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post-controller.go
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post-controller.go
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package controller
import (
"encoding/json"
"net/http"
"example.com/clean-arch/entity"
"example.com/clean-arch/errors"
"example.com/clean-arch/service"
)
type controller struct{}
var (
postService service.PostService
)
type PostController interface {
GetPosts(response http.ResponseWriter, request *http.Request)
AddPost(response http.ResponseWriter, request *http.Request)
}
func NewPostController(service service.PostService) PostController {
postService = service
return &controller{}
}
func (*controller) GetPosts(response http.ResponseWriter, request *http.Request) {
response.Header().Set("Content-Type", "application/json")
posts, err := postService.FindAll()
if err != nil {
response.WriteHeader(http.StatusInternalServerError)
json.NewEncoder(response).Encode(errors.ServiceError{Message: "Error getting the posts"})
}
response.WriteHeader(http.StatusOK)
json.NewEncoder(response).Encode(posts)
}
func (*controller) AddPost(response http.ResponseWriter, request *http.Request) {
response.Header().Set("Content-Type", "application/json")
var post entity.Post
err := json.NewDecoder(request.Body).Decode(&post)
if err != nil {
response.WriteHeader(http.StatusInternalServerError)
json.NewEncoder(response).Encode(errors.ServiceError{Message: "Error unmarshalling data"})
return
}
err = postService.Validate(&post)
if err != nil {
response.WriteHeader(http.StatusInternalServerError)
json.NewEncoder(response).Encode(errors.ServiceError{Message: err.Error()})
return
}
result, err := postService.Create(&post)
if err != nil {
response.WriteHeader(http.StatusInternalServerError)
json.NewEncoder(response).Encode(errors.ServiceError{Message: "Error saving the post"})
return
}
response.WriteHeader(http.StatusOK)
json.NewEncoder(response).Encode(result)
}