<?php
function upload_event_files($current, $type, $uploadedFile, $key=-1){
    $destination = origin_folders($type);
    if( (is_dir($destination) && is_writable($destination))) {
        //this happens when uploading an array of files, we need to get the exact file to be uploaded from the tray
        if($key>=0){
            $uploadedFile = array(
                "name" => $uploadedFile["name"][$key],
                "size" => $uploadedFile["size"][$key],
                "tmp_name" => $uploadedFile["tmp_name"][$key],
                "error" => $uploadedFile["error"][$key],
                "type" => $uploadedFile["type"][$key]
            );
        }
       
        if($type=="sponsors"){ //for sponsor pictures
	        $allowed_file_ext = array("jpeg", "gif", "jpg", "png");
	        $allowed_mime_types = array("image");
    	} else if($type=="events") { //for event attachments
    		$allowed_file_ext = array("mp3", "mp4", "png", "jpeg", "gif", "jpg");
            $allowed_mime_types = array("audio", "video", "image");
    	}

        $tmp = explode(".", $uploadedFile["name"] );
        $file_ext = $tmp[countVal($tmp)-1];
        $rename = generate_random_keys(20).'.'.$file_ext;
        $dest_path = $destination.$rename;

        if ($uploadedFile['error'] !== UPLOAD_ERR_OK) {
            output_to_json($current, array(
                "mtype" => "error" , 
                "message" => $current->lang->line("upload_error_code") .$uploadedFile['error']
            ));
        } else if(!is_uploaded_file($uploadedFile['tmp_name'])) {
            output_to_json($current, array(
                "mtype" => "warning" , 
                "message" => "Possible file upload attack from : ".$uploadedFile['tmp_name']
            ));
        } else if(!in_array(strtolower($file_ext), $allowed_file_ext) || !in_array(current( explode("/",$uploadedFile['type'])), $allowed_mime_types)) {
            output_to_json($current, array(
                "mtype" => "warning" , 
                "message" => "The file you are uploading is not allowed!"
            ));
        } else if( move_uploaded_file($uploadedFile['tmp_name'], $dest_path) ) {

            return array( 
                "validSize" =>  getImageRatios($uploadedFile,$file_ext,$dest_path),
                "file_name" =>  $rename, 
                "file_size" => $uploadedFile['size'] 
            ); 
            //process upload

        } else {
            output_to_json($current, array(
                "mtype" => "error" , 
                "message" => "Upload failed! Try again later." 
            ));
        }
    } else {
        output_to_json($current, array(
            "mtype" => "warning" , 
            "message" => "Upload destination directory is not writtable." 
        ));
    }
}

/**
 * get Image ratios return "True" if ration Heigh width is less than expected desire height or width
 *
 * @param array $uploadedFile
 * @param string $file_ext
 * @param string $dest_path
 * @return bool
 */
function getImageRatios($uploadedFile,$file_ext,$dest_path){
    
    $allowed_file_ext = array("jpeg", "gif", "jpg", "png");
    $allowed_mime_types = array("image");

    if(!in_array(strtolower($file_ext), $allowed_file_ext) || !in_array(current( explode("/",$uploadedFile['type'])), $allowed_mime_types)) {
        return [ 
            "isInValid" => false,
            "message" => "File extension for ration compare should be jpg,gif,jpeg,png" 
        ];
    }

    if($dest_path == null || empty($dest_path)){
        return [ 
            "isInValid" => false,
            "message" => "Destination path is empty!" 
        ];
    }

    list($width, $height) = getimagesize($dest_path);

    if((int)$width < DESIRED_IMAGE_WIDTH && (int)$height < DESIRED_IMAGE_HEIGHT){
        return [
            "isInValid" => true,
            "message" => "Ratio should be: ".DESIRED_IMAGE_WIDTH.'x'.DESIRED_IMAGE_HEIGHT,
            "info"    => $width.'x'.$height
        ];
    }

    return ["isInValid" => false];
}