api/pmt.yml

@@ -27,15 +27,80 @@ components:
       type: array
       items:
         $ref: "#/components/schemas/ProjectInfo"
+    CreateProjectDTO:
+      type: object
+      properties:
+        name:
+          type: string
+        goal:
+          type: string
+        customerId:
+          type: integer
+          format: int64
+        administratorId:
+          type: integer
+          format: int64
+        start:
+          type: string
+          format: date-time
+        plannedEnd:
+          type: string
+          format: date-time
+    CreatedProjectDTO:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        goal:
+          type: string
+        customerId:
+          type: integer
+          format: int64
+        administratorId:
+          type: integer
+          format: int64
+        start:
+          type: string
+          format: date-time
+        plannedEnd:
+          type: string
+          format: date-time
   responses:
-    UnAuthorized:
-      description: "Un Authorized"
+    Unauthorized:
+      description: "Unauthorized"
+    NotFound:
+      description: "Not Found"
+      content:
+        text/plain:
+          schema:
+            type: string
+    Conflict:
+      description: "Conflict"
+      content:
+        text/plain:
+          schema:
+            type: string
+    UnprocessableContent:
+      description: "Unprocessable Content"
+      content:
+        text/plain:
+          schema:
+            type: string
     InternalError:
       description: "Internal Server Error"
       content:
         text/plain:
           schema:
             type: string
+    ServiceUnavailable:
+      description: "Service Unavailable"
+      content:
+        text/plain:
+          schema:
+            type: string
 paths:
   /project:
     get:
@@ -49,9 +114,37 @@ paths:
               schema:
                 $ref: "#/components/schemas/GetAllProjectsDTO"
         401:
-          $ref: "#/components/responses/UnAuthorized"
+          $ref: "#/components/responses/Unauthorized"
         500:
           $ref: "#/components/responses/InternalError"
+    post:
+      operationId: "CreateProject"
+      description: "Creates a new Project"
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/CreateProjectDTO"
+      responses:
+        201:
+          description: "Project created successfully"
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/CreatedProjectDTO"
+        401:
+          $ref: "#/components/responses/Unauthorized"
+        404:
+          $ref: "#/components/responses/NotFound"
+        409:
+          $ref: "#/components/responses/Conflict"
+        422:
+          $ref: "#/components/responses/UnprocessableContent"
+        500:
+          $ref: "#/components/responses/InternalError"
+        503:
+          $ref: "#/components/responses/ServiceUnavailable"
+  
   
   /project/{id}:
     delete:
@@ -68,7 +161,7 @@ paths:
         204:
           description: "Deletes a specific Project"
         401:
-          $ref: "#/components/responses/UnAuthorized"
+          $ref: "#/components/responses/Unauthorized"
         404:
           description: "Project not found"
           content:

src/main/java/de/hmmh/pmt/ApiController.java

@@ -1,30 +1,36 @@
 package de.hmmh.pmt;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
-import de.hmmh.pmt.employee.ApiClientFactory;
 import de.hmmh.pmt.db.Project;
 import de.hmmh.pmt.db.ProjectRepository;
-import de.hmmh.pmt.oas.DefaultApi;
+import de.hmmh.pmt.dtos.CreateProjectDTO;
+import de.hmmh.pmt.dtos.CreatedProjectDTO;
 import de.hmmh.pmt.dtos.GetAllProjectsDTO;
 import de.hmmh.pmt.dtos.ProjectInfo;
+import de.hmmh.pmt.employee.ApiClientFactory;
+import de.hmmh.pmt.oas.DefaultApi;
+import de.hmmh.pmt.util.Mapper;
 import jakarta.servlet.http.HttpServletRequest;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.RestClientException;
 
 import java.util.Optional;
 
 @Controller
 @RequestMapping("${openapi.projectManagement.base-path:/api/v1}")
 public class ApiController implements DefaultApi {
+    @Autowired
+    private Mapper mapper;
     @Autowired
     private ApiClientFactory apiClientFactory;
     @Autowired
     private ProjectRepository projectRepository;
 
-    // apiClientFactory.getEmployeeApi().findAll1()
-
     @Override
     public Optional<ObjectMapper> getObjectMapper() {
         return Optional.empty();
@@ -58,4 +64,32 @@ public class ApiController implements DefaultApi {
 
         return ResponseEntity.ok(response);
     }
+
+    @Override
+    public ResponseEntity<CreatedProjectDTO> createProject(CreateProjectDTO body) {
+        if (projectRepository.existsByName(body.getName())) {
+            return new ResponseEntity<>(HttpStatus.CONFLICT);
+        }
+
+        try {
+            apiClientFactory.getEmployeeApi().findById(body.getAdministratorId());
+        } catch (HttpClientErrorException exception) {
+            return new ResponseEntity<>(
+                    exception.getStatusCode().equals(HttpStatus.NOT_FOUND)
+                            ? HttpStatus.NOT_FOUND
+                            : HttpStatus.SERVICE_UNAVAILABLE
+            );
+        } catch (RestClientException exception) {
+            return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
+        }
+
+        Project project = mapper.map(body);
+        if (!project.isValid()) {
+            return new ResponseEntity<>(HttpStatus.UNPROCESSABLE_ENTITY);
+        }
+        projectRepository.save(project);
+
+        CreatedProjectDTO response = mapper.map(project);
+        return new ResponseEntity<>(response, HttpStatus.CREATED);
+    }
 }

src/main/java/de/hmmh/pmt/db/Project.java

@@ -1,6 +1,9 @@
 package de.hmmh.pmt.db;
 
 import jakarta.persistence.*;
+import jakarta.validation.ConstraintViolation;
+import jakarta.validation.Validation;
+import jakarta.validation.Validator;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
@@ -10,6 +13,7 @@ import lombok.NoArgsConstructor;
 import lombok.Setter;
 
 import java.time.LocalDateTime;
+import java.util.Set;
 
 @NoArgsConstructor
 @AllArgsConstructor
@@ -43,5 +47,16 @@ public class Project {
     private LocalDateTime plannedEnd;
 
     private LocalDateTime realEnd; // Cant be named just "end" because it's and SQL Keyword
+
+
+    public boolean isValid() {
+        Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
+        Set<ConstraintViolation<Project>> violations = validator.validate(this);
+
+        return violations.isEmpty() &&
+               plannedEnd.isAfter(start) &&
+               (realEnd == null || realEnd.isAfter(start));
+    }
+
 }
 

src/main/java/de/hmmh/pmt/db/ProjectRepository.java

@@ -3,4 +3,5 @@ package de.hmmh.pmt.db;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface ProjectRepository extends JpaRepository<Project, Long> {
+    boolean existsByName(String name);
 }

src/main/java/de/hmmh/pmt/util/Mapper.java

@@ -0,0 +1,32 @@
+package de.hmmh.pmt.util;
+
+import de.hmmh.pmt.db.Project;
+import de.hmmh.pmt.dtos.CreateProjectDTO;
+import de.hmmh.pmt.dtos.CreatedProjectDTO;
+import org.springframework.stereotype.Component;
+
+@Component
+public class Mapper {
+    public Project map(CreateProjectDTO dto) {
+        Project project = new Project();
+        project.setName(dto.getName());
+        project.setGoal(dto.getGoal());
+        project.setCustomerId(dto.getCustomerId());
+        project.setAdministratorId(dto.getAdministratorId());
+        project.setStart(dto.getStart());
+        project.setPlannedEnd(dto.getPlannedEnd());
+        return project;
+    }
+    
+    public CreatedProjectDTO map(Project project) {
+        CreatedProjectDTO dto = new CreatedProjectDTO();
+        dto.setId(project.getId());
+        dto.setName(project.getName());
+        dto.setGoal(project.getGoal());
+        dto.setCustomerId(project.getCustomerId());
+        dto.setAdministratorId(project.getAdministratorId());
+        dto.setStart(project.getStart());
+        dto.setPlannedEnd(project.getPlannedEnd());
+        return dto;
+    }
+}

src/test/java/de/hmmh/pmt/project/CreateTest.java

@@ -0,0 +1,105 @@
+package de.hmmh.pmt.project;
+import de.hmmh.pmt.IntegrationTest;
+import de.hmmh.pmt.db.Project;
+import de.hmmh.pmt.dtos.CreateProjectDTO;
+import de.hmmh.pmt.employee.dtos.EmployeeResponseDTO;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.RequestBuilder;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.web.client.HttpClientErrorException;
+import org.springframework.web.client.RestClientException;
+import java.time.LocalDateTime;
+import java.util.Map;
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+public class CreateTest extends IntegrationTest {
+
+    @Test
+    void successfullyCreate() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+                .thenReturn(new EmployeeResponseDTO());
+
+        this.mvc
+                .perform(getRequest(getCreateProjectDTO()))
+                .andExpect(status().isCreated())
+                .andExpect(jsonPath("$.id").exists());
+    }
+
+    @Test
+    void shouldNotCreateProjectWithSameName() throws Exception {
+        Map<String, Project> allProjects = createTestProjectData();
+        Project spaceStation = allProjects.get("space-station");
+
+        CreateProjectDTO createDTO = getCreateProjectDTO();
+        createDTO.setName(spaceStation.getName());
+
+        this.mvc
+                .perform(getRequest(createDTO))
+                .andExpect(status().isConflict());
+    }
+
+    @Test
+    void shouldNotCreateProjectWhenAdministratorDoesNotExist() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+            .thenThrow(new HttpClientErrorException(HttpStatus.NOT_FOUND));
+
+        this.mvc
+                .perform(getRequest(getCreateProjectDTO()))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    void shouldReturnUnavailableWhenEmployeeApiIsDown() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+            .thenThrow(new HttpClientErrorException(HttpStatus.INTERNAL_SERVER_ERROR));
+
+        this.mvc
+            .perform(getRequest(getCreateProjectDTO()))
+            .andExpect(status().isServiceUnavailable());
+    }
+
+    @Test
+    void shouldReturnInternalServerErrorOnApiClientCrash() throws Exception {
+        when(this.mockEmployeeApi.findById(Mockito.anyLong()))
+            .thenThrow(new RestClientException("Api Client crash"));
+
+        this.mvc
+            .perform(getRequest(getCreateProjectDTO()))
+            .andExpect(status().isInternalServerError());
+    }
+
+    @Test
+    void shouldReturnUnprocessableWhenDataIsInvalid() throws Exception {
+        CreateProjectDTO createDTO = getCreateProjectDTO();
+        createDTO.setStart(LocalDateTime.of(2003, 1, 13, 12, 51));
+        createDTO.setPlannedEnd(LocalDateTime.of(2002, 3, 21, 11, 42));
+
+        this.mvc
+            .perform(getRequest(createDTO))
+            .andExpect(status().isUnprocessableEntity());
+    }
+
+    private CreateProjectDTO getCreateProjectDTO() {
+        CreateProjectDTO createDTO = new CreateProjectDTO();
+        createDTO.setName("Test");
+        createDTO.setGoal("A Test Goal");
+        createDTO.setCustomerId(10L);
+        createDTO.setAdministratorId(10L);
+        createDTO.setStart(LocalDateTime.of(2000, 1, 13, 12, 51));
+        createDTO.setPlannedEnd(LocalDateTime.of(2002, 3, 21, 11, 42));
+        return createDTO;
+    }
+
+    private RequestBuilder getRequest(CreateProjectDTO createDTO) throws Exception {
+        return MockMvcRequestBuilders
+                .post(baseUri + "/project")
+                .accept(MediaType.APPLICATION_JSON)
+                .content(this.objectMapper.writeValueAsString(createDTO))
+                .contentType(MediaType.APPLICATION_JSON);
+    }
+}