/*
 * Copyright (C) 2009 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 com.android.contacts.common;

import android.provider.ContactsContract.Contacts;
import android.support.annotation.IntDef;
import com.android.contacts.common.compat.DirectoryCompat;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

public class ContactsUtils {

  // Telecomm related schemes are in CallUtil
  public static final long USER_TYPE_CURRENT = 0;
  public static final long USER_TYPE_WORK = 1;

  /**
   * Determine UserType from directory id and contact id.
   *
   * <p>3 types of query
   *
   * <p>1. 2 profile query: content://com.android.contacts/phone_lookup_enterprise/1234567890
   * personal and work contact are mixed into one cursor. no directory id. contact_id indicates if
   * it's work contact
   *
   * <p>2. work local query:
   * content://com.android.contacts/phone_lookup_enterprise/1234567890?directory=1000000000 either
   * directory_id or contact_id is enough to identify work contact
   *
   * <p>3. work remote query:
   * content://com.android.contacts/phone_lookup_enterprise/1234567890?directory=1000000003
   * contact_id is random. only directory_id is available
   *
   * <p>Summary: If directory_id is not null, always use directory_id to identify work contact.
   * (which is the case here) Otherwise, use contact_id.
   *
   * @param directoryId directory id of ContactsProvider query
   * @param contactId contact id
   * @return UserType indicates the user type of the contact. A directory id or contact id larger
   *     than a thredshold indicates that the contact is stored in Work Profile, but not in current
   *     user. It's a contract by ContactsProvider and check by Contacts.isEnterpriseDirectoryId and
   *     Contacts.isEnterpriseContactId. Currently, only 2 kinds of users can be detected from the
   *     directoryId and contactId as ContactsProvider can only access current and work user's
   *     contacts
   */
  public static @UserType long determineUserType(Long directoryId, Long contactId) {
    // First check directory id
    if (directoryId != null) {
      return DirectoryCompat.isEnterpriseDirectoryId(directoryId)
          ? USER_TYPE_WORK
          : USER_TYPE_CURRENT;
    }
    // Only check contact id if directory id is null
    if (contactId != null && contactId != 0L && Contacts.isEnterpriseContactId(contactId)) {
      return USER_TYPE_WORK;
    } else {
      return USER_TYPE_CURRENT;
    }
  }

  /**
   * UserType indicates the user type of the contact. If the contact is from Work User (Work Profile
   * in Android Multi-User System), it's {@link #USER_TYPE_WORK}, otherwise, {@link
   * #USER_TYPE_CURRENT}. Please note that current user can be in work profile, where the dialer is
   * running inside Work Profile.
   */
  @Retention(RetentionPolicy.SOURCE)
  @IntDef({USER_TYPE_CURRENT, USER_TYPE_WORK})
  public @interface UserType {}
}