<?php
declare(strict_types=1);

require_once __DIR__ . '/../tetris_data.php';

header('Content-Type: application/json; charset=utf-8');
header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');

function tetrisApiScoreRow(array $run): array
{
    $timestamp = strtotime((string) ($run['created_at'] ?? ''));

    return [
        'id' => (int) ($run['id'] ?? 0),
        'player_name' => (string) ($run['player_name'] ?? ''),
        'score' => (int) ($run['score'] ?? 0),
        'lines_cleared' => (int) ($run['lines_cleared'] ?? 0),
        'level_reached' => (int) ($run['level_reached'] ?? 1),
        'duration_seconds' => (int) ($run['duration_seconds'] ?? 0),
        'created_at_iso' => $timestamp ? gmdate(DATE_ATOM, $timestamp) : null,
    ];
}

try {
    $leaderboard = array_map('tetrisApiScoreRow', tetrisFetchLeaderboard(8));
    $recentRuns = array_map('tetrisApiScoreRow', tetrisFetchRecent(5));
    $bestRun = tetrisFetchBestScore();

    echo json_encode([
        'success' => true,
        'updated_at' => gmdate(DATE_ATOM),
        'best_run' => $bestRun ? tetrisApiScoreRow($bestRun) : null,
        'leaderboard' => $leaderboard,
        'recent_runs' => $recentRuns,
    ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
} catch (Throwable $e) {
    http_response_code(500);
    echo json_encode([
        'success' => false,
        'error' => 'Unable to load leaderboard right now.',
    ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
}