(!empty($mailinglists)) {			
							$mailinglistscondition = "(";		
							foreach ($mailinglists as $mailinglist_id) {
								$mailinglistscondition .= "list_id = '" . esc_sql($mailinglist_id) . "'";
                                if ($m < count($mailinglists)) {
                                    $mailinglistscondition .= " OR ";
                                }
								$m++;	
							}
						}
						
						$fields = array_filter($fieldsconditions);
						$scopeall = (empty($history -> conditionsscope) || $history -> conditionsscope == "all") ? true : false;
						$fieldsquery = $Subscriber -> get_segmented_query($fields, $scopeall, $condquery);
						
						if (!empty($history -> daterange) && $history -> daterange == "Y") {
							if (!empty($history -> daterangefrom) && !empty($history -> daterangeto)) {
								$daterangefrom = date_i18n("Y-m-d H:i:s", strtotime($history -> daterangefrom));
								$daterangeto = date_i18n("Y-m-d H:i:s", strtotime($history -> daterangeto));
								$fieldsquery .= " AND (" . $wpdb -> prefix . $Subscriber -> table . ".created >= '" . $daterangefrom . "' AND " . $wpdb -> prefix . $Subscriber -> table . ".created <= '" . $daterangeto . "')";
							}
						}
						
						// Countries
						if (!empty($history -> countries)) {
							if (!empty($history -> selectedcountries) && is_array($history -> selectedcountries)) {
								$countries = implode("', '", $history -> selectedcountries);
								$fieldsquery .= " AND (" . $wpdb -> prefix . $Subscriber -> table . ".country IN ('" . $countries . "'))";
							}
						}
						
						/* Attachments */
						$Db -> model = $this -> model;
						$history = $Db -> find(array('id' => $history -> id));
						
						$query = "SELECT DISTINCT " . $wpdb -> prefix . $Subscriber -> table . ".id, "
						. $wpdb -> prefix . $Subscriber -> table . ".email FROM " 
						. $wpdb -> prefix . $Subscriber -> table . " LEFT JOIN "
						. $wpdb -> prefix . $SubscribersList -> table . " ON "
						. $wpdb -> prefix . $Subscriber -> table . ".id = " . $wpdb -> prefix . $SubscribersList -> table . ".subscriber_id";
						
						if (!empty($mailinglistscondition)) {
							$query .= " WHERE " . $mailinglistscondition . ")";
						}
						
						$query .= " AND " . $wpdb -> prefix . $SubscribersList -> table . ".active = 'Y'"
						. str_replace(" AND ()", "", $fieldsquery);
						
						$recurringdate = date_i18n("Y-m-d H:i:s", strtotime($history -> recurringdate . " +" . $history -> recurringvalue . " " . $history -> recurringinterval));
						$recurringsent = ($history -> recurringsent + 1);
						$sent = ($history -> sent + 1);
						
						$Db -> model = $this -> model;
						$Db -> save_field('scheduled', "N", array('id' => $history -> id));
						$Db -> model = $this -> model;
						$Db -> save_field('recurringdate', $recurringdate, array('id' => $history -> id));
						$Db -> model = $this -> model;
						$Db -> save_field('recurringsent', $recurringsent, array('id' => $history -> id));
						$Db -> model = $this -> model;
						$Db -> save_field('sent', $sent, array('id' => $history -> id));
						
						$queue_process_counter_1 = 0;
						$queue_process_counter_2 = 0;
						$queue_process_counter_3 = 0;
						$queue_process = 1;
						$this -> qp_reset_data();
						
						// Send to user roles?
						if (!empty($roles)) {
							$users = array();
							$exclude_users_query = "SELECT GROUP_CONCAT(`user_id`) FROM `" . $wpdb -> prefix . $Unsubscribe -> table . "` WHERE `user_id` != '0'";
							$exclude_users = $wpdb -> get_var($exclude_users_query);
							
							foreach ($roles as $role_key) {
								$users_arguments = array(
									'blog_id'				=>	$GLOBALS['blog_id'],
									'role'					=>	$role_key,
									'exclude'				=>	$exclude_users,
									'fields'				=>	array('ID', 'user_email', 'user_login'),
								);
								
								$role_users = get_users($users_arguments);
								$users = array_merge($users, $role_users);
							}
							
							if (!empty($users)) {
								foreach ($users as $user) {
									$this -> remove_server_limits();
									
									$queue_process_data = array(
										'user_id'					=>	$user -> ID,
										'subject'					=>	$history -> subject,
										//'message'					=>	$history -> message,
										'attachments'				=>	$history -> attachments,
										'post_id'					=>	$history -> post_id,
										'history_id'				=>	$history -> id,
										'theme_id'					=>	$history -> theme_id,
										'senddate'					=>	$history -> senddate,
									);
									
									$this -> {'queue_process_' . $queue_process} -> push_to_queue($queue_process_data);
									
									${'queue_process_counter_' . $queue_process}++;
									if (${'queue_process_counter_' . $queue_process} >= $this -> {'queue_process_' . $queue_process} -> counter_reset) {															
										$this -> {'queue_process_' . $queue_process} -> save();
										$this -> {'queue_process_' . $queue_process} -> reset_data();
										${'queue_process_counter_' . $queue_process} = 0;
									}
									
									$queue_process++;
									if ($queue_process > 3) {
										$queue_process = 1;
									}
									
									continue;
								}
							}
						}
	
						if (!empty($mailinglists)) {
							$query_hash = md5($query);
							if ($ob_subscribers = $this -> get_cache($query_hash)) {
								$subscribers = $ob_subscribers;
							} else {
								$subscribers = $wpdb -> get_results($query);
								$this -> set_cache($query_hash, $subscribers);
							}
												
							if (!empty($subscribers)) {						
								foreach ($subscribers as $subscriber) {
									$this -> remove_server_limits();	
									
									$queue_process_data = array(
										'subscriber_id'				=>	$subscriber -> id,
										'subject'					=>	$history -> subject,
										//'message'					=>	$history -> message,
										'attachments'				=>	$history -> attachments,
										'post_id'					=>	$history -> post_id,
										'history_id'				=>	$history -> id,
										'theme_id'					=>	$history -> theme_id,
										'senddate'					=>	$history -> senddate,
									);
									
									$this -> {'queue_process_' . $queue_process} -> push_to_queue($queue_process_data);
									
									${'queue_process_counter_' . $queue_process}++;
									if (${'queue_process_counter_' . $queue_process} >= $this -> {'queue_process_' . $queue_process} -> counter_reset) {															
										$this -> {'queue_process_' . $queue_process} -> save();
										$this -> {'queue_process_' . $queue_process} -> reset_data();
										${'queue_process_counter_' . $queue_process} = 0;
									}
									
									$queue_process++;
									if ($queue_process > 3) {
										$queue_process = 1;
									}
									
									$recurring_queued++;									
									continue;
								}
							}
						}
						
						$this -> qp_save();
						$this -> qp_dispatch();
					}
				}
			}
			
			echo sprintf(__('%s recurring emails queued', 'wp-mailinglist'), esc_html($recurring_queued)) . '<br/>';
			
			return true;
		}
		
		function queue_scheduled()
        {
			global $wpdb, $Db, $Field, $Mailinglist, $Unsubscribe, $Bounce, $Subscriber, $SubscribersList;
			
			$query = "SELECT * FROM " . $wpdb -> prefix . $this -> table . " WHERE `senddate` <= '" . date_i18n("Y-m-d H:i:s") . "' AND `scheduled` = 'Y'";
			
			$query_hash = md5($query);
			if ($ob_histories = $this -> get_cache($query_hash)) {
				$histories = $ob_histories;
			} else {
				$histories = $wpdb -> get_results($query);
				$this -> set_cache($query_hash, $histories);
			}
			
			$scheduled_queued = 0;
			
			if (!empty($histories)) {						
				foreach ($histories as $history) {
					$this -> remove_server_limits();
					$mailinglists = maybe_unserialize($history -> mailinglists);
					$roles = maybe_unserialize($history -> roles);
					$fieldsconditions = maybe_unserialize($history -> conditions);
					$condquery = maybe_unserialize($history -> condquery);
					$subscriberids = array();
					$subscriberemails = array();
					
					if (!empty($mailinglists) || !empty($roles)) {
						$mailinglistscondition = "(";
						$m = 1;
						
						foreach ($mailinglists as $mailinglist_id) {
							$mailinglistscondition .= "list_id = '" . esc_sql($mailinglist_id) . "'";
                            if ($m < count($mailinglists)) {
                                $mailinglistscondition .= " OR ";
                            }
							$m++;	
						}
						
                        $fields = (empty($fieldsconditions) ? array() : array_filter($fieldsconditions));
						$scopeall = (empty($history -> conditionsscope) || $history -> conditionsscope == "all") ? true : false;
						$fieldsquery = $Subscriber -> get_segmented_query($fields, $scopeall, $condquery);
						
						if (!empty($history -> daterange) && $history -> daterange == "Y") {							
							if (!empty($history -> daterangefrom) && !empty($history -> daterangeto)) {								
								$daterangefrom = date_i18n("Y-m-d H:i:s", strtotime($history -> daterangefrom));
								$daterangeto = date_i18n("Y-m-d H:i:s", strtotime($history -> daterangeto));
								$fieldsquery .= " AND (" . $wpdb -> prefix . $Subscriber -> table . ".created >= '" . $daterangefrom . "' AND " . $wpdb -> prefix . $Subscriber -> table . ".created <= '" . $daterangeto . "')";
							}
						}
						
						// Countries
						if (!empty($history -> countries)) {
							if (!empty($history -> selectedcountries) && is_array($history -> selectedcountries)) {
								$countries = implode("', '", $history -> selectedcountries);
								$fieldsquery .= " AND (" . $wpdb -> prefix . $Subscriber -> table . ".country IN ('" . $countries . "'))";
							}
						}
						
						/* Attachments */
						$Db -> model = $this -> model;
						$history = $Db -> find(array('id' => $history -> id));
						
						$query = "SELECT DISTINCT " . $wpdb -> prefix . $Subscriber -> table . ".id, "
						. $wpdb -> prefix . $Subscriber -> table . ".email FROM " 
						. $wpdb -> prefix . $Subscriber -> table . " LEFT JOIN "
						. $wpdb -> prefix . $SubscribersList -> table . " ON "
						. $wpdb -> prefix . $Subscriber -> table . ".id = " . $wpdb -> prefix . $SubscribersList -> table . ".subscriber_id WHERE "
						. $mailinglistscondition . ") AND " . $wpdb -> prefix . $SubscribersList -> table . ".active = 'Y'"
						. str_replace(" AND ()", "", $fieldsquery);
						
						$Db -> model = $this -> model;
						$Db -> save_field('scheduled', "N", array('id' => $history -> id));
						
						$sent = ($history -> sent + 1);
						$Db -> model = $this -> model;
						$Db -> save_field('sent', $sent, array('id' => $history -> id));
						
						$queue_process_counter_1 = 0;
						$queue_process_counter_2 = 0;
						$queue_process_counter_3 = 0;
						$queue_process = 1;
						$this -> qp_reset_data();
						
						// Send to user roles?
						if (!empty($roles)) {						
							$users = array();
							$exclude_users_query = "SELECT GROUP_CONCAT(`user_id`) FROM `" . $wpdb -> prefix . $Unsubscribe -> table . "` WHERE `user_id` != '0'";
							$exclude_users = $wpdb -> get_var($exclude_users_query);
							
							foreach ($roles as $role_key) {
								$users_arguments = array(
									'blog_id'				=>	$GLOBALS['blog_id'],
									'role'					=>	$role_key,
									'exclude'				=>	$exclude_users,
									'fields'				=>	array('ID', 'user_email', 'user_login'),
								);
								
								$role_users = get_users($users_arguments);
								$users = array_merge($users, $role_users);
							}
							
							if (!empty($users)) {
								foreach ($users as $user) {
									$this -> remove_server_limits();
									
									$queue_process_data = array(
										'user_id'					=>	$user -> ID,
										'subject'					=>	$history -> subject,
										//'message'					=>	$history -> message,
										'attachments'				=>	$history -> attachments,
										'post_id'					=>	$history -> post_id,
										'history_id'				=>	$history -> id,
										'theme_id'					=>	$history -> theme_id,
										'senddate'					=>	$history -> senddate,
									);
									
									$this -> {'queue_process_' . $queue_process} -> push_to_queue($queue_process_data);
									
									${'queue_process_counter_' . $queue_process}++;
									if (${'queue_process_counter_' . $queue_process} >= $this -> {'queue_process_' . $queue_process} -> counter_reset) {															
										$this -> {'queue_process_' . $queue_process} -> save();
										$this -> {'queue_process_' . $queue_process} -> reset_data();
										${'queue_process_counter_' . $queue_process} = 0;
									}
									
									$queue_process++;
									if ($queue_process > 3) {
										$queue_process = 1;
									}
									
									$scheduled_queued++;
									continue;
								}
							}
						}
						
						if (!empty($mailinglists)) {
							$query_hash = md5($query);
							if ($ob_subscribers = $this -> get_cache($query_hash)) {
								$subscribers = $ob_subscribers;
							} else {
								$subscribers = $wpdb -> get_results($query);
								$this -> set_cache($query_hash, $subscribers);
							}
														
							if (!empty($subscribers)) {							
								foreach ($subscribers as $subscriber) {
									$this -> remove_server_limits();											
									
									$queue_process_data = array(
										'subscriber_id'				=>	$subscriber -> id,
										'subject'					=>	$history -> subject,
										//'message'					=>	$history -> message,
										'attachments'				=>	$history -> attachments,
										'post_id'					=>	$history -> post_id,
										'history_id'				=>	$history -> id,
										'theme_id'					=>	$history -> theme_id,
										'senddate'					=>	$history -> senddate,
									);
									
									$this -> {'queue_process_' . $queue_process} -> push_to_queue($queue_process_data);
									
									${'queue_process_counter_' . $queue_process}++;
									if (${'queue_process_counter_' . $queue_process} >= $this -> {'queue_process_' . $queue_process} -> counter_reset) {															
										$this -> {'queue_process_' . $queue_process} -> save();
										$this -> {'queue_process_' . $queue_process} -> reset_data();
										${'queue_process_counter_' . $queue_process} = 0;
									}
									
									$queue_process++;
									if ($queue_process > 3) {
										$queue_process = 1;
									}
									
									$scheduled_queued++;
									continue;
								}
							}
						}
							
						$this -> qp_save();	
						$this -> qp_dispatch();
					}
				}
			}
			
			echo sprintf(__('%s scheduled emails queued', 'wp-mailinglist'), esc_html($scheduled_queued)) . '<br/>';
			return true;
		}
		
		/**
		 * Saves a history record.
		 * Used for both INSERT and UPDATE queries
		 * @param ARRAY. An array of posted data
		 * @param BOOLEAN. Determines whether $data should be validated or not
		 *
		 */
		public function save($data = array(), $validate = true, $insertpost = true)
		{
			global $wpdb, $Html, $Db, $HistoriesList, $user_ID;

			$errors = false;

			$defaults = array(
				'theme_id' => 0,
				'attachment' => 'N',
				'attachmentfile' => '',
				'sent' => 0,
				'created' => $Html->gen_date(),
				'modified' => $Html->gen_date()
			);

			// Normalize data: ensure it's not nested under model key
			$data = (empty($data[$this->model])) ? $data : $data[$this->model];
			// Apply filter for data validation/modification
			$data = apply_filters('newsletters_db_data_before_validate', $data, $this->model);

			// Merge with defaults
			$r = wp_parse_args($data, $defaults);
			$this->data = (array) $this->data;
			$this->data = (object) $r;
			extract($r, EXTR_SKIP);

			// Validate if required
			if ($validate) {
				if (empty($subject)) {
					$this->errors['subject'] = __('No subject specified', 'wp-mailinglist');
				}
				if (empty($message)) {
					$this->errors['message'] = __('No message specified', 'wp-mailinglist');
				}
			}

			if (empty($this->errors)) {
				// Apply filter for table fields
				$this->table_fields = apply_filters('newsletters_db_table_fields', $this->table_fields, $this->model);

				if (!empty($id)) {
					// Update existing record
					$query = "UPDATE `" . $wpdb->prefix . $this->table_name . "` SET ";
					$fields = [];
					unset($this->table_fields['key']);
					unset($this->table_fields['created']);
					unset($this->table_fields['spamscore']);
					unset($this->table_fields['p_id']);

					foreach (array_keys($this->table_fields) as $field) {
						switch ($field) {
							case 'user_id':
								$user_id = empty($user_id) ? get_current_user_id() : $user_id;
								break;
							case 'mailinglists':
								if (!empty($mailinglists) && is_array($mailinglists)) {
									$mailinglists = maybe_serialize($mailinglists);
								}
								break;
							case 'modified':
								${$field} = $Html->gen_date();
								break;
						}
						if (isset(${$field}) && !is_array(${$field})) {
							$fields[] = "`" . $field . "` = '" . esc_sql(${$field}) . "'";
						}
					}
					$query .= implode(', ', $fields);
					$query .= " WHERE `id` = '" . esc_sql($id) . "'";
				} else {
					// Insert new record
					$fields = [];
					$values = [];
					unset($this->table_fields['key']);
					unset($this->table_fields['id']);
					unset($this->table_fields['spamscore']);
					unset($this->table_fields['p_id']);

					foreach (array_keys($this->table_fields) as $field) {
						switch ($field) {
							case 'mailinglists':
								if (!empty($mailinglists) && is_array($mailinglists)) {
									$mailinglists = maybe_serialize($mailinglists);
								}
								break;
							case 'user_id':
								$user_id = empty($user_id) ? get_current_user_id() : $user_id;
								break;
						}
						if (isset(${$field}) && !is_array(${$field})) {
							$fields[] = "`" . $field . "`";
							$values[] = "'" . esc_sql(${$field}) . "'";
						}
					}

					$query = "INSERT INTO `" . $wpdb->prefix . $this->table_name . "` (" . implode(', ', $fields) . ") VALUES (" . implode(', ', $values) . ")";
				}

				$result = $wpdb->query($query);

				if ($result !== false && $result >= 0) {
					$this->insertid = empty($id) ? $wpdb->insert_id : $id;
					$history_id = $this->insertid;

					// Handle attachments
					if (!empty($newattachments)) {
						foreach ($newattachments as $newattachment) {
							$newattachment['history_id'] = $this->insertid;
							$Db->model = $HistoriesAttachment->model;
							$Db->save($newattachment, true);
						}
					}

					// Handle custom post type
					$this->delete_all_cache();
					if ($history = $this->get($history_id, false)) {
						if (isset($insertpost) && $insertpost) {
							$custompostslug = $this->get_option('custompostslug');
							$post_status = empty($history->sent) ? 'draft' : 'publish';

							$post_data = array(
								'ID' => empty($history->p_id) ? false : $history->p_id,
								'post_content' => $history->message,
								'post_title' => $history->subject,
								'post_status' => $post_status,
								'post_type' => $custompostslug,
								'post_author' => $user_ID,
								'post_date' => $Html->gen_date(),
								'post_date_gmt' => get_gmt_from_date($Html->gen_date()),
							);

							if ($contents = $this->Content()->find_all(array('history_id' => $history->id))) {
								foreach ($contents as $content) {
									$post_data['post_content'] .= "\r\n\r\n" . $content->content;
								}
							}

							$p_id = wp_insert_post($post_data, true);

							if (!is_wp_error($p_id)) {
								$imagespost = $this->get_option('imagespost');
								if ($p_id != $imagespost) {
									update_post_meta($p_id, '_newsletters_history_id', $history_id);
									update_post_meta($p_id, 'grapejs_content', isset($data['grapejs_content']) ? $data['grapejs_content'] : '');
									update_post_meta($p_id, 'using_grapeJS', isset($data['using_grapeJS']) ? $data['using_grapeJS'] : '');
								}
								$Db->model = $this->model;
								$Db->save_field('p_id', $p_id, array('id' => $history_id));
								do_action('newsletters_history_post_updated', $p_id, $history, $post_data);
							} else {
								$this->log_error($p_id->get_error_message());
							}
						}
					}

					// Handle mailing lists
					$Db->model = $HistoriesList->model;
					$Db->delete_all(array('history_id' => $this->insertid));
					$mailinglists = maybe_unserialize(isset($mailinglists) ? $mailinglists : '');
					if (!empty($mailinglists) && is_array($mailinglists)) {
						foreach ($mailinglists as $list_id) {
							$Db->model = $HistoriesList->model;
							if (!$Db->find(array('history_id' => $this->insertid, 'list_id' => $list_id))) {
								$hl_data = array(
									'HistoriesList' => array(
										'history_id' => $this->insertid,
										'list_id' => $list_id,
									)
								);
								$Db->save($hl_data, true);
							}
						}
					}

					return true;
				}

				return false;
			}

			return false;
		}
		
		/**
		 * Retrieves a single history record by ID.
		 * @param INT. The ID of the record to fetch
		 * @param BOOLEAN/OBJ.
		 *
		 */
		function get($history_id = null, $assign = true)
        {
			global $wpdb;
			
			if (!empty($history_id)) {
				$query = "SELECT * FROM `" . $wpdb -> prefix . "" . $this -> table_name . "` WHERE `id` = '" . esc_sql($history_id) . "' LIMIT 1";
				
				$query_hash = md5($query);
				if ($ob_history = $this -> get_cache($query_hash)) {
					return $ob_history;	
				}		
				
				if ($history = $wpdb -> get_row($query)) {
					$history = $this -> init_class($this -> model, $history);
					
					if ($assign == true) {
						$this -> data = (array) $this -> data;
						//$this -> data[$this -> model] = $history;
						$this -> data = $history;
					}
					
					$this -> set_cache($query_hash, $history);
					return $history;
				}
			}
			
			return false;
		}
		
		/**
		 * Retrieves the very first history email ever created.
		 * Simply orders records by "created" date in an ascending manner.
		 * @return OBJ an object with the history email's values.
		 *
		 */
		function get_first($assign = true)
        {
			global $wpdb;
			
			$query = "SELECT * FROM `" . $wpdb -> prefix . "" . $this -> table_name . "` ORDER BY `created` ASC LIMIT 1";
			
			$query_hash = md5($query);
			if ($ob_history = $this -> get_cache($query_hash)) {
				return $ob_history;
			}
			
			if ($email = $wpdb -> get_row($query)) {
				$history = $this -> init_class($this -> model, $email);
				
				if ($assign == true) {
					//$this -> data[$this -> model] = $history;
					$this -> data = $history;
				}
				
				$this -> set_cache($query_hash, $history);
				return $history;
			}
			
			return false;
		}
		
		function get_latest($assign = true)
        {
			global $wpdb;
			
			$query = "SELECT * FROM `" . $wpdb -> prefix . "" . $this -> table_name . "` ORDER BY `created` DESC LIMIT 1";
			
			$query_hash = md5($query);
			if ($ob_history = $this -> get_cache($query_hash)) {
				return $ob_history;
			}
			
			if ($email = $wpdb -> get_row($query)) {
				$history = $this -> init_class($this -> model, $email);
				
				if ($assign == true) {
					//$this -> data[$this -> model] = $history;
					$this -> data = $history;
				}
				
				$this -> set_cache($query_hash, $history);
				return $history;
			}
			
			return false;
		}
		
		/**
		 * Removes multiple history email records.
		 * Makes use of the History::delete() method to delete records.
		 * @param $data ARRAY an array of history ID values.
		 * @return BOOLEAN either true or false depending on whether the operation was successful or not.
		 *
		 */
		function delete_array($data = array())
        {
			global $wpdb;
			
			if (!empty($data)) {
				foreach ($data as $history_id) {
					$this -> delete($history_id);
				}
				
				return true;
			}
			
			return false;
		}
		
		function truncate()
        {
			global $wpdb, $Email;
			
			if ($histories = $this -> History() -> find_all()) {
				foreach ($histories as $history) {
					$this -> History() -> delete($history -> id);
				}
				
				return true;
			}
			
			return false;
		}
		
		function select($limit = false)
        {
			global $Db;
			$historyselect = array();
			$Db -> model = $this -> model;
			
			if ($histories = $Db -> find_all(false, false, array('modified', "DESC"), $limit)) {
				foreach ($histories as $history) {
					$historyselect[$history -> id] = $history -> id . ' - ' . esc_html($history -> subject) . ' (' . date_i18n("Y-m-d", strtotime($history -> modified)) . ')';
				}
			}
			
			return $historyselect;
		}
	}
}

?>