import { Request, Response, NextFunction } from "express";
import { Student } from "../models/Student";
import { Teacher } from "../models/Teacher";
declare global {
    namespace Express {
        interface Request {
            teacher?: Teacher;
            student?: Student;
        }
    }
}
/**
 * Middleware to authenticate students
 *
 * Student tokens should contain:
 * - studentId: The student's ID (changed from id for clarity)
 */
export declare function authenticateStudent(req: Request, res: Response, next: NextFunction): Promise<void>;
/**
 * Middleware to authenticate teachers
 *
 * Teacher tokens should contain:
 * - teacherId: The teacher's ID
 */
export declare function authenticateTeacher(req: Request, res: Response, next: NextFunction): Promise<void>;