}
			if ( array_key_exists( $action_status_name, $action_stati_and_labels ) ) {
				$action_counts_by_status[ $action_status_name ] = $count;
			}
		}

		return $action_counts_by_status;
	}

	/**
	 * Cancel action.
	 *
	 * @param int $action_id Action ID.
	 *
	 * @throws InvalidArgumentException If $action_id is not identified.
	 */
	public function cancel_action( $action_id ) {
		$post = get_post( $action_id );
		if ( empty( $post ) || ( self::POST_TYPE !== $post->post_type ) ) {
			/* translators: %s is the action ID */
			throw new InvalidArgumentException( sprintf( __( 'Unidentified action %s', 'action-scheduler' ), $action_id ) );
		}
		do_action( 'action_scheduler_canceled_action', $action_id );
		add_filter( 'pre_wp_unique_post_slug', array( $this, 'set_unique_post_slug' ), 10, 5 );
		wp_trash_post( $action_id );
		remove_filter( 'pre_wp_unique_post_slug', array( $this, 'set_unique_post_slug' ), 10 );
	}

	/**
	 * Delete action.
	 *
	 * @param int $action_id Action ID.
	 * @return void
	 * @throws InvalidArgumentException If action is not identified.
	 */
	public function delete_action( $action_id ) {
		$post = get_post( $action_id );
		if ( empty( $post ) || ( self::POST_TYPE !== $post->post_type ) ) {
			/* translators: %s is the action ID */
			throw new InvalidArgumentException( sprintf( __( 'Unidentified action %s', 'action-scheduler' ), $action_id ) );
		}
		do_action( 'action_scheduler_deleted_action', $action_id );

		wp_delete_post( $action_id, true );
	}

	/**
	 * Get date for claim id.
	 *
	 * @param int $action_id Action ID.
	 * @return ActionScheduler_DateTime The date the action is schedule to run, or the date that it ran.
	 */
	public function get_date( $action_id ) {
		$next = $this->get_date_gmt( $action_id );
		return ActionScheduler_TimezoneHelper::set_local_timezone( $next );
	}

	/**
	 * Get Date GMT.
	 *
	 * @param int $action_id Action ID.
	 *
	 * @throws InvalidArgumentException If $action_id is not identified.
	 * @return ActionScheduler_DateTime The date the action is schedule to run, or the date that it ran.
	 */
	public function get_date_gmt( $action_id ) {
		$post = get_post( $action_id );
		if ( empty( $post ) || ( self::POST_TYPE !== $post->post_type ) ) {
			/* translators: %s is the action ID */
			throw new InvalidArgumentException( sprintf( __( 'Unidentified action %s', 'action-scheduler' ), $action_id ) );
		}
		if ( 'publish' === $post->post_status ) {
			return as_get_datetime_object( $post->post_modified_gmt );
		} else {
			return as_get_datetime_object( $post->post_date_gmt );
		}
	}

	/**
	 * Stake claim.
	 *
	 * @param int      $max_actions Maximum number of actions.
	 * @param DateTime $before_date Jobs must be schedule before this date. Defaults to now.
	 * @param array    $hooks       Claim only actions with a hook or hooks.
	 * @param string   $group       Claim only actions in the given group.
	 *
	 * @return ActionScheduler_ActionClaim
	 * @throws RuntimeException When there is an error staking a claim.
	 * @throws InvalidArgumentException When the given group is not valid.
	 */
	public function stake_claim( $max_actions = 10, DateTime $before_date = null, $hooks = array(), $group = '' ) {
		$this->claim_before_date = $before_date;
		$claim_id                = $this->generate_claim_id();
		$this->claim_actions( $claim_id, $max_actions, $before_date, $hooks, $group );
		$action_ids              = $this->find_actions_by_claim_id( $claim_id );
		$this->claim_before_date = null;

		return new ActionScheduler_ActionClaim( $claim_id, $action_ids );
	}

	/**
	 * Get claim count.
	 *
	 * @return int
	 */
	public function get_claim_count() {
		global $wpdb;

		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
		return $wpdb->get_var(
			$wpdb->prepare(
				"SELECT COUNT(DISTINCT post_password) FROM {$wpdb->posts} WHERE post_password != '' AND post_type = %s AND post_status IN ('in-progress','pending')",
				array( self::POST_TYPE )
			)
		);
	}

	/**
	 * Generate claim id.
	 *
	 * @return string
	 */
	protected function generate_claim_id() {
		$claim_id = md5( microtime( true ) . wp_rand( 0, 1000 ) );
		return substr( $claim_id, 0, 20 ); // to fit in db field with 20 char limit.
	}

	/**
	 * Claim actions.
	 *
	 * @param string   $claim_id    Claim ID.
	 * @param int      $limit       Limit.
	 * @param DateTime $before_date Should use UTC timezone.
	 * @param array    $hooks       Claim only actions with a hook or hooks.
	 * @param string   $group       Claim only actions in the given group.
	 *
	 * @return int The number of actions that were claimed.
	 * @throws RuntimeException  When there is a database error.
	 */
	protected function claim_actions( $claim_id, $limit, DateTime $before_date = null, $hooks = array(), $group = '' ) {
		// Set up initial variables.
		$date      = null === $before_date ? as_get_datetime_object() : clone $before_date;
		$limit_ids = ! empty( $group );
		$ids       = $limit_ids ? $this->get_actions_by_group( $group, $limit, $date ) : array();

		// If limiting by IDs and no posts found, then return early since we have nothing to update.
		if ( $limit_ids && 0 === count( $ids ) ) {
			return 0;
		}

		/**
		 * Global wpdb object.
		 *
		 * @var wpdb $wpdb
		 */
		global $wpdb;

		/*
		 * Build up custom query to update the affected posts. Parameters are built as a separate array
		 * to make it easier to identify where they are in the query.
		 *
		 * We can't use $wpdb->update() here because of the "ID IN ..." clause.
		 */
		$update = "UPDATE {$wpdb->posts} SET post_password = %s, post_modified_gmt = %s, post_modified = %s";
		$params = array(
			$claim_id,
			current_time( 'mysql', true ),
			current_time( 'mysql' ),
		);

		// Build initial WHERE clause.
		$where    = "WHERE post_type = %s AND post_status = %s AND post_password = ''";
		$params[] = self::POST_TYPE;
		$params[] = ActionScheduler_Store::STATUS_PENDING;

		if ( ! empty( $hooks ) ) {
			$placeholders = array_fill( 0, count( $hooks ), '%s' );
			$where       .= ' AND post_title IN (' . join( ', ', $placeholders ) . ')';
			$params       = array_merge( $params, array_values( $hooks ) );
		}

		/*
		 * Add the IDs to the WHERE clause. IDs not escaped because they came directly from a prior DB query.
		 *
		 * If we're not limiting by IDs, then include the post_date_gmt clause.
		 */
		if ( $limit_ids ) {
			$where .= ' AND ID IN (' . join( ',', $ids ) . ')';
		} else {
			$where   .= ' AND post_date_gmt <= %s';
			$params[] = $date->format( 'Y-m-d H:i:s' );
		}

		// Add the ORDER BY clause and,ms limit.
		$order    = 'ORDER BY menu_order ASC, post_date_gmt ASC, ID ASC LIMIT %d';
		$params[] = $limit;

		// Run the query and gather results.
		$rows_affected = $wpdb->query( $wpdb->prepare( "{$update} {$where} {$order}", $params ) ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared, WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare

		if ( false === $rows_affected ) {
			throw new RuntimeException( __( 'Unable to claim actions. Database error.', 'action-scheduler' ) );
		}

		return (int) $rows_affected;
	}

	/**
	 * Get IDs of actions within a certain group and up to a certain date/time.
	 *
	 * @param string   $group The group to use in finding actions.
	 * @param int      $limit The number of actions to retrieve.
	 * @param DateTime $date  DateTime object representing cutoff time for actions. Actions retrieved will be
	 *                        up to and including this DateTime.
	 *
	 * @return array IDs of actions in the appropriate group and before the appropriate time.
	 * @throws InvalidArgumentException When the group does not exist.
	 */
	protected function get_actions_by_group( $group, $limit, DateTime $date ) {
		// Ensure the group exists before continuing.
		if ( ! term_exists( $group, self::GROUP_TAXONOMY ) ) {
			/* translators: %s is the group name */
			throw new InvalidArgumentException( sprintf( __( 'The group "%s" does not exist.', 'action-scheduler' ), $group ) );
		}

		// Set up a query for post IDs to use later.
		$query      = new WP_Query();
		$query_args = array(
			'fields'           => 'ids',
			'post_type'        => self::POST_TYPE,
			'post_status'      => ActionScheduler_Store::STATUS_PENDING,
			'has_password'     => false,
			'posts_per_page'   => $limit * 3,
			'suppress_filters' => true, // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.SuppressFilters_suppress_filters
			'no_found_rows'    => true,
			'orderby'          => array(
				'menu_order' => 'ASC',
				'date'       => 'ASC',
				'ID'         => 'ASC',
			),
			'date_query'       => array(
				'column'    => 'post_date_gmt',
				'before'    => $date->format( 'Y-m-d H:i' ),
				'inclusive' => true,
			),
			'tax_query'        => array( // phpcs:ignore WordPress.DB.SlowDBQuery
				array(
					'taxonomy'         => self::GROUP_TAXONOMY,
					'field'            => 'slug',
					'terms'            => $group,
					'include_children' => false,
				),
			),
		);

		return $query->query( $query_args );
	}

	/**
	 * Find actions by claim ID.
	 *
	 * @param string $claim_id Claim ID.
	 * @return array
	 */
	public function find_actions_by_claim_id( $claim_id ) {
		/**
		 * Global wpdb object.
		 *
		 * @var wpdb $wpdb
		 */
		global $wpdb;

		$action_ids  = array();
		$before_date = isset( $this->claim_before_date ) ? $this->claim_before_date : as_get_datetime_object();
		$cut_off     = $before_date->format( 'Y-m-d H:i:s' );

		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
		$results = $wpdb->get_results(
			$wpdb->prepare(
				"SELECT ID, post_date_gmt FROM {$wpdb->posts} WHERE post_type = %s AND post_password = %s",
				array(
					self::POST_TYPE,
					$claim_id,
				)
			)
		);

		// Verify that the scheduled date for each action is within the expected bounds (in some unusual
		// cases, we cannot depend on MySQL to honor all of the WHERE conditions we specify).
		foreach ( $results as $claimed_action ) {
			if ( $claimed_action->post_date_gmt <= $cut_off ) {
				$action_ids[] = absint( $claimed_action->ID );
			}
		}

		return $action_ids;
	}

	/**
	 * Release claim.
	 *
	 * @param ActionScheduler_ActionClaim $claim Claim object to release.
	 * @return void
	 * @throws RuntimeException When the claim is not unlocked.
	 */
	public function release_claim( ActionScheduler_ActionClaim $claim ) {
		$action_ids = $this->find_actions_by_claim_id( $claim->get_id() );
		if ( empty( $action_ids ) ) {
			return; // nothing to do.
		}
		$action_id_string = implode( ',', array_map( 'intval', $action_ids ) );
		/**
		 * Global wpdb object.
		 *
		 * @var wpdb $wpdb
		 */
		global $wpdb;

		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
		$result = $wpdb->query(
			$wpdb->prepare(
				"UPDATE {$wpdb->posts} SET post_password = '' WHERE ID IN ($action_id_string) AND post_password = %s", //phpcs:ignore
				array(
					$claim->get_id(),
				)
			)
		);
		if ( false === $result ) {
			/* translators: %s: claim ID */
			throw new RuntimeException( sprintf( __( 'Unable to unlock claim %s. Database error.', 'action-scheduler' ), $claim->get_id() ) );
		}
	}

	/**
	 * Unclaim action.
	 *
	 * @param string $action_id Action ID.
	 * @throws RuntimeException When unable to unlock claim on action ID.
	 */
	public function unclaim_action( $action_id ) {
		/**
		 * Global wpdb object.
		 *
		 * @var wpdb $wpdb
		 */
		global $wpdb;

		//phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
		$result = $wpdb->query(
			$wpdb->prepare(
				"UPDATE {$wpdb->posts} SET post_password = '' WHERE ID = %d AND post_type = %s",
				$action_id,
				self::POST_TYPE
			)
		);
		if ( false === $result ) {
			/* translators: %s: action ID */
			throw new RuntimeException( sprintf( __( 'Unable to unlock claim on action %s. Database error.', 'action-scheduler' ), $action_id ) );
		}
	}

	/**
	 * Mark failure on action.
	 *
	 * @param int $action_id Action ID.
	 *
	 * @return void
	 * @throws RuntimeException When unable to mark failure on action ID.
	 */
	public function mark_failure( $action_id ) {
		/**
		 * Global wpdb object.
		 *
		 * @var wpdb $wpdb
		 */
		global $wpdb;

		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
		$result = $wpdb->query(
			$wpdb->prepare( "UPDATE {$wpdb->posts} SET post_status = %s WHERE ID = %d AND post_type = %s", self::STATUS_FAILED, $action_id, self::POST_TYPE )
		);
		if ( false === $result ) {
			/* translators: %s: action ID */
			throw new RuntimeException( sprintf( __( 'Unable to mark failure on action %s. Database error.', 'action-scheduler' ), $action_id ) );
		}
	}

	/**
	 * Return an action's claim ID, as stored in the post password column
	 *
	 * @param int $action_id Action ID.
	 * @return mixed
	 */
	public function get_claim_id( $action_id ) {
		return $this->get_post_column( $action_id, 'post_password' );
	}

	/**
	 * Return an action's status, as stored in the post status column
	 *
	 * @param int $action_id Action ID.
	 *
	 * @return mixed
	 * @throws InvalidArgumentException When the action ID is invalid.
	 */
	public function get_status( $action_id ) {
		$status = $this->get_post_column( $action_id, 'post_status' );

		if ( null === $status ) {
			throw new InvalidArgumentException( __( 'Invalid action ID. No status found.', 'action-scheduler' ) );
		}

		return $this->get_action_status_by_post_status( $status );
	}

	/**
	 * Get post column
	 *
	 * @param string $action_id Action ID.
	 * @param string $column_name Column Name.
	 *
	 * @return string|null
	 */
	private function get_post_column( $action_id, $column_name ) {
		/**
		 * Global wpdb object.
		 *
		 * @var wpdb $wpdb
		 */
		global $wpdb;

		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
		return $wpdb->get_var(
			$wpdb->prepare(
				"SELECT {$column_name} FROM {$wpdb->posts} WHERE ID=%d AND post_type=%s", // phpcs:ignore
				$action_id,
				self::POST_TYPE
			)
		);
	}

	/**
	 * Log Execution.
	 *
	 * @throws Exception If the action status cannot be updated to self::STATUS_RUNNING ('in-progress').
	 *
	 * @param string $action_id Action ID.
	 */
	public function log_execution( $action_id ) {
		/**
		 * Global wpdb object.
		 *
		 * @var wpdb $wpdb
		 */
		global $wpdb;

		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
		$status_updated = $wpdb->query(
			$wpdb->prepare(
				"UPDATE {$wpdb->posts} SET menu_order = menu_order+1, post_status=%s, post_modified_gmt = %s, post_modified = %s WHERE ID = %d AND post_type = %s",
				self::STATUS_RUNNING,
				current_time( 'mysql', true ),
				current_time( 'mysql' ),
				$action_id,
				self::POST_TYPE
			)
		);

		if ( ! $status_updated ) {
			throw new Exception(
				sprintf(
					/* translators: 1: action ID. 2: status slug. */
					__( 'Unable to update the status of action %1$d to %2$s.', 'action-scheduler' ),
					$action_id,
					self::STATUS_RUNNING
				)
			);
		}
	}

	/**
	 * Record that an action was completed.
	 *
	 * @param string $action_id ID of the completed action.
	 *
	 * @throws InvalidArgumentException When the action ID is invalid.
	 * @throws RuntimeException         When there was an error executing the action.
	 */
	public function mark_complete( $action_id ) {
		$post = get_post( $action_id );
		if ( empty( $post ) || ( self::POST_TYPE !== $post->post_type ) ) {
			/* translators: %s is the action ID */
			throw new InvalidArgumentException( sprintf( __( 'Unidentified action %s', 'action-scheduler' ), $action_id ) );
		}
		add_filter( 'wp_insert_post_data', array( $this, 'filter_insert_post_data' ), 10, 1 );
		add_filter( 'pre_wp_unique_post_slug', array( $this, 'set_unique_post_slug' ), 10, 5 );
		$result = wp_update_post(
			array(
				'ID'          => $action_id,
				'post_status' => 'publish',
			),
			true
		);
		remove_filter( 'wp_insert_post_data', array( $this, 'filter_insert_post_data' ), 10 );
		remove_filter( 'pre_wp_unique_post_slug', array( $this, 'set_unique_post_slug' ), 10 );
		if ( is_wp_error( $result ) ) {
			throw new RuntimeException( $result->get_error_message() );
		}

		/**
		 * Fires after a scheduled action has been completed.
		 *
		 * @since 3.4.2
		 *
		 * @param int $action_id Action ID.
		 */
		do_action( 'action_scheduler_completed_action', $action_id );
	}

	/**
	 * Mark action as migrated when there is an error deleting the action.
	 *
	 * @param int $action_id Action ID.
	 */
	public function mark_migrated( $action_id ) {
		wp_update_post(
			array(
				'ID'          => $action_id,
				'post_status' => 'migrated',
			)
		);
	}

	/**
	 * Determine whether the post store can be migrated.
	 *
	 * @param [type] $setting - Setting value.
	 * @return bool
	 */
	public function migration_dependencies_met( $setting ) {
		global $wpdb;

		$dependencies_met = get_transient( self::DEPENDENCIES_MET );
		if ( empty( $dependencies_met ) ) {
			$maximum_args_length = apply_filters( 'action_scheduler_maximum_args_length', 191 );
			$found_action        = $wpdb->get_var( // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
				$wpdb->prepare(
					"SELECT ID FROM {$wpdb->posts} WHERE post_type = %s AND CHAR_LENGTH(post_content) > %d LIMIT 1",
					$maximum_args_length,
					self::POST_TYPE
				)
			);
			$dependencies_met    = $found_action ? 'no' : 'yes';
			set_transient( self::DEPENDENCIES_MET, $dependencies_met, DAY_IN_SECONDS );
		}

		return 'yes' === $dependencies_met ? $setting : false;
	}

	/**
	 * InnoDB indexes have a maximum size of 767 bytes by default, which is only 191 characters with utf8mb4.
	 *
	 * Previously, AS wasn't concerned about args length, as we used the (unindex) post_content column. However,
	 * as we prepare to move to custom tables, and can use an indexed VARCHAR column instead, we want to warn
	 * developers of this impending requirement.
	 *
	 * @param ActionScheduler_Action $action Action object.
	 */
	protected function validate_action( ActionScheduler_Action $action ) {
		try {
			parent::validate_action( $action );
		} catch ( Exception $e ) {
			/* translators: %s is the error message */
			$message = sprintf( __( '%s Support for strings longer than this will be removed in a future version.', 'action-scheduler' ), $e->getMessage() );
			_doing_it_wrong( 'ActionScheduler_Action::$args', esc_html( $message ), '2.1.0' );
		}
	}

	/**
	 * (@codeCoverageIgnore)
	 */
	public function init() {
		add_filter( 'action_scheduler_migration_dependencies_met', array( $this, 'migration_dependencies_met' ) );

		$post_type_registrar = new ActionScheduler_wpPostStore_PostTypeRegistrar();
		$post_type_registrar->register();

		$post_status_registrar = new ActionScheduler_wpPostStore_PostStatusRegistrar();
		$post_status_registrar->register();

		$taxonomy_registrar = new ActionScheduler_wpPostStore_TaxonomyRegistrar();
		$taxonomy_registrar->register();
	}
}