feat: 평점 저장, 조회 API 구현

src/main/kotlin/com/yourssu/soongpt/domain/rating/application/RatingController.kt

@@ -0,0 +1,29 @@
+package com.yourssu.soongpt.domain.rating.application
+
+import com.yourssu.soongpt.common.business.dto.Response
+import com.yourssu.soongpt.domain.rating.application.dto.RatingCreatedRequest
+import com.yourssu.soongpt.domain.rating.application.dto.RatingFoundRequest
+import com.yourssu.soongpt.domain.rating.business.RatingService
+import com.yourssu.soongpt.domain.rating.business.dto.RatingResponse
+import org.springframework.web.bind.annotation.GetMapping
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping("/api/ratings")
+class RatingController(
+    private val ratingService: RatingService,
+) {
+    @PostMapping
+    fun save(request: RatingCreatedRequest): Response<RatingResponse> {
+        val response = ratingService.save(request.toCommand())
+        return Response(result = response)
+    }
+
+    @GetMapping
+    fun findBy(request: RatingFoundRequest): Response<RatingResponse> {
+        val response = ratingService.findBy(request.toCommand())
+        return Response(result = response)
+    }
+}

src/main/kotlin/com/yourssu/soongpt/domain/rating/application/dto/RatingCreatedRequest.kt

@@ -0,0 +1,19 @@
+package com.yourssu.soongpt.domain.rating.application.dto
+
+import com.yourssu.soongpt.domain.rating.business.RatingCreatedCommand
+
+data class RatingCreatedRequest(
+    val course: String,
+    val professor: String,
+    val courseCode: String,
+    val star: Int,
+) {
+    fun toCommand(): RatingCreatedCommand {
+        return RatingCreatedCommand(
+            course = course,
+            professor = professor,
+            courseCode = courseCode,
+            star = star,
+        )
+    }
+}

src/main/kotlin/com/yourssu/soongpt/domain/rating/application/dto/RatingFoundRequest.kt

@@ -0,0 +1,16 @@
+package com.yourssu.soongpt.domain.rating.application.dto
+
+import com.yourssu.soongpt.domain.rating.business.RatingFoundCommand
+
+class RatingFoundRequest(
+    val course: String,
+    val professor: String,
+) {
+    fun toCommand(): RatingFoundCommand {
+        return RatingFoundCommand(
+            course = course,
+            professor = professor,
+        )
+    }
+
+}

src/main/kotlin/com/yourssu/soongpt/domain/rating/business/RatingCreatedCommand.kt

@@ -0,0 +1,20 @@
+package com.yourssu.soongpt.domain.rating.business
+
+import com.yourssu.soongpt.domain.rating.implement.Rating
+
+class RatingCreatedCommand(
+    val course: String,
+    val professor: String,
+    val courseCode: String,
+    val star: Int,
+) {
+    fun toRating(): Rating {
+        return Rating(
+            courseName = course,
+            professorName = professor,
+            courseCode = courseCode,
+            star = star,
+        )
+    }
+}
+

src/main/kotlin/com/yourssu/soongpt/domain/rating/business/RatingFoundCommand.kt

@@ -0,0 +1,6 @@
+package com.yourssu.soongpt.domain.rating.business
+
+class RatingFoundCommand(
+    val course: String,
+    val professor: String,
+)

src/main/kotlin/com/yourssu/soongpt/domain/rating/business/RatingService.kt

@@ -0,0 +1,23 @@
+package com.yourssu.soongpt.domain.rating.business
+
+import com.yourssu.soongpt.domain.rating.business.dto.RatingResponse
+import com.yourssu.soongpt.domain.rating.implement.RatingReader
+import com.yourssu.soongpt.domain.rating.implement.RatingWriter
+import org.springframework.stereotype.Service
+
+@Service
+class RatingService(
+    private val ratingWriter: RatingWriter,
+    private val ratingReader: RatingReader,
+) {
+    fun save(command: RatingCreatedCommand): RatingResponse {
+        val rating = ratingWriter.save(command.toRating())
+        return RatingResponse.from(rating)
+    }
+
+    fun findBy(command: RatingFoundCommand): RatingResponse {
+        val rating = ratingReader.findBy(courseName = command.course, professorName = command.professor)
+        return RatingResponse.from(rating)
+    }
+
+}

src/main/kotlin/com/yourssu/soongpt/domain/rating/implement/RatingWriter.kt

@@ -0,0 +1,12 @@
+package com.yourssu.soongpt.domain.rating.implement
+
+import org.springframework.stereotype.Component
+
+@Component
+class RatingWriter(
+    private val ratingRepository: RatingRepository,
+) {
+    fun save(rating: Rating): Rating {
+        return ratingRepository.save(rating)
+    }
+}