added comments

backend/internal/model/auth.go

@@ -14,11 +14,13 @@ const (
 	RoleGuest Role = "guest"
 )
 
+// InvalidJWT Represents a JWT that has expired or is otherwise invalid.
 type InvalidJWT struct {
 	JWT        string `gorm:"primarykey"`
 	ValidUntil time.Time
 }
 
+// User represents a user with an ID, UUID, name, role, and password.
 type User struct {
 	ID       uint      `gorm:"primarykey" json:"-"`
 	UUID     uuid.UUID `gorm:"type:uuid" json:"uuid"`
@@ -27,6 +29,7 @@ type User struct {
 	Password []byte    `json:"-"`
 }
 
+// NewUser creates a new User struct with a generated UUID.
 func NewUser() User {
 	return User{
 		UUID: uuid.New(),

backend/internal/model/blog.go

@@ -4,6 +4,7 @@ import (
 	"gorm.io/gorm"
 )
 
+// Post represents a blog post with associated comments and user ID.
 type Post struct {
 	gorm.Model
 	ID       uint   `gorm:"primarykey" json:"id"`
@@ -13,6 +14,8 @@ type Post struct {
 	Comments []Comment
 	UserID   uint `gorm:"->;<-:create"`
 }
+
+// Comment represents a comment on a post, including its ID, post association, content, and creator.
 type Comment struct {
 	ID      uint
 	PostID  uint

backend/internal/model/init.go

@@ -7,6 +7,7 @@ import (
 	"gorm.io/gorm"
 )
 
+// Init initializes the database connection, auto-migrates models, and seeds a default post.
 func Init() *gorm.DB {
 	db, err := gorm.Open(sqlite.Open("./blog.db"))
 	if err != nil {