<?php
namespace app\models;

use core\base\Model;

/**
 * 员工工位权限模型
 */
class EmployeePermission extends Model
{
    protected $table = 'employee_station_permission';

    /**
     * 获取某员工所有工位权限（返回 station_type => is_allowed 的键值对）
     */
    public function getByEmployee($employeeId)
    {
        $rows = $this->where(['employee_id = :eid'], [':eid' => $employeeId])->fetchAll();
        $permissions = [];
        foreach ($rows as $row) {
            $permissions[$row['station_type']] = (int)$row['is_allowed'];
        }
        return $permissions;
    }

    /**
     * 检查员工是否有某个工位的访问权限
     * 超级管理员和管理员始终返回 true
     */
    public function canAccess($employeeId, $role, $stationType)
    {
        // 超级管理员和管理员拥有所有工位权限
        if ($role === \core\base\Controller::ROLE_SUPER_ADMIN || $role === \core\base\Controller::ROLE_ADMIN) {
            return true;
        }

        $row = $this->where([
            'employee_id = :eid AND station_type = :stype'
        ], [
            ':eid' => $employeeId,
            ':stype' => $stationType
        ])->fetch();

        // 如果没配置过权限，默认允许访问
        if (!$row) {
            return true;
        }

        return (int)$row['is_allowed'] === 1;
    }

    /**
     * 获取某员工允许访问的工位类型列表
     */
    public function getAllowedStations($employeeId)
    {
        $rows = $this->where([
            'employee_id = :eid AND is_allowed = 1'
        ], [':eid' => $employeeId])->fetchAll();

        return array_column($rows, 'station_type');
    }

    /**
     * 批量设置员工工位权限
     * @param int $employeeId 员工ID
     * @param array $permissions 格式：['station_type' => 1/0, ...]
     */
    public function savePermissions($employeeId, $permissions)
    {
        // 先删除旧权限
        $this->where(['employee_id = :eid'], [':eid' => $employeeId])->deleteWhere();

        // 批量插入新权限
        foreach ($permissions as $stationType => $isAllowed) {
            $this->add([
                'employee_id' => $employeeId,
                'station_type' => $stationType,
                'is_allowed' => $isAllowed ? 1 : 0,
            ]);
        }

        return true;
    }

    /**
     * 删除某员工所有权限记录
     */
    public function deleteByEmployee($employeeId)
    {
        return $this->where(['employee_id = :eid'], [':eid' => $employeeId])->deleteWhere();
    }
}