1 files changed, 50 insertions, 0 deletions
diff --git a/crates/rocie-server/src/storage/sql/get/barcode/mod.rs b/crates/rocie-server/src/storage/sql/get/barcode/mod.rs
new file mode 100644
index 0000000..7b656b1
--- /dev/null
+++ b/crates/rocie-server/src/storage/sql/get/barcode/mod.rs
@@ -0,0 +1,50 @@
+use crate::{
+    app::App,
+    storage::sql::{
+        barcode::{Barcode, BarcodeId, UnitAmount},
+        unit::UnitId,
+    },
+};
+
+use sqlx::query;
+
+impl Barcode {
+    pub(crate) async fn from_id(app: &App, id: BarcodeId) -> Result<Option<Self>, from_id::Error> {
+        let db_id = id.to_db();
+
+        let record = query!(
+            "
+        SELECT product_id, amount, unit
+        FROM barcodes
+        WHERE id = ?
+",
+            db_id
+        )
+        .fetch_optional(&app.db)
+        .await?;
+
+        if let Some(record) = record {
+            Ok(Some(Self {
+                id,
+                amount: UnitAmount {
+                    value: u32::try_from(record.amount).expect("Is strictly positive"),
+                    unit: UnitId::from_db(&record.unit),
+                },
+            }))
+        } else {
+            Ok(None)
+        }
+    }
+}
+
+pub(crate) mod from_id {
+    use actix_web::ResponseError;
+
+    #[derive(thiserror::Error, Debug)]
+    pub(crate) enum Error {
+        #[error("Failed to execute the sql query")]
+        SqlError(#[from] sqlx::Error),
+    }
+
+    impl ResponseError for Error {}
+}