<?php

namespace App\Repositories\Admin\Log;

use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Facades\DB;

final class AdminAuditLogRepository
{
    private const TABLE = 'admin_audit_logs';

    public function paginate(array $filters, int $perPage = 30): LengthAwarePaginator
    {
        $q = DB::table(self::TABLE . ' as l')
            ->leftJoin('admin_users as au', 'au.id', '=', 'l.actor_admin_user_id')
            ->select([
                'l.id',
                'l.actor_admin_user_id',
                'l.action',
                'l.target_type',
                'l.target_id',
                'l.ip',
                'l.created_at',
                'au.email as actor_email',
                'au.name as actor_name',
            ]);

        // 기간
        if (!empty($filters['date_from'])) {
            $q->where('l.created_at', '>=', $filters['date_from'] . ' 00:00:00');
        }
        if (!empty($filters['date_to'])) {
            $q->where('l.created_at', '<=', $filters['date_to'] . ' 23:59:59');
        }

        // actor 검색 (email/name)
        $actorQ = trim((string)($filters['actor_q'] ?? ''));
        if ($actorQ !== '') {
            $like = '%' . $this->escapeLike($actorQ) . '%';
            $q->where(function ($qq) use ($like) {
                $qq->where('au.email', 'like', $like)
                    ->orWhere('au.name', 'like', $like);
            });
        }

        // action (prefix match)
        $action = trim((string)($filters['action'] ?? ''));
        if ($action !== '') {
            $q->where('l.action', 'like', $this->escapeLike($action) . '%');
        }

        // target_type (prefix match)
        $tt = trim((string)($filters['target_type'] ?? ''));
        if ($tt !== '') {
            $q->where('l.target_type', 'like', $this->escapeLike($tt) . '%');
        }

        // ip (prefix match)
        $ip = trim((string)($filters['ip'] ?? ''));
        if ($ip !== '') {
            $q->where('l.ip', 'like', $this->escapeLike($ip) . '%');
        }

        // ✅ 최신순
        $q->orderByDesc('l.created_at')->orderByDesc('l.id');

        return $q->paginate($perPage)->withQueryString();
    }

    public function findOne(int $id): ?array
    {
        $row = DB::table(self::TABLE . ' as l')
            ->leftJoin('admin_users as au', 'au.id', '=', 'l.actor_admin_user_id')
            ->select([
                'l.id',
                'l.actor_admin_user_id',
                'l.action',
                'l.target_type',
                'l.target_id',
                'l.before_json',
                'l.after_json',
                'l.ip',
                'l.user_agent',
                'l.created_at',
                'au.email as actor_email',
                'au.name as actor_name',
            ])
            ->where('l.id', $id)
            ->first();

        return $row ? (array)$row : null;
    }

    private function escapeLike(string $s): string
    {
        // MySQL LIKE escape (%, _)
        return str_replace(['\\', '%', '_'], ['\\\\', '\%', '\_'], $s);
    }
}