<?php
/**
 * Add SVG mime types to WordPress
 *
 * Allows you to upload SVG files to the media library like any other image.
 * Additionally provides a fix for WP 4.7.1 - 4.7.2 upload issues and for Avada theme.
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

/**
 * Add Mime Types
 */
function bodhi_svgs_upload_mimes( $mimes = array() ) {

	global $bodhi_svgs_options;
	
	$allowed_roles_array = array();
	$is_role_allowed = array();
	
	if( !isset($bodhi_svgs_options['restrict']) ) {
	    return $mimes;
	}
	
	$allowed_roles_array = (array) $bodhi_svgs_options['restrict'];
	
	$user = wp_get_current_user();
 
    $current_user_roles = ( array ) $user->roles;
    
    $is_role_allowed = array_intersect($allowed_roles_array, $current_user_roles);
	
	if( empty($is_role_allowed) ) {
	    return $mimes;
	}
	else {
		// allow SVG file upload
		$mimes['svg'] = 'image/svg+xml';
		$mimes['svgz'] = 'image/svg+xml';
		return $mimes;
	}

}
add_filter( 'upload_mimes', 'bodhi_svgs_upload_mimes', 99 );

/**
 * Check Mime Types
 */
function bodhi_svgs_upload_check( $checked, $file, $filename, $mimes ) {

	if ( ! $checked['type'] ) {

		$check_filetype		= wp_check_filetype( $filename, $mimes );
		$ext				= $check_filetype['ext'];
		$type				= $check_filetype['type'];
		$proper_filename	= $filename;

		if ( $type && 0 === strpos( $type, 'image/' ) && $ext !== 'svg' ) {
			$ext = $type = false;
		}

		$checked = compact( 'ext','type','proper_filename' );
	}

	return $checked;

}
add_filter( 'wp_check_filetype_and_ext', 'bodhi_svgs_upload_check', 10, 4 );

/**
 * Mime Check fix for WP 4.7.1 / 4.7.2
 *
 * Fixes uploads for these 2 version of WordPress.
 * Issue was fixed in 4.7.3 core.
 */
function bodhi_svgs_allow_svg_upload( $data, $file, $filename, $mimes ) {

	global $wp_version;
	if ( $wp_version !== '4.7.1' || $wp_version !== '4.7.2' ) {
		return $data;
	}

	$filetype = wp_check_filetype( $filename, $mimes );

	return [
		'ext'				=> $filetype['ext'],
		'type'				=> $filetype['type'],
		'proper_filename'	=> $data['proper_filename']
	];

}
add_filter( 'wp_check_filetype_and_ext', 'bodhi_svgs_allow_svg_upload', 10, 4 );