<?php
/**
 * admin/api/profile.php — Single-profile lookup from the profiles cache.
 * Returns cached kind-0 metadata for a given pubkey.
 *
 * Usage: profile.php?pubkey=<64-char-hex>
 * Returns: { "pubkey": "...", "name": "...", "display_name": "...",
 *             "best_name": "...", "picture": "...", "nip05": "...",
 *             "about": "...", "website": "...", "lud16": "..." }
 *           or { "error": "not found" } with HTTP 404 if no profile is cached.
 */
require_once __DIR__ . '/../lib/helpers.php';

$pubkey = trim($_GET['pubkey'] ?? '');
if (!preg_match('/^[0-9a-fA-F]{64}$/', $pubkey)) {
    http_response_code(400);
    json_response(['error' => 'Invalid pubkey']);
}

$pdo = db();
try {
    $stmt = $pdo->prepare(
        "SELECT pubkey, name, display_name, about, picture, banner,
                nip05, website, lud16, lud06
         FROM profiles WHERE pubkey = ?"
    );
    $stmt->execute([$pubkey]);
    $row = $stmt->fetch();
    if (!$row) {
        http_response_code(404);
        json_response(['error' => 'not found']);
    }
    $row['best_name'] = profile_display_name($row);
    json_response($row);
} catch (PDOException $e) {
    http_response_code(500);
    json_response(['error' => 'Database error']);
}