Register service user endpoint (#5)

Reviewed-on: phoenix/textsender-auth#5

src/repo/service.rs

@@ -48,3 +48,82 @@ pub async fn get_passphrase(
         Err(err) => Err(err),
     }
 }
+
+pub async fn get_with_username(
+    pool: &sqlx::PgPool,
+    username: &String,
+) -> Result<textsender_models::user::ServiceUser, sqlx::Error> {
+    match sqlx::query(
+        r#"SELECT id, username, passphrase, created, last_login FROM "service_user" WHERE username = $1"#
+        ).bind(username)
+        .fetch_one(pool).await {
+        Ok(row) => {
+            let service_user = textsender_models::user::ServiceUser {
+                id: row.try_get("id")?,
+                username: row.try_get("username")?,
+                passphrase: row.try_get("passphrase")?,
+                created: row.try_get("created")?,
+                last_login: row.try_get("last_login")?,
+                salt_id: row.try_get("salt_id")?
+            };
+
+            Ok(service_user)
+        }
+        Err(err) => {
+            Err(err)
+        }
+    }
+}
+
+pub async fn insert(
+    pool: &sqlx::PgPool,
+    service_user: &textsender_models::user::ServiceUser,
+) -> Result<time::OffsetDateTime, sqlx::Error> {
+    match sqlx::query(
+        r#"INSERT INTO "service_user" (username, passphrase, salt_id)
+            VALUES ($1, $2, $3)
+            RETURNING created
+        "#,
+    )
+    .bind(&service_user.username)
+    .bind(&service_user.passphrase)
+    .bind(service_user.salt_id)
+    .fetch_one(pool)
+    .await
+    {
+        Ok(row) => {
+            let created: time::OffsetDateTime = row.try_get("created")?;
+            Ok(created)
+        }
+        Err(err) => Err(err),
+    }
+}
+
+pub async fn exists(pool: &sqlx::PgPool, service_username: &String) -> Result<bool, sqlx::Error> {
+    let result = sqlx::query(
+        r#"
+    SELECT 1 FROM "service_user" WHERE username = $1
+    "#,
+    )
+    .bind(service_username)
+    .fetch_optional(pool)
+    .await;
+
+    match result {
+        Ok(r) => match r {
+            Some(row) => {
+                if row.is_empty() {
+                    Ok(false)
+                } else {
+                    Ok(true)
+                }
+            }
+            None => Ok(false),
+        },
+        Err(e) => {
+            eprintln!("What??");
+            eprintln!("Error: {e:?}");
+            Err(e)
+        }
+    }
+}