Added GetAllOffset. Post controller completed.

internal/application/interfaces/post_service.go

@@ -11,6 +11,7 @@ type PostService interface {
 	FindById(queries.PostFindByIdQuery) (*queries.PostFindByIdResult, error)
 	FindAllByUserName(queries.PostFindAllByUserNameQuery) (*queries.PostFindAllByUserNameResult, error)
 	GetAll() (*queries.PostGetAllResult, error)
+	GetAllOffset(int) (*queries.PostGetAllResult, error)
 	Update(commands.UpdatePostCommand) (*common.PostResult, error)
 	Delete(commands.DeletePostCommand) error
 }

internal/application/services/post_service.go

@@ -7,6 +7,7 @@ import (
 	"58team_blog/internal/application/queries"
 	"58team_blog/internal/domain/entities"
 	"58team_blog/internal/domain/repository"
+	"errors"
 	"fmt"
 	"time"
 )
@@ -86,6 +87,22 @@ func (s *PostService) GetAll() (*queries.PostGetAllResult, error) {
 	return result, nil
 }
 
+func (s *PostService) GetAllOffset(offset int) (*queries.PostGetAllResult, error) {
+	if offset < 0 {
+		return nil, errors.New("offset is less than 0")
+	}
+
+	posts, err := s.repo.GetAllOffset(offset)
+
+	if err != nil {
+		return nil, err
+	}
+
+	result := mapper.CreatePostGetAllResult(posts)
+
+	return result, nil
+}
+
 func (s *PostService) Update(cmd commands.UpdatePostCommand) (*common.PostResult, error) {
 	post, err := s.repo.FindById(cmd.Id)
 	if err != nil {