Exercise Data class, repo, controller

src/main/kotlin/com/aitrainer/api/controller/ExerciesController.kt

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+package com.aitrainer.api.controller
+
+import com.aitrainer.api.model.Customer
+import com.aitrainer.api.model.Exercises
+import com.aitrainer.api.repository.ExercisesRepository
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.PutMapping
+import org.springframework.web.bind.annotation.RequestBody
+import javax.validation.Valid
+
+class ExerciesController(private val exercisesRepository: ExercisesRepository) {
+
+    @PostMapping("/exercises")
+    fun createNewCustomer(@Valid @RequestBody exercises: Exercises): Exercises =
+            exercisesRepository.save(exercises)
+
+    @PutMapping("/exercises/{id}")
+    fun updateExerciseById(@PathVariable(value = "id") exerciseId: Long,
+                           @Valid @RequestBody newExercises: Exercises): ResponseEntity<Exercises> {
+        return exercisesRepository.findById(exerciseId).map { existingExercises ->
+            val updatedExercises: Exercises = existingExercises.copy(
+                    exercise_type_id = newExercises.exercise_type_id,
+                    customer_id = newExercises.customer_id,
+                    dateTimeExercise = newExercises.dateTimeExercise,
+                    quantity = newExercises.quantity,
+                    restTime = newExercises.restTime
+            )
+            ResponseEntity.ok().body(exercisesRepository.save(updatedExercises))
+        }.orElse(ResponseEntity.notFound().build())
+    }
+}

src/main/kotlin/com/aitrainer/api/model/Exercises.kt

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+package com.aitrainer.api.model
+
+import org.springframework.lang.NonNull
+import java.sql.Date
+import javax.persistence.Entity
+import javax.persistence.GeneratedValue
+import javax.persistence.GenerationType
+import javax.persistence.Id
+
+@Entity
+data class Exercises (
+    @get: NonNull var exercise_type_id: Long = 0,
+    @get: NonNull var customer_id: Long = 0,
+    @get: NonNull var dateTimeExercise: Date? = null,
+    @get: NonNull var quantity: Int = 0,
+    var restTime: Int = 0, // in seconds
+
+    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
+    val exercise_id: Long = 0
+)

src/main/kotlin/com/aitrainer/api/repository/ExercisesRepository.kt

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+package com.aitrainer.api.repository
+
+import com.aitrainer.api.model.Exercises
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.stereotype.Repository
+
+@Repository
+interface ExercisesRepository : JpaRepository<Exercises, Long>