content: /*
   * Copyright (C) 2019 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.test.services.storage.file;
  
  import static androidx.test.internal.util.Checks.checkNotNull;
  
  import android.net.Uri;
  import androidx.test.services.storage.TestStorageConstants;
  
  import androidx.annotation.RestrictTo;
  import androidx.annotation.RestrictTo.Scope;
  
  /**
   * Constants to access property file data (holding name/value pairs) and convenience methods for
   * build URIs.
   *
   * @hide
   */
  @RestrictTo(Scope.LIBRARY)
  public final class PropertyFile {
  
    /** Represents columns returned by the property file service. */
    public enum Column {
      NAME("name", 0),
      VALUE("value", 1);
  
      private final String columnName;
      private final int position;
  
      private Column(String columnName, int position) {
        this.columnName = checkNotNull(columnName);
        this.position = position;
      }
  
      public String getName() {
        return columnName;
      }
  
      public int getPosition() {
        return position;
      }
  
      public static String[] getNames() {
        Column[] columns = values();
        String[] names = new String[values().length];
        for (int i = 0; i < names.length; i++) {
          names[i] = columns[i].getName();
        }
        return names;
      }
    }
  
    /** Enumerates authorities for property-based (i.e. key/value pair) content providers. */
    public enum Authority {
      TEST_ARGS(TestStorageConstants.TEST_ARGS_PROVIDER_AUTHORITY);
  
      private final String authority;
  
      Authority(String authority) {
        this.authority = checkNotNull(authority);
      }
  
      public String getAuthority() {
        return authority;
      }
    }
  
    /** Returns URI for retrieving all properties. */
    public static Uri buildUri(Authority host) {
      checkNotNull(host);
      return new Uri.Builder().scheme("content").authority(host.getAuthority()).build();
    }
  
    /** Returns URI for retrieving a specific property. */
    public static Uri buildUri(Authority host, String property) {
      checkNotNull(host);
      checkNotNull(property);
      return new Uri.Builder()
          .scheme("content")
          .authority(host.getAuthority())
          .path(property)
          .build();
    }
  
    private PropertyFile() {}
  }
  