<?php

namespace App\Services\System;

use App\Models\System\SystemRole;
use App\Services\BaseService;
use Illuminate\Pagination\LengthAwarePaginator;

/**
 * 系统角色服务类
 */
class SystemRoleService extends BaseService
{
    protected string $modelClass = SystemRole::class;

    /**
     * 获取系统角色列表
     */
    public function getList(array $params): LengthAwarePaginator
    {
        $query = SystemRole::query();

        // 搜索条件
        if (!empty($params['keyword'])) {
            $query->where(function ($q) use ($params) {
                $q->where('name', 'like', '%' . $params['keyword'] . '%')
                  ->orWhere('code', 'like', '%' . $params['keyword'] . '%');
            });
        }

        // 状态筛选
        if (isset($params['status'])) {
            $query->where('status', $params['status']);
        }

        // 角色类型筛选
        if (isset($params['type'])) {
            $query->where('type', $params['type']);
        }

        // 数据范围筛选
        if (isset($params['data_scope'])) {
            $query->where('data_scope', $params['data_scope']);
        }

        // 排序
        $query->orderBy('sort', 'asc')
              ->orderBy('id', 'desc');

        return $query->paginate($params['page_size'] ?? 15);
    }

    /**
     * 获取简单列表（用于下拉选择等）
     */
    public function getSimpleList(): array
    {
        return SystemRole::select('id', 'name', 'code')
            ->where('status', 0)
            ->orderBy('sort', 'asc')
            ->get()
            ->toArray();
    }

    /**
     * 创建前验证
     */
    protected function beforeCreate(array &$data): void
    {
        // 如果没有设置排序，自动设置为最大值+1
        if (!isset($data['sort'])) {
            $maxSort = SystemRole::max('sort') ?? 0;
            $data['sort'] = $maxSort + 1;
        }

        // 默认状态为正常
        if (!isset($data['status'])) {
            $data['status'] = 0;
        }

        // 默认数据范围为本部门数据权限
        if (!isset($data['data_scope'])) {
            $data['data_scope'] = 3;
        }
    }

    /**
     * 更新前验证
     */
    protected function beforeUpdate(array &$data, $model): void
    {
        // 处理数据范围部门IDs
        if (isset($data['data_scope_dept_ids']) && is_array($data['data_scope_dept_ids'])) {
            $data['data_scope_dept_ids'] = implode(',', $data['data_scope_dept_ids']);
        }
    }

    /**
     * 检查角色编码是否存在
     */
    public function checkCodeExists(string $code, ?int $excludeId = null): bool
    {
        $query = SystemRole::where('code', $code);

        if ($excludeId) {
            $query->where('id', '!=', $excludeId);
        }

        return $query->exists();
    }

    /**
     * 批量更新状态
     */
    public function batchUpdateStatus(array $ids, int $status): bool
    {
        return SystemRole::whereIn('id', $ids)->update(['status' => $status]) > 0;
    }
}