<?php

// File: app/Helpers/Uuid_helper.php

if (!function_exists('generate_uuid')) {
    function generate_uuid($version = 4, $format = 'hex')
    {
        $data = random_bytes(16);
        // echo $data.'<br>';
            // Set version to 0100
        $data[6] = chr(ord($data[6]) & 0x0f | 0x40);
        // Set bits 6-7 to 10
        $data[8] = chr(ord($data[8]) & 0x3f | 0x80);

        // Output the 36 character UUID.
        $uuid = vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
        return $uuid;
    }
}

if (!function_exists('change_date_format')) {
    
    function change_date_format($data, $source_format, $output_format)
    {
        // echo $data, $source_format, $output_format;return true;
        try {
            // Create DateTime object with the source format
            $dateTime = DateTime::createFromFormat($source_format, $data);

            // Check if the DateTime object is created successfully
            if ($dateTime === false) {
                throw new Exception('Invalid date or format');
            }
            // Format the DateTime object with the output format
            $formattedDate = $dateTime->format($output_format);

            return $formattedDate;
        } catch (Exception $e) {
            // Handle the exception (e.g., log it, show a user-friendly message)
            return "Error: " . $e->getMessage();
            return $data;
        }
    }
}

if (!function_exists('fileUpload')) {
    
    function fileUpload($fileToUpload, $imageDetails = null)
    {
        $fileName = $fileToUpload->getClientName();
        if ($fileToUpload !== NULL && $fileName !== "") {
            if ($fileToUpload->isValid() && !$fileToUpload->hasMoved()) {
                // Check if the image exists in the upload folder
                $existingImagePath = ROOTPATH . 'public/uploads/' . $imageDetails; // Adjust filename field based on your database structure
                
                if ($imageDetails !== null && file_exists($existingImagePath)) {
                    // If the image exists, delete it
                    unlink($existingImagePath);
                }
        
                // Move the new image to the upload folder
                $fileToUpload->move(ROOTPATH . 'public/uploads', $fileName);
            }
        } else {
            $fileName = "";
        }
        
        return $fileName;
        
    }
}