/*
 * Copyright (C) 2011 Whisper Systems
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.thoughtcrime.securesms.sms;

import android.content.Context;
import androidx.annotation.NonNull;

import org.thoughtcrime.securesms.ApplicationContext;
import org.session.libsession.messaging.sending_receiving.attachments.Attachment;
import org.session.libsession.messaging.threads.Address;
import org.thoughtcrime.securesms.database.AttachmentDatabase;
import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.database.MessagingDatabase.SyncMessageId;
import org.thoughtcrime.securesms.database.MmsDatabase;
import org.thoughtcrime.securesms.database.MmsSmsDatabase;
import org.thoughtcrime.securesms.database.NoSuchMessageException;
import org.thoughtcrime.securesms.database.SmsDatabase;
import org.thoughtcrime.securesms.database.ThreadDatabase;
import org.thoughtcrime.securesms.database.model.MessageRecord;
import org.thoughtcrime.securesms.database.model.SmsMessageRecord;
import org.thoughtcrime.securesms.jobmanager.JobManager;
import org.thoughtcrime.securesms.jobs.PushGroupSendJob;
import org.thoughtcrime.securesms.jobs.PushMediaSendJob;
import org.thoughtcrime.securesms.jobs.PushTextSendJob;
import org.session.libsignal.utilities.logging.Log;
import org.thoughtcrime.securesms.mms.MmsException;
import org.thoughtcrime.securesms.mms.OutgoingMediaMessage;
import org.session.libsession.messaging.threads.recipients.Recipient;
import org.thoughtcrime.securesms.service.ExpiringMessageManager;
import org.session.libsession.utilities.TextSecurePreferences;

public class MessageSender {

  private static final String TAG = MessageSender.class.getSimpleName();

  public static long send(final Context context,
                          final OutgoingTextMessage message,
                          final long threadId,
                          final boolean forceSms,
                          final SmsDatabase.InsertListener insertListener)
  {
    SmsDatabase database    = DatabaseFactory.getSmsDatabase(context);
    Recipient   recipient   = message.getRecipient();

    long allocatedThreadId;

    if (threadId == -1) {
      allocatedThreadId = DatabaseFactory.getThreadDatabase(context).getOrCreateThreadIdFor(recipient);
    } else {
      allocatedThreadId = threadId;
    }

    long messageId = database.insertMessageOutbox(allocatedThreadId, message, forceSms, System.currentTimeMillis(), insertListener);

    sendTextMessage(context, recipient, forceSms, messageId);

    return allocatedThreadId;
  }

  public static long send(final Context context,
                          final OutgoingMediaMessage message,
                          final long threadId,
                          final boolean forceSms,
                          final SmsDatabase.InsertListener insertListener)
  {
    try {
      ThreadDatabase threadDatabase = DatabaseFactory.getThreadDatabase(context);
      MmsDatabase    database       = DatabaseFactory.getMmsDatabase(context);

      long allocatedThreadId;

      if (threadId == -1) {
        allocatedThreadId = threadDatabase.getOrCreateThreadIdFor(message.getRecipient(), message.getDistributionType());
      } else {
        allocatedThreadId = threadId;
      }

      Recipient recipient = message.getRecipient();
      long      messageId = database.insertMessageOutbox(message, allocatedThreadId, forceSms, insertListener);

      sendMediaMessage(context, recipient, forceSms, messageId, message.getExpiresIn());
      return allocatedThreadId;
    } catch (MmsException e) {
      Log.w(TAG, e);
      return threadId;
    }
  }

  public static void resend(Context context, MessageRecord messageRecord) {
    long       messageId   = messageRecord.getId();
    boolean    forceSms    = messageRecord.isForcedSms();
    long       expiresIn   = messageRecord.getExpiresIn();
    Recipient  recipient   = messageRecord.getRecipient();

    if (messageRecord.isMms()) {
      sendMediaMessage(context, recipient, forceSms, messageId, expiresIn);
    } else {
      sendTextMessage(context, recipient, forceSms, messageId);
    }
  }

  private static void sendMediaMessage(Context context, Recipient recipient, boolean forceSms, long messageId, long expiresIn)
  {
    if (isLocalSelfSend(context, recipient, forceSms)) {
      sendLocalMediaSelf(context, messageId);
    } else if (isGroupPushSend(recipient)) {
      sendGroupPush(context, recipient, messageId, null);
    } else {
      sendMediaPush(context, recipient, messageId);
    }
  }

  private static void sendTextMessage(Context context, Recipient recipient,
                                      boolean forceSms, long messageId)
  {
    if (isLocalSelfSend(context, recipient, forceSms)) {
      sendLocalTextSelf(context, messageId);
    } else {
      sendTextPush(context, recipient, messageId);
    }
  }

  private static void sendTextPush(Context context, Recipient recipient, long messageId) {
    JobManager jobManager = ApplicationContext.getInstance(context).getJobManager();
    jobManager.add(new PushTextSendJob(messageId, recipient.getAddress()));
  }

  private static void sendMediaPush(Context context, Recipient recipient, long messageId) {
    JobManager jobManager = ApplicationContext.getInstance(context).getJobManager();
    PushMediaSendJob.enqueue(context, jobManager, messageId, recipient.getAddress());
  }

  private static void sendGroupPush(Context context, Recipient recipient, long messageId, Address filterAddress) {
    JobManager jobManager = ApplicationContext.getInstance(context).getJobManager();
    PushGroupSendJob.enqueue(context, jobManager, messageId, recipient.getAddress(), filterAddress);
  }

  private static boolean isGroupPushSend(Recipient recipient) {
    return recipient.getAddress().isGroup() &&
           !recipient.getAddress().isMmsGroup();
  }

  private static boolean isLocalSelfSend(@NonNull Context context, @NonNull Recipient recipient, boolean forceSms) {
    return recipient.isLocalNumber()                       &&
           !forceSms                                       &&
           TextSecurePreferences.isPushRegistered(context);
  }

  private static void sendLocalMediaSelf(Context context, long messageId) {
    try {
      ExpiringMessageManager expirationManager  = ApplicationContext.getInstance(context).getExpiringMessageManager();
      AttachmentDatabase     attachmentDatabase = DatabaseFactory.getAttachmentDatabase(context);
      MmsDatabase            mmsDatabase        = DatabaseFactory.getMmsDatabase(context);
      MmsSmsDatabase         mmsSmsDatabase     = DatabaseFactory.getMmsSmsDatabase(context);
      OutgoingMediaMessage   message            = mmsDatabase.getOutgoingMessage(messageId);
      SyncMessageId          syncId             = new SyncMessageId(Address.fromSerialized(TextSecurePreferences.getLocalNumber(context)), message.getSentTimeMillis());

      for (Attachment attachment : message.getAttachments()) {
        attachmentDatabase.markAttachmentUploaded(messageId, attachment);
      }

      mmsDatabase.markAsSent(messageId, true);
      mmsDatabase.markUnidentified(messageId, true);

      mmsSmsDatabase.incrementDeliveryReceiptCount(syncId, System.currentTimeMillis());
      mmsSmsDatabase.incrementReadReceiptCount(syncId, System.currentTimeMillis());

      if (message.getExpiresIn() > 0 && !message.isExpirationUpdate()) {
        mmsDatabase.markExpireStarted(messageId);
        expirationManager.scheduleDeletion(messageId, true, message.getExpiresIn());
      }
    } catch (NoSuchMessageException | MmsException e) {
      Log.w("Failed to update self-sent message.", e);
    }
  }

  private static void sendLocalTextSelf(Context context, long messageId) {
    try {
      ExpiringMessageManager expirationManager = ApplicationContext.getInstance(context).getExpiringMessageManager();
      SmsDatabase            smsDatabase       = DatabaseFactory.getSmsDatabase(context);
      MmsSmsDatabase         mmsSmsDatabase    = DatabaseFactory.getMmsSmsDatabase(context);
      SmsMessageRecord       message           = smsDatabase.getMessage(messageId);
      SyncMessageId          syncId            = new SyncMessageId(Address.fromSerialized(TextSecurePreferences.getLocalNumber(context)), message.getDateSent());

      smsDatabase.markAsSent(messageId, true);
      smsDatabase.markUnidentified(messageId, true);

      mmsSmsDatabase.incrementDeliveryReceiptCount(syncId, System.currentTimeMillis());
      mmsSmsDatabase.incrementReadReceiptCount(syncId, System.currentTimeMillis());

      if (message.getExpiresIn() > 0) {
        smsDatabase.markExpireStarted(messageId);
        expirationManager.scheduleDeletion(message.getId(), message.isMms(), message.getExpiresIn());
      }
    } catch (NoSuchMessageException e) {
      Log.w("Failed to update self-sent message.", e);
    }
  }
}
