<?php

/**
 * Misc helper methods.
 *
 * @since 1.0
 */

final class FLBuilderUtils {

	/**
	 * Get an instance of WP_Filesystem_Direct.
	 *
	 * @since 1.4.6
	 * @return object A WP_Filesystem_Direct instance.
	 */
	static public function get_filesystem() {
		global $wp_filesystem;

		require_once ABSPATH . '/wp-admin/includes/file.php';

		add_filter( 'filesystem_method', 'FLBuilderUtils::filesystem_method' );

		WP_Filesystem();

		remove_filter( 'filesystem_method', 'FLBuilderUtils::filesystem_method' );

		return $wp_filesystem;
	}

	/**
	 * Sets the filesystem method to direct.
	 *
	 * @since 1.4.6
	 * @return string
	 */
	static public function filesystem_method() {
		return 'direct';
	}

	/**
	 * Return a snippet without punctuation at the end.
	 *
	 * @since 1.2.3
	 * @param string $text The text to truncate.
	 * @param int $length The number of characters to return.
	 * @param string $tail The trailing characters to append.
	 * @return string
	 */
	static public function snippetwop( $text, $length = 64, $tail = '...' ) {
		$text = trim( $text );
		$txtl = function_exists( 'mb_strlen' ) ? mb_strlen( $text ) : strlen( $text );

		if ( $txtl > $length ) {

			for ( $i = 1;' ' != $text[ $length -$i ];$i++ ) {

				if ( $i == $length ) {

					if ( function_exists( 'mb_substr' ) ) {
						return mb_substr( $text,0,$length ) . $tail;
					}

					return substr( $text,0,$length ) . $tail;
				}
			}

			for ( ;',' == $text[ $length -$i ] || '.' == $text[ $length -$i ] || ' ' == $text[ $length -$i ];
			$i++ ) {;}

			if ( function_exists( 'mb_substr' ) ) {
				return mb_substr( $text,0,$length -$i + 1 ) . $tail;
			}

			return substr( $text,0,$length -$i + 1 ) . $tail;
		}

		return $text;
	}

	/**
	 * JSON decode multidimensional array values or object properties.
	 *
	 * @since 1.5.6
	 * @param mixed $data The data to decode.
	 * @return mixed The decoded data.
	 */
	static public function json_decode_deep( $data ) {
		// First check if we have a string and try to decode that.
		if ( is_string( $data ) ) {
			$data = json_decode( $data );
		}

		// Decode object properies or array values.
		if ( is_object( $data ) || is_array( $data ) ) {

			foreach ( $data as $key => $val ) {

				$new_val = null;

				if ( is_string( $val ) ) {

					$decoded = json_decode( $val );

					if ( is_object( $decoded ) || is_array( $decoded ) ) {
						$new_val = $decoded;
					}
				} elseif ( is_object( $val ) || is_array( $val ) ) {
					$new_val = self::json_decode_deep( $val );
				}

				if ( $new_val ) {

					if ( is_object( $data ) ) {
						$data->{$key} = $new_val;
					} elseif ( is_array( $data ) ) {
						$data[ $key ] = $new_val;
					}
				}
			}
		}

		return $data;
	}

	/**
	 * Base64 decode settings if our ModSecurity fix is enabled.
	 *
	 * @since 1.8.4
	 * @return array
	 */
	static public function modsec_fix_decode( $settings ) {
		if ( defined( 'FL_BUILDER_MODSEC_FIX' ) && FL_BUILDER_MODSEC_FIX ) {

			if ( is_string( $settings ) ) {
				$settings = wp_slash( base64_decode( $settings ) );
			} else {

				foreach ( $settings as $key => $value ) {

					if ( is_string( $settings[ $key ] ) ) {
						$settings[ $key ] = wp_slash( base64_decode( $value ) );
					} elseif ( is_array( $settings[ $key ] ) ) {
						$settings[ $key ] = self::modsec_fix_decode( $settings[ $key ] );
					}
				}
			}
		}

		return $settings;
	}

	/**
	 * Get video type and ID from a given URL
	 *
	 * @since 1.9
	 * @param string $url 	The URL to check for video type
	 * @param string $type 	The type of video to check
	 * @return array
	 */
	static public function get_video_data( $url, $type = '' ) {
		if ( empty( $url ) ) {
			return false;
		}

		$y_matches 	= array();
		$vm_matches = array();
		$yt_pattern = '/^(?:(?:(?:https?:)?\/\/)?(?:www.)?(?:youtu(?:be.com|.be))\/(?:watch\?v\=|v\/|embed\/)?([\w\-]+))/is';
		$vm_pattern = '#(?:https?://)?(?:www.)?(?:player.)?vimeo.com/(?:[a-z]*/)*([0-9]{6,11})[?]?.*#';
		$video_data = array(
			'type' => 'mp4',
			'video_id' => '',
		);

		preg_match( $yt_pattern, $url, $yt_matches );
		preg_match( $vm_pattern, $url, $vm_matches );

		if ( isset( $yt_matches[1] ) ) {
			$video_data['type'] 	= 'youtube';
			$video_data['video_id'] = $yt_matches[1];
		} elseif ( isset( $vm_matches[1] ) ) {
			$video_data['type'] 	= 'vimeo';
			$video_data['video_id'] = $vm_matches[1];
		}

		if ( ! empty( $type ) ) {
			if ( $type === $video_data['type'] ) {
				return $video_data['video_id'];
			} else {
				return false;
			}
		}

		return $video_data;
	}

	/**
	 * Use mb_strtolower() if available.s
	 * @since 2.0.2
	 */
	static public function strtolower( $text, $encoding = 'UTF-8' ) {

		if ( function_exists( 'mb_strtolower' ) ) {
			return mb_strtolower( $text, $encoding );
		}
		return strtolower( $text );
	}

}
