Initial version of Technologies Entity

src/main/kotlin/pt/up/fe/ni/website/backend/controller/TechnologyController.kt

@@ -0,0 +1,24 @@
+package pt.up.fe.ni.website.backend.controller
+
+import org.springframework.web.bind.annotation.*
+import pt.up.fe.ni.website.backend.dto.entity.TechnologyDto
+import pt.up.fe.ni.website.backend.service.TechnologyService
+
+@RestController
+@RequestMapping("/technologies")
+class TechnologyController(private val technologyService: TechnologyService) {
+    @GetMapping
+    fun getAllTechnologies() = technologyService.getAllTechnologies()
+
+    @GetMapping("/{id}")
+    fun getTechnology(@PathVariable id: Long) = technologyService.getTechnologyById(id)
+
+    @PostMapping
+    fun createNewTechnology(@RequestBody dto: TechnologyDto) = technologyService.createTechnology(dto)
+
+    @DeleteMapping("/{id}")
+    fun deleteTechnology(@PathVariable id: Long) = technologyService.deleteTechnology(id)
+
+    @PutMapping("/{id}")
+    fun updateTechnology(@PathVariable id: Long, @RequestBody dto: TechnologyDto) = technologyService.updateTechnology(id, dto)
+}

src/main/kotlin/pt/up/fe/ni/website/backend/dto/entity/TechnologyDto.kt

@@ -0,0 +1,8 @@
+package pt.up.fe.ni.website.backend.dto.entity
+
+import pt.up.fe.ni.website.backend.model.Technology
+
+class TechnologyDto(
+    val name: String,
+    val logo: String?,
+) : EntityDto<Technology>()

src/main/kotlin/pt/up/fe/ni/website/backend/model/Technology.kt

@@ -0,0 +1,21 @@
+package pt.up.fe.ni.website.backend.model
+
+import com.fasterxml.jackson.annotation.JsonProperty
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.Id
+import jakarta.validation.constraints.NotBlank
+
+@Entity
+class Technology(
+    @JsonProperty(required = true)
+    @field:NotBlank
+    var name: String,
+
+    @JsonProperty(required = true)
+    @field:NotBlank
+    var logo: String,
+
+    @Id @GeneratedValue
+    val id: Long? = null
+)

src/main/kotlin/pt/up/fe/ni/website/backend/repository/TechnologyRepository.kt

@@ -0,0 +1,8 @@
+package pt.up.fe.ni.website.backend.repository
+
+import org.springframework.data.repository.CrudRepository
+import org.springframework.stereotype.Repository
+import pt.up.fe.ni.website.backend.model.Technology
+
+@Repository
+interface TechnologyRepository : CrudRepository<Technology, Long>

src/main/kotlin/pt/up/fe/ni/website/backend/service/ErrorMessages.kt

@@ -51,4 +51,6 @@ object ErrorMessages {
     fun userAlreadyHasRole(roleId: Long, userId: Long): String = "user $userId already has role $roleId"
 
     fun userNotInRole(roleId: Long, userId: Long): String = "user $userId doesn't have role $roleId"
+
+    fun technologyNotFound(id: Long): String = "technology not found with id $id"
 }

src/main/kotlin/pt/up/fe/ni/website/backend/service/TechnologyService.kt

@@ -0,0 +1,36 @@
+package pt.up.fe.ni.website.backend.service
+
+import org.springframework.stereotype.Service
+import pt.up.fe.ni.website.backend.dto.entity.TechnologyDto
+import pt.up.fe.ni.website.backend.model.Technology
+import pt.up.fe.ni.website.backend.repository.TechnologyRepository
+
+@Service
+class TechnologyService(
+    private val technologyRepository: TechnologyRepository,
+) {
+    fun getTechnologyById(technologyId: Long): Technology {
+        val technology = technologyRepository.findById(technologyId).orElseThrow {
+            throw NoSuchElementException(ErrorMessages.technologyNotFound(technologyId))
+        }
+        return technology
+    }
+
+    fun getAllTechnologies() : List<Technology> = technologyRepository.findAll().toList()
+
+    fun createTechnology(dto: TechnologyDto): Technology {
+        val technology = dto.create()
+        return technologyRepository.save(technology)
+    }
+
+    fun updateTechnology(technologyId: Long, dto: TechnologyDto): Technology {
+        val technology = getTechnologyById(technologyId)
+        dto.update(technology)
+        return technologyRepository.save(technology)
+    }
+
+    fun deleteTechnology(technologyId: Long) {
+        val technology = getTechnologyById(technologyId)
+        technologyRepository.delete(technology)
+    }
+}