PMT-16: Implement New Endpoint Logic

Co-authored-by: Dominik Säume <dominik.saeume@hmmh.de>
Co-authored-by: Rajbir Singh <rajbir.singh@hmmh.de>
Signed-off-by: Dominik Säume <Dominik.Saeume@hmmh.de>

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();
@@ -48,4 +54,32 @@ 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

@@ -43,5 +43,10 @@ public class Project {
     private LocalDateTime plannedEnd;
 
     private LocalDateTime realEnd; // Cant be named just "end" because it's and SQL Keyword
+
+
+    public boolean isValid() {
+        return 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;
+    }
+}