<?php
/**
 * PHP Proxy for Python Flask Backend
 * Use this when hosting frontend on MAMP
 */

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, POST, DELETE, OPTIONS');
header('Access-Control-Allow-Headers: Content-Type');

// Handle preflight requests
if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
    http_response_code(200);
    exit;
}

// Python backend URL
$PYTHON_BACKEND = 'http://localhost:5000/api';

// Get the endpoint from the request
$endpoint = isset($_GET['endpoint']) ? $_GET['endpoint'] : '';

// Build full URL
$url = $PYTHON_BACKEND . '/' . $endpoint;

// Initialize cURL
$ch = curl_init($url);

// Set options based on request method
$method = $_SERVER['REQUEST_METHOD'];

switch ($method) {
    case 'GET':
        curl_setopt($ch, CURLOPT_HTTPGET, true);
        break;

    case 'POST':
        curl_setopt($ch, CURLOPT_POST, true);

        // Check if it's a file upload
        if (isset($_FILES['file'])) {
            $file = $_FILES['file'];
            $cfile = new CURLFile($file['tmp_name'], $file['type'], $file['name']);
            curl_setopt($ch, CURLOPT_POSTFIELDS, ['file' => $cfile]);
        } else {
            // JSON data
            $json = file_get_contents('php://input');
            curl_setopt($ch, CURLOPT_POSTFIELDS, $json);
            curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
        }
        break;

    case 'DELETE':
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
        break;
}

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

// Execute request
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$contentType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);

curl_close($ch);

// Set response headers
http_response_code($httpCode);
if ($contentType) {
    header('Content-Type: ' . $contentType);
}

// Output response
echo $response;
?>