Avatar.php

<?php
/* "Avatar.php" */

header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers: Content-Type, Origin, Accept");
header("Access-Control-Allow-Methods: GET, OPTIONS");

ini_set('display_errors', '0');
error_reporting(0);

ob_clean(); // Clear output buffer just in case
header_remove(); // Remove any previously set headers

include_once("{$_SERVER['DOCUMENT_ROOT']}/Av-Gen.php");

include_once("{$_SERVER['DOCUMENT_ROOT']}/Url Check Class.php");

$urlCheck = new UrlCheckClass(['author', 'audience', 'type', 'format'], false);
$urlCheck->validate();
$get = $urlCheck->queryArray;

$root = "{$_SERVER['DOCUMENT_ROOT']}/../nsfz-author-cache/authors/images";
$author = basename($get['author'] ?? 'Various');
$audience = $get['audience'] ?? '';
$format = $get['format'] ?? '';
$formatPath = ($format !== '') ? "/$format" : '';

if (!preg_match('/^[a-zA-Z0-9 _-]+$/', $author)) {
    serveFallback("$root/Various.png", 404);
}

$audience = empty($audience) ? "Under21" : $audience;
$audience = $audience === "MA-21" ? "MA-21" : "Under21";

$searchPaths = [
    "",
    "/$audience",
    "/vods",
    "/Under21",
    "/MA-21"
];

foreach ($searchPaths as $folder) {
    $path = "$root$folder/$author.png";
    if (!file_exists($path)) {
        error_log("Avatar not found: $path");
    }
    if (is_file($path)) {
        serveProcessedImage($path);
    }
}

serveFallback("$root/Various.png");

// Serve a 72x72 processed image with background fill
function serveProcessedImage(string $path): void
{
    global $root;

    [$srcW, $srcH] = getimagesize($path);
    $src = @imagecreatefrompng($path);
    if (!$src) {
        serveFallback("$root/Various.png", 500);
    }

    imagealphablending($src, false);
    imagesavealpha($src, true);

    if ($srcW === 72 && $srcH === 72) {
        serveDirect($src);
    }

    // Create transparent 72x72 canvas
    $canvas = imagecreatetruecolor(72, 72);
    imagealphablending($canvas, false);
    imagesavealpha($canvas, true);
    $transparent = imagecolorallocatealpha($canvas, 0, 0, 0, 127);
    imagefilledrectangle($canvas, 0, 0, 71, 71, $transparent);

    // Scale to fit (preserving aspect ratio)
    $scale = min(72 / $srcW, 72 / $srcH);
    $dstW = (int) round($srcW * $scale);
    $dstH = (int) round($srcH * $scale);
    $dstX = (int) ((72 - $dstW) / 2);
    $dstY = (int) ((72 - $dstH) / 2);

    imagecopyresampled(
        $canvas, $src,
        $dstX, $dstY, 0, 0,
        $dstW, $dstH,
        $srcW, $srcH
    );

    serveDirect($canvas);
}

// Serve raw PNG from GD
function serveDirect($gdImage): void
{
    http_response_code(200);
    header('Content-Type: image/png');
    imagepng($gdImage);
    imagedestroy($gdImage);
    exit;
}

// Serve fallback image as-is
function serveFallback(string $path, int $code = 200): void
{
    if (!is_file($path)) {
        http_response_code(404);
        exit;
    }
    http_response_code($code);
    header('Content-Type: image/png');
    header('Content-Length: ' . filesize($path));
    readfile($path);
    exit;
}