simpify db query code

src/download.rs

@@ -7,12 +7,8 @@ use actix_web::{
     web, Error, HttpRequest, HttpResponse,
 };
 use async_std::{fs, path::Path};
-use futures::TryStreamExt;
 use mime::Mime;
-use sqlx::{
-    postgres::{PgPool, PgRow},
-    Row,
-};
+use sqlx::postgres::PgPool;
 use url::Url;
 
 use crate::deleter;
@@ -54,24 +50,17 @@ async fn load_file_info(
     id: &str,
     db: &web::Data<sqlx::Pool<sqlx::Postgres>>,
 ) -> Result<(String, String, String, bool), Error> {
-    let mut rows = sqlx::query(
+    sqlx::query_as(
         "SELECT file_id, file_name, kind, delete_on_download from files WHERE file_id = $1",
     )
     .bind(id)
-    .fetch(db.as_ref());
-    let row: PgRow = rows
-        .try_next()
-        .await
-        .map_err(|db_err| {
-            log::error!("could not run select statement {:?}", db_err);
-            error::ErrorInternalServerError("could not run select statement")
-        })?
-        .ok_or_else(|| error::ErrorNotFound("file does not exist or has expired"))?;
-    let file_id: String = row.get("file_id");
-    let file_name: String = row.get("file_name");
-    let file_kind: String = row.get("kind");
-    let delete_on_download: bool = row.get("delete_on_download");
-    Ok((file_id, file_name, file_kind, delete_on_download))
+    .fetch_optional(db.as_ref())
+    .await
+    .map_err(|db_err| {
+        log::error!("could not run select statement {:?}", db_err);
+        error::ErrorInternalServerError("could not run select statement")
+    })?
+    .ok_or_else(|| error::ErrorNotFound("file does not exist or has expired"))
 }
 
 fn get_content_type(path: &Path) -> Mime {