/*
 * Copyright (C) 2012 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.model;

import android.content.ContentValues;
import android.net.Uri;
import android.provider.ContactsContract.CommonDataKinds.Photo;
import android.provider.ContactsContract.Data;
import android.provider.ContactsContract.Directory;
import android.provider.ContactsContract.DisplayNameSources;
import android.support.annotation.VisibleForTesting;
import com.android.contacts.common.GroupMetaData;
import com.android.contacts.common.model.account.AccountType;
import com.google.common.collect.ImmutableList;
import java.util.ArrayList;

/**
 * A Contact represents a single person or logical entity as perceived by the user. The information
 * about a contact can come from multiple data sources, which are each represented by a RawContact
 * object. Thus, a Contact is associated with a collection of RawContact objects.
 *
 * <p>The aggregation of raw contacts into a single contact is performed automatically, and it is
 * also possible for users to manually split and join raw contacts into various contacts.
 *
 * <p>Only the {@link ContactLoader} class can create a Contact object with various flags to allow
 * partial loading of contact data. Thus, an instance of this class should be treated as a read-only
 * object.
 */
public class Contact {

  private final Uri mRequestedUri;
  private final Uri mLookupUri;
  private final Uri mUri;
  private final long mDirectoryId;
  private final String mLookupKey;
  private final long mId;
  private final long mNameRawContactId;
  private final int mDisplayNameSource;
  private final long mPhotoId;
  private final String mPhotoUri;
  private final String mDisplayName;
  private final String mAltDisplayName;
  private final String mPhoneticName;
  private final boolean mStarred;
  private final Integer mPresence;
  private final boolean mSendToVoicemail;
  private final String mCustomRingtone;
  private final boolean mIsUserProfile;
  private final Contact.Status mStatus;
  private final Exception mException;
  private ImmutableList<RawContact> mRawContacts;
  private ImmutableList<AccountType> mInvitableAccountTypes;
  private String mDirectoryDisplayName;
  private String mDirectoryType;
  private String mDirectoryAccountType;
  private String mDirectoryAccountName;
  private int mDirectoryExportSupport;
  private ImmutableList<GroupMetaData> mGroups;
  private byte[] mPhotoBinaryData;
  /**
   * Small version of the contact photo loaded from a blob instead of from a file. If a large
   * contact photo is not available yet, then this has the same value as mPhotoBinaryData.
   */
  private byte[] mThumbnailPhotoBinaryData;

  /** Constructor for special results, namely "no contact found" and "error". */
  private Contact(Uri requestedUri, Contact.Status status, Exception exception) {
    if (status == Status.ERROR && exception == null) {
      throw new IllegalArgumentException("ERROR result must have exception");
    }
    mStatus = status;
    mException = exception;
    mRequestedUri = requestedUri;
    mLookupUri = null;
    mUri = null;
    mDirectoryId = -1;
    mLookupKey = null;
    mId = -1;
    mRawContacts = null;
    mNameRawContactId = -1;
    mDisplayNameSource = DisplayNameSources.UNDEFINED;
    mPhotoId = -1;
    mPhotoUri = null;
    mDisplayName = null;
    mAltDisplayName = null;
    mPhoneticName = null;
    mStarred = false;
    mPresence = null;
    mInvitableAccountTypes = null;
    mSendToVoicemail = false;
    mCustomRingtone = null;
    mIsUserProfile = false;
  }

  /** Constructor to call when contact was found */
  public Contact(
      Uri requestedUri,
      Uri uri,
      Uri lookupUri,
      long directoryId,
      String lookupKey,
      long id,
      long nameRawContactId,
      int displayNameSource,
      long photoId,
      String photoUri,
      String displayName,
      String altDisplayName,
      String phoneticName,
      boolean starred,
      Integer presence,
      boolean sendToVoicemail,
      String customRingtone,
      boolean isUserProfile) {
    mStatus = Status.LOADED;
    mException = null;
    mRequestedUri = requestedUri;
    mLookupUri = lookupUri;
    mUri = uri;
    mDirectoryId = directoryId;
    mLookupKey = lookupKey;
    mId = id;
    mRawContacts = null;
    mNameRawContactId = nameRawContactId;
    mDisplayNameSource = displayNameSource;
    mPhotoId = photoId;
    mPhotoUri = photoUri;
    mDisplayName = displayName;
    mAltDisplayName = altDisplayName;
    mPhoneticName = phoneticName;
    mStarred = starred;
    mPresence = presence;
    mInvitableAccountTypes = null;
    mSendToVoicemail = sendToVoicemail;
    mCustomRingtone = customRingtone;
    mIsUserProfile = isUserProfile;
  }

  public Contact(Uri requestedUri, Contact from) {
    mRequestedUri = requestedUri;

    mStatus = from.mStatus;
    mException = from.mException;
    mLookupUri = from.mLookupUri;
    mUri = from.mUri;
    mDirectoryId = from.mDirectoryId;
    mLookupKey = from.mLookupKey;
    mId = from.mId;
    mNameRawContactId = from.mNameRawContactId;
    mDisplayNameSource = from.mDisplayNameSource;
    mPhotoId = from.mPhotoId;
    mPhotoUri = from.mPhotoUri;
    mDisplayName = from.mDisplayName;
    mAltDisplayName = from.mAltDisplayName;
    mPhoneticName = from.mPhoneticName;
    mStarred = from.mStarred;
    mPresence = from.mPresence;
    mRawContacts = from.mRawContacts;
    mInvitableAccountTypes = from.mInvitableAccountTypes;

    mDirectoryDisplayName = from.mDirectoryDisplayName;
    mDirectoryType = from.mDirectoryType;
    mDirectoryAccountType = from.mDirectoryAccountType;
    mDirectoryAccountName = from.mDirectoryAccountName;
    mDirectoryExportSupport = from.mDirectoryExportSupport;

    mGroups = from.mGroups;

    mPhotoBinaryData = from.mPhotoBinaryData;
    mSendToVoicemail = from.mSendToVoicemail;
    mCustomRingtone = from.mCustomRingtone;
    mIsUserProfile = from.mIsUserProfile;
  }

  public static Contact forError(Uri requestedUri, Exception exception) {
    return new Contact(requestedUri, Status.ERROR, exception);
  }

  public static Contact forNotFound(Uri requestedUri) {
    return new Contact(requestedUri, Status.NOT_FOUND, null);
  }

  /** @param exportSupport See {@link Directory#EXPORT_SUPPORT}. */
  public void setDirectoryMetaData(
      String displayName,
      String directoryType,
      String accountType,
      String accountName,
      int exportSupport) {
    mDirectoryDisplayName = displayName;
    mDirectoryType = directoryType;
    mDirectoryAccountType = accountType;
    mDirectoryAccountName = accountName;
    mDirectoryExportSupport = exportSupport;
  }

  /**
   * Returns the URI for the contact that contains both the lookup key and the ID. This is the best
   * URI to reference a contact. For directory contacts, this is the same a the URI as returned by
   * {@link #getUri()}
   */
  public Uri getLookupUri() {
    return mLookupUri;
  }

  public String getLookupKey() {
    return mLookupKey;
  }

  /**
   * Returns the contact Uri that was passed to the provider to make the query. This is the same as
   * the requested Uri, unless the requested Uri doesn't specify a Contact: If it either references
   * a Raw-Contact or a Person (a pre-Eclair style Uri), this Uri will always reference the full
   * aggregate contact.
   */
  public Uri getUri() {
    return mUri;
  }

  /** Returns the contact ID. */
  @VisibleForTesting
  public long getId() {
    return mId;
  }

  /**
   * @return true when an exception happened during loading, in which case {@link #getException}
   *     returns the actual exception object.
   */
  public boolean isError() {
    return mStatus == Status.ERROR;
  }

  public Exception getException() {
    return mException;
  }

  /** @return true if the specified contact is successfully loaded. */
  public boolean isLoaded() {
    return mStatus == Status.LOADED;
  }

  public long getNameRawContactId() {
    return mNameRawContactId;
  }

  public int getDisplayNameSource() {
    return mDisplayNameSource;
  }

  public long getPhotoId() {
    return mPhotoId;
  }

  public String getPhotoUri() {
    return mPhotoUri;
  }

  public String getDisplayName() {
    return mDisplayName;
  }

  public boolean getStarred() {
    return mStarred;
  }

  public Integer getPresence() {
    return mPresence;
  }

  /**
   * This can return non-null invitable account types only if the {@link ContactLoader} was
   * configured to load invitable account types in its constructor.
   */
  public ImmutableList<AccountType> getInvitableAccountTypes() {
    return mInvitableAccountTypes;
  }

  /* package */ void setInvitableAccountTypes(ImmutableList<AccountType> accountTypes) {
    mInvitableAccountTypes = accountTypes;
  }

  public ImmutableList<RawContact> getRawContacts() {
    return mRawContacts;
  }

  /* package */ void setRawContacts(ImmutableList<RawContact> rawContacts) {
    mRawContacts = rawContacts;
  }

  public long getDirectoryId() {
    return mDirectoryId;
  }

  public boolean isDirectoryEntry() {
    return mDirectoryId != -1
        && mDirectoryId != Directory.DEFAULT
        && mDirectoryId != Directory.LOCAL_INVISIBLE;
  }

  /* package */ void setPhotoBinaryData(byte[] photoBinaryData) {
    mPhotoBinaryData = photoBinaryData;
  }

  public byte[] getThumbnailPhotoBinaryData() {
    return mThumbnailPhotoBinaryData;
  }

  /* package */ void setThumbnailPhotoBinaryData(byte[] photoBinaryData) {
    mThumbnailPhotoBinaryData = photoBinaryData;
  }

  public ArrayList<ContentValues> getContentValues() {
    if (mRawContacts.size() != 1) {
      throw new IllegalStateException("Cannot extract content values from an aggregated contact");
    }

    RawContact rawContact = mRawContacts.get(0);
    ArrayList<ContentValues> result = rawContact.getContentValues();

    // If the photo was loaded using the URI, create an entry for the photo
    // binary data.
    if (mPhotoId == 0 && mPhotoBinaryData != null) {
      ContentValues photo = new ContentValues();
      photo.put(Data.MIMETYPE, Photo.CONTENT_ITEM_TYPE);
      photo.put(Photo.PHOTO, mPhotoBinaryData);
      result.add(photo);
    }

    return result;
  }

  /**
   * This can return non-null group meta-data only if the {@link ContactLoader} was configured to
   * load group metadata in its constructor.
   */
  public ImmutableList<GroupMetaData> getGroupMetaData() {
    return mGroups;
  }

  /* package */ void setGroupMetaData(ImmutableList<GroupMetaData> groups) {
    mGroups = groups;
  }

  public boolean isUserProfile() {
    return mIsUserProfile;
  }

  @Override
  public String toString() {
    return "{requested="
        + mRequestedUri
        + ",lookupkey="
        + mLookupKey
        + ",uri="
        + mUri
        + ",status="
        + mStatus
        + "}";
  }

  private enum Status {
    /** Contact is successfully loaded */
    LOADED,
    /** There was an error loading the contact */
    ERROR,
    /** Contact is not found */
    NOT_FOUND,
  }
}