Init

1 files changed, 70 insertions, 0 deletions

diff --git a/src/errors.rs b/src/errors.rs
new file mode 100644
index 0000000..e0a70b5
--- /dev/null
+++ b/src/errors.rs
@@ -0,0 +1,70 @@
+use axum::{
+    http::StatusCode,
+    response::{IntoResponse, Response},
+    Json,
+};
+use serde_json::json;
+
+/// All errors raised by the web app
+pub enum AppError {
+    /// Database error
+    Database,
+    /// Generic bad request. It is handled with a message value
+    BadRequest(String),
+    /// Not found error
+    NotFound(String),
+    /// Raised when a token is not good created
+    TokenCreation,
+    /// Raised when a passed token is not valid
+    InvalidToken,
+    /// Raised if an user wants to do something can't do
+    Unauthorized,
+}
+
+/// Use `AppError` as response for an endpoint
+impl IntoResponse for AppError {
+    /// Matches `AppError` into a tuple of status and error message.
+    /// The response will be a JSON in the format of:
+    /// ```json
+    /// { "error": "<message>" }
+    /// ```
+    fn into_response(self) -> Response {
+        let (status, error_message) = match self {
+            AppError::Database => (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                "Error with database connection".to_string(),
+            ),
+            AppError::BadRequest(value) => (StatusCode::BAD_REQUEST, value),
+            AppError::NotFound(value) => (StatusCode::NOT_FOUND, value),
+            AppError::TokenCreation => (
+                StatusCode::INTERNAL_SERVER_ERROR,
+                "Token creation error".to_string(),
+            ),
+            AppError::InvalidToken => (StatusCode::BAD_REQUEST, "Invalid token".to_string()),
+            AppError::Unauthorized => (
+                StatusCode::UNAUTHORIZED,
+                "Can't perform this action".to_string(),
+            ),
+        };
+
+        let body = Json(json!({
+            "error": error_message,
+        }));
+
+        (status, body).into_response()
+    }
+}
+
+/// Raise a generic error from a string
+impl From<std::string::String> for AppError {
+    fn from(error: std::string::String) -> AppError {
+        AppError::BadRequest(error)
+    }
+}
+
+/// Raise a generic io error
+impl From<std::io::Error> for AppError {
+    fn from(error: std::io::Error) -> Self {
+        AppError::BadRequest(error.to_string())
+    }
+}