Remove many unwrap

src/navigation.rs

@@ -3,7 +3,7 @@ use crate::data_provider::sqlite::{create_db, default_connection};
 use crate::data_provider::web_api::{
     get_local_version, get_web_version, load_data, set_local_version,
 };
-use crate::dictionary::{DictionaryMessage, DictionaryState, app_data_dir};
+use crate::dictionary::{app_data_dir, DictionaryMessage, DictionaryState};
 use crate::dictionary_test::{DictionaryQuizMessage, DictionaryQuizState};
 use crate::history::{HistoryMessage, HistoryState};
 use crate::import::{ImportMessage, ImportState};
@@ -23,7 +23,7 @@ use crate::sync::{SyncMessage, SyncState};
 use crate::view_navigation;
 use crate::word::{WordMessage, WordState};
 use crate::writing::{WritingMessage, WritingState};
-use crate::{AppState, fill_state};
+use crate::{fill_state, AppState};
 use chrono::NaiveDate;
 use hashbrown::HashMap;
 use iced::keyboard::Event;
@@ -126,7 +126,11 @@ impl ScreenState {
         let mut map = HashMap::new();
         for file in directory.read_dir().unwrap().flatten() {
             let mut vec = vec![];
-            let history_file_name = file.file_name().into_string().unwrap();
+            let history_file_name = match file.file_name().into_string() {
+                Err(_) => continue,
+                Ok(v) => v,
+            };
+
             let id: Id = history_file_name[4..history_file_name.len() - 12]
                 .parse::<Id>()
                 .unwrap();
@@ -303,7 +307,10 @@ macro_rules! message_navigation {
     ($msg:expr, $stack:expr, $state:expr) => {
         if let Some(new_page) = $state.navigate(&$msg) {
             if let Page::PreviousPage = new_page {
-                $stack.pop();
+                if $stack.len() > 1 {
+                    $stack.pop();
+                }
+
                 return (Task::<RootMessage>::none(), true);
             } else {
                 $stack.push(new_page);