Remove silent unwrap in data providers

src/data_provider/history.rs

@@ -30,17 +30,25 @@ fn parse_history_items(strings: Vec<String>) -> Vec<HistoryItem> {
     let mut items = Vec::with_capacity(strings.len());
     for string in strings {
         if let [time, word, mode, before, after] = string.split(';').collect::<Vec<&str>>()[..] {
+            let id = word.parse::<Id>();
+            if id.is_err(){
+                continue;
+            }
+            let id = id.unwrap();
+            if !id.is_valid() {
+                continue;
+            }
             items.push(HistoryItem {
-                timestamp: DateTime::from_timestamp(time.parse().unwrap(), 0).unwrap(),
-                word_id: word.parse::<Id>().unwrap(),
-                mode: match mode.parse::<u8>().unwrap() {
+                timestamp: DateTime::from_timestamp(time.parse().unwrap_or_default(), 0).unwrap(),
+                word_id: id,
+                mode: match mode.parse::<u8>().unwrap_or_default() {
                     2 => WordOpenMode::Hard,
                     3 => WordOpenMode::Ok,
                     4 => WordOpenMode::Easy,
                     _ => WordOpenMode::None,
                 },
-                before: before.parse().unwrap(),
-                after: after.parse().unwrap(),
+                before: before.parse().unwrap_or_default(),
+                after: after.parse().unwrap_or_default(),
             });
         }
     }