feat: Implement feature to list all employees from a project (SCRUM-46) (!36)

Co-authored-by: Phan Huy Tran <p.tran@neusta.de>
Reviewed-on: #36

src/main/java/de/szut/lf8_starter/employee/EmployeeService.java

@@ -1,5 +1,7 @@
 package de.szut.lf8_starter.employee;
 
+import de.szut.lf8_starter.exceptionHandling.ResourceNotFoundException;
+import de.szut.lf8_starter.project.dto.employee.GetEmployeeDto;
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
@@ -31,4 +33,19 @@ public class EmployeeService {
 
         return true;
     }
+
+    public GetEmployeeDto getEmployee(String accessToken, Long employeeId) {
+        HttpHeaders headers = new HttpHeaders();
+        headers.setBearerAuth(accessToken.replace("Bearer ", ""));
+
+        HttpEntity<String> requestEntity = new HttpEntity<>(headers);
+
+        String url = "https://employee.szut.dev/employees/" + employeeId;
+
+        try {
+            return restTemplate.exchange(url, HttpMethod.GET, requestEntity, GetEmployeeDto.class).getBody();
+        } catch (HttpClientErrorException.NotFound e) {
+            throw new ResourceNotFoundException("Employee not found");
+        }
+    }
 }

src/main/java/de/szut/lf8_starter/exceptionHandling/GlobalExceptionHandler.java

@@ -30,7 +30,7 @@ public class GlobalExceptionHandler {
     @ExceptionHandler(Exception.class)
     public ResponseEntity<ErrorDetails> handleAllOtherExceptions(Exception ex, WebRequest request) {
         ErrorDetails errorDetails = new ErrorDetails(new Date(), ex.getClass() + " " + ex.getMessage(), request.getDescription(false));
-
+        
         return new ResponseEntity<>(errorDetails, HttpStatus.INTERNAL_SERVER_ERROR);
     }
 

src/main/java/de/szut/lf8_starter/project/action/RemoveProjectAction.java

@@ -2,14 +2,17 @@ package de.szut.lf8_starter.project.action;
 
 import de.szut.lf8_starter.project.ProjectEntity;
 import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.GetProjectDto;
+import de.szut.lf8_starter.project.dto.project.GetProjectDto;
 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 org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
 
 import java.util.Optional;
 

src/main/java/de/szut/lf8_starter/project/action/crud/CreateProjectAction.java

@@ -1,10 +1,10 @@
 package de.szut.lf8_starter.project.action.crud;
 
 import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectMapper;
 import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.CreateProjectDto;
-import de.szut.lf8_starter.project.dto.GetProjectDto;
+import de.szut.lf8_starter.project.dto.project.CreateProjectDto;
+import de.szut.lf8_starter.project.dto.project.GetProjectDto;
+import de.szut.lf8_starter.project.mapper.ProjectMapper;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;

src/main/java/de/szut/lf8_starter/project/action/crud/GetAllProjectsAction.java

@@ -1,8 +1,8 @@
 package de.szut.lf8_starter.project.action.crud;
 
-import de.szut.lf8_starter.project.ProjectMapper;
 import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.GetProjectDto;
+import de.szut.lf8_starter.project.dto.project.GetProjectDto;
+import de.szut.lf8_starter.project.mapper.ProjectMapper;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;

src/main/java/de/szut/lf8_starter/project/action/crud/GetProjectAction.java

@@ -1,9 +1,9 @@
 package de.szut.lf8_starter.project.action.crud;
 
 import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectMapper;
 import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.GetProjectDto;
+import de.szut.lf8_starter.project.dto.project.GetProjectDto;
+import de.szut.lf8_starter.project.mapper.ProjectMapper;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;

src/main/java/de/szut/lf8_starter/project/action/crud/UpdateProjectAction.java

@@ -1,10 +1,10 @@
 package de.szut.lf8_starter.project.action.crud;
 
 import de.szut.lf8_starter.project.ProjectEntity;
-import de.szut.lf8_starter.project.ProjectMapper;
 import de.szut.lf8_starter.project.ProjectService;
-import de.szut.lf8_starter.project.dto.GetProjectDto;
-import de.szut.lf8_starter.project.dto.UpdateProjectDto;
+import de.szut.lf8_starter.project.dto.project.GetProjectDto;
+import de.szut.lf8_starter.project.dto.project.UpdateProjectDto;
+import de.szut.lf8_starter.project.mapper.ProjectMapper;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.media.Content;
 import io.swagger.v3.oas.annotations.media.Schema;

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

@@ -0,0 +1,51 @@
+package de.szut.lf8_starter.project.action.employee;
+
+import de.szut.lf8_starter.project.ProjectEntity;
+import de.szut.lf8_starter.project.ProjectService;
+import de.szut.lf8_starter.project.dto.employee.GetEmployeesFromProjectDto;
+import de.szut.lf8_starter.project.mapper.EmployeeFromProjectMapper;
+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.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Optional;
+
+@RestController
+public class GetEmployeeFromProjectAction {
+    private final ProjectService projectService;
+    private final EmployeeFromProjectMapper employeeFromProjectMapper;
+
+    public GetEmployeeFromProjectAction(ProjectService projectService, EmployeeFromProjectMapper employeeFromProjectMapper) {
+        this.projectService = projectService;
+        this.employeeFromProjectMapper = employeeFromProjectMapper;
+    }
+
+    @Operation(summary = "Get all employees from project")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "200", description = "Outputs projects with employees"),
+            @ApiResponse(responseCode = "404", description = "Project not found", content = @Content)
+    })
+    @GetMapping("/projects/{projectId}/employees")
+    public ResponseEntity<Object> create(
+            @PathVariable Long projectId,
+            @RequestHeader("Authorization") String accessToken
+    ) {
+        Optional<ProjectEntity> project = projectService.findById(projectId);
+
+        if (project.isEmpty()) {
+            return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+        }
+
+        GetEmployeesFromProjectDto getEmployeesFromProjectDto = this.employeeFromProjectMapper
+                .mapToGetEmployeesFromProjectDto(project.get(), accessToken);
+
+        return new ResponseEntity<>(getEmployeesFromProjectDto, HttpStatus.OK);
+    }
+}

src/main/java/de/szut/lf8_starter/project/dto/employee/EmployeeDto.java

@@ -1,4 +1,4 @@
-package de.szut.lf8_starter.project.dto;
+package de.szut.lf8_starter.project.dto.employee;
 
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;

src/main/java/de/szut/lf8_starter/project/dto/employee/GetEmployeeDto.java

@@ -0,0 +1,11 @@
+package de.szut.lf8_starter.project.dto.employee;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class GetEmployeeDto {
+    private long id;
+    private GetSkillDto[] skillSet;
+}

src/main/java/de/szut/lf8_starter/project/dto/employee/GetEmployeesFromProjectDto.java

@@ -0,0 +1,17 @@
+package de.szut.lf8_starter.project.dto.employee;
+
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.ArrayList;
+
+@Getter
+@Setter
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+public class GetEmployeesFromProjectDto {
+    private long projectId;
+    private String projectDescription;
+    private ArrayList<GetEmployeeDto> employees;
+}

src/main/java/de/szut/lf8_starter/project/dto/employee/GetSkillDto.java

@@ -0,0 +1,13 @@
+package de.szut.lf8_starter.project.dto.employee;
+
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
+public class GetSkillDto {
+    private String skill;
+}

src/main/java/de/szut/lf8_starter/project/dto/project/CreateProjectDto.java

@@ -1,4 +1,4 @@
-package de.szut.lf8_starter.project.dto;
+package de.szut.lf8_starter.project.dto.project;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;

src/main/java/de/szut/lf8_starter/project/dto/project/GetProjectDto.java

@@ -1,4 +1,4 @@
-package de.szut.lf8_starter.project.dto;
+package de.szut.lf8_starter.project.dto.project;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;

src/main/java/de/szut/lf8_starter/project/dto/project/UpdateProjectDto.java

@@ -1,4 +1,4 @@
-package de.szut.lf8_starter.project.dto;
+package de.szut.lf8_starter.project.dto.project;
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;

src/main/java/de/szut/lf8_starter/project/mapper/EmployeeFromProjectMapper.java

@@ -0,0 +1,35 @@
+package de.szut.lf8_starter.project.mapper;
+
+import de.szut.lf8_starter.employee.EmployeeService;
+import de.szut.lf8_starter.project.ProjectEntity;
+import de.szut.lf8_starter.project.dto.employee.GetEmployeeDto;
+import de.szut.lf8_starter.project.dto.employee.GetEmployeesFromProjectDto;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+
+@Service
+public class EmployeeFromProjectMapper {
+    private final EmployeeService employeeService;
+
+    public EmployeeFromProjectMapper(EmployeeService employeeService) {
+        this.employeeService = employeeService;
+    }
+
+    public GetEmployeesFromProjectDto mapToGetEmployeesFromProjectDto(ProjectEntity projectEntity, String accessToken) {
+        GetEmployeesFromProjectDto getEmployeesFromProjectDto = new GetEmployeesFromProjectDto();
+        getEmployeesFromProjectDto.setProjectId(projectEntity.getId());
+        getEmployeesFromProjectDto.setProjectDescription(projectEntity.getComment());
+
+        ArrayList<GetEmployeeDto> employeeDtos = new ArrayList<>();
+        for (long id : projectEntity.getEmployees()) {
+            GetEmployeeDto getEmployeeDto = this.employeeService.getEmployee(accessToken, id);
+
+            employeeDtos.add(getEmployeeDto);
+        }
+
+        getEmployeesFromProjectDto.setEmployees(employeeDtos);
+
+        return getEmployeesFromProjectDto;
+    }
+}

src/main/java/de/szut/lf8_starter/project/mapper/ProjectMapper.java

@@ -1,8 +1,9 @@
-package de.szut.lf8_starter.project;
+package de.szut.lf8_starter.project.mapper;
 
-import de.szut.lf8_starter.project.dto.CreateProjectDto;
-import de.szut.lf8_starter.project.dto.GetProjectDto;
-import de.szut.lf8_starter.project.dto.UpdateProjectDto;
+import de.szut.lf8_starter.project.ProjectEntity;
+import de.szut.lf8_starter.project.dto.project.CreateProjectDto;
+import de.szut.lf8_starter.project.dto.project.GetProjectDto;
+import de.szut.lf8_starter.project.dto.project.UpdateProjectDto;
 import org.springframework.stereotype.Service;
 
 @Service