refactor: trainee의 모든 수업 가져오도록 수정

Author: ymkim97

src/main/java/com/tnt/application/pt/PtService.java

@@ -362,17 +362,17 @@ private void validateLessonTime(PtTrainerTrainee ptTrainerTrainee, LocalDateTime
 	}
 
 	private int validateAndGetNextSession(PtTrainerTrainee ptTrainerTrainee, LocalDateTime start) {
-		List<PtLesson> notCompletedLessons =
-			ptLessonRepository.findAllByPtTrainerTraineeAndIsCompletedIsFalseAndDeletedAtIsNull(ptTrainerTrainee);
+		List<PtLesson> lessonsForTrainee =
+			ptLessonRepository.findAllByPtTrainerTraineeAndDeletedAtIsNull(ptTrainerTrainee);
 
 		int temp = 0;
 
-		if (!notCompletedLessons.isEmpty()) {
-			if (Objects.equals(notCompletedLessons.getLast().getSession(), ptTrainerTrainee.getTotalPtCount())) {
+		if (!lessonsForTrainee.isEmpty()) {
+			if (Objects.equals(lessonsForTrainee.getLast().getSession(), ptTrainerTrainee.getTotalPtCount())) {
 				throw new ConflictException(PT_LESSON_OVERFLOW);
 			}
 
-			for (PtLesson toCompare : notCompletedLessons) {
+			for (PtLesson toCompare : lessonsForTrainee) {
 				if (toCompare.getLessonStart().isBefore(start)) {
 					temp += 1;
 				} else {
@@ -381,8 +381,8 @@ private int validateAndGetNextSession(PtTrainerTrainee ptTrainerTrainee, LocalDa
 			}
 
 			// 뒤에 있는 수업 회차 다시 +1 update
-			for (int i = temp; i < notCompletedLessons.size(); i++) {
-				PtLesson lesson = notCompletedLessons.get(i);
+			for (int i = temp; i < lessonsForTrainee.size(); i++) {
+				PtLesson lesson = lessonsForTrainee.get(i);
 				lesson.increaseSession();
 			}
 		}

src/main/java/com/tnt/infrastructure/mysql/repository/pt/PtLessonRepository.java

@@ -1,7 +1,6 @@
 package com.tnt.infrastructure.mysql.repository.pt;
 
 import java.util.List;
-import java.util.Optional;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 
@@ -11,8 +10,4 @@
 public interface PtLessonRepository extends JpaRepository<PtLesson, Long> {
 
 	List<PtLesson> findAllByPtTrainerTraineeAndDeletedAtIsNull(PtTrainerTrainee ptTrainerTrainee);
-
-	Optional<PtLesson> findByIdAndDeletedAtIsNull(Long id);
-
-	List<PtLesson> findAllByPtTrainerTraineeAndIsCompletedIsFalseAndDeletedAtIsNull(PtTrainerTrainee ptTrainerTrainee);
 }