backend/buisnesslogic/src/main/java/com/plannaplan/repositories/GroupRepository.java

package com.plannaplan.repositories;

import java.util.List;
import java.util.Optional;

import com.plannaplan.entities.Groups;

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

@Repository
public interface GroupRepository extends JpaRepository<Groups, Long> {
    @Query("FROM Groups WHERE time = ?1 AND room = ?2 AND capacity = ?3")
    Optional<Groups> find(@Param("time") int time, @Param("room") String room, @Param("capacity") int capacity);

    @Query("FROM Groups WHERE course_id = ?1")
    List<Groups> getByCourse(@Param("id") Long id);

    // SELECT group_id, COUNT(*) AS assinged_times FROM assignment WHERE
    // is_past_assignment=0 GROUP BY group_id HAVING group_id=7;

    @Query("SELECT COUNT(*) AS assinged_times FROM Assignment WHERE isPastAssignment=false GROUP BY group HAVING group_id=?1")
    Number getAssignedAmount(Long groupId);

    // @Query("SELECT group_id, COUNT(*) AS assinged_times FROM assignment WHERE
    // is_past_assignment=0 GROUP BY group_id HAVING group_id=7;")
    // Number getTmpSqlAssignedAmount(Long groupId);

}