actions/videoEdit/VolumeAction.ts

import {Action} from "../../internal/Action.js";
import {Qualifier} from "../../internal/qualifier/Qualifier.js";
import {QualifierValue} from "../../internal/qualifier/QualifierValue.js";
import {IActionModel} from "../../internal/models/IActionModel.js";
import {
  IVolumeActionModel,
  IVolumeByPercentModel,
  IVolumeValueModel
} from "../../internal/models/IVolumeActionModel.js";

/**
 * @description Class to Controls the volume of an audio or video file.
 * @extends SDK.Action
 * @memberOf Actions.VideoEdit
 * @see Visit {@link Actions.VideoEdit|VideoEdit} for an example
 */
class VolumeAction extends Action {
  protected _actionModel: IVolumeActionModel;

  constructor(volumeValue: string | number) {
    super();
    let volumeValueModel: unknown = {mode: 'mute'};
    if (volumeValue !== 'mute') {
      volumeValueModel = {
        mode: (`${volumeValue}`.endsWith('db') ? 'decibels' : 'percent'),
        value: +(`${volumeValue}`.replace('db', ''))
      };
    }

    this._actionModel = {
      actionType: 'volume',
      volumeValue: volumeValueModel as IVolumeValueModel
    };

    const qualifierValue = new QualifierValue(['volume', volumeValue]).setDelimiter(':');
    this.addQualifier(new Qualifier('e', qualifierValue));
  }

  static fromJson(actionModel: IActionModel): VolumeAction {
    const {volumeValue} = (actionModel as IVolumeActionModel);
    const {mode} = volumeValue;
    const value = mode === 'mute' ? mode : (volumeValue as IVolumeByPercentModel).value;
    const suffix = (mode === 'mute' || mode === "percent") ? '' : 'db';


    // We are using this() to allow inheriting classes to use super.fromJson.apply(this, [actionModel])
    // This allows the inheriting classes to determine the class to be created
    return new this(`${value}${suffix}`);
  }
}

export default VolumeAction;