import { logger } from '../utils/logger';

export enum Role {
  ADMIN = 'ADMIN',
  MANAGER = 'MANAGER',
  OPERATOR = 'OPERATOR',
  FINANCE = 'FINANCE',
  SOURCING = 'SOURCING',
  LOGISTICS = 'LOGISTICS',
  ANALYST = 'ANALYST'
}

export interface Permission {
  id: string;
  name: string;
  description: string;
  resource: string;
  action: string;
}

export interface RolePermission {
  role: Role;
  permission: string; // permission id
}

export interface UserRole {
  userId: string;
  role: Role;
  tenantId: string;
  shopId: string;
}

export interface RBACCheckResult {
  allowed: boolean;
  role: Role;
  permission: string;
  resource: string;
  action: string;
}

export class RBACService {
  /**
   * 初始化数据库表
   */
  static async initTable() {
    logger.info('🚀 RBACService table initialized');
    // 这里可以添加数据库表初始化逻辑
  }

  /**
   * 检查权限
   */
  static async checkPermission(userId: string, resource: string, action: string, tenantId: string, shopId: string): Promise<RBACCheckResult> {
    logger.info(`[RBACService] Checking permission for user: ${userId}, resource: ${resource}, action: ${action}`, { tenantId, shopId });
    
    // 这里可以添加权限检查的逻辑
    // 模拟检查结果
    const allowed = true;
    const role = Role.OPERATOR;
    const permission = 'perm_' + resource + '_' + action;
    
    return {
      allowed,
      role,
      permission,
      resource,
      action
    };
  }

  /**
   * 分配角色
   */
  static async assignRole(userId: string, role: Role, tenantId: string, shopId: string): Promise<boolean> {
    logger.info(`[RBACService] Assigning role: ${role} to user: ${userId}`, { tenantId, shopId });
    // 这里可以添加分配角色的逻辑
    return true;
  }

  /**
   * 移除角色
   */
  static async removeRole(userId: string, role: Role, tenantId: string, shopId: string): Promise<boolean> {
    logger.info(`[RBACService] Removing role: ${role} from user: ${userId}`, { tenantId, shopId });
    // 这里可以添加移除角色的逻辑
    return true;
  }

  /**
   * 获取用户角色
   */
  static async getUserRoles(userId: string, tenantId: string, shopId: string): Promise<Role[]> {
    logger.info(`[RBACService] Getting roles for user: ${userId}`, { tenantId, shopId });
    // 这里可以添加获取用户角色的逻辑
    return [Role.OPERATOR];
  }

  /**
   * 定义权限
   */
  static async definePermission(permission: Omit<Permission, 'id'>): Promise<Permission> {
    logger.info(`[RBACService] Defining permission: ${permission.name}`);
    // 这里可以添加定义权限的逻辑
    return {
      id: 'perm_' + permission.resource + '_' + permission.action,
      ...permission
    };
  }

  /**
   * 为角色分配权限
   */
  static async assignPermissionToRole(role: Role, permissionId: string): Promise<boolean> {
    logger.info(`[RBACService] Assigning permission: ${permissionId} to role: ${role}`);
    // 这里可以添加为角色分配权限的逻辑
    return true;
  }

  /**
   * 从角色移除权限
   */
  static async removePermissionFromRole(role: Role, permissionId: string): Promise<boolean> {
    logger.info(`[RBACService] Removing permission: ${permissionId} from role: ${role}`);
    // 这里可以添加从角色移除权限的逻辑
    return true;
  }

  /**
   * 获取角色权限
   */
  static async getRolePermissions(role: Role): Promise<Permission[]> {
    logger.info(`[RBACService] Getting permissions for role: ${role}`);
    // 这里可以添加获取角色权限的逻辑
    return [];
  }

  /**
   * 验证用户是否有权限访问资源
   */
  static async authorize(userId: string, resource: string, action: string, tenantId: string, shopId: string): Promise<boolean> {
    const result = await this.checkPermission(userId, resource, action, tenantId, shopId);
    return result.allowed;
  }
}
