/*
 * Copyright 2024 The Android Open Source Project
 *
 * 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.
 */
package androidx.media3.session.legacy;

import static androidx.annotation.RestrictTo.Scope.LIBRARY;
import static androidx.media3.common.util.Assertions.checkStateNotNull;

import android.os.Bundle;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
import androidx.media3.common.util.UnstableApi;

/** */
@UnstableApi
@RestrictTo(LIBRARY)
public class MediaBrowserCompatUtils {
  public static boolean areSameOptions(@Nullable Bundle options1, @Nullable Bundle options2) {
    if (options1 == options2) {
      return true;
    } else if (options1 == null) {
      checkStateNotNull(options2);
      return options2.getInt(MediaBrowserCompat.EXTRA_PAGE, -1) == -1
          && options2.getInt(MediaBrowserCompat.EXTRA_PAGE_SIZE, -1) == -1;
    } else if (options2 == null && options1 != null) {
      checkStateNotNull(options1);
      return options1.getInt(MediaBrowserCompat.EXTRA_PAGE, -1) == -1
          && options1.getInt(MediaBrowserCompat.EXTRA_PAGE_SIZE, -1) == -1;
    } else {
      checkStateNotNull(options1);
      checkStateNotNull(options2);
      return options1.getInt(MediaBrowserCompat.EXTRA_PAGE, -1)
              == options2.getInt(MediaBrowserCompat.EXTRA_PAGE, -1)
          && options1.getInt(MediaBrowserCompat.EXTRA_PAGE_SIZE, -1)
              == options2.getInt(MediaBrowserCompat.EXTRA_PAGE_SIZE, -1);
    }
  }

  public static boolean hasDuplicatedItems(@Nullable Bundle options1, @Nullable Bundle options2) {
    int page1 = options1 == null ? -1 : options1.getInt(MediaBrowserCompat.EXTRA_PAGE, -1);
    int page2 = options2 == null ? -1 : options2.getInt(MediaBrowserCompat.EXTRA_PAGE, -1);
    int pageSize1 = options1 == null ? -1 : options1.getInt(MediaBrowserCompat.EXTRA_PAGE_SIZE, -1);
    int pageSize2 = options2 == null ? -1 : options2.getInt(MediaBrowserCompat.EXTRA_PAGE_SIZE, -1);

    int startIndex1, startIndex2, endIndex1, endIndex2;
    if (page1 == -1 || pageSize1 == -1) {
      startIndex1 = 0;
      endIndex1 = Integer.MAX_VALUE;
    } else {
      startIndex1 = pageSize1 * page1;
      endIndex1 = startIndex1 + pageSize1 - 1;
    }

    if (page2 == -1 || pageSize2 == -1) {
      startIndex2 = 0;
      endIndex2 = Integer.MAX_VALUE;
    } else {
      startIndex2 = pageSize2 * page2;
      endIndex2 = startIndex2 + pageSize2 - 1;
    }

    // For better readability, leaving the exclamation mark here.
    return !(endIndex1 < startIndex2 || endIndex2 < startIndex1);
  }

  private MediaBrowserCompatUtils() {}
}