more refactoring

src/error.rs

@@ -0,0 +1,53 @@
+use axum::{
+    Json,
+    http::StatusCode,
+    response::{IntoResponse, Response},
+};
+use serde_json::json;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum AppError {
+    #[error("Database error: {0}")]
+    Database(#[from] sea_orm::DbErr),
+
+    #[error("Configuration error: {0}")]
+    Config(String),
+
+    #[error("Not found: {0}")]
+    NotFound(String),
+
+    #[error("Unauthorized: {0}")]
+    Unauthorized(String),
+
+    #[error("Internal server error: {0}")]
+    Internal(String),
+
+    #[error("Network error: {0}")]
+    Network(#[from] reqwest::Error),
+
+    #[error("Invalid request: {0}")]
+    InvalidRequest(String),
+}
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, error_message) = match self {
+            AppError::Database(err) => (StatusCode::INTERNAL_SERVER_ERROR, err.to_string()),
+            AppError::Config(err) => (StatusCode::INTERNAL_SERVER_ERROR, err),
+            AppError::NotFound(err) => (StatusCode::NOT_FOUND, err),
+            AppError::Unauthorized(err) => (StatusCode::UNAUTHORIZED, err),
+            AppError::Internal(err) => (StatusCode::INTERNAL_SERVER_ERROR, err),
+            AppError::Network(err) => (StatusCode::BAD_GATEWAY, err.to_string()),
+            AppError::InvalidRequest(err) => (StatusCode::BAD_REQUEST, err),
+        };
+
+        let body = Json(json!({
+            "error": error_message,
+        }));
+
+        (status, body).into_response()
+    }
+}
+
+pub type AppResult<T> = Result<T, AppError>;