Parse data from incoming request

src/routes/subscriptions.rs

@@ -1,3 +1,4 @@
+use crate::domain::{NewSubscriber, SubscriberEmail, SubscriberName};
 use axum::{Form, extract::State, http::StatusCode, response::IntoResponse};
 use chrono::Utc;
 use serde::Deserialize;
@@ -14,9 +15,16 @@ use uuid::Uuid;
 )]
 pub async fn subscribe(
     State(connection): State<PgPool>,
-    form: Form<FormData>,
+    Form(form): Form<FormData>,
 ) -> impl IntoResponse {
-    if insert_subscriber(&connection, &form).await.is_err() {
+    let new_subscriber = match form.try_into() {
+        Ok(subscriber) => subscriber,
+        Err(_) => return StatusCode::BAD_REQUEST,
+    };
+    if insert_subscriber(&connection, &new_subscriber)
+        .await
+        .is_err()
+    {
         StatusCode::INTERNAL_SERVER_ERROR
     } else {
         StatusCode::OK
@@ -25,11 +33,11 @@ pub async fn subscribe(
 
 #[tracing::instrument(
     name = "Saving new subscriber details in the database",
-    skip(connection, form)
+    skip(connection, new_subscriber)
 )]
 pub async fn insert_subscriber(
     connection: &PgPool,
-    form: &Form<FormData>,
+    new_subscriber: &NewSubscriber,
 ) -> Result<(), sqlx::Error> {
     sqlx::query!(
         r#"
@@ -37,8 +45,8 @@ pub async fn insert_subscriber(
         VALUES ($1, $2, $3, $4);
         "#,
         Uuid::new_v4(),
-        form.email,
-        form.name,
+        new_subscriber.email.as_ref(),
+        new_subscriber.name.as_ref(),
         Utc::now()
     )
     .execute(connection)
@@ -56,3 +64,13 @@ pub struct FormData {
     name: String,
     email: String,
 }
+
+impl TryFrom<FormData> for NewSubscriber {
+    type Error = String;
+
+    fn try_from(value: FormData) -> Result<Self, Self::Error> {
+        let name = SubscriberName::parse(value.name)?;
+        let email = SubscriberEmail::parse(value.email)?;
+        Ok(Self { name, email })
+    }
+}