refactor: add content type to response definitions for consistency across controllers

crates/backend/src/controller/auth.rs

@@ -32,7 +32,7 @@ pub fn setup(cfg: &mut ServiceConfig) {
     description = "Authenticate a user with username and password",
     request_body = LoginRequest,
     responses(
-        (status = 200, description = "Login successful", body = MessageResponse),
+        (status = 200, description = "Login successful", body = MessageResponse, content_type = "application/json"),
         (status = 400, description = "Invalid credentials"),
         (status = 409, description = "User already logged in"),
         (status = 500, description = "Internal server error")
@@ -66,7 +66,7 @@ pub async fn login(
     summary = "User logout",
     description = "Log out the currently authenticated user and clear session",
     responses(
-        (status = 200, description = "Logout successful", body = MessageResponse),
+        (status = 200, description = "Logout successful", body = MessageResponse, content_type = "application/json"),
         (status = 500, description = "Internal server error")
     )
 )]

crates/backend/src/controller/class.rs

@@ -15,7 +15,7 @@ pub fn setup(cfg: &mut actix_web::web::ServiceConfig) {
     summary = "Get all classes (Not Implemented)",
     description = "Retrieve a list of all classes - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[get("")]
@@ -33,7 +33,7 @@ async fn get_classes() -> impl Responder {
         ("id" = String, Path, description = "Class ID")
     ),
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[get("/{id}")]
@@ -48,7 +48,7 @@ async fn get_class() -> impl Responder {
     summary = "Create class (Not Implemented)",
     description = "Create a new class - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[post("")]
@@ -63,7 +63,7 @@ async fn create_class() -> impl Responder {
     summary = "Update class (Not Implemented)",
     description = "Update an existing class - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[put("")]
@@ -81,7 +81,7 @@ async fn update_class() -> impl Responder {
         ("id" = String, Path, description = "Class ID to delete")
     ),
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[delete("/{id}")]

crates/backend/src/controller/group.rs

@@ -15,7 +15,7 @@ pub fn setup(cfg: &mut actix_web::web::ServiceConfig) {
     summary = "Get all groups (Not Implemented)",
     description = "Retrieve a list of all groups - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[get("")]
@@ -33,7 +33,7 @@ async fn get_groups() -> impl Responder {
         ("project" = String, Path, description = "Project ID")
     ),
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[get("/{project}")]
@@ -48,7 +48,7 @@ async fn get_groups_for_project() -> impl Responder {
     summary = "Create group (Not Implemented)",
     description = "Create a new group - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[post("")]
@@ -63,7 +63,7 @@ async fn create_group() -> impl Responder {
     summary = "Update group (Not Implemented)",
     description = "Update an existing group - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[put("")]
@@ -81,7 +81,7 @@ async fn update_group() -> impl Responder {
         ("id" = String, Path, description = "Group ID to delete")
     ),
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[delete("/{id}")]

crates/backend/src/controller/project.rs

@@ -22,8 +22,8 @@ pub fn setup(cfg: &mut actix_web::web::ServiceConfig) {
     summary = "Get all projects",
     description = "Retrieve a list of all projects",
     responses(
-        (status = 200, description = "List of projects retrieved successfully", body = Vec<entity::project::Model>),
+        (status = 200, description = "List of projects retrieved successfully", body = Vec<entity::project::Model>, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[get("")]
@@ -45,9 +45,9 @@ async fn get_projects(
         ("id" = String, Path, description = "Project ID")
     ),
     responses(
-        (status = 200, description = "Project retrieved successfully", body = entity::project::Model),
+        (status = 200, description = "Project retrieved successfully", body = entity::project::Model, content_type = "application/json"),
-        (status = 404, description = "Project not found", body = String),
+        (status = 404, description = "Project not found", body = String, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[get("/{id}")]
@@ -70,9 +70,9 @@ async fn get_project(
     description = "Create a new project with the provided details",
     request_body = CreateProject,
     responses(
-        (status = 200, description = "Project created successfully", body = entity::project::Model),
+        (status = 200, description = "Project created successfully", body = entity::project::Model, content_type = "application/json"),
-        (status = 400, description = "Invalid request data or validation error", body = String),
+        (status = 400, description = "Invalid request data or validation error", body = String, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[post("")]
@@ -97,10 +97,10 @@ async fn create_project(
     ),
     request_body = CreateProject,
     responses(
-        (status = 200, description = "Project updated successfully", body = entity::project::Model),
+        (status = 200, description = "Project updated successfully", body = entity::project::Model, content_type = "application/json"),
-        (status = 400, description = "Invalid request data or validation error", body = String),
+        (status = 400, description = "Invalid request data or validation error", body = String, content_type = "application/json"),
-        (status = 404, description = "Project not found", body = String),
+        (status = 404, description = "Project not found", body = String, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[put("/{id}")]
@@ -126,9 +126,9 @@ async fn update_project(
         ("id" = String, Path, description = "Project ID to delete")
     ),
     responses(
-        (status = 200, description = "Project deleted successfully", body = String),
+        (status = 200, description = "Project deleted successfully", body = String, content_type = "application/json"),
-        (status = 404, description = "Project not found", body = String),
+        (status = 404, description = "Project not found", body = String, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[delete("/{id}")]

crates/backend/src/controller/template.rs

@@ -15,7 +15,7 @@ pub fn setup(cfg: &mut actix_web::web::ServiceConfig) {
     summary = "Get all templates (Not Implemented)",
     description = "Retrieve a list of all templates - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[get("")]
@@ -33,7 +33,7 @@ async fn get_templates() -> impl Responder {
         ("id" = String, Path, description = "Template ID")
     ),
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[get("/{id}")]
@@ -48,7 +48,7 @@ async fn get_template() -> impl Responder {
     summary = "Create template (Not Implemented)",
     description = "Create a new template - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[post("")]
@@ -63,7 +63,7 @@ async fn create_template() -> impl Responder {
     summary = "Update template (Not Implemented)",
     description = "Update an existing template - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[put("")]
@@ -81,7 +81,7 @@ async fn update_template() -> impl Responder {
         ("id" = String, Path, description = "Template ID to delete")
     ),
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[delete("/{id}")]

crates/backend/src/controller/user.rs

@@ -1,8 +1,8 @@
 use crate::{Database, entity, error::ApiError};
 use actix_web::{Responder, delete, get, post, put, web};
 use serde::Deserialize;
-use validator::Validate;
 use utoipa::ToSchema;
+use validator::Validate;
 
 pub fn setup(cfg: &mut actix_web::web::ServiceConfig) {
     cfg.service(get_users)
@@ -30,8 +30,8 @@ pub struct CreateUser {
     summary = "Get all users",
     description = "Retrieve a list of all users",
     responses(
-        (status = 200, description = "List of users retrieved successfully", body = Vec<entity::user::Model>),
+        (status = 200, description = "List of users retrieved successfully", body = Vec<entity::user::Model>, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[get("")]
@@ -52,9 +52,9 @@ async fn get_users(
         ("id" = String, Path, description = "User ID")
     ),
     responses(
-        (status = 200, description = "User retrieved successfully", body = entity::user::Model),
+        (status = 200, description = "User retrieved successfully", body = entity::user::Model, content_type = "application/json"),
-        (status = 404, description = "User not found", body = String),
+        (status = 404, description = "User not found", body = String, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[get("/{id}")]
@@ -75,9 +75,9 @@ async fn get_user(
     description = "Create a new user with username, name, and password",
     request_body = CreateUser,
     responses(
-        (status = 200, description = "User created successfully", body = entity::user::Model),
+        (status = 200, description = "User created successfully", body = entity::user::Model, content_type = "application/json"),
-        (status = 400, description = "Invalid request data or validation error", body = String),
+        (status = 400, description = "Invalid request data or validation error", body = String, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[post("")]
@@ -100,7 +100,7 @@ async fn create_user(
     summary = "Update user (Not Implemented)",
     description = "Update user information - currently not implemented",
     responses(
-        (status = 501, description = "Not implemented", body = String)
+        (status = 501, description = "Not implemented", body = String, content_type = "application/json")
     )
 )]
 #[put("")]
@@ -118,9 +118,9 @@ async fn update_user() -> impl Responder {
         ("id" = String, Path, description = "User ID to delete")
     ),
     responses(
-        (status = 200, description = "User deleted successfully", body = String),
+        (status = 200, description = "User deleted successfully", body = String, content_type = "application/json", example = "User 123e4567-e89b-12d3-a456-426614174000 deleted"),
-        (status = 404, description = "User not found", body = String),
+        (status = 404, description = "User not found", body = String, content_type = "application/json"),
-        (status = 500, description = "Internal server error", body = String)
+        (status = 500, description = "Internal server error", body = String, content_type = "application/json")
     )
 )]
 #[delete("/{id}")]