added comments

backend/internal/posts/controller.go

@@ -12,6 +12,7 @@ import (
 	"github.com/gorilla/mux"
 )
 
+// SavePost handles saving a new post to the database after extracting user claims and decoding the request body.
 func (s Service) SavePost(w http.ResponseWriter, r *http.Request) {
 	claims, ok := auth.ExtractClaims(r.Context())
 	if !ok {
@@ -45,6 +46,7 @@ func (s Service) SavePost(w http.ResponseWriter, r *http.Request) {
 	w.Write(res)
 }
 
+// GetAllPosts retrieves all posts from the database, eager-loads comments, orders them by creation time, and returns them as JSON.
 func (s Service) GetAllPosts(w http.ResponseWriter, r *http.Request) {
 	var posts []model.Post
 
@@ -63,6 +65,7 @@ func (s Service) GetAllPosts(w http.ResponseWriter, r *http.Request) {
 	w.Write(res)
 }
 
+// DeletePost handles deleting a post from the database based on its ID and user authentication.
 func (s Service) DeletePost(w http.ResponseWriter, r *http.Request) {
 	idStr, ok := mux.Vars(r)["postID"]
 	if !ok {

backend/internal/posts/resource.go

@@ -2,10 +2,12 @@ package posts
 
 import "gorm.io/gorm"
 
+// Service Represents a service with a database connection.
 type Service struct {
 	db *gorm.DB
 }
 
+// Service New creates a new Service instance, initializing it with a GORM database connection.
 func New(db *gorm.DB) *Service {
 	return &Service{db: db}
 }