<?php

trait Brizy_Admin_Migrations_PostsTrait {

	private static $project;

	/**
	 * @return |null
	 */
	public function getProjectPost() {
		global $wpdb;

        if ( self::$project ) {
            return self::$project;
        }

		$row = $wpdb->get_results(
			$wpdb->prepare( "SELECT * FROM {$wpdb->posts} p
									WHERE p.post_type = %s and p.post_status='publish' 
									ORDER BY ID DESC LIMIT 1 ", Brizy_Editor_Project::BRIZY_PROJECT ),
			OBJECT
		);

		if ( isset( $row[0] ) ) {
			return self::$project = $row[0];
		}

		return null;
	}

	/**
	 * Get posts and meta
	 */
	public function get_posts_and_meta() {
		global $wpdb;

		// query all posts (all post_type, all post_status) that have meta_key = 'brizy' and is not 'revision'
		return $wpdb->get_results( "
			SELECT p.ID, pm.meta_value FROM {$wpdb->postmeta} pm
			LEFT JOIN {$wpdb->posts} p ON p.ID = pm.post_id
			WHERE pm.meta_key = 'brizy'
			AND p.post_type != 'revision'
			AND p.post_type != 'attachment'
		" );
	}

	/**
	 * Get Globals posts
	 */
	public function get_globals_posts() {
		global $wpdb;

		// query all global posts
		return $wpdb->get_results( "
			SELECT p.ID, pm.meta_value FROM {$wpdb->postmeta} pm
			LEFT JOIN {$wpdb->posts} p ON p.ID = pm.post_id
			WHERE pm.meta_key = 'brizy-project'
			AND p.post_type = 'brizy-project'
		" );
	}

	/**
	 * Parse array of shortcodes recursive
	 */
	public function array_walk_recursive_and_delete( array &$array, callable $callback, $userdata = null ) {
		foreach ( $array as $key => &$value ) {
			if ( is_array( $value ) ) {
				$value = $this->array_walk_recursive_and_delete( $value, $callback, $userdata );
				// if is shortcode parse recursive
				if ( isset( $value['type'], $value['value'] ) ) {
					$this->parse_shortcodes( $value );
				}
			}
		}

		return $array;
	}

	/**
	 * Migrate post
	 */
	public function migrate_post( $json_value ) {
		$old_arr = json_decode( $json_value, true );
		if ( is_null( $old_arr ) ) {
			return $json_value;
		}

		$new_arr = $this->array_walk_recursive_and_delete( $old_arr, function ( $value, $key ) {
			if ( is_array( $value ) ) {
				return empty( $value );
			}

			if ( isset( $value['type'], $value['value'] ) ) {
				// if is shortcode return true
				return true;
			}
		} );

		return json_encode( $new_arr );
	}

	/**
	 * Parse shortcodes
	 */
	public function parse_shortcodes( array &$array ) {
		// rewrite this function in your class

		return $array;
	}

	/**
	 * Unset mobile keys
	 */
	public function unset_prefixed_keys( array &$array, $atts = array() ) {
		// merge with default $atts
		$atts = array_merge(
			array(
				"shortcode"      => "",
				"delete_keys"    => array(),
				"dependent_keys" => false,
				"key_prefix"     => "mobile"
			),
			$atts
		);

		if ( empty( $atts['shortcode'] ) && empty( $atts['delete_keys'] ) ) {
			return $array;
		}

		if ( $atts['shortcode'] == $array['type'] ) {
			$keys_to_remove = array();
			foreach ( $atts['delete_keys'] as $key_to_delete ) {
				// replace "prefix" with empty string then make first letter lowercase
				$key = lcfirst( str_replace( $atts['key_prefix'], "", $key_to_delete ) );
				if ( isset( $array['value'][ $key ], $array['value'][ $key_to_delete ] ) && $array['value'][ $key ] === $array['value'][ $key_to_delete ] ) {
					$keys_to_remove[] = $key_to_delete;
				}
			}

			// !Atention if the number of keys to delete are not the same to not delete
			if ( $atts['dependent_keys'] && count( $keys_to_remove ) != count( $atts['delete_keys'] ) ) {
				$keys_to_remove = array();
			}

			// remove keys
			if ( ! empty( $keys_to_remove ) ) {
				foreach ( $keys_to_remove as $key_to_remove ) {
					unset( $array['value'][ $key_to_remove ] );
				}
			}
		}

		return $array;
	}

}