use actix_web::{HttpResponse, Responder, Result, get, web};

use crate::{
    app::App,
    storage::sql::{product::{ProductId, ProductIdStub}, product_amount::ProductAmount},
};

/// Get the amount of an product
#[utoipa::path(
    responses(
        (
            status = OK,
            description = "Product found in database and amount fetched",
            body = ProductAmount
        ),
        (
            status = NOT_FOUND,
            description = "Product not found in database"
        ),
        (
            status = INTERNAL_SERVER_ERROR,
            description = "Server encountered error",
            body = String
        )
    ),
    params(
        (
            "id" = ProductId,
            description = "Product id"
        ),
    )
)]
#[get("/inventory/{id}")]
pub(crate) async fn amount_by_id(
    app: web::Data<App>,
    id: web::Path<ProductIdStub>,
) -> Result<impl Responder> {
    let id = id.into_inner();

    match ProductAmount::from_id(&app, id.into()).await? {
        Some(product) => Ok(HttpResponse::Ok().json(product)),
        None => Ok(HttpResponse::NotFound().finish()),
    }
}