// rocie - An enterprise grocery management system
//
// Copyright (C) 2026 Benedikt Peetz <benedikt.peetz@b-peetz.de>
// SPDX-License-Identifier: GPL-3.0-or-later
//
// This file is part of Rocie.
//
// You should have received a copy of the License along with this program.
// If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.

use crate::{
    app::App,
    storage::sql::{
        barcode::{Barcode, BarcodeId},
        unit::{UnitAmount, 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 {}
}