Hiding the restart with wrongs button when there are no wrongs and made the info element react to the actual number of questions

src/main.rs

@@ -88,6 +88,8 @@ fn get_rand_questions() -> Questions {
 	// Randomize the questions list
 	questions.shuffle(&mut rng);
 
+	questions.count = questions.questions.len();
+
 	questions
 }
 
@@ -145,6 +147,7 @@ fn App() -> Element {
 
 				let wrongs = questions_lock.wrong_questions.to_vec();
 
+				questions_lock.count = wrongs.len();
 				questions_lock.questions = wrongs;
 				questions_lock.wrong_questions.clear();
 
@@ -379,7 +382,7 @@ pub fn Info(
 	correct_questions: Signal<i32>,
 	wrong_questions: Signal<i32>,
 ) -> Element {
-	let total_questions = get_questions().len();
+	let total_questions = questions().count;
 	let current_question = use_memo(move || questions().len());
 	let left_questions = use_memo(move || total_questions - current_question());
 
@@ -430,6 +433,7 @@ pub fn Report(
 					},
 					"Restart"
 				},
+				if wrong_questions > 0 {
 					button {
 						onclick: move |_| {
 							phase.set(Phase::RestartWrongs);
@@ -440,3 +444,4 @@ pub fn Report(
 			}
 		}
 	}
+}

src/models.rs

@@ -17,6 +17,9 @@ pub struct Questions {
 
 	#[serde(default, skip)]
 	pub wrong_questions: Vec<Question>,
+
+	#[serde(default, skip)]
+	pub count: usize,
 }
 
 impl AddAssign for Questions {