/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import type { CameraPlatformCapability } from '../../camera/CameraPlatformCapability';
import { Log } from '../../utils/Log';

const TAG = '[AspectRatio]:';

export default class AspectRatio {
  public static readonly ALIAS = 'AspectRatio';
  public static readonly ASPECT_RATIO_4_3 = '4:3';
  public static readonly ASPECT_RATIO_1_1 = '1:1';
  public static readonly ASPECT_RATIO_16_9 = '16:9';
  public static readonly DEFAULT_VALUE = $r('app.string.photo_ratio_4_3');
  public static readonly RESOURCE_RATIO_4_3 = AspectRatio.DEFAULT_VALUE;
  public static readonly RESOURCE_RATIO_1_1 = $r('app.string.photo_ratio_1_1');
  public static readonly RESOURCE_RATIO_16_9 = $r('app.string.photo_ratio_16_9');

  public static getPhotoPreviewSize(platform: CameraPlatformCapability, cameraId: string, aspectRatio: Resource) {
    const index = AspectRatio.getIndex(aspectRatio);
    Log.info(`${TAG} getPhotoPreviewSize size = ${JSON.stringify(platform.mPhotoPreviewSize[index])}`);
    return platform.mPhotoPreviewSize[index];
  }

  public static getImageSize(platform: CameraPlatformCapability, cameraId: string, aspectRatio: Resource) {
    const index = AspectRatio.getIndex(aspectRatio);
    Log.info(`${TAG} getImageSize size = ${JSON.stringify(platform.mImageSize[index])}`);
    return platform.mImageSize[index];
  }

  public static convertToResource(aspectRatio: string): Resource {
    switch (aspectRatio) {
      case AspectRatio.ASPECT_RATIO_4_3:
        return AspectRatio.RESOURCE_RATIO_4_3;
      case AspectRatio.ASPECT_RATIO_1_1:
        return AspectRatio.RESOURCE_RATIO_1_1;
      case AspectRatio.ASPECT_RATIO_16_9:
        return AspectRatio.RESOURCE_RATIO_16_9;
      default:
        return AspectRatio.DEFAULT_VALUE;
    }
  }

  public static convertToString(res: Resource): string {
    if (res.id === AspectRatio.RESOURCE_RATIO_4_3.id) {
      return AspectRatio.ASPECT_RATIO_4_3;
    } else if (res.id == AspectRatio.RESOURCE_RATIO_1_1.id) {
      return AspectRatio.ASPECT_RATIO_1_1;
    } else if (res.id == AspectRatio.RESOURCE_RATIO_16_9.id) {
      return AspectRatio.ASPECT_RATIO_16_9;
    }
  }

  private static getIndex(aspectRatio: Resource): number {
    if (aspectRatio.id === AspectRatio.RESOURCE_RATIO_4_3.id) {
      return 0;
    } else if (aspectRatio.id === AspectRatio.RESOURCE_RATIO_1_1.id) {
      return 1;
    } else if (aspectRatio.id === AspectRatio.RESOURCE_RATIO_16_9.id) {
      return 2;
    }
    return 0;
  }
}