Luma Modify Video Callbacks

from flask import Flask, request, jsonify
import requests
import os
import json

app = Flask(__name__)

@app.route('/luma-modify-callback', methods=['POST'])
def handle_callback():
    data = request.json
    
    code = data.get('code')
    msg = data.get('msg')
    callback_data = data.get('data', {})
    task_id = callback_data.get('taskId')
    prompt_json = callback_data.get('promptJson')
    result_urls = callback_data.get('resultUrls', [])
    
    print(f"Received Luma video modification callback:")
    print(f"Task ID: {task_id}")
    print(f"Status: {code}, Message: {msg}")
    
    if code == 200:
        # Task completed successfully
        print("Luma video modification completed successfully")
        
        print(f"Task ID: {task_id}")
        print(f"Original Parameters: {prompt_json}")
        print(f"Generated Video URLs: {', '.join(result_urls)}")
        
        # Parse original parameters
        try:
            original_params = json.loads(prompt_json)
            print(f"Original Prompt: {original_params.get('prompt', 'N/A')}")
            print(f"Original Video URL: {original_params.get('videoUrl', 'N/A')}")
        except json.JSONDecodeError:
            print("Could not parse original parameters")
        
        # Download generated videos
        for index, url in enumerate(result_urls):
            try:
                filename = f"luma_result_{task_id}_{index + 1}.mp4"
                download_file(url, filename)
                print(f"Video {index + 1} downloaded as {filename}")
            except Exception as e:
                print(f"Video {index + 1} download failed: {e}")
                
    else:
        # Task failed
        print(f"Luma video modification failed: {msg}")
        
        # Log original parameters for debugging
        print(f"Original parameters: {prompt_json}")
        
        # Handle specific error cases
        print("Please check your input video and prompt, then try again")
    
    # Return 200 status code to confirm callback received
    return jsonify({'status': 'received'}), 200

def download_file(url, filename):
    """Download file from URL and save locally"""
    response = requests.get(url, stream=True)
    response.raise_for_status()
    
    os.makedirs('downloads', exist_ok=True)
    filepath = os.path.join('downloads', filename)
    
    with open(filepath, 'wb') as f:
        for chunk in response.iter_content(chunk_size=8192):
            f.write(chunk)

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=3000)

<?php
header('Content-Type: application/json');

// Get POST data
$input = file_get_contents('php://input');
$data = json_decode($input, true);

$code = $data['code'] ?? null;
$msg = $data['msg'] ?? '';
$callbackData = $data['data'] ?? [];
$taskId = $callbackData['taskId'] ?? '';
$promptJson = $callbackData['promptJson'] ?? '';
$resultUrls = $callbackData['resultUrls'] ?? [];

error_log("Received Luma video modification callback:");
error_log("Task ID: $taskId");
error_log("Status: $code, Message: $msg");

if ($code === 200) {
    // Task completed successfully
    error_log("Luma video modification completed successfully");
    
    error_log("Task ID: $taskId");
    error_log("Original Parameters: $promptJson");
    error_log("Generated Video URLs: " . implode(', ', $resultUrls));
    
    // Parse original parameters
    $originalParams = json_decode($promptJson, true);
    if ($originalParams) {
        error_log("Original Prompt: " . ($originalParams['prompt'] ?? 'N/A'));
        error_log("Original Video URL: " . ($originalParams['videoUrl'] ?? 'N/A'));
    }
    
    // Download generated videos
    foreach ($resultUrls as $index => $url) {
        try {
            $filename = "luma_result_{$taskId}_" . ($index + 1) . ".mp4";
            downloadFile($url, $filename);
            error_log("Video " . ($index + 1) . " downloaded as $filename");
        } catch (Exception $e) {
            error_log("Video " . ($index + 1) . " download failed: " . $e->getMessage());
        }
    }
    
} else {
    // Task failed
    error_log("Luma video modification failed: $msg");
    
    // Log original parameters for debugging
    error_log("Original parameters: $promptJson");
    
    // Handle specific error cases
    error_log("Please check your input video and prompt, then try again");
}

// Return 200 status code to confirm callback received
http_response_code(200);
echo json_encode(['status' => 'received']);

function downloadFile($url, $filename) {
    $downloadDir = 'downloads';
    if (!is_dir($downloadDir)) {
        mkdir($downloadDir, 0755, true);
    }
    
    $filepath = $downloadDir . '/' . $filename;
    
    $fileContent = file_get_contents($url);
    if ($fileContent === false) {
        throw new Exception("Failed to download file from URL");
    }
    
    $result = file_put_contents($filepath, $fileContent);
    if ($result === false) {
        throw new Exception("Failed to save file locally");
    }
}
?>