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Viewing: pwa-icon.php

<?php
// Dynamic PWA icon generator: draws a simple orange car icon as a square PNG.
$size = isset($_GET['size']) ? (int) $_GET['size'] : 512;
$allowed = [128, 144, 192, 256, 384, 512];
if (!in_array($size, $allowed, true)) {
    $size = 512;
}

// If GD is not available, return a 1x1 transparent PNG as fallback
if (!extension_loaded('gd')) {
    $png = base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8Xw8AAs8Bq0u5H1kAAAAASUVORK5CYII=');
    header('Content-Type: image/png');
    header('Cache-Control: public, max-age=31536000, immutable');
    echo $png;
    exit;
}

// Check if there is a custom logo in the database
$customLogoAbsPath = null;
try {
    require_once __DIR__ . '/../app/config/database.php';
    $pdo = \App\Config\Database::getConnection();
    $stmt = $pdo->query('SELECT logo FROM configuraciones ORDER BY id_config DESC LIMIT 1');
    if ($stmt) {
        $row = $stmt->fetch(PDO::FETCH_ASSOC);
        if ($row && !empty($row['logo'])) {
            $logoRelative = ltrim($row['logo'], '/');
            // Try multiple possible paths for compatibility
            $candidates = [
                __DIR__ . '/' . $logoRelative,                          // public/assets/uploads/...
                dirname(__DIR__) . '/public/' . $logoRelative,          // carrental/public/assets/uploads/...
                dirname(__DIR__) . '/' . $logoRelative,                 // carrental/assets/uploads/...
            ];
            foreach ($candidates as $candidate) {
                if (is_file($candidate)) {
                    $customLogoAbsPath = $candidate;
                    break;
                }
            }
        }
    }
} catch (Exception $e) {
    // Fallback to drawing the default car if DB fails
}

if ($customLogoAbsPath) {
    $ext = strtolower(pathinfo($customLogoAbsPath, PATHINFO_EXTENSION));
    $sourceImg = null;
    if ($ext === 'png') {
        $sourceImg = @imagecreatefrompng($customLogoAbsPath);
    } elseif ($ext === 'jpg' || $ext === 'jpeg') {
        $sourceImg = @imagecreatefromjpeg($customLogoAbsPath);
    } elseif ($ext === 'webp') {
        $sourceImg = @imagecreatefromwebp($customLogoAbsPath);
    }
    
    if ($sourceImg) {
        $srcW = imagesx($sourceImg);
        $srcH = imagesy($sourceImg);
        $destImg = imagecreatetruecolor($size, $size);
        imagesavealpha($destImg, true);
        $transparent = imagecolorallocatealpha($destImg, 0, 0, 0, 127);
        imagefill($destImg, 0, 0, $transparent);
        
        // Calculate aspect ratio preserving dimensions
        $ratio = min($size / $srcW, $size / $srcH);
        $newW = (int)round($srcW * $ratio);
        $newH = (int)round($srcH * $ratio);
        $dstX = (int)round(($size - $newW) / 2);
        $dstY = (int)round(($size - $newH) / 2);
        
        imagecopyresampled($destImg, $sourceImg, $dstX, $dstY, 0, 0, $newW, $newH, $srcW, $srcH);
        header('Content-Type: image/png');
        header('Cache-Control: no-cache, must-revalidate');
        imagepng($destImg);
        imagedestroy($destImg);
        imagedestroy($sourceImg);
        exit;
    }
}

$img = imagecreatetruecolor($size, $size);
imagesavealpha($img, true);
$transparent = imagecolorallocatealpha($img, 0, 0, 0, 127);
imagefill($img, 0, 0, $transparent);

// Colors
$orange = imagecolorallocate($img, 249, 115, 22); // #f97316
$orangeDark = imagecolorallocate($img, 194, 65, 12); // #c2410c
$black = imagecolorallocate($img, 20, 20, 24);
$gray = imagecolorallocate($img, 230, 232, 240);

// Scale helper
$S = function ($v) use ($size) { return (int) round($v * $size); };

// Car body (rounded rectangle)
$left = $S(0.12); $top = $S(0.42); $right = $S(0.88); $bottom = $S(0.70); $radius = $S(0.10);
// Draw rounded rectangle filled
imagefilledrectangle($img, $left + $radius, $top, $right - $radius, $bottom, $orange);
imagefilledrectangle($img, $left, $top + $radius, $right, $bottom - $radius, $orange);
imagefilledellipse($img, $left + $radius, $top + $radius, $radius * 2, $radius * 2, $orange);
imagefilledellipse($img, $right - $radius, $top + $radius, $radius * 2, $radius * 2, $orange);
imagefilledellipse($img, $left + $radius, $bottom - $radius, $radius * 2, $radius * 2, $orange);
imagefilledellipse($img, $right - $radius, $bottom - $radius, $radius * 2, $radius * 2, $orange);

// Roof (trapezoid)
$roof = [
    $S(0.32), $S(0.30),
    $S(0.68), $S(0.30),
    $S(0.80), $S(0.42),
    $S(0.20), $S(0.42),
];
imagefilledpolygon($img, $roof, 4, $orange);

// Split line between body and roof (dark accent)
imageline($img, $S(0.20), $S(0.42), $S(0.80), $S(0.42), $orangeDark);

// Windows (light gray)
$win = [
    $S(0.36), $S(0.32),
    $S(0.64), $S(0.32),
    $S(0.72), $S(0.41),
    $S(0.28), $S(0.41),
];
imagefilledpolygon($img, $win, 4, $gray);

// Wheels
$wheelR = $S(0.10);
imagefilledellipse($img, $S(0.30), $S(0.72), $wheelR * 2, $wheelR * 2, $black);
imagefilledellipse($img, $S(0.70), $S(0.72), $wheelR * 2, $wheelR * 2, $black);

header('Content-Type: image/png');
header('Cache-Control: no-cache, must-revalidate');
imagepng($img);
imagedestroy($img);
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