metadata: this._metadata.toSchema(),
      percent_complete: this.percentComplete,
      started_at: this._startedAt ? this._startedAt.toUTCString() : null,
      status_id: this._statusId,
      step_count: this._stepCount,
      step_description: this._stepDescription,
      step_number: this._stepNumber,
      video_id: this._videoId,
    };
  }

  private _endedAt: Date | null = null;
  private _error = '';
  private _metadata = new VideoTranscodeModel(this._messageHasher);
  private _startedAt: Date | null = null;
  private _statusId = '';
  private _stepCount = 0;
  private _stepDescription = '';
  private _stepNumber = 0;
  private _videoId = '';
}

export interface VideoStatusData {
  ended_at: string | null;
  error: string;
  metadata: VideoTranscodeData;
  percent_complete: number;
  started_at: string | null;
  status_id: string;
  step_count: number;
  step_description: string;
  step_number: number;
  video_id: string;
}