<?php

declare(strict_types=1);

require_once __DIR__ . '/monitor-lib.php';

function loadStatusSnapshot(): array
{
    $checksData = readJsonFile(privateDataDir() . '/last-checks.json');
    $bokaData = readJsonFile(privateDataDir() . '/boka-status.json');

    return [
        'checks_data' => $checksData,
        'boka_data' => $bokaData,
    ];
}

/** @param array{checks_data: ?array, boka_data: ?array} $snapshot */
function formatPublicStatus(array $snapshot): array
{
    $checksData = $snapshot['checks_data'];
    $bokaData = $snapshot['boka_data'];

    if ($checksData === null && $bokaData === null) {
        return [
            'initialized' => false,
            'message' => 'Monitoring not initialized',
            'updated_at' => null,
            'duration_ms' => null,
            'checks' => [],
            'boka' => null,
        ];
    }

    $checks = [];
    foreach ($checksData['checks'] ?? [] as $check) {
        if (!is_array($check)) {
            continue;
        }

        $name = (string) ($check['name'] ?? '');
        if ($name === '' || str_starts_with($name, '_')) {
            continue;
        }

        $status = (string) ($check['status'] ?? 'down');
        if (!in_array($status, ['ok', 'warn', 'down'], true)) {
            $status = 'down';
        }

        $message = $check['message'] ?? null;
        if (is_string($message) && $message !== '') {
            $message = sanitizeError($message);
        } else {
            $message = null;
        }

        $checks[] = [
            'name' => $name,
            'status' => $status,
            'message' => $message,
            'response_ms' => isset($check['response_ms']) ? (int) $check['response_ms'] : null,
            'ssl_days_remaining' => isset($check['ssl_days_remaining']) ? (int) $check['ssl_days_remaining'] : null,
            'checked_at' => isset($check['checked_at']) && is_string($check['checked_at']) ? $check['checked_at'] : null,
        ];
    }

    $boka = null;
    if ($bokaData !== null) {
        $lastPush = $bokaData['last_push'] ?? null;
        $ageMinutes = null;
        if (is_string($lastPush) && $lastPush !== '') {
            $lastPushAt = strtotime($lastPush) ?: 0;
            if ($lastPushAt > 0) {
                $ageMinutes = (int) floor((time() - $lastPushAt) / 60);
            }
        }

        $boka = [
            'host' => isset($bokaData['host']) && is_string($bokaData['host']) ? $bokaData['host'] : 'boka',
            'last_push' => is_string($lastPush) ? $lastPush : null,
            'age_minutes' => $ageMinutes,
            'disk_percent' => isset($bokaData['disk_percent']) ? (int) $bokaData['disk_percent'] : null,
            'mem_available_mb' => isset($bokaData['mem_available_mb']) ? (int) $bokaData['mem_available_mb'] : null,
            'containers_running' => isset($bokaData['containers_running']) ? (int) $bokaData['containers_running'] : null,
            'containers_unhealthy' => isset($bokaData['containers_unhealthy']) ? (int) $bokaData['containers_unhealthy'] : null,
            'backup_last_success' => isset($bokaData['backup_last_success']) && is_string($bokaData['backup_last_success'])
                ? $bokaData['backup_last_success']
                : null,
        ];
    }

    return [
        'initialized' => $checksData !== null || $bokaData !== null,
        'message' => null,
        'updated_at' => isset($checksData['updated_at']) && is_string($checksData['updated_at'])
            ? $checksData['updated_at']
            : null,
        'duration_ms' => isset($checksData['duration_ms']) ? (int) $checksData['duration_ms'] : null,
        'checks' => $checks,
        'boka' => $boka,
    ];
}