<?php

namespace App\Services;

use App\Models\Archives\ArchivedRecord;
use Illuminate\Contracts\Pagination\LengthAwarePaginator;

class ArchivedRecordService
{
    /**
     * 아카이브 레코드 목록 조회 (페이지네이션)
     */
    public function getArchivedRecords(array $filters = [], int $perPage = 15): LengthAwarePaginator
    {
        $query = ArchivedRecord::query()
            ->with(['deletedByUser', 'relations'])
            ->withCount('relations');

        // 레코드 타입 필터
        if (! empty($filters['record_type'])) {
            $query->where('record_type', $filters['record_type']);
        }

        // 삭제자 필터
        if (! empty($filters['deleted_by'])) {
            $query->where('deleted_by', $filters['deleted_by']);
        }

        // 노트 유무 필터
        if (isset($filters['has_notes'])) {
            if ($filters['has_notes'] === 'yes' || $filters['has_notes'] === '1') {
                $query->whereNotNull('notes')->where('notes', '!=', '');
            } elseif ($filters['has_notes'] === 'no' || $filters['has_notes'] === '0') {
                $query->where(function ($q) {
                    $q->whereNull('notes')->orWhere('notes', '');
                });
            }
        }

        // 검색
        if (! empty($filters['search'])) {
            $search = $filters['search'];
            $query->where(function ($q) use ($search) {
                $q->where('record_type', 'like', "%{$search}%")
                    ->orWhere('notes', 'like', "%{$search}%")
                    ->orWhereRaw("JSON_EXTRACT(main_data, '$.name') LIKE ?", ["%{$search}%"])
                    ->orWhereRaw("JSON_EXTRACT(main_data, '$.title') LIKE ?", ["%{$search}%"]);
            });
        }

        // 정렬 (기본: 삭제일시 내림차순)
        $sortBy = $filters['sort_by'] ?? 'deleted_at';
        $sortDirection = $filters['sort_direction'] ?? 'desc';
        $query->orderBy($sortBy, $sortDirection);

        return $query->paginate($perPage);
    }

    /**
     * 특정 아카이브 레코드 조회
     */
    public function getArchivedRecordById(int $id): ?ArchivedRecord
    {
        return ArchivedRecord::with(['deletedByUser', 'relations'])
            ->find($id);
    }

    /**
     * 삭제자 목록 조회 (필터용)
     */
    public function getDeletedByUsers(): array
    {
        return ArchivedRecord::query()
            ->whereNotNull('deleted_by')
            ->with('deletedByUser:id,name')
            ->get()
            ->pluck('deletedByUser')
            ->filter()
            ->unique('id')
            ->values()
            ->toArray();
    }

    /**
     * 아카이브 통계
     */
    public function getStats(): array
    {
        return [
            'total' => ArchivedRecord::count(),
            'tenants' => ArchivedRecord::tenant()->count(),
            'users' => ArchivedRecord::user()->count(),
            'with_notes' => ArchivedRecord::whereNotNull('notes')
                ->where('notes', '!=', '')
                ->count(),
        ];
    }
}