src/main/java/de/szut/lf8_starter/project/action/employee/RemoveEmployeeFromProjectAction.java

@@ -0,0 +1,52 @@
+package de.szut.lf8_starter.project.action.employee;
+
+import de.szut.lf8_starter.employee.EmployeeService;
+import de.szut.lf8_starter.project.ProjectEntity;
+import de.szut.lf8_starter.project.ProjectService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.Optional;
+
+@RestController
+public class RemoveEmployeeFromProjectAction {
+    private final ProjectService projectService;
+    private final EmployeeService employeeService;
+
+    public RemoveEmployeeFromProjectAction(ProjectService projectService, EmployeeService employeeService) {
+        this.projectService = projectService;
+        this.employeeService = employeeService;
+    }
+
+    @Operation(summary = "Remove an employee from a project")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "204", description = "Employee removed from project"),
+            @ApiResponse(responseCode = "404", description = "Project or employee not found", content = @Content)
+    })
+    @DeleteMapping("/projects/{projectId}/employees/{employeeId}")
+    public ResponseEntity<Object> remove(
+            @PathVariable Long projectId,
+            @PathVariable Long employeeId,
+            @RequestHeader("Authorization") String accessToken
+    ) {
+        Optional<ProjectEntity> project = this.projectService.findById(projectId);
+
+        if (project.isEmpty()) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+
+        if (!this.employeeService.employeeExists(accessToken, employeeId)) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+
+        project.get().getEmployees().remove(employeeId);
+        this.projectService.update(project.get());
+
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+    }
+}

src/test/java/de/szut/lf8_starter/integration/project/RemoveEmployeeFromProjectIntegrationTest.java

@@ -0,0 +1,85 @@
+package de.szut.lf8_starter.integration.project;
+
+import de.szut.lf8_starter.project.ProjectEntity;
+import de.szut.lf8_starter.project.ProjectRepository;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.http.*;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestTemplate;
+
+import java.time.LocalDate;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@SpringBootTest
+@AutoConfigureMockMvc(addFilters = false)
+class RemoveEmployeeFromProjectIntegrationTest {
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Autowired
+    private RestTemplate restTemplate;
+
+    @Autowired
+    private ProjectRepository projectRepository;
+
+    @Test
+    void removeEmployeeFromProject() throws Exception {
+        ProjectEntity project = new ProjectEntity();
+        project.setComment("comment");
+        project.setContractor(1);
+        project.setContractorName("contractorName");
+        project.setEndDate(LocalDate.of(2024, 1, 1));
+        project.setLeadingEmployee(1);
+        project.setName("name");
+        project.setStartDate(LocalDate.of(2021, 1, 1));
+        project.setEmployees(List.of(1L, 2L, 3L, 312L));
+        this.projectRepository.save(project);
+
+
+        mockMvc.perform(delete("/projects/{projectId}/employees/{employeeId}", 1, 312)
+                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
+                        .contentType(MediaType.APPLICATION_JSON))
+                .andExpect(status().isNoContent());
+
+        ProjectEntity updatedProject = projectRepository.findById(1L).get();
+
+        assert !updatedProject.getEmployees().contains(312L);
+    }
+
+    private String getBearerToken() {
+        String url = "https://keycloak.szut.dev/auth/realms/szut/protocol/openid-connect/token";
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
+
+        MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
+        map.add("grant_type", "password");
+        map.add("client_id", "employee-management-service");
+        map.add("username", "user");
+        map.add("password", "test");
+
+        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(map, headers);
+
+        ResponseEntity<Map> response = this.restTemplate.exchange(url, HttpMethod.POST, request, Map.class);
+
+        return Objects.requireNonNull(response.getBody()).get("access_token").toString();
+    }
+
+    @Test
+    void removeEmployeeShouldReturn404IfProjectNotFound() throws Exception {
+        mockMvc.perform(delete("/projects/{projectId}/employees/{employeeId}", 1987234987, 312)
+                        .header(HttpHeaders.AUTHORIZATION, getBearerToken())
+                        .contentType(MediaType.APPLICATION_JSON))
+                .andExpect(status().isNotFound());
+    }
+}

src/test/java/de/szut/lf8_starter/integration/project/UpdateProjectActionTest.java

@@ -136,6 +136,6 @@ class UpdateProjectActionTest {
 
     @Test
     void updateProjectShouldReturnNotFoundResponseWhenProjectIsNotFound() throws Exception {
-        this.mockMvc.perform(put("/projects/2").content("{}").contentType(MediaType.APPLICATION_JSON)).andExpect(status().isNotFound());
+        this.mockMvc.perform(put("/projects/98723498798").content("{}").contentType(MediaType.APPLICATION_JSON)).andExpect(status().isNotFound());
     }
 }