package com.mydreamjob.auth;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Lock;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;

import jakarta.persistence.LockModeType;

import java.util.Optional;

@Repository
public interface UserRepository extends JpaRepository<User, Long> {
    Optional<User> findByPhone(String phone);

    @Lock(LockModeType.PESSIMISTIC_WRITE)
    @Query("select u from User u where u.phone = :phone")
    Optional<User> findByPhoneForUpdate(@Param("phone") String phone);

    @Lock(LockModeType.PESSIMISTIC_WRITE)
    @Query("select u from User u where u.id = :id")
    Optional<User> findByIdForUpdate(@Param("id") Long id);
    Optional<User> findByEmail(String email);
    boolean existsByPhone(String phone);
    boolean existsByEmail(String email);

    /** 统计主角色为给定角色且处于启用状态的用户数（用于最后一个有效 ADMIN 保护）。 */
    long countByRoleAndActiveTrue(User.Role role);
}