<?php

namespace App\Services\System;

use App\Models\System\Log;
use Illuminate\Support\Facades\Auth;

class LogService
{
    public function create(array $data): Log
    {
        return Log::create($data);
    }

    public function getList(array $params): array
    {
        $query = $this->buildQuery($params);

        $query->orderBy('created_at', 'desc');

        $pageSize = $params['page_size'] ?? 20;
        $list = $query->paginate($pageSize);

        return [
            'list' => $list->items(),
            'total' => $list->total(),
            'page' => $list->currentPage(),
            'page_size' => $list->perPage(),
        ];
    }

    /**
     * 构建查询（用于导出等场景）
     *
     * @param  array  $params
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function getListQuery(array $params)
    {
        return $this->buildQuery($params);
    }

    /**
     * 构建基础查询
     *
     * @param  array  $params
     * @return \Illuminate\Database\Eloquent\Builder
     */
    protected function buildQuery(array $params)
    {
        $query = Log::query()->with('user:id,name,username');

        if (!empty($params['user_id'])) {
            $query->where('user_id', $params['user_id']);
        }

        if (!empty($params['username'])) {
            $query->where('username', 'like', '%' . $params['username'] . '%');
        }

        if (!empty($params['module'])) {
            $query->where('module', $params['module']);
        }

        if (!empty($params['action'])) {
            $query->where('action', $params['action']);
        }

        if (!empty($params['status'])) {
            $query->where('status', $params['status']);
        }

        if (!empty($params['start_date']) && !empty($params['end_date'])) {
            $query->whereBetween('created_at', [$params['start_date'], $params['end_date']]);
        }

        if (!empty($params['ip'])) {
            $query->where('ip', 'like', '%' . $params['ip'] . '%');
        }

        return $query;
    }

    public function getById(int $id): ?Log
    {
        return Log::with('user')->find($id);
    }

    public function delete(int $id): bool
    {
        $log = Log::findOrFail($id);
        return $log->delete();
    }

    public function clearLogs(string $days = '30'): bool
    {
        Log::where('created_at', '<', now()->subDays($days))->delete();
        return true;
    }

    public function batchDelete(array $ids): bool
    {
        Log::whereIn('id', $ids)->delete();
        return true;
    }

    public function getStatistics(array $params = []): array
    {
        $query = Log::query();

        if (!empty($params['start_date']) && !empty($params['end_date'])) {
            $query->whereBetween('created_at', [$params['start_date'], $params['end_date']]);
        }

        $total = $query->count();
        $successCount = (clone $query)->where('status', 'success')->count();
        $errorCount = (clone $query)->where('status', 'error')->count();

        return [
            'total' => $total,
            'success' => $successCount,
            'error' => $errorCount,
        ];
    }
}