<?php
// avatar.php
session_start();
require_once 'config/db.php';

// Get CID from GET parameter or fallback to session
$cid = $_GET['cid'] ?? ($_SESSION['cid'] ?? '');
$name = $_GET['name'] ?? ($_SESSION['fullname'] ?? 'User');

$fallback_url = 'https://ui-avatars.com/api/?name=' . urlencode($name) . '&background=0F766E&color=fff';

if (empty($cid)) {
    header('Location: ' . $fallback_url);
    exit;
}

try {
    $stmt = $pdo_hos->prepare("SELECT HR_IMAGE FROM hr_person WHERE HR_CID = :cid LIMIT 1");
    $stmt->execute(['cid' => $cid]);
    $row = $stmt->fetch(PDO::FETCH_ASSOC);

    if ($row && !empty($row['HR_IMAGE'])) {
        // We have an image blob
        $image_data = $row['HR_IMAGE'];
        
        // Output appropriate headers
        // Assuming it's typically JPEG or PNG. Use finfo to get mime if possible, or fallback to jpeg.
        $finfo = new finfo(FILEINFO_MIME_TYPE);
        $mime = $finfo->buffer($image_data);
        
        if (!$mime || $mime == 'application/octet-stream') {
            $mime = 'image/jpeg';
        }
        
        header("Content-Type: " . $mime);
        header("Content-Length: " . strlen($image_data));
        // Add caching headers
        header("Cache-Control: public, max-age=86400");
        
        echo $image_data;
        exit;
    }
} catch (PDOException $e) {
    // Silently fallback on database error
}

// If no image found or error, redirect to ui-avatars
header('Location: ' . $fallback_url);
exit;
?>