feat: add get post by id endpoint

Author: ainunns

controller/post_controller.go

@@ -7,11 +7,13 @@ import (
 	"github.com/Lab-RPL-ITS/twitter-clone-api/service"
 	"github.com/Lab-RPL-ITS/twitter-clone-api/utils"
 	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
 )
 
 type (
 	PostController interface {
-		Create(ctx *gin.Context)
+		CreatePost(ctx *gin.Context)
+		GetPostById(ctx *gin.Context)
 	}
 
 	postController struct {
@@ -25,7 +27,7 @@ func NewPostController(ps service.PostService) PostController {
 	}
 }
 
-func (c *postController) Create(ctx *gin.Context) {
+func (c *postController) CreatePost(ctx *gin.Context) {
 	var post dto.PostCreateRequest
 	if err := ctx.ShouldBind(&post); err != nil {
 		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_POST_DATA_FROM_BODY, err.Error(), nil)
@@ -43,3 +45,22 @@ func (c *postController) Create(ctx *gin.Context) {
 	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_CREATE_POST, result)
 	ctx.JSON(http.StatusOK, res)
 }
+
+func (c *postController) GetPostById(ctx *gin.Context) {
+	postId, err := uuid.Parse(ctx.Param("post_id"))
+	if err != nil {
+		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_POST_ID, err.Error(), nil)
+		ctx.AbortWithStatusJSON(http.StatusBadRequest, res)
+		return
+	}
+
+	result, err := c.postService.GetPostById(ctx.Request.Context(), postId)
+	if err != nil {
+		res := utils.BuildResponseFailed(dto.MESSAGE_FAILED_GET_POST_ID, err.Error(), nil)
+		ctx.JSON(http.StatusBadRequest, res)
+		return
+	}
+
+	res := utils.BuildResponseSuccess(dto.MESSAGE_SUCCESS_CREATE_POST, result)
+	ctx.JSON(http.StatusOK, res)
+}

dto/post_dto.go

@@ -10,6 +10,7 @@ const (
 	// Failed
 	MESSAGE_FAILED_GET_POST_DATA_FROM_BODY = "failed get data from body"
 	MESSAGE_FAILED_CREATE_POST             = "failed create post"
+	MESSAGE_FAILED_GET_POST_ID             = "failed get post id"
 
 	// Succcess
 	MESSAGE_SUCCESS_CREATE_POST = "success create post"

repository/post_repository.go

@@ -43,8 +43,19 @@ func (r *postRepository) GetPostById(ctx context.Context, tx *gorm.DB, postId uu
 	}
 
 	var post entity.Post
-	if err := tx.WithContext(ctx).Joins("JOIN users ON users.id = posts.user_id ").Where("posts.id = ?", postId).Take(&post).Error; err != nil {
-		return entity.Post{}, err
+	if err := tx.WithContext(ctx).Joins("User").Where("posts.id = ?", postId).Take(&post).Error; err != nil {
+		return entity.Post{
+			ID:       post.ID,
+			Text:     post.Text,
+			ParentID: post.ParentID,
+			User: entity.User{
+				ID:       post.User.ID,
+				Name:     post.User.Name,
+				Username: post.User.Username,
+				Bio:      post.User.Bio,
+				ImageUrl: post.User.ImageUrl,
+			},
+		}, err
 	}
 
 	return post, nil

routes/post_route.go

@@ -15,6 +15,8 @@ func Post(route *gin.Engine, injector *do.Injector) {
 
 	routes := route.Group("/api/post")
 	{
-		routes.POST("/", middleware.Authenticate(jwtService), postController.Create)
+		// Post
+		routes.POST("/", middleware.Authenticate(jwtService), postController.CreatePost)
+		routes.GET("/:post_id", postController.GetPostById)
 	}
 }

service/post_service.go

@@ -6,11 +6,13 @@ import (
 	"github.com/Lab-RPL-ITS/twitter-clone-api/dto"
 	"github.com/Lab-RPL-ITS/twitter-clone-api/entity"
 	"github.com/Lab-RPL-ITS/twitter-clone-api/repository"
+	"github.com/google/uuid"
 )
 
 type (
 	PostService interface {
 		CreatePost(ctx context.Context, req dto.PostCreateRequest) (dto.PostResponse, error)
+		GetPostById(ctx context.Context, postId uuid.UUID) (dto.PostResponse, error)
 	}
 
 	postService struct {
@@ -70,3 +72,23 @@ func (s *postService) CreatePost(ctx context.Context, req dto.PostCreateRequest)
 		},
 	}, nil
 }
+
+func (s *postService) GetPostById(ctx context.Context, postId uuid.UUID) (dto.PostResponse, error) {
+	post, err := s.postRepo.GetPostById(ctx, nil, postId)
+	if err != nil {
+		return dto.PostResponse{}, dto.ErrGetPostById
+	}
+
+	return dto.PostResponse{
+		ID:       post.ID.String(),
+		Text:     post.Text,
+		ParentID: post.ParentID,
+		User: dto.UserResponse{
+			ID:       post.UserID.String(),
+			Name:     post.User.Name,
+			Bio:      post.User.Bio,
+			UserName: post.User.Username,
+			ImageUrl: post.User.ImageUrl,
+		},
+	}, nil
+}