<?php
	/**
	* @Description : Custom Functions
	* @Package : Drag & Drop Multiple File Upload - Contact Form 7
	* @Author : CodeDropz
	*/

	if ( ! defined( 'ABSPATH' ) || ! defined('dnd_upload_cf7') || ! defined('dnd_upload_cf7_PRO') ) {
		exit;
	}

    //@note : feb 21 - removed due to bug in submitting cf7 form post (consumed time)
    add_filter('dndmfu_cf7_tag_attributes', function( $atts, $tag ){
        return $atts;
    },60, 2 );

    /**
    * Cron Schedules
    */

    function dndmfu_cf7_cron_schedules( $schedules ) {
        $schedules['10mins'] = array(
            'interval' => 10 * MINUTE_IN_SECONDS, //600 seconds
            'display' => __( 'Every 10 Minutes' )
        );
        return $schedules;
    }

    add_filter( 'cron_schedules', 'dndmfu_cf7_cron_schedules' );

	/**
	* Get users IP Address
	*/

	function dndmfu_cf7_get_user_ip(){
		if( !empty($_SERVER['HTTP_CLIENT_IP']) ) {
			$ip = $_SERVER['HTTP_CLIENT_IP'];
		}elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
			$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
		}else {
			$ip = $_SERVER['REMOTE_ADDR'];
		}
		return apply_filters('wpb_get_ip', $ip);
	}

	/**
	* Filter - Add more validation for file extension
	*/

	function dndmfu_cf7_validate_type( $extension, $supported_types = '' ) {

		$valid = true;
		$extension = preg_replace( '/[^A-Za-z0-9,|]/', '', $extension );

		// not allowed file types
		$not_allowed = array( 'php', 'php3','php4','phtml','exe','script', 'app', 'asp', 'bas', 'bat', 'cer', 'cgi', 'chm', 'cmd', 'com', 'cpl', 'crt', 'csh', 'csr', 'dll', 'drv', 'fxp', 'flv', 'hlp', 'hta', 'htaccess', 'htm', 'htpasswd', 'inf', 'ins', 'isp', 'jar', 'js', 'jse', 'jsp', 'ksh', 'lnk', 'mdb', 'mde', 'mdt', 'mdw', 'msc', 'msi', 'msp', 'mst', 'ops', 'pcd', 'php', 'pif', 'pl', 'prg', 'ps1', 'ps2', 'py', 'rb', 'reg', 'scr', 'sct', 'sh', 'shb', 'shs', 'sys', 'swf', 'tmp', 'torrent', 'url', 'vb', 'vbe', 'vbs', 'vbscript', 'wsc', 'wsf', 'wsf', 'wsh' );

		// allowed ext.
		$allowed_ext = apply_filters('dndmfu_cf7_allowed_extensions', array('ipt') );

		// Search in $not_allowed extension and match
		foreach( $not_allowed as $single_ext ) {
			if ( strpos( $single_ext, $extension, 0 ) !== false && ! in_array( $extension, $allowed_ext )) {
				$valid = false;
				break;
			}
		}

		// If pass on first validation - check extension if exists in allowed types
		if( $valid === true && $supported_types) {
			$extensions = explode('|', strtolower( $supported_types ) );
			if( ! in_array( $extension, $extensions ) ) {
				$valid = false;
			}
		}

		return $valid;
	}

	/**
	* Setup file type pattern for validation
	*/

	function dndmfu_cf7_filetypes( $types ) {
		$file_type_pattern = '';

		// If contact form 7 5.0 and up
		if( function_exists('wpcf7_acceptable_filetypes') ) {
			$file_type_pattern = wpcf7_acceptable_filetypes( $types, 'regex' );
			$file_type_pattern = '/\.(' . $file_type_pattern . ')$/i';
		}else{
			$allowed_file_types = array();
			$file_types = explode( '|', $types );

			foreach ( $file_types as $file_type ) {
				$file_type = trim( $file_type, '.' );
				$file_type = str_replace( array( '.', '+', '*', '?' ), array( '\.', '\+', '\*', '\?' ), $file_type );
				$allowed_file_types[] = $file_type;
			}

			$allowed_file_types = array_unique( $allowed_file_types );
			$file_type_pattern = implode( '|', $allowed_file_types );

			$file_type_pattern = trim( $file_type_pattern, '|' );
			$file_type_pattern = '(' . $file_type_pattern . ')';
			$file_type_pattern = '/\.' . $file_type_pattern . '$/i';
		}

		return $file_type_pattern;
	}

	/**
	* 3rd party - conditional fields cf7
	*/

	function dndmfu_cf7_conditional( $form_id ) {

		if( ! $form_id ) {
			return false;
		}

		// Get visible groups
		$groups = array();

		// Get current form object
		$cf7_post = get_post( $form_id );

		// Extract group shortcode
		$regex = get_shortcode_regex( array('group') );

		// Match pattern
		preg_match_all( '/'. $regex .'/s', $cf7_post->post_content, $matches );

		if( array_key_exists( 3, $matches )) {
			foreach( $matches[3] as $index => $group_name ) {
				$name = array_filter( explode(" ", $group_name ) );
				preg_match('/\[mfile[*|\s].*?\]/', $matches[0][$index], $file_matches );
				if( $file_matches ) {
					$field_name = shortcode_parse_atts( $file_matches[0] );
					$field_name = preg_replace( '/[^a-zA-Z0-9-_]/','', $field_name[1] );
					$groups[ $field_name ] = $name[1];
				}
			}
		}

		return $groups;
	}

	/**
	* Add custom mime-types
	*/

	function dndmfu_cf7_mime_types( $mime_types ){
		$mime_types['xls'] = 'application/excel, application/vnd.ms-excel, application/x-excel, application/x-msexcel';
		$mime_types['xlsx'] = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
		return $mime_types;
	}

	/**
	* Admin Custom Scripts
	*/

	function dndmfu_cf7_admin_scripts() {
		if( isset( $_GET['page'] ) && $_GET['page'] == 'drag-n-drop-upload' ) {
			wp_enqueue_style( 'wp-color-picker' );
			wp_enqueue_script( 'wp-color-picker' );
		}
	}

	/**
	* Add custom inline css for file uploader styling
	*/

	function dndmfu_cf7_footer() {
		$css = '';
		$css = '<style type="text/css">'."\n";
			if( $progress_color = get_option('drag_n_drop_color_progressbar') ) {
				$css .= '.dnd-progress-bar span { background-color:'. esc_attr( $progress_color ) .'!important; }'."\n";
			}
			if( $filename_color = get_option('drag_n_drop_color_filename') ) {
				$css .= '.dnd-upload-details .name span { color:'. esc_attr( $filename_color ) .'!important; }'."\n";
			}
			if( $icon_color = get_option('drag_n_drop_color_delete') ) {
                $css .= '.dnd-upload-status .dnd-upload-details .remove-file span:after { background-image:url(\'data:image/svg+xml,%3Csvg width="35" height="35" viewBox="0 0 35 35" fill="none" xmlns="http://www.w3.org/2000/svg"%3E%3Cpath d="M17.5 0C7.83499 0 0 7.83499 0 17.5C0 27.165 7.83499 35 17.5 35C27.165 35 35 27.165 35 17.5C34.9888 7.83965 27.1604 0.0112198 17.5 0ZM17.5 33.871C8.45857 33.871 1.12903 26.5414 1.12903 17.5C1.12903 8.45857 8.45857 1.12903 17.5 1.12903C26.5414 1.12903 33.871 8.45857 33.871 17.5C33.861 26.5373 26.5373 33.861 17.5 33.871Z" fill="'. urlencode($icon_color) .'"/%3E%3Cpath d="M25.4834 9.51661C25.2629 9.29624 24.9056 9.29624 24.6852 9.51661L17.5 16.7018L10.3148 9.51661C10.0983 9.29236 9.74087 9.28615 9.51661 9.50271C9.29236 9.71927 9.28615 10.0767 9.50271 10.3009C9.50723 10.3057 9.51188 10.3103 9.51661 10.3148L16.7018 17.5L9.51661 24.6852C9.29236 24.9018 9.28615 25.2591 9.50278 25.4834C9.71941 25.7076 10.0768 25.7139 10.301 25.4972C10.3057 25.4927 10.3103 25.488 10.3148 25.4834L17.5 18.2982L24.6852 25.4834C24.9094 25.7 25.2668 25.6938 25.4834 25.4696C25.6947 25.2508 25.6947 24.9039 25.4834 24.6852L18.2982 17.5L25.4834 10.3148C25.7038 10.0944 25.7038 9.73705 25.4834 9.51661Z" fill="'. urlencode($icon_color) .'"/%3E%3C/svg%3E%0A\')!important; }'."\n";
			}
			if( $filesize_color = get_option('drag_n_drop_color_filesize') ) {
				$css .= '.dnd-upload-details .name em { color:'. esc_attr( $filesize_color ) .'!important; }'."\n";
			}
			if( $border_color = get_option('drag_n_drop_border_color') ) {
				$css .= '.codedropz-upload-handler { border-color:'. esc_attr( $border_color ) .'!important; }'."\n";
			}
			if( get_option('drag_n_drop_hide_counter') ) {
				$css .= '.dnd-upload-counter { display:none!important; }'."\n";
			}
			if( $thumbnail_column = get_option('drag_n_drop_thumbnail_column' ) ) {
				$css .= '.codedropz--preview .dnd-upload-status { width: calc( '. ( 100 - ( $thumbnail_column * 2 ) ) .'% / '.$thumbnail_column.' ); }'."\n";
			}
		$css .= '</style>'."\n";

		echo $css;
	}

    /**
	* Fixed Image Orientation
    * From : https://gist.github.com/n7studios/6a764d46bc1d515ba406
    * Credits to : Tim Carr
	*/

    function dndmfu_fix_orientation( $file, $image ) {

        // Attempt to read EXIF data from the image
        $exif_data = wp_read_image_metadata( $file );

        // Make sure there's an orientation
        if( isset( $exif_data['orientation'] ) && in_array( $exif_data['orientation'], array(8,3,6) ) ) {
            switch ( $exif_data['orientation'] ){
                /**
                * Rotate 90 degrees counter-clockwise
                */
                case 8:
                    $image->rotate( 90 );
                    break;

                /**
                * Rotate 180 degrees
                */
                case 3:
                    $image->rotate( 180 );
                    break;

                /**
                * Rotate 270 degrees counter-clockwise ($image->rotate always works counter-clockwise)
                */
                case 6:
                    $image->rotate( 270 );
                    break;
            }
            return $image;
        }

        return $image;
    }

    /**
    * Parse img tags in email
    */

    function dndmfu_cf7_parse_email( $tag, $body ) {
        if( ! $tag ) {
            return false;
        }

        // Setup img shortcode regex
        $img_regex = get_shortcode_regex( array("$tag") );

        // Match regex pattern
        preg_match_all( '/'. $img_regex .'/s', $body, $matches );

        // For img tags matches the regex
        $img_tags = array();

        // Keys 2 = upload field name (ie: upload-file-1)
        if( array_key_exists( 2, $matches )) {
            foreach( $matches[2] as $index => $uploader_name ) {
              
                // Extract shortcode attributes
                $img_atts = shortcode_parse_atts( str_replace(']',' /]', $matches[0][$index] ) );
               
                // Get the tag & size attributes
                if( isset( $img_atts['img-preview'] ) && $img_atts['img-preview'] == 1 ) {
                    $img_tags['is_image'] = (int) $img_atts['img-preview'];
                    $img_tags['replaced_tag'] = $matches[0][$index];
                    if( isset( $img_atts['size'] ) ) {
                        $img_tags['size'] = explode('x', $img_atts['size'] );    
                    }
                }
            }
        }

        return $img_tags;
    }

    /**
    * Check if table exist
    */

    function dndmfu_cf7_check_table() {
        global $wpdb;
        $table = $wpdb->get_var( $wpdb->prepare("SHOW TABLES LIKE %s", $wpdb->prefix . dndmfu_cf7_table_name ) );
        return $table;
    }

    /**
    * Check multilingual plugin
    */

    function dndmfu_cf7_lang() {

        $lang = '';

        if( function_exists( 'pll_count_posts' ) ){
            $lang = pll_current_language();
        }elseif( function_exists('icl_object_id') ){
            $lang = ICL_LANGUAGE_CODE;
        }

        $wplang = get_option('WPLANG') ? get_option('WPLANG') : 'en_US';
        $lang = ( ( $lang && strpos( $wplang, $lang ) !== false ) || ( ! $lang ) ? '' : '_' . $lang );
        return apply_filters('dndmfu_cf7_lang', $lang );
    }

    /**
    * Fetch multi lingual text
    */

    function dnmfu_cf7_option( $option_name ){
        
        $lang = dndmfu_cf7_lang();
        
        $translated_text = get_option( $option_name );
        
        if( $lang ) {
            $translated_text = get_option( $option_name . $lang );
        }

        return $translated_text;
    }