add: ability to add user to stack through block list ui

crates/app/src/routes/api/v1/stacks.rs

@@ -211,6 +211,10 @@ pub async fn add_user_request(
         Err(e) => return Json(e.into()),
     };
 
+    if stack.users.contains(&other_user.id) {
+        return Json(Error::MiscError("This user is already in this stack".to_string()).into());
+    }
+
     stack.users.push(other_user.id);
 
     // check number of stacks

crates/app/src/routes/pages/mod.rs

@@ -131,6 +131,7 @@ pub fn routes() -> Router {
         .route("/stacks", get(stacks::list_request))
         .route("/stacks/{id}", get(stacks::feed_request))
         .route("/stacks/{id}/manage", get(stacks::manage_request))
+        .route("/stacks/add_user/{id}", get(stacks::add_user_request))
         // journals
         .route("/journals", get(journals::redirect_request))
         .route("/journals/{journal}/{note}", get(journals::app_request))

crates/app/src/routes/pages/stacks.rs

@@ -157,3 +157,41 @@ pub async fn manage_request(
     // return
     Ok(Html(data.1.render("stacks/manage.html", &context).unwrap()))
 }
+
+/// `/stacks/add_user`
+pub async fn add_user_request(
+    jar: CookieJar,
+    Path(id): Path<usize>,
+    Extension(data): Extension<State>,
+) -> impl IntoResponse {
+    let data = data.read().await;
+    let user = match get_user_from_token!(jar, data.0) {
+        Some(ua) => ua,
+        None => {
+            return Err(Html(
+                render_error(Error::NotAllowed, &jar, &data, &None).await,
+            ));
+        }
+    };
+
+    let add_user = match data.0.get_user_by_id(id).await {
+        Ok(ua) => ua,
+        Err(e) => return Err(Html(render_error(e, &jar, &data, &None).await)),
+    };
+
+    let stacks = match data.0.get_stacks_by_user(user.id).await {
+        Ok(p) => p,
+        Err(e) => return Err(Html(render_error(e, &jar, &data, &Some(user)).await)),
+    };
+
+    let lang = get_lang!(jar, data.0);
+    let mut context = initial_context(&data.0.0.0, lang, &Some(user)).await;
+
+    context.insert("stacks", &stacks);
+    context.insert("add_user", &add_user);
+
+    // return
+    Ok(Html(
+        data.1.render("stacks/add_user.html", &context).unwrap(),
+    ))
+}