update project CURD

src/main/java/com/com/cnu/devlog_springboot/controller/ProjectController.java

@@ -0,0 +1,52 @@
+package com.com.cnu.devlog_springboot.controller;
+
+import com.com.cnu.devlog_springboot.model.Project;
+import com.com.cnu.devlog_springboot.model.request.ProjectRequest;
+import com.com.cnu.devlog_springboot.service.ProjectService;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/projects")
+@AllArgsConstructor
+public class ProjectController {
+
+    private final ProjectService projectService;
+
+    @GetMapping
+    public ResponseEntity<List<Project>> getProjects() {
+        return ResponseEntity.ok(projectService.getProjects());
+    }
+
+    @GetMapping("{projectId}")
+    public ResponseEntity<Project> getProject(@PathVariable Integer projectId) {
+        return ResponseEntity.ok(projectService.getProject(projectId));
+    }
+
+    @PostMapping
+    public ResponseEntity<Project> createProject(@RequestBody ProjectRequest projectRequest) {
+        return ResponseEntity.ok(projectService.createProject(projectRequest));
+    }
+
+    @PostMapping("{projectId}")
+    public ResponseEntity<Project> updateProject(
+            @PathVariable Integer projectId,
+            @RequestBody ProjectRequest projectRequest
+    ) {
+        return ResponseEntity.ok(projectService.updateProject(projectId, projectRequest));
+    }
+
+    @DeleteMapping("{projectId}")
+    public ResponseEntity<Void> deleteProject(@PathVariable Integer projectId) {
+        projectService.deleteProject(projectId);
+        return ResponseEntity.noContent().build();
+    }
+}

src/main/java/com/com/cnu/devlog_springboot/model/Project.java

@@ -0,0 +1,26 @@
+package com.com.cnu.devlog_springboot.model;
+
+import com.com.cnu.devlog_springboot.model.request.ProjectRequest;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import lombok.*;
+
+import java.time.LocalDate;
+
+@Getter
+@Setter
+@Entity(name = "projects")
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED, force = true)
+public class Project {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    Integer id;
+    String title;
+    String summary;
+    String contents;
+    LocalDate startDate;
+    LocalDate endDate;
+}

src/main/java/com/com/cnu/devlog_springboot/model/request/ProjectRequest.java

@@ -0,0 +1,12 @@
+package com.com.cnu.devlog_springboot.model.request;
+
+import java.time.LocalDate;
+
+public record ProjectRequest(
+        String title,
+        String summary,
+        String contents,
+        LocalDate startDate,
+        LocalDate endDate
+) {
+}

src/main/java/com/com/cnu/devlog_springboot/repository/ProjectRepository.java

@@ -0,0 +1,7 @@
+package com.com.cnu.devlog_springboot.repository;
+
+import com.com.cnu.devlog_springboot.model.Project;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ProjectRepository extends JpaRepository<Project, Integer> {
+}

src/main/java/com/com/cnu/devlog_springboot/service/ProjectService.java

@@ -0,0 +1,56 @@
+package com.com.cnu.devlog_springboot.service;
+
+import com.com.cnu.devlog_springboot.exception.DevlogException;
+import com.com.cnu.devlog_springboot.model.Project;
+import com.com.cnu.devlog_springboot.model.request.ProjectRequest;
+import com.com.cnu.devlog_springboot.repository.ProjectRepository;
+import com.com.cnu.devlog_springboot.type.ErrorCode;
+
+import java.util.List;
+import lombok.AllArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@AllArgsConstructor
+public class ProjectService {
+    private final ProjectRepository projectRepository;
+
+    public List<Project> getProjects() {
+        return projectRepository.findAll();
+    }
+
+    public Project createProject(ProjectRequest projectRequest) {
+        return projectRepository.save(
+                new Project(
+                        null,
+                        projectRequest.title(),
+                        projectRequest.summary(),
+                        projectRequest.contents(),
+                        projectRequest.startDate(),
+                        projectRequest.endDate()
+                )
+        );
+    }
+
+    public Project updateProject(Integer projectId, ProjectRequest projectRequest) {
+        return projectRepository.findById(projectId)
+                .map(project -> {
+                    project.setTitle(projectRequest.title());
+                    project.setContents(projectRequest.contents());
+                    project.setSummary(projectRequest.summary());
+                    project.setStartDate(projectRequest.startDate());
+                    project.setEndDate(projectRequest.endDate());
+                    return projectRepository.save(project);
+                }).orElseThrow(() -> new DevlogException(ErrorCode.PROJECT_NOT_FOUND));
+    }
+
+    public Project getProject(Integer projectId) {
+        return projectRepository.findById(projectId)
+                .orElseThrow(() -> new DevlogException(ErrorCode.PROJECT_NOT_FOUND));
+    }
+
+    public void deleteProject(Integer projectId) {
+        projectRepository.findById(projectId)
+                .ifPresent(projectRepository::delete);
+    }
+}