tsk-69: Retrieve username from the db (#76)

Closes #69

Reviewed-on: phoenix/icarus_auth#76
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

src/repo/service.rs

@@ -0,0 +1,50 @@
+use sqlx::Row;
+
+pub async fn valid_passphrase(
+    pool: &sqlx::PgPool,
+    passphrase: &String,
+) -> Result<(uuid::Uuid, String, time::OffsetDateTime), sqlx::Error> {
+    let result = sqlx::query(
+        r#"
+        SELECT id, username, date_created FROM "passphrase" WHERE passphrase = $1
+        "#,
+    )
+    .bind(passphrase)
+    .fetch_one(pool)
+    .await;
+
+    match result {
+        Ok(row) => {
+            let id: uuid::Uuid = row.try_get("id")?;
+            let username: String = row.try_get("username")?;
+            let date_created: Option<time::OffsetDateTime> = row.try_get("date_created")?;
+
+            Ok((id, username, date_created.unwrap()))
+        }
+        Err(err) => Err(err),
+    }
+}
+
+pub async fn get_passphrase(
+    pool: &sqlx::PgPool,
+    id: &uuid::Uuid,
+) -> Result<(String, String, time::OffsetDateTime), sqlx::Error> {
+    let result = sqlx::query(
+        r#"
+        SELECT username, passphrase, date_created FROM "passphrase" WHERE id = $1;
+        "#,
+    )
+    .bind(id)
+    .fetch_one(pool)
+    .await;
+
+    match result {
+        Ok(row) => {
+            let username: String = row.try_get("username")?;
+            let passphrase: String = row.try_get("passphrase")?;
+            let date_created: time::OffsetDateTime = row.try_get("date_created")?;
+            Ok((username, passphrase, date_created))
+        }
+        Err(err) => Err(err),
+    }
+}