<?php
header('Content-Type: application/json');
require_once __DIR__ . '/../db/config.php';

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    echo json_encode(['success' => false, 'error' => 'Invalid method']);
    exit;
}

if (!isset($_FILES['photo']) || $_FILES['photo']['error'] !== UPLOAD_ERR_OK) {
    echo json_encode(['success' => false, 'error' => 'Upload failed']);
    exit;
}

$uploadDir = __DIR__ . '/../uploads/originals/';
$processedDir = __DIR__ . '/../uploads/processed/';
$fileName = time() . '_' . basename($_FILES['photo']['name']);
$targetFile = $uploadDir . $fileName;

if (move_uploaded_file($_FILES['photo']['tmp_name'], $targetFile)) {
    // In a real app, we would call an AI API here to remove background and swap.
    // For this MVP, we will simulate it by creating a "Luxury Edition" 
    // which is the original image with a subtle luxury filter/overlay.
    
    $processedFileName = 'luxury_' . $fileName;
    $processedPath = $processedDir . $processedFileName;
    
    // Simulate processing: just copy for now
    copy($targetFile, $processedPath);
    
    // To make it look "luxury", we could use GD library to add a filter if available
    if (extension_loaded('gd')) {
        $info = getimagesize($targetFile);
        $img = null;
        if ($info['mime'] == 'image/jpeg') $img = imagecreatefromjpeg($targetFile);
        elseif ($info['mime'] == 'image/png') $img = imagecreatefrompng($targetFile);
        elseif ($info['mime'] == 'image/webp') $img = imagecreatefromwebp($targetFile);

        if ($img) {
            // Apply a slight "luxury" warm/dark filter
            imagefilter($img, IMG_FILTER_CONTRAST, -5);
            imagefilter($img, IMG_FILTER_BRIGHTNESS, -10);
            imagefilter($img, IMG_FILTER_COLORIZE, 20, 10, -10, 20); // Warm gold tint
            
            if ($info['mime'] == 'image/jpeg') imagejpeg($img, $processedPath, 90);
            elseif ($info['mime'] == 'image/png') imagepng($img, $processedPath);
            elseif ($info['mime'] == 'image/webp') imagewebp($img, $processedPath);
            imagedestroy($img);
        }
    }

    // Persist to DB
    try {
        $db = db();
        $stmt = $db->prepare("INSERT INTO transformations (original_path, processed_path, style_id, status) VALUES (?, ?, ?, 'completed')");
        $stmt->execute([
            'uploads/originals/' . $fileName,
            'uploads/processed/' . $processedFileName,
            $_POST['style'] ?? 'default'
        ]);
    } catch (Exception $e) {
        // Silently continue if DB fails, but log it
        error_log($e->getMessage());
    }

    echo json_encode([
        'success' => true,
        'original_url' => 'uploads/originals/' . $fileName,
        'processed_url' => 'uploads/processed/' . $processedFileName
    ]);
} else {
    echo json_encode(['success' => false, 'error' => 'Could not save file']);
}