<?php

namespace App\Repositories\Admin\Log;

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

final class MemberLoginLogRepository
{
    public function paginateByYear(int $year, array $filters, int $perPage = 30): LengthAwarePaginator
    {
        $table = 'mem_login_' . $year;

        $q = DB::table($table . ' as l')
            ->select([
                'l.seq',
                'l.mem_no',
                'l.sf',
                'l.conn',
                'l.ip4',
                'l.ip4_c',
                'l.error_code',
                'l.dt_reg',
                'l.platform',
                'l.browser',
            ]);

        // 기간(dt_reg)
        if (!empty($filters['date_from'])) {
            $q->where('l.dt_reg', '>=', $filters['date_from'] . ' 00:00:00');
        }
        if (!empty($filters['date_to'])) {
            $q->where('l.dt_reg', '<=', $filters['date_to'] . ' 23:59:59.999999');
        }

        // mem_no
        if (($filters['mem_no'] ?? null) !== null) {
            $q->where('l.mem_no', (int)$filters['mem_no']);
        }

        // 성공/실패
        if (!empty($filters['sf'])) {
            $q->where('l.sf', $filters['sf']);
        }

        // 접속경로 1/2
        if (!empty($filters['conn'])) {
            $q->where('l.conn', $filters['conn']);
        }

        // ip prefix
        $ip4 = trim((string)($filters['ip4'] ?? ''));
        if ($ip4 !== '') {
            $q->where('l.ip4', 'like', $this->escapeLike($ip4) . '%');
        }

        $ip4c = trim((string)($filters['ip4_c'] ?? ''));
        if ($ip4c !== '') {
            $q->where('l.ip4_c', 'like', $this->escapeLike($ip4c) . '%');
        }

        // error_code
        $err = trim((string)($filters['error_code'] ?? ''));
        if ($err !== '') {
            $q->where('l.error_code', $err);
        }

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

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

        $q->orderByDesc('l.dt_reg')->orderByDesc('l.seq');

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

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