src/data_provider/card_stats.rs

@@ -93,7 +93,7 @@ pub fn delete_stats(stat: &[CardStatistics], connection: &Connection) {
         .join(", ");
     connection
         .execute(
-            format!("DELETE FROM card_stats WHERE id in {ids}").as_str(),
+            format!("DELETE FROM card_stats WHERE id in ({ids})").as_str(),
             (),
         )
         .unwrap();

src/data_provider/history.rs

@@ -39,7 +39,7 @@ fn parse_history_items(strings: Vec<String>) -> Vec<HistoryItem> {
                 continue;
             }
             items.push(HistoryItem {
-                timestamp: DateTime::from_timestamp(time.parse().unwrap_or_default(), 0).unwrap(),
+                timestamp: DateTime::from_timestamp(time.parse().unwrap_or_default(), 0).unwrap_or_default(),
                 word_id: id,
                 mode: match mode.parse::<u8>().unwrap_or_default() {
                     2 => WordOpenMode::Hard,

src/data_provider/web_api.rs

@@ -7,10 +7,10 @@ use zstd::{DEFAULT_COMPRESSION_LEVEL, Decoder, Encoder};
 // const API_URL: &str = "http://127.0.0.1:8089/";
 const API_URL: &str = "https://learning.micialware.ru/";
 
-pub async fn send_data(id: String) {
+pub async fn send_data(id: String) -> Result<(), ()> {
     let path = app_data_dir();
     let db_file = path.join("data.db");
-    let data = tokio::fs::read(db_file).await.unwrap();
+    let data = tokio::fs::read(db_file).await.map_err(|_| ())?;
     let data = compress(data);
 
     let api_url = API_URL.to_string();
@@ -21,12 +21,11 @@ pub async fn send_data(id: String) {
         .post(&id_url)
         .body(data)
         .send()
-        .await
-        .unwrap()
+        .await.map_err(|_| ())?
         .text()
-        .await
-        .unwrap();
+        .await.map_err(|_| ())?;
     set_local_version(new_version.parse::<u32>().unwrap()).await;
+    Ok(())
 }
 
 fn compress(data: Vec<u8>) -> Vec<u8> {
@@ -35,18 +34,16 @@ fn compress(data: Vec<u8>) -> Vec<u8> {
     encoder.finish().unwrap()
 }
 
-pub async fn load_data(id: String, temp: bool) {
+pub async fn load_data(id: String, temp: bool) -> Result<(), ()> {
     let api_url = API_URL.to_string();
     let id_url = format!("{api_url}download/{id}");
     let client = reqwest::Client::new();
     let data = client
         .get(&id_url)
         .send()
-        .await
-        .unwrap()
+        .await.map_err(|_| ())?
         .bytes()
-        .await
-        .unwrap()
+        .await.map_err(|_| ())?
         .to_vec();
     let data = decompress(data);
 
@@ -54,18 +51,17 @@ pub async fn load_data(id: String, temp: bool) {
     let file_name = if temp { "data.db.tmp" } else { "data.db" };
     let db_file = path.join(file_name);
 
-    tokio::fs::write(db_file, data).await.unwrap();
+    tokio::fs::write(db_file, data).await.map_err(|_| ())?;
 
     let version_url = format!("{API_URL}{id}/version");
     let version = client
         .get(&version_url)
         .send()
-        .await
-        .unwrap()
+        .await.map_err(|_| ())?
         .text()
-        .await
-        .unwrap();
-    set_local_version(version.parse::<u32>().unwrap()).await;
+        .await.map_err(|_| ())?;
+    set_local_version(version.parse::<u32>().map_err(|_| ())?).await;
+    Ok(())
 }
 
 pub fn decompress(data: Vec<u8>) -> Vec<u8> {
@@ -78,7 +74,7 @@ pub fn decompress(data: Vec<u8>) -> Vec<u8> {
     decompressed
 }
 
-pub async fn first_sync() -> String {
+pub async fn first_sync() -> Result<String, ()> {
     let id_url = API_URL.to_string() + "generate";
 
     let client = reqwest::Client::new();
@@ -86,12 +82,12 @@ pub async fn first_sync() -> String {
         .get(&id_url)
         .send()
         .await
-        .unwrap()
+        .map_err(|_| ())?
         .text()
         .await
-        .unwrap();
+        .map_err(|_| ())?;
     println!("id: {}", id);
-    id
+    Ok(id)
 }
 
 pub async fn get_web_version(key: &str) -> Result<u32, reqwest::Error> {
@@ -112,7 +108,7 @@ pub async fn get_local_version() -> u32 {
             .read_to_string(&mut data)
             .await
             .unwrap();
-        return data.parse::<u32>().unwrap();
+        return data.parse::<u32>().unwrap_or_default();
     }
 
     let mut file = OpenOptions::new()

src/dictionary.rs

@@ -1,6 +1,6 @@
 use crate::data_provider::words::{delete_group, delete_word, update_group, update_word};
 use crate::dictionary::DictionaryMessage::*;
-use crate::dictionary_test::DictionaryQuizState;
+use crate::dictionary_quiz::DictionaryQuizState;
 use crate::import::ImportState;
 use crate::lang::{WordData, WordGroup};
 use crate::navigation::Page::{Import, Word};

src/dictionary_quiz.rs

@@ -1,6 +1,6 @@
 use crate::RootMessage;
 use crate::dictionary::split_with_coma;
-use crate::dictionary_test::DictionaryQuizMessage::*;
+use crate::dictionary_quiz::DictionaryQuizMessage::*;
 use crate::lang::WordData;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::*;

src/main.rs

@@ -1,7 +1,7 @@
 #![windows_subsystem = "windows"]
 mod data_provider;
 mod dictionary;
-mod dictionary_test;
+mod dictionary_quiz;
 mod history;
 pub mod import;
 mod lang;

src/navigation.rs

@@ -4,7 +4,7 @@ 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_test::{DictionaryQuizMessage, DictionaryQuizState};
+use crate::dictionary_quiz::{DictionaryQuizMessage, DictionaryQuizState};
 use crate::history::{HistoryMessage, HistoryState};
 use crate::import::{ImportMessage, ImportState};
 use crate::lang::Id;

src/sync.rs

@@ -4,7 +4,7 @@ use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page};
 use crate::styling::*;
 use crate::sync::SyncMessage::*;
-use crate::{AppState, RootMessage, fill_state};
+use crate::{fill_state, AppState, RootMessage};
 use iced::widget::button::danger;
 use iced::widget::container::rounded_box;
 use iced::widget::{button, column, container, progress_bar, row, space, text, toggler};
@@ -59,7 +59,12 @@ impl NavigatedPage<SyncMessage> for SyncState {
                     .map(|_val: String| RootMessage::Sync(KeyCopied));
             }
             InitSync => {
-                return Task::perform(first_sync(), |id| RootMessage::Sync(IdReceived(id)));
+                return Task::perform(first_sync(), |id| {
+                    match id {
+                        Ok(id) => RootMessage::Sync(IdReceived(id)),
+                        Err(_) => RootMessage::None
+                    }
+                });
             }
             GetKey => {
                 return iced::clipboard::read()