feat: add error handling for duplicated semantic ID and label name

backend/feature/post/src/application/error/post_error.rs

@@ -5,6 +5,8 @@ pub enum PostError {
     NotFound,
     Unauthorized,
     InvalidSemanticId,
+    DuplicatedSemanticId,
+    DuplicatedLabelName,
     Unexpected(anyhow::Error),
 }
 
@@ -17,6 +19,8 @@ impl Display for PostError {
                 f,
                 "Semantic ID shouldn't be numeric and must conform to `^[0-9a-zA-Z_\\-]+$`"
             ),
+            PostError::DuplicatedSemanticId => write!(f, "Semantic ID already exists"),
+            PostError::DuplicatedLabelName => write!(f, "Label name already exists"),
             PostError::Unexpected(e) => write!(f, "Unexpected error: {}", e),
         }
     }

backend/feature/post/src/framework/web/create_label_handler.rs

@@ -34,7 +34,10 @@ pub async fn create_label_handler(
         Ok(label) => HttpResponse::Created().json(label),
         Err(e) => match e {
             PostError::Unauthorized => HttpResponse::Unauthorized().finish(),
-            PostError::NotFound | PostError::InvalidSemanticId => {
+            PostError::DuplicatedLabelName => HttpResponse::Conflict().finish(),
+            PostError::NotFound
+            | PostError::InvalidSemanticId
+            | PostError::DuplicatedSemanticId => {
                 capture_anyhow(&anyhow!(e));
                 HttpResponse::InternalServerError().finish()
             }

backend/feature/post/src/framework/web/create_post_handler.rs

@@ -37,7 +37,8 @@ pub async fn create_post_handler(
         Err(e) => match e {
             PostError::Unauthorized => HttpResponse::Unauthorized().finish(),
             PostError::InvalidSemanticId => HttpResponse::BadRequest().finish(),
-            PostError::NotFound => {
+            PostError::DuplicatedSemanticId => HttpResponse::Conflict().finish(),
+            PostError::NotFound | PostError::DuplicatedLabelName => {
                 capture_anyhow(&anyhow!(e));
                 HttpResponse::InternalServerError().finish()
             }

backend/feature/post/src/framework/web/get_all_labels_handler.rs

@@ -24,7 +24,11 @@ pub async fn get_all_labels_handler(
     match result {
         Ok(labels) => HttpResponse::Ok().json(labels),
         Err(e) => match e {
-            PostError::NotFound | PostError::Unauthorized | PostError::InvalidSemanticId => {
+            PostError::NotFound
+            | PostError::Unauthorized
+            | PostError::InvalidSemanticId
+            | PostError::DuplicatedSemanticId
+            | PostError::DuplicatedLabelName => {
                 capture_anyhow(&anyhow!(e));
                 HttpResponse::InternalServerError().finish()
             }

backend/feature/post/src/framework/web/get_all_post_info_handler.rs

@@ -36,7 +36,11 @@ pub async fn get_all_post_info_handler(
     match result {
         Ok(post_info_list) => HttpResponse::Ok().json(post_info_list),
         Err(e) => match e {
-            PostError::NotFound | PostError::Unauthorized | PostError::InvalidSemanticId => {
+            PostError::NotFound
+            | PostError::Unauthorized
+            | PostError::InvalidSemanticId
+            | PostError::DuplicatedSemanticId
+            | PostError::DuplicatedLabelName => {
                 capture_anyhow(&anyhow!(e));
                 HttpResponse::InternalServerError().finish()
             }

backend/feature/post/src/framework/web/get_post_by_id_handler.rs

@@ -34,7 +34,9 @@ pub async fn get_post_by_id_handler(
         Err(e) => match e {
             PostError::NotFound => HttpResponse::NotFound().finish(),
             PostError::Unauthorized => HttpResponse::Unauthorized().finish(),
-            PostError::InvalidSemanticId => {
+            PostError::InvalidSemanticId
+            | PostError::DuplicatedSemanticId
+            | PostError::DuplicatedLabelName => {
                 capture_anyhow(&anyhow!(e));
                 HttpResponse::InternalServerError().finish()
             }

backend/feature/post/src/framework/web/update_label_handler.rs

@@ -40,7 +40,8 @@ pub async fn update_label_handler(
         Err(e) => match e {
             PostError::NotFound => HttpResponse::NotFound().finish(),
             PostError::Unauthorized => HttpResponse::Unauthorized().finish(),
-            PostError::InvalidSemanticId => {
+            PostError::DuplicatedLabelName => HttpResponse::Conflict().finish(),
+            PostError::InvalidSemanticId | PostError::DuplicatedSemanticId => {
                 capture_anyhow(&anyhow!(e));
                 HttpResponse::InternalServerError().finish()
             }

backend/feature/post/src/framework/web/update_post_handler.rs

@@ -1,4 +1,5 @@
 use actix_web::{HttpResponse, Responder, web};
+use anyhow::anyhow;
 use auth::framework::web::auth_middleware::UserId;
 use sentry::integrations::anyhow::capture_anyhow;
 
@@ -39,7 +40,12 @@ pub async fn update_post_handler(
         Err(e) => match e {
             PostError::NotFound => HttpResponse::NotFound().finish(),
             PostError::Unauthorized => HttpResponse::Unauthorized().finish(),
+            PostError::DuplicatedSemanticId => HttpResponse::Conflict().finish(),
             PostError::InvalidSemanticId => HttpResponse::BadRequest().finish(),
+            PostError::DuplicatedLabelName => {
+                capture_anyhow(&anyhow!(e));
+                HttpResponse::InternalServerError().finish()
+            }
             PostError::Unexpected(e) => {
                 capture_anyhow(&e);
                 HttpResponse::InternalServerError().finish()