Handler to send emails to confirmed subscribers

src/routes/subscriptions.rs

@@ -24,7 +24,10 @@ fn generate_subscription_token() -> String {
         .collect()
 }
 
-fn error_chain_fmt(e: &impl std::error::Error, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+pub fn error_chain_fmt(
+    e: &impl std::error::Error,
+    f: &mut std::fmt::Formatter,
+) -> std::fmt::Result {
     writeln!(f, "{}", e)?;
     let mut current = e.source();
     while let Some(cause) = current {
@@ -37,24 +40,12 @@ fn error_chain_fmt(e: &impl std::error::Error, f: &mut std::fmt::Formatter) -> s
     Ok(())
 }
 
-// #[derive(thiserror::Error)]
-// pub enum SubscribeError {
-//     #[error("Failed to store the confirmation token for a new subscriber.")]
-//     StoreToken(#[from] StoreTokenError),
-//     #[error("A database error occured.")]
-//     Database(#[from] sqlx::Error),
-//     #[error("Failed to send a confirmation email.")]
-//     SendEmail(#[from] reqwest::Error),
-//     #[error("{0}")]
-//     Validation(String),
-// }
-
 #[derive(thiserror::Error)]
 pub enum SubscribeError {
     #[error(transparent)]
     UnexpectedError(#[from] anyhow::Error),
     #[error("{0}")]
-    Validation(String),
+    ValidationError(String),
 }
 
 impl std::fmt::Debug for SubscribeError {
@@ -72,15 +63,9 @@ impl IntoResponse for SubscribeError {
 
         tracing::error!("{:?}", self);
 
-        // let status = match self {
-        //     SubscribeError::StoreToken(_)
-        //     | SubscribeError::Database(_)
-        //     | SubscribeError::SendEmail(_) => StatusCode::INTERNAL_SERVER_ERROR,
-        //     SubscribeError::Validation(_) => StatusCode::BAD_REQUEST,
-        // };
         let status = match self {
             SubscribeError::UnexpectedError(_) => StatusCode::INTERNAL_SERVER_ERROR,
-            SubscribeError::Validation(_) => StatusCode::BAD_REQUEST,
+            SubscribeError::ValidationError(_) => StatusCode::BAD_REQUEST,
         };
         let message = "An internal server error occured.";
         (status, Json(ErrorResponse { message })).into_response()
@@ -107,7 +92,7 @@ pub async fn subscribe(
         .begin()
         .await
         .context("Failed to acquire a Postgres connection from the pool.")?;
-    let new_subscriber = form.try_into().map_err(SubscribeError::Validation)?;
+    let new_subscriber = form.try_into().map_err(SubscribeError::ValidationError)?;
     let subscriber_id = insert_subscriber(&mut transaction, &new_subscriber)
         .await
         .context("Failed to insert new subscriber in the database.")?;