diff --git a/Cargo.toml b/Cargo.toml
index 21a7579..9bb6112 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,11 +40,3 @@ panic = "abort"
 [dev-dependencies]
 criterion = { version = "0.8.2", features = ["html_reports"] }
 rustc-hash = "2.1.3"
-
-[[bench]]
-name = "map_bench"
-harness = false
-
-[[bench]]
-name = "repo_cache_bench"
-harness = false
diff --git a/benches/map_bench.rs b/benches/map_bench.rs
deleted file mode 100644
index dd70daf..0000000
--- a/benches/map_bench.rs
+++ /dev/null
@@ -1,126 +0,0 @@
-use criterion::{Criterion, criterion_group, criterion_main};
-use std::collections::HashMap as StdHashMap;
-use std::hint::black_box;
-
-use hashbrown::HashMap as BrownHashMap;
-
-const SIZES: [usize; 3] = [5, 10, 50];
-const QUERY_COUNT: usize = 4096;
-
-/// Детерминированный ключ ~17 символов, например "key_9e3779b9_0042".
-fn make_key(i: u64) -> String {
-    let h = i.wrapping_mul(0x9E37_79B9_7F4A_7C15);
-    format!("key_{:08x}_{:04}", h & 0xFFFF_FFFF, i)
-}
-
-// Для длинных ключей (пути/URL) замени на:
-// fn make_key(i: u64) -> String {
-//     format!(
-//         "/api/v2/users/{i}/settings/visibility_{:08x}",
-//         i.wrapping_mul(0x9E37_79B9)
-//     )
-// }
-
-fn make_vec(n: usize) -> Vec<(String, u64)> {
-    (0..n as u64).map(|i| (make_key(i), i)).collect()
-}
-
-fn make_std_map(data: &[(String, u64)]) -> StdHashMap<String, u64> {
-    data.iter().map(|(k, v)| (k.clone(), *v)).collect()
-}
-
-fn make_brown_map(data: &[(String, u64)]) -> BrownHashMap<String, u64> {
-    data.iter().map(|(k, v)| (k.clone(), *v)).collect()
-}
-
-fn make_queries(n: usize, with_misses: bool) -> Vec<String> {
-    let keys: Vec<String> = (0..n as u64).map(make_key).collect();
-    let missing = "__missing_key__".to_string();
-
-    (0..QUERY_COUNT)
-        .map(|i| {
-            if with_misses && i % 16 == 15 {
-                missing.clone()
-            } else {
-                let idx = i.wrapping_mul(2_654_435_761) % n;
-                keys[idx].clone()
-            }
-        })
-        .collect()
-}
-
-fn lookup_std(map: &StdHashMap<String, u64>, queries: &[String]) -> u64 {
-    let mut sum = 0u64;
-    for q in queries {
-        match map.get(black_box(q.as_str())) {
-            Some(v) => sum = sum.wrapping_add(*v),
-            None => sum = sum.wrapping_add(1),
-        }
-    }
-    black_box(sum)
-}
-
-fn lookup_brown(map: &BrownHashMap<String, u64>, queries: &[String]) -> u64 {
-    let mut sum = 0u64;
-    for q in queries {
-        match map.get(black_box(q.as_str())) {
-            Some(v) => sum = sum.wrapping_add(*v),
-            None => sum = sum.wrapping_add(1),
-        }
-    }
-    black_box(sum)
-}
-
-fn lookup_vec(data: &[(String, u64)], queries: &[String]) -> u64 {
-    let mut sum = 0u64;
-    for q in queries {
-        let q = black_box(q);
-        match data.iter().find(|(k, _)| k == q) {
-            Some((_, v)) => sum = sum.wrapping_add(*v),
-            None => sum = sum.wrapping_add(1),
-        }
-    }
-    black_box(sum)
-}
-
-fn bench(c: &mut Criterion) {
-    let mut group = c.benchmark_group("map_vs_vec_str");
-
-    for n in SIZES {
-        let vec_data = make_vec(n);
-        let std_map = make_std_map(&vec_data);
-        let brown_map = make_brown_map(&vec_data);
-
-        let queries_hit = make_queries(n, false);
-        let queries_mixed = make_queries(n, true);
-
-        // std::collections::HashMap (SipHash)
-        group.bench_function(format!("std_hashmap_hit/{n}"), |b| {
-            b.iter(|| lookup_std(black_box(&std_map), black_box(&queries_hit)))
-        });
-        group.bench_function(format!("std_hashmap_mixed/{n}"), |b| {
-            b.iter(|| lookup_std(black_box(&std_map), black_box(&queries_mixed)))
-        });
-
-        // hashbrown (SwissTable + foldhash)
-        group.bench_function(format!("hashbrown_hit/{n}"), |b| {
-            b.iter(|| lookup_brown(black_box(&brown_map), black_box(&queries_hit)))
-        });
-        group.bench_function(format!("hashbrown_mixed/{n}"), |b| {
-            b.iter(|| lookup_brown(black_box(&brown_map), black_box(&queries_mixed)))
-        });
-
-        // Vec<(String, u64)>, линейный поиск
-        group.bench_function(format!("vec_linear_hit/{n}"), |b| {
-            b.iter(|| lookup_vec(black_box(&vec_data), black_box(&queries_hit)))
-        });
-        group.bench_function(format!("vec_linear_mixed/{n}"), |b| {
-            b.iter(|| lookup_vec(black_box(&vec_data), black_box(&queries_mixed)))
-        });
-    }
-
-    group.finish();
-}
-
-criterion_group!(benches, bench);
-criterion_main!(benches);
diff --git a/benches/repo_cache_bench.rs b/benches/repo_cache_bench.rs
deleted file mode 100644
index 8b44a4f..0000000
--- a/benches/repo_cache_bench.rs
+++ /dev/null
@@ -1,325 +0,0 @@
-use criterion::{BenchmarkId, Criterion, criterion_group, criterion_main};
-use hashbrown::HashMap as HashbrownMap;
-use rustc_hash::FxHashMap;
-use std::collections::{BTreeMap, HashMap};
-use std::hint::black_box;
-
-// Тестовая структура (аналог вашей сущности)
-#[derive(Debug, Clone)]
-struct Entity {
-    id: i64,
-    data: [u8; 64], // 64 байта данных для реалистичности
-}
-
-impl Entity {
-    fn new(id: i64) -> Self {
-        Self {
-            id,
-            data: [id as u8; 64],
-        }
-    }
-}
-
-// ========== ТЕСТОВЫЕ ФУНКЦИИ ==========
-
-fn bench_vec_insert_sorted(vec: &mut Vec<Entity>, entities: &[Entity]) {
-    vec.clear();
-    for entity in entities {
-        vec.push(entity.clone());
-    }
-    // Vec уже отсортирован, так как ID монотонно возрастают
-}
-
-fn bench_vec_search_separated<'a>(ids: &[i64], vec: &'a [Entity], id: i64) -> Option<&'a Entity> {
-    match ids.binary_search(&id) {
-        Ok(index) => Some(&vec[index]),
-        Err(_) => None,
-    }
-}
-
-fn bench_vec_search(vec: &Vec<Entity>, id: i64) -> Option<&Entity> {
-    match vec.binary_search_by(|probe| probe.id.cmp(&id)) {
-        Ok(index) => Some(&vec[index]),
-        Err(_) => None,
-    }
-}
-
-fn bench_btreemap_insert(map: &mut BTreeMap<i64, Entity>, entities: &[Entity]) {
-    map.clear();
-    for entity in entities {
-        map.insert(entity.id, entity.clone());
-    }
-}
-
-fn bench_btreemap_search(map: &BTreeMap<i64, Entity>, id: i64) -> Option<&Entity> {
-    map.get(&id)
-}
-
-fn bench_hashmap_insert(map: &mut HashMap<i64, Entity>, entities: &[Entity]) {
-    map.clear();
-    for entity in entities {
-        map.insert(entity.id, entity.clone());
-    }
-}
-
-fn bench_hashmap_search(map: &HashMap<i64, Entity>, id: i64) -> Option<&Entity> {
-    map.get(&id)
-}
-
-fn bench_hashbrown_insert(map: &mut HashbrownMap<i64, Entity>, entities: &[Entity]) {
-    map.clear();
-    for entity in entities {
-        map.insert(entity.id, entity.clone());
-    }
-}
-
-fn bench_hashbrown_search(map: &HashbrownMap<i64, Entity>, id: i64) -> Option<&Entity> {
-    map.get(&id)
-}
-
-fn bench_fxhashmap_insert(map: &mut FxHashMap<i64, Entity>, entities: &[Entity]) {
-    map.clear();
-    for entity in entities {
-        map.insert(entity.id, entity.clone());
-    }
-}
-
-fn bench_fxhashmap_search(map: &FxHashMap<i64, Entity>, id: i64) -> Option<&Entity> {
-    map.get(&id)
-}
-
-// ========== ГЕНЕРАЦИЯ ДАННЫХ ==========
-
-fn generate_entities(count: usize) -> Vec<Entity> {
-    (0..count).map(|i| Entity::new(i as i64)).collect()
-}
-
-fn generate_search_ids(count: usize, max_id: i64) -> Vec<i64> {
-    // 70% попаданий, 30% промахов (реалистичный сценарий)
-    let mut ids = Vec::with_capacity(count);
-    for i in 0..count {
-        if i % 10 < 7 {
-            // Попадание
-            ids.push((i as i64 * 13) % max_id);
-        } else {
-            // Промах (несуществующий ID)
-            ids.push(max_id + i as i64);
-        }
-    }
-    ids
-}
-
-// ========== БЕНЧМАРКИ ==========
-
-fn bench_insert(c: &mut Criterion) {
-    let mut group = c.benchmark_group("insert");
-
-    for size in [10_000, 100_000, 500_000] {
-        let entities = generate_entities(size);
-
-        group.bench_with_input(
-            BenchmarkId::new("Vec (sorted)", size),
-            &entities,
-            |b, entities| {
-                let mut vec = Vec::with_capacity(size);
-                b.iter(|| {
-                    bench_vec_insert_sorted(&mut vec, black_box(entities));
-                });
-            },
-        );
-
-        group.bench_with_input(
-            BenchmarkId::new("BTreeMap", size),
-            &entities,
-            |b, entities| {
-                let mut map = BTreeMap::new();
-                b.iter(|| {
-                    bench_btreemap_insert(&mut map, black_box(entities));
-                });
-            },
-        );
-
-        group.bench_with_input(
-            BenchmarkId::new("HashMap (std)", size),
-            &entities,
-            |b, entities| {
-                let mut map = HashMap::new();
-                b.iter(|| {
-                    bench_hashmap_insert(&mut map, black_box(entities));
-                });
-            },
-        );
-
-        group.bench_with_input(
-            BenchmarkId::new("HashMap (hashbrown)", size),
-            &entities,
-            |b, entities| {
-                let mut map = HashbrownMap::new();
-                b.iter(|| {
-                    bench_hashbrown_insert(&mut map, black_box(entities));
-                });
-            },
-        );
-
-        group.bench_with_input(
-            BenchmarkId::new("FxHashMap", size),
-            &entities,
-            |b, entities| {
-                let mut map = FxHashMap::default();
-                b.iter(|| {
-                    bench_fxhashmap_insert(&mut map, black_box(entities));
-                });
-            },
-        );
-    }
-
-    group.finish();
-}
-
-fn bench_search(c: &mut Criterion) {
-    let mut group = c.benchmark_group("search");
-
-    for size in [10_000, 100_000, 500_000] {
-        let entities = generate_entities(size);
-        let entity_ids = entities.iter().map(|entity| entity.id).collect::<Vec<_>>();
-        let search_ids = generate_search_ids(1000, size as i64);
-
-        // Подготовка коллекций
-        let mut vec = Vec::with_capacity(size);
-        bench_vec_insert_sorted(&mut vec, &entities);
-
-        let mut btreemap = BTreeMap::new();
-        bench_btreemap_insert(&mut btreemap, &entities);
-
-        let mut hashmap = HashMap::new();
-        bench_hashmap_insert(&mut hashmap, &entities);
-
-        let mut hashbrown = HashbrownMap::new();
-        bench_hashbrown_insert(&mut hashbrown, &entities);
-
-        let mut fxhashmap = FxHashMap::default();
-        bench_fxhashmap_insert(&mut fxhashmap, &entities);
-
-        group.bench_with_input(
-            BenchmarkId::new("Vec (binary search)", size),
-            &search_ids,
-            |b, ids| {
-                b.iter(|| {
-                    for &id in ids {
-                        black_box(bench_vec_search_separated(&entity_ids, &vec, black_box(id)));
-                    }
-                });
-            },
-        );
-
-        group.bench_with_input(
-            BenchmarkId::new("Vec (binary search) separated", size),
-            &search_ids,
-            |b, ids| {
-                b.iter(|| {
-                    for &id in ids {
-                        black_box(bench_vec_search(&vec, black_box(id)));
-                    }
-                });
-            },
-        );
-
-        group.bench_with_input(BenchmarkId::new("BTreeMap", size), &search_ids, |b, ids| {
-            b.iter(|| {
-                for &id in ids {
-                    black_box(bench_btreemap_search(&btreemap, black_box(id)));
-                }
-            });
-        });
-
-        group.bench_with_input(
-            BenchmarkId::new("HashMap (std)", size),
-            &search_ids,
-            |b, ids| {
-                b.iter(|| {
-                    for &id in ids {
-                        black_box(bench_hashmap_search(&hashmap, black_box(id)));
-                    }
-                });
-            },
-        );
-
-        group.bench_with_input(
-            BenchmarkId::new("HashMap (hashbrown)", size),
-            &search_ids,
-            |b, ids| {
-                b.iter(|| {
-                    for &id in ids {
-                        black_box(bench_hashbrown_search(&hashbrown, black_box(id)));
-                    }
-                });
-            },
-        );
-
-        group.bench_with_input(
-            BenchmarkId::new("FxHashMap", size),
-            &search_ids,
-            |b, ids| {
-                b.iter(|| {
-                    for &id in ids {
-                        black_box(bench_fxhashmap_search(&fxhashmap, black_box(id)));
-                    }
-                });
-            },
-        );
-    }
-
-    group.finish();
-}
-
-fn bench_memory_efficiency(c: &mut Criterion) {
-    let mut group = c.benchmark_group("memory_efficiency");
-
-    let size = 100_000;
-    let entities = generate_entities(size);
-
-    group.bench_function("Vec memory", |b| {
-        b.iter(|| {
-            let mut vec = Vec::with_capacity(size);
-            bench_vec_insert_sorted(&mut vec, black_box(&entities));
-            black_box(vec);
-        });
-    });
-
-    group.bench_function("BTreeMap memory", |b| {
-        b.iter(|| {
-            let mut map = BTreeMap::new();
-            bench_btreemap_insert(&mut map, black_box(&entities));
-            black_box(map);
-        });
-    });
-
-    group.bench_function("HashMap (std) memory", |b| {
-        b.iter(|| {
-            let mut map = HashMap::new();
-            bench_hashmap_insert(&mut map, black_box(&entities));
-            black_box(map);
-        });
-    });
-
-    group.bench_function("HashMap (hashbrown) memory", |b| {
-        b.iter(|| {
-            let mut map = HashbrownMap::new();
-            bench_hashbrown_insert(&mut map, black_box(&entities));
-            black_box(map);
-        });
-    });
-
-    group.bench_function("FxHashMap memory", |b| {
-        b.iter(|| {
-            let mut map = FxHashMap::default();
-            bench_fxhashmap_insert(&mut map, black_box(&entities));
-            black_box(map);
-        });
-    });
-
-    group.finish();
-}
-
-criterion_group!(benches, bench_insert, bench_search, bench_memory_efficiency);
-criterion_main!(benches);
diff --git a/src/core/deck.rs b/src/core/deck.rs
index c7e687b..74c4343 100644
--- a/src/core/deck.rs
+++ b/src/core/deck.rs
@@ -33,7 +33,9 @@ impl DeckData {
             .map(|card_state| EntityHandle::from_id(card_state.word_id))
             .collect();
         let states = query.handles().collect::<Vec<EntityHandle<CardState>>>();
-        let fsrs = Fsrs(FsrsModule::new(Self::set_links(states.as_slice(), &states_repo).as_slice()));
+        let fsrs = Fsrs(FsrsModule::new(
+            Self::set_links(states.as_slice(), &states_repo).as_slice(),
+        ));
         drop(states_repo);
         Self {
             states,
@@ -61,7 +63,7 @@ impl DeckData {
         };
 
         self.current_word_index = Some(index);
-        (self.words[index].clone(), self.states[index].clone())
+        (self.words[index], self.states[index])
     }
 
     fn set_links<'a>(
@@ -108,7 +110,7 @@ impl DeckData {
                 timestamp: Utc::now(),
                 deck_id: self.settings.id,
                 word_id,
-                answer: status.clone(),
+                answer: status,
                 before: old_score,
                 after: new_score,
                 fsrs,
diff --git a/src/core/srs.rs b/src/core/srs.rs
index a7a2936..4691e3b 100644
--- a/src/core/srs.rs
+++ b/src/core/srs.rs
@@ -44,9 +44,7 @@ impl SRSModule for RandomSRSModule {
     fn new(set: &[&CardState]) -> Self {
         let mut basket = (0..set.len()).collect::<Vec<usize>>();
         basket.shuffle(&mut rand::rng());
-        Self{
-            basket,
-        }
+        Self { basket }
     }
 
     fn next(&mut self, set: &[&CardState]) -> usize {
@@ -90,16 +88,15 @@ impl SRSModule for SemiRandomSRSModule {
             .expect("update weights error");
     }
     fn new(set: &[&CardState]) -> Self {
-
         let weights = set
             .iter()
             .map(|s| (100.0 / s.calculated_score()).powf(2.0) * 2.0)
             .collect::<Vec<f32>>();
 
-        Self{
+        Self {
             generator: rng(),
-            last_weights:  WeightedIndex::new(weights).expect("Incorrect weights update"),
-            history: vec![]
+            last_weights: WeightedIndex::new(weights).expect("Incorrect weights update"),
+            history: vec![],
         }
     }
 }
@@ -233,7 +230,9 @@ impl SRSModule for FsrsModule {
         updated_word.fsrs_open_day = next_day;
         updated_word.fsrs_opened = updated_word.last_open.date_naive();
 
-        if (updated_word.fsrs_open_day != today && !first_time) || (first_time && status == WordOpenMode::Easy) {
+        if (updated_word.fsrs_open_day != today && !first_time)
+            || (first_time && status == WordOpenMode::Easy)
+        {
             info!("For today word on index {} solved", index);
             self.solved.push(index);
             let index = self.current_group.iter().position(|x| *x == index).unwrap();
diff --git a/src/data/entities.rs b/src/data/entities.rs
index 4412064..60a2acc 100644
--- a/src/data/entities.rs
+++ b/src/data/entities.rs
@@ -1,5 +1,6 @@
 use crate::core::srs::{FADE_PER_DAY, MAX_SCORE, WordOpenMode};
 use crate::data::{INVALID_ID, Id};
+use crate::data_provider::history::HistoryRepositoryInner;
 use chrono::{DateTime, Local, NaiveDate, Utc};
 use fsrs::MemoryState;
 use litemap::LiteMap;
@@ -10,7 +11,6 @@ use std::hash::{Hash, Hasher};
 use std::marker::PhantomData;
 use std::sync::Arc;
 use std::time::Instant;
-use crate::data_provider::history::{HistoryRepository, HistoryRepositoryInner};
 
 #[derive(Clone, Debug)]
 pub struct WordData {
@@ -70,7 +70,7 @@ pub struct HistoryNote {
     pub answer: WordOpenMode,
     pub before: u8,
     pub after: u8,
-    pub fsrs: bool
+    pub fsrs: bool,
 }
 
 impl EntityData for HistoryNote {
@@ -86,17 +86,16 @@ impl EntityData for HistoryNote {
 impl HistoryRepositoryInner {
     pub fn activity_of_deck(&self, id: Id) -> Vec<(NaiveDate, u32)> {
         let mut query = self.query(Arc::new(move |note| note.deck_id == id));
-        let values = query.iter(&self).collect::<Vec<_>>();
+        let values = query.iter(self).collect::<Vec<_>>();
         let mut counts = vec![];
         if !values.is_empty() {
             let mut date = values[0].timestamp.with_timezone(&Local).date_naive();
             let mut count = 0;
             for note in values {
                 let current_date = note.timestamp.with_timezone(&Local).date_naive();
-                if date ==  current_date{
+                if date == current_date {
                     count += 1;
-                }
-                else {
+                } else {
                     counts.push((date, count));
                     date = current_date;
                     count = 0;
@@ -209,14 +208,9 @@ pub struct EntityHandle<E> {
 }
 
 impl<T> Clone for EntityHandle<T> {
-    fn clone(&self) -> Self {
-        EntityHandle {
-            id: self.id,
-            index: self.index,
-            _phantom: Default::default(),
-        }
-    }
+    fn clone(&self) -> Self { *self }
 }
+
 impl<T> Copy for EntityHandle<T> {}
 impl<T> EntityHandle<T> {
     pub fn new(id: Id, index: usize, real: bool) -> Self {
diff --git a/src/data/repositories.rs b/src/data/repositories.rs
index 3dd5990..95553bf 100644
--- a/src/data/repositories.rs
+++ b/src/data/repositories.rs
@@ -1,8 +1,9 @@
 use crate::data::Id;
-use crate::data::entities::{CardState, EntityData, EntityHandle};
+use crate::data::entities::{EntityData, EntityHandle};
 use crate::data_provider::sqlite::SqliteConnection;
 use crate::helpers::into_result;
 use crate::notification::{MaybeError, NotificationData};
+use log::debug;
 use parking_lot::{Mutex, RwLock};
 use rayon::iter::IndexedParallelIterator;
 use rayon::iter::IntoParallelRefIterator;
@@ -12,7 +13,6 @@ use std::marker::PhantomData;
 use std::ops::{Deref, Index, IndexMut};
 use std::sync::Arc;
 use std::time::Instant;
-use log::debug;
 
 pub trait Repository<T, D>
 where
@@ -31,13 +31,19 @@ where
     fn create_now(&mut self, new: T) -> Result<EntityHandle<T>, NotificationData>;
     fn save(&mut self, entity: &mut EntityHandle<T>) -> MaybeError;
     fn delete(&mut self, handle: EntityHandle<T>) -> MaybeError;
-    fn find<F>(&self, predicate: F) -> Option<EntityHandle<T>> where F : Fn(&T) -> bool;
+    fn find<F>(&self, predicate: F) -> Option<EntityHandle<T>>
+    where
+        F: Fn(&T) -> bool;
     fn init(&mut self) -> MaybeError;
     fn start(&mut self) -> MaybeError;
     fn reload(&mut self) -> MaybeError;
     fn shifts(&self) -> usize;
-    fn iter<'a>(&'a self) -> impl Iterator<Item = &'a T> where T: 'a;
-    fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = &'a mut T> where T: 'a;
+    fn iter<'a>(&'a self) -> impl Iterator<Item = &'a T>
+    where
+        T: 'a;
+    fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = &'a mut T>
+    where
+        T: 'a;
 }
 
 struct QueryManger<T, R, D>
@@ -88,9 +94,7 @@ where
             .filter(|(_, q)| {
                 let query = q.lock();
                 let rule = &query.rule;
-                return rule(data);
-
-                false
+                rule(data)
             })
             .map(|(i, _)| i)
             .collect()
@@ -118,7 +122,10 @@ where
 }
 
 impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> Query<T, R, D> {
-    pub fn iter<'a>(&mut self, data_repository_inner: &'a DataRepositoryInner<T, D>) -> impl Iterator<Item = &'a T>
+    pub fn iter<'a>(
+        &mut self,
+        data_repository_inner: &'a DataRepositoryInner<T, D>,
+    ) -> impl Iterator<Item = &'a T>
     where
         T: 'a,
     {
@@ -130,7 +137,10 @@ impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> Qu
             .filter_map(move |e| data_repository_inner.get_ref(e))
     }
 
-    pub fn iter_with_handles<'a>(&mut self, data_repository_inner: &'a DataRepositoryInner<T, D>) -> impl Iterator<Item =  (&'a T, EntityHandle<T>)>
+    pub fn iter_with_handles<'a>(
+        &mut self,
+        data_repository_inner: &'a DataRepositoryInner<T, D>,
+    ) -> impl Iterator<Item = (&'a T, EntityHandle<T>)>
     where
         T: 'a,
     {
@@ -139,9 +149,9 @@ impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> Qu
         }
         self.cache
             .iter_mut()
-            .filter_map(move |e| Some((data_repository_inner.get_ref(e)?, e.clone())))
+            .filter_map(move |e| Some((data_repository_inner.get_ref(e)?, *e)))
     }
-    
+
     pub fn for_each_mut<F>(&mut self, repo: &mut DataRepositoryInner<T, D>, mut f: F)
     where
         F: FnMut(&mut T),
@@ -190,19 +200,26 @@ impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> Qu
                 .collect::<Vec<_>>(),
         );
 
-        debug!("Query for {} elements (filtered {}) takes {:?}", data_repository.len(), self.cache.len(), time.elapsed());
+        debug!(
+            "Query for {} elements (filtered {}) takes {:?}",
+            data_repository.len(),
+            self.cache.len(),
+            time.elapsed()
+        );
     }
 
     pub fn handles(&self) -> impl Iterator<Item = EntityHandle<T>> {
         self.cache.iter().cloned()
     }
-    
+
     pub fn len(&self) -> usize {
         self.cache.len()
     }
 }
 
-impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> Index<usize> for  Query<T, R, D> {
+impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> Index<usize>
+    for Query<T, R, D>
+{
     type Output = EntityHandle<T>;
 
     fn index(&self, index: usize) -> &Self::Output {
@@ -210,7 +227,9 @@ impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> In
     }
 }
 
-impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> IndexMut<usize> for  Query<T, R, D> {
+impl<T: EntityData + Clone + Send + Sync, R: Repository<T, D>, D: DbLayer<T>> IndexMut<usize>
+    for Query<T, R, D>
+{
     fn index_mut(&mut self, index: usize) -> &mut Self::Output {
         &mut self.cache[index]
     }
@@ -221,7 +240,10 @@ where
     D: BatchedDbLayer<T>,
     T: EntityData,
 {
-    fn create_now_many(&mut self, entities: &mut [T]) -> Result<Vec<EntityHandle<T>>, NotificationData>;
+    fn create_now_many(
+        &mut self,
+        entities: &mut [T],
+    ) -> Result<Vec<EntityHandle<T>>, NotificationData>;
     fn save_many(&mut self, handles: &mut [EntityHandle<T>]) -> MaybeError;
     fn delete_many(&mut self, handles: &mut [EntityHandle<T>]) -> MaybeError;
 }
@@ -257,10 +279,10 @@ pub struct DataRepositoryInner<T: Clone + EntityData, D: DbLayer<T>> {
     shifts: usize,
 }
 
-impl<T: Clone + EntityData, D: DbLayer<T> + Default>  DataRepository<T, D> {
+impl<T: Clone + EntityData, D: DbLayer<T> + Default> DataRepository<T, D> {
     pub fn new(connection: Arc<Mutex<SqliteConnection>>) -> DataRepository<T, D> {
-        Self{
-            inner: Arc::new(RwLock::new(DataRepositoryInner{
+        Self {
+            inner: Arc::new(RwLock::new(DataRepositoryInner {
                 cache: vec![],
                 temporal: vec![],
                 next_temporal: 0,
@@ -274,7 +296,6 @@ impl<T: Clone + EntityData, D: DbLayer<T> + Default>  DataRepository<T, D> {
     }
 }
 
-
 impl<T: Clone + EntityData, D: DbLayer<T>> Deref for DataRepository<T, D> {
     type Target = Arc<RwLock<DataRepositoryInner<T, D>>>;
 
@@ -283,7 +304,9 @@ impl<T: Clone + EntityData, D: DbLayer<T>> Deref for DataRepository<T, D> {
     }
 }
 
-impl<T: EntityData + Clone + std::marker::Send + std::marker::Sync, D: DbLayer<T>> DataRepositoryInner<T, D> {
+impl<T: EntityData + Clone + std::marker::Send + std::marker::Sync, D: DbLayer<T>>
+    DataRepositoryInner<T, D>
+{
     pub fn query_par(
         &self,
         rule: Arc<dyn Fn(&T) -> bool + Send + Sync>,
@@ -306,7 +329,7 @@ impl<T: EntityData + Clone + std::marker::Send + std::marker::Sync, D: DbLayer<T
 
     pub fn query(
         &self,
-        rule: Arc<dyn Fn(& T) -> bool + Send + Sync>,
+        rule: Arc<dyn Fn(&T) -> bool + Send + Sync>,
     ) -> Query<T, DataRepositoryInner<T, D>, D>
     where
         T: Send + Sync,
@@ -323,9 +346,9 @@ impl<T: EntityData + Clone + std::marker::Send + std::marker::Sync, D: DbLayer<T
 
         query
     }
-    
+
     pub fn empty_query(&self) -> Query<T, DataRepositoryInner<T, D>, D> {
-        Query{
+        Query {
             cache: vec![],
             rule: Arc::new(|_| false),
             parallel: false,
@@ -335,7 +358,7 @@ impl<T: EntityData + Clone + std::marker::Send + std::marker::Sync, D: DbLayer<T
     }
 
     pub fn empty_query_par(&self) -> Query<T, DataRepositoryInner<T, D>, D> {
-        Query{
+        Query {
             cache: vec![],
             rule: Arc::new(|_| false),
             parallel: true,
@@ -433,7 +456,7 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
     }
 
     fn save(&mut self, entity: &mut EntityHandle<T>) -> MaybeError {
-        let original_state = entity.clone();
+        let original_state = *entity;
         if entity.real() {
             let data = self.get_ref(entity).unwrap();
             self.data_layer
@@ -441,12 +464,11 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
         } else {
             let index = fast_position_of(self.temporal.as_slice(), entity).unwrap();
             let data = &mut self.temporal[index];
-            self.data_layer
-                .add_entity(data, &self.connection.lock())?;
+            self.data_layer.add_entity(data, &self.connection.lock())?;
             entity.set_real(true);
             entity.id = data.id();
             entity.set_index(self.cache.len());
-            self.query_manger.handle_save(original_state, entity, &data);
+            self.query_manger.handle_save(original_state, entity, data);
 
             let data = self.temporal.remove(index);
             self.cache.push(data);
@@ -477,16 +499,16 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
 
     fn find<F>(&self, predicate: F) -> Option<EntityHandle<T>>
     where
-        F: Fn(&T) -> bool
+        F: Fn(&T) -> bool,
     {
-        if let Some(index) = self.cache.iter().position(|entity| predicate(entity)){
+        if let Some(index) = self.cache.iter().position(&predicate) {
             let value = &self.cache[index];
-            return Some(EntityHandle::new(value.id(), index, true))
+            return Some(EntityHandle::new(value.id(), index, true));
         }
 
-        if let Some(index) = self.temporal.iter().position(|entity| predicate(entity)){
+        if let Some(index) = self.temporal.iter().position(predicate) {
             let value = &self.temporal[index];
-            return Some(EntityHandle::new(value.id(), index, false))
+            return Some(EntityHandle::new(value.id(), index, false));
         }
         None
     }
@@ -518,16 +540,16 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
         self.shifts
     }
 
-    fn iter<'a>(&'a self) -> impl Iterator<Item=&'a T>
+    fn iter<'a>(&'a self) -> impl Iterator<Item = &'a T>
     where
-        T: 'a
+        T: 'a,
     {
         self.cache.iter().chain(self.temporal.iter())
     }
 
-    fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item=&'a mut T>
+    fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = &'a mut T>
     where
-        T: 'a
+        T: 'a,
     {
         self.cache.iter_mut().chain(self.temporal.iter_mut())
     }
@@ -535,10 +557,18 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
 impl<T: EntityData + Clone, D: BatchedDbLayer<T> + DbLayer<T>> BatchedRepository<T, D>
     for DataRepositoryInner<T, D>
 {
-    fn create_now_many(&mut self, entities: &mut [T]) -> Result<Vec<EntityHandle<T>>, NotificationData> {
-        self.data_layer.add_many_entities(entities, &mut self.connection.lock())?;
+    fn create_now_many(
+        &mut self,
+        entities: &mut [T],
+    ) -> Result<Vec<EntityHandle<T>>, NotificationData> {
+        self.data_layer
+            .add_many_entities(entities, &mut self.connection.lock())?;
         let len = self.cache.len();
-        let handles = entities.iter().enumerate().map(|(index, entity)| {EntityHandle::new(entity.id(), index + len, true)}).collect();
+        let handles = entities
+            .iter()
+            .enumerate()
+            .map(|(index, entity)| EntityHandle::new(entity.id(), index + len, true))
+            .collect();
         self.cache.extend(entities.to_vec());
         Ok(handles)
     }
@@ -577,7 +607,7 @@ impl<T: EntityData + Clone, D: BatchedDbLayer<T> + DbLayer<T>> BatchedRepository
         let start = self.cache.len();
 
         for (i, (handle, data)) in temp.into_iter().zip(&mut temp_values).enumerate() {
-            let old = handle.clone();
+            let old = *handle;
             handle.id = data.id();
             handle.set_index(start + i);
             handle.set_real(true);
@@ -641,7 +671,7 @@ where
 {
     let mut temp = Vec::with_capacity(handles.len() / 2);
     let mut cached = Vec::with_capacity(handles.len() / 2);
-    handles.sort_by(|a, b| a.id.cmp(&b.id));
+    handles.sort_by_key(|a| a.id);
     handles.iter().for_each(|handle| {
         if handle.real() {
             cached.push(getter(handle))
diff --git a/src/data_provider/card_states.rs b/src/data_provider/card_states.rs
index 266e0ab..ef97ecd 100644
--- a/src/data_provider/card_states.rs
+++ b/src/data_provider/card_states.rs
@@ -1,20 +1,14 @@
-use std::sync::Arc;
-use crate::data::entities::{CardState, DeckSettings};
+use crate::data::entities::CardState;
 use crate::data::repositories::{DataRepository, DataRepositoryInner, Query};
+use crate::data::Id;
 use crate::data_provider::{SqliteDbLayer, TableAccessQuerySet};
-use crate::notification::NotificationData::{DbLoadError, DbSaveError};
-use crate::notification::{MaybeError, NotificationData};
 use chrono::NaiveDate;
 use fsrs::MemoryState;
-use log::info;
-use rusqlite::{Connection, Error, Params, Row, params};
-use std::time::Instant;
-use crate::data::Id;
+use rusqlite::{Error, Params, Row};
+use std::sync::Arc;
 
-pub type CardStateRepository =
-    DataRepository<CardState, CardStateDbLayer>;
-pub type CardStateRepositoryInner =
-    DataRepositoryInner<CardState, CardStateDbLayer>;
+pub type CardStateRepository = DataRepository<CardState, CardStateDbLayer>;
+pub type CardStateRepositoryInner = DataRepositoryInner<CardState, CardStateDbLayer>;
 pub type CardStateDbLayer = SqliteDbLayer<CardState, CardStatesQuerySet>;
 #[derive(Clone)]
 pub struct CardStatesQuerySet;
@@ -73,35 +67,6 @@ impl TableAccessQuerySet<CardState> for CardStatesQuerySet {
         )
     }
 }
-pub fn load_stats_of_deck(
-    set: &DeckSettings,
-    connection: &Connection,
-) -> Result<Vec<CardState>, NotificationData> {
-    let mut stmt = connection
-        .prepare("SELECT id, word_id, score, last_opened, fsrs_opened, fsrs_memory, fsrs_open_day FROM states WHERE set_id = ?1")
-        .expect("Failed to prepare state query");
-    let iter = stmt
-        .query_map((set.id,), |row| {
-            Ok(CardState {
-                id: row.get(0)?,
-                word_id: row.get(1)?,
-                deck_id: set.id,
-                score: row.get(2)?,
-                fsrs_opened: NaiveDate::from_epoch_days(row.get::<usize, i32>(4)?)
-                    .expect("Incorrect date encoding"),
-                fsrs_memory: get_memory(row.get(5)?),
-                last_open: row.get(3)?,
-                fsrs_open_day: NaiveDate::from_epoch_days(row.get::<usize, i32>(6)?)
-                    .expect("Incorrect date encoding"),
-            })
-        })
-        .map_err(|_| DbLoadError)?;
-
-    let mut buffer = Vec::with_capacity(512);
-    iter.filter_map(|res| res.ok()).for_each(|i| buffer.push(i));
-
-    Ok(buffer)
-}
 
 fn get_memory(value: i64) -> Option<MemoryState> {
     if value == 0 {
@@ -122,7 +87,10 @@ fn memory_to_i64(value: &Option<MemoryState>) -> i64 {
 }
 
 impl CardStateRepositoryInner {
-    pub fn deck_states(&self, deck_id: Id) -> Query<CardState, CardStateRepositoryInner, CardStateDbLayer> {
-        self.query(Arc::new(move |state| {state.deck_id == deck_id}))
+    pub fn deck_states(
+        &self,
+        deck_id: Id,
+    ) -> Query<CardState, CardStateRepositoryInner, CardStateDbLayer> {
+        self.query(Arc::new(move |state| state.deck_id == deck_id))
     }
-}
\ No newline at end of file
+}
diff --git a/src/data_provider/custom_fields.rs b/src/data_provider/custom_fields.rs
index 6f09efa..feb81db 100644
--- a/src/data_provider/custom_fields.rs
+++ b/src/data_provider/custom_fields.rs
@@ -3,7 +3,8 @@ use crate::data::repositories::DataRepository;
 use crate::data_provider::{SqliteDbLayer, TableAccessQuerySet};
 use rusqlite::{Error, Params, Row};
 
-pub type CustomFieldRepository = DataRepository<CustomField, SqliteDbLayer<CustomField, CustomFieldsQuerySet>>;
+pub type CustomFieldRepository =
+    DataRepository<CustomField, SqliteDbLayer<CustomField, CustomFieldsQuerySet>>;
 
 pub struct CustomFieldsQuerySet;
 impl TableAccessQuerySet<WordGroup> for CustomFieldsQuerySet {
diff --git a/src/data_provider/decks.rs b/src/data_provider/decks.rs
index d647467..e7fe7f9 100644
--- a/src/data_provider/decks.rs
+++ b/src/data_provider/decks.rs
@@ -52,4 +52,4 @@ impl TableAccessQuerySet<DeckSettings> for DeckQuerySet {
             entity.id,
         )
     }
-}
\ No newline at end of file
+}
diff --git a/src/data_provider/history.rs b/src/data_provider/history.rs
index 17007b1..7b86513 100644
--- a/src/data_provider/history.rs
+++ b/src/data_provider/history.rs
@@ -77,7 +77,7 @@ impl FromSql for WordOpenMode {
                 2 => Ok(WordOpenMode::Ok),
                 3 => Ok(WordOpenMode::Easy),
                 _ => Ok(WordOpenMode::None),
-            }
+            };
         }
         Ok(WordOpenMode::None)
     }
@@ -89,7 +89,7 @@ impl ToSql for WordOpenMode {
             WordOpenMode::Easy => 3,
             WordOpenMode::Ok => 2,
             WordOpenMode::Hard => 1,
-            WordOpenMode::None => 0
+            WordOpenMode::None => 0,
         }))
     }
-}
\ No newline at end of file
+}
diff --git a/src/data_provider/import.rs b/src/data_provider/import.rs
index ebdbaaa..bf59d9b 100644
--- a/src/data_provider/import.rs
+++ b/src/data_provider/import.rs
@@ -1,10 +1,10 @@
-use std::collections::BTreeMap;
 use crate::helpers::into_result;
 use crate::notification::NotificationData;
 use crate::notification::NotificationData::IncorrectAnkiFile;
 use log::info;
 use rusqlite::Connection;
 use serde_json::Value;
+use std::collections::BTreeMap;
 
 #[derive(Clone)]
 pub struct ImportData(pub(crate) Vec<ImportGroup>);
diff --git a/src/data_provider/mod.rs b/src/data_provider/mod.rs
index 31e0e22..0979afc 100644
--- a/src/data_provider/mod.rs
+++ b/src/data_provider/mod.rs
@@ -67,7 +67,11 @@ impl<T: EntityData, Q: TableAccessQuerySet<T>> DbLayer<T> for SqliteDbLayer<T, Q
         let time = Instant::now();
 
         let index: u32 = connection
-            .query_row(format!("{} RETURNING {}", Q::add(), Q::id_field()).as_str(), Q::insert_params(entity), |row| row.get(0))
+            .query_row(
+                format!("{} RETURNING {}", Q::add(), Q::id_field()).as_str(),
+                Q::insert_params(entity),
+                |row| row.get(0),
+            )
             .map_err(|e| {
                 error!("{}", e);
                 DbSaveError
@@ -104,7 +108,7 @@ impl<T: EntityData, Q: TableAccessQuerySet<T>> DbLayer<T> for SqliteDbLayer<T, Q
             .prepare(Q::load())
             .expect("Failed to prepare state query");
         let iter = stmt
-            .query_map([], |row| Ok(Q::from_sql(row)?))
+            .query_map([], |row| Q::from_sql(row))
             .map_err(|e| {
                 error!("{}", e);
                 DbSaveError
diff --git a/src/data_provider/sqlite.rs b/src/data_provider/sqlite.rs
index 7fd9fab..617033f 100644
--- a/src/data_provider/sqlite.rs
+++ b/src/data_provider/sqlite.rs
@@ -1,7 +1,7 @@
 use crate::fs::*;
+use log::error;
 use rusqlite::Connection;
 use std::ops::{Deref, DerefMut};
-use log::error;
 
 pub fn create_db() {
     let db_file = db_path();
@@ -130,6 +130,7 @@ impl SqliteConnection {
 }
 
 impl Drop for SqliteConnection {
-
-fn drop(&mut self) { self.finish(); }
-}
\ No newline at end of file
+    fn drop(&mut self) {
+        self.finish();
+    }
+}
diff --git a/src/data_provider/words.rs b/src/data_provider/words.rs
index 4ea6bdf..e147dff 100644
--- a/src/data_provider/words.rs
+++ b/src/data_provider/words.rs
@@ -1,9 +1,7 @@
-use crate::data::entities::{WordData, WordGroup};
+use crate::data::entities::WordData;
 use crate::data::repositories::{DataRepository, DataRepositoryInner};
 use crate::data_provider::{SqliteDbLayer, TableAccessQuerySet};
-use crate::notification::NotificationData::{DbLoadError, DbSaveError};
-use crate::notification::{MaybeError, NotificationData};
-use rusqlite::{Connection, Error, Params, Row, params};
+use rusqlite::{Error, Params, Row};
 
 pub type WordRepository = DataRepository<WordData, WordDataLayer>;
 pub type WordRepositoryInner = DataRepositoryInner<WordData, WordDataLayer>;
@@ -58,171 +56,4 @@ impl TableAccessQuerySet<WordData> for WordQuerySet {
             entity.id,
         )
     }
-}
-
-pub fn add_word(word: &mut WordData, connection: &Connection) -> MaybeError {
-    let index : u32 = connection
-        .query_row(
-            "INSERT INTO words (key, value, tags, more, group_id) VALUES (?1, ?2, ?3, ?4, ?5)",
-            (
-                &word.key,
-                &word.value,
-                &word.tags,
-                serde_json::to_string(&word.additional).unwrap_or_default(),
-                &word.group_id,
-            ),
-            |row| row.get(0),
-        ).map_err(|_| DbSaveError)?;
-
-    word.id = index.into();
-    Ok(())
-}
-
-pub fn add_words(words: &mut [WordData], connection: &mut Connection) -> MaybeError {
-    let tx = connection.transaction().map_err(|_| DbLoadError)?;
-    let count = words.len();
-
-    {
-        let mut stmt = tx
-            .prepare(
-                "INSERT INTO words (key, value, tags, more, group_id) VALUES (?1, ?2, ?3, ?4, ?5)",
-            )
-            .expect("Failed to prepare statement");
-
-        for word in words.iter() {
-            stmt.execute(params![
-                word.key,
-                word.value,
-                word.tags,
-                serde_json::to_string(&word.additional).unwrap_or_default(),
-                word.group_id
-            ])
-            .map_err(|_| DbSaveError)?;
-        }
-    }
-
-    let last_index: u32 = tx.last_insert_rowid() as u32;
-    tx.commit().map_err(|_| DbSaveError)?;
-
-    let start_index = last_index - (count as u32) + 1;
-
-    for (index, id) in (start_index..=last_index).enumerate() {
-        words[index].id = id.into();
-    }
-
-    Ok(())
-}
-
-pub fn update_word(word: &mut WordData, connection: &Connection) -> MaybeError {
-    if !word.id.is_valid() {
-        Ok(add_word(word, connection)?)
-    } else {
-        connection
-            .execute(
-                "UPDATE words SET key = ?1, value = ?2, tags = ?3, more = ?4 WHERE id = ?5",
-                (
-                    &word.key,
-                    &word.value,
-                    &word.tags,
-                    serde_json::to_string(&word.additional).map_err(|_| DbSaveError)?,
-                    &word.id,
-                ),
-            )
-            .map_err(|_| DbSaveError)?;
-        Ok(())
-    }
-}
-
-pub fn delete_word(word: &WordData, connection: &Connection) -> MaybeError {
-    if !word.id.is_valid() {
-        return Err(DbSaveError);
-    }
-    connection
-        .execute("DELETE FROM words WHERE id = ?1", (&word.id,))
-        .map_err(|_| DbSaveError)?;
-    Ok(())
-}
-
-pub fn load_words(connection: &Connection) -> Result<Vec<WordData>, NotificationData> {
-    let mut stmt = connection
-        .prepare("SELECT id, key, value, tags, more, group_id FROM words")
-        .expect("Failed to prepare statement");
-    let word_iter = stmt
-        .query_map([], |row| {
-            let additional: String = row.get(4)?;
-            Ok(WordData {
-                id: row.get(0)?,
-                key: row.get(1)?,
-                value: row.get(2)?,
-                tags: row.get(3)?,
-                additional: serde_json::from_str(&additional).unwrap_or_default(),
-                group_id: row.get(5)?,
-            })
-        })
-        .map_err(|_| DbLoadError)?;
-
-    let mut buffer = Vec::with_capacity(1024);
-    word_iter
-        .filter_map(|res| res.ok())
-        .for_each(|i| buffer.push(i));
-
-    Ok(buffer)
-}
-
-pub fn load_word_groups(connection: &Connection) -> Result<Vec<WordGroup>, NotificationData> {
-    let mut stmt = connection
-        .prepare("SELECT id, name FROM word_groups")
-        .expect("Failed to prepare statement");
-    let group_iter = stmt
-        .query_map([], |row| {
-            Ok(WordGroup {
-                id: row.get(0)?,
-                name: row.get(1)?,
-            })
-        })
-        .map_err(|_| DbLoadError)?;
-
-    let mut buffer = Vec::with_capacity(8);
-    group_iter
-        .filter_map(|res| res.ok())
-        .for_each(|i| buffer.push(i));
-
-    Ok(buffer)
-}
-
-pub fn add_group(group: &mut WordGroup, connection: &Connection) -> MaybeError {
-    let index: u32 = connection
-        .query_row(
-            "INSERT INTO word_groups (name) VALUES (?1)",
-            (&group.name,),
-            |row| row.get(0),
-        )
-        .map_err(|_| DbSaveError)?;
-
-    group.id = index.into();
-    Ok(())
-}
-
-pub fn update_group(group: &mut WordGroup, connection: &Connection) -> MaybeError {
-    if !group.id.is_valid() {
-        Ok(add_group(group, connection)?)
-    } else {
-        connection
-            .execute(
-                "UPDATE word_groups SET name = ?1 WHERE id = ?2",
-                (&group.name, &group.id),
-            )
-            .map_err(|_| DbSaveError)?;
-        Ok(())
-    }
-}
-
-pub fn delete_group(group: &WordGroup, connection: &Connection) -> MaybeError {
-    if !group.id.is_valid() {
-        return Err(DbSaveError);
-    }
-    connection
-        .execute("DELETE FROM word_groups WHERE id = ?1", (&group.id,))
-        .map_err(|_| DbSaveError)?;
-    Ok(())
-}
+}
\ No newline at end of file
diff --git a/src/fs.rs b/src/fs.rs
index 5ef1e37..f6e5e8e 100644
--- a/src/fs.rs
+++ b/src/fs.rs
@@ -28,14 +28,6 @@ pub fn db_meta_path() -> PathBuf {
     app_data_dir().join("data.meta")
 }
 
-pub fn history_dir() -> Result<PathBuf, NotificationData> {
-    let directory = app_data_dir().join("history");
-    if !directory.exists() {
-        fs::create_dir_all(directory.clone()).map_err(|_| PermissionDenied)?;
-    }
-    Ok(directory)
-}
-
 pub fn voice_dir() -> Result<PathBuf, NotificationData> {
     let directory = app_data_dir().join("voice");
     if !directory.exists() {
diff --git a/src/navigation.rs b/src/navigation.rs
index e205793..be23c81 100644
--- a/src/navigation.rs
+++ b/src/navigation.rs
@@ -1,5 +1,5 @@
-use crate::app::{fill_state, AppState};
-use crate::data_provider::sqlite::{create_db};
+use crate::app::{AppState, fill_state};
+use crate::data_provider::sqlite::create_db;
 use crate::data_provider::web_api::{
     get_local_version, get_web_version, load_data, set_local_version,
 };
diff --git a/src/pages/dictionary.rs b/src/pages/dictionary.rs
index ea699db..3470630 100644
--- a/src/pages/dictionary.rs
+++ b/src/pages/dictionary.rs
@@ -11,9 +11,9 @@ use crate::pages::dictionary::DictionaryMessage::*;
 use crate::pages::dictionary_quiz::DictionaryQuizState;
 use crate::pages::import::ImportState;
 use crate::pages::word::WordState;
-use crate::{jl_button, push_error};
 use crate::push_error_task;
 use crate::styling::*;
+use crate::{jl_button, push_error};
 use chrono::{DateTime, TimeDelta, Utc};
 use hashbrown::{HashMap, HashSet};
 use iced::alignment::Vertical::Center;
@@ -434,15 +434,13 @@ impl DictionaryState {
             if !data.handle.real() {
                 return button("-")
                     .on_press(WordAction(data.handle))
-                    .style(
-                        |_x: &Theme, _status: button::Status| Style {
-                            background: None,
-                            text_color: Color::BLACK,
-                            border: Border::default(),
-                            shadow: Shadow::default(),
-                            snap: false,
-                        },
-                    )
+                    .style(|_x: &Theme, _status: button::Status| Style {
+                        background: None,
+                        text_color: Color::BLACK,
+                        border: Border::default(),
+                        shadow: Shadow::default(),
+                        snap: false,
+                    })
                     .width(15);
             }
 
@@ -512,15 +510,16 @@ impl DictionaryState {
         let dict = &self.state.dictionary.write();
         let mut words_query = dict.full_query();
         let handles = words_query.handles().collect::<Vec<_>>();
-        words_query.iter(dict).zip(handles).for_each(|(element, handle)| {
-            let tags = split_with_coma(element.tags.as_str());
-                tags.iter()
-                .for_each(|tag| {
+        words_query
+            .iter(dict)
+            .zip(handles)
+            .for_each(|(element, handle)| {
+                let tags = split_with_coma(element.tags.as_str());
+                tags.iter().for_each(|tag| {
                     tags_list.insert(tag.clone());
                 });
-            self.words_tags.push((handle, tags))
-
-        });
+                self.words_tags.push((handle, tags))
+            });
 
         let current_tags = self
             .tag_map
diff --git a/src/pages/dictionary_quiz.rs b/src/pages/dictionary_quiz.rs
index 865004a..129dc98 100644
--- a/src/pages/dictionary_quiz.rs
+++ b/src/pages/dictionary_quiz.rs
@@ -1,4 +1,7 @@
+use crate::app::AppState;
 use crate::data::entities::{EntityHandle, WordData};
+use crate::data::repositories::Repository;
+use crate::jl_button;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::RootMessage;
 use crate::navigation::*;
@@ -6,15 +9,12 @@ use crate::pages::dictionary::split_with_coma;
 use crate::pages::dictionary_quiz::DictionaryQuizMessage::*;
 use crate::pages::quiz::Score;
 use crate::styling::*;
-use iced::Background::Color;
 use iced::border::Radius;
 use iced::widget::container::Style;
-use iced::widget::{Row, button, container, row, space, text, text_input};
-use iced::{Border, Element, Fill, Task, Theme, alignment};
+use iced::widget::{container, row, space, text, text_input, Row};
+use iced::Background::Color;
+use iced::{alignment, Border, Element, Fill, Task, Theme};
 use rand::prelude::SliceRandom;
-use crate::app::AppState;
-use crate::data::repositories::Repository;
-use crate::jl_button;
 
 pub struct DictionaryQuizState {
     state: AppState,
@@ -91,11 +91,8 @@ impl NavigatedPage<DictionaryQuizMessage> for DictionaryQuizState {
                         .size(25),
                 ]
                 .spacing(DEFAULT_SPACING),
-                row![
-                    jl_button!("Закончить").on_press(Back),
-                    self.appeal_button()
-                ]
-                .spacing(DEFAULT_SPACING),
+                row![jl_button!("Закончить").on_press(Back), self.appeal_button()]
+                    .spacing(DEFAULT_SPACING),
             ]
             .spacing(DEFAULT_SPACING)
             .align_x(alignment::Horizontal::Center),
@@ -107,8 +104,13 @@ impl NavigatedPage<DictionaryQuizMessage> for DictionaryQuizState {
 }
 
 impl DictionaryQuizState {
-    pub fn new(words: Vec<EntityHandle<WordData>>, reverse: bool, no_typing: bool, state: AppState) -> DictionaryQuizState {
-        let state = DictionaryQuizState {
+    pub fn new(
+        words: Vec<EntityHandle<WordData>>,
+        reverse: bool,
+        no_typing: bool,
+        state: AppState,
+    ) -> DictionaryQuizState {
+        Self {
             state,
             words,
             current_set: Vec::new(),
@@ -120,9 +122,7 @@ impl DictionaryQuizState {
             reverse,
             laps: 0,
             no_typing,
-        };
-
-        state
+        }
     }
 
     fn submit(&mut self) {
diff --git a/src/pages/history.rs b/src/pages/history.rs
index 7665efe..b3a730c 100644
--- a/src/pages/history.rs
+++ b/src/pages/history.rs
@@ -3,13 +3,13 @@ use crate::data::entities::{HistoryNote, WordData};
 use crate::data::repositories::Repository;
 use crate::navigation::*;
 use crate::styling::*;
+use HistoryMessage::Back;
 use chrono::Local;
 use iced::alignment::Horizontal::Center;
 use iced::widget::space::horizontal;
 use iced::widget::*;
 use iced::{Element, Fill, FillPortion, Task};
 use std::sync::Arc;
-use HistoryMessage::Back;
 
 #[derive(Clone)]
 pub struct HistoryState {
@@ -37,9 +37,9 @@ impl NavigatedPage<HistoryMessage> for HistoryState {
                     .width(FillPortion(5)),
                 horizontal().width(FillPortion(1))
             ]
-                .height(Fill)
-                .width(Fill)
-                .into(),
+            .height(Fill)
+            .width(Fill)
+            .into(),
             Back,
         )
     }
@@ -50,23 +50,22 @@ impl HistoryState {
         let dict = &state.dictionary.read();
         let history_repo = &mut state.history.write();
         history_repo.init().expect("TODO: panic message");
-        let id = id.clone();
+        let id = id;
         let mut history = history_repo.query(Arc::new(move |h| h.deck_id == id));
         let words = history
             .iter(history_repo)
-            .map(
-                |item| {let handle = dict.handle_by_id(item.word_id);
-                    let word = dict.get_static(handle).unwrap_or(WordData {
-                        id: Default::default(),
-                        group_id: Default::default(),
-                        key: "Удаленное слово".to_string(),
-                        value: "".to_string(),
-                        tags: "".to_string(),
-                        additional: Default::default(),
-                    });
-                    (word, item.clone())
-                }
-            )
+            .map(|item| {
+                let handle = dict.handle_by_id(item.word_id);
+                let word = dict.get_static(handle).unwrap_or(WordData {
+                    id: Default::default(),
+                    group_id: Default::default(),
+                    key: "Удаленное слово".to_string(),
+                    value: "".to_string(),
+                    tags: "".to_string(),
+                    additional: Default::default(),
+                });
+                (word, item.clone())
+            })
             .collect();
         Self {
             list: words,
@@ -77,30 +76,28 @@ impl HistoryState {
     fn history_lines(&self) -> Column<'_, HistoryMessage> {
         let mut column = Column::new();
         for (index, item) in &self.list {
-
             let activity = item;
             column = column.push(
                 row![
                     iced::widget::column![
-                        text!("{}", index.key)
-                            .width(Fill)
-                            .align_x(Center),
-                        text!("{}", index.value)
-                            .width(Fill)
-                            .align_x(Center),
+                        text!("{}", index.key).width(Fill).align_x(Center),
+                        text!("{}", index.value).width(Fill).align_x(Center),
                     ]
                     .align_x(Center),
                     iced::widget::column![
                         text!("{} ➞ {}", activity.before, activity.after),
                         text!(
                             "{}",
-                            activity.timestamp.with_timezone(&Local).format("%d.%m %H:%M")
+                            activity
+                                .timestamp
+                                .with_timezone(&Local)
+                                .format("%d.%m %H:%M")
                         )
                     ]
                     .spacing(5)
                     .align_x(Center)
                 ]
-                    .spacing(5),
+                .spacing(5),
             );
             column = column.push(rule::horizontal(1));
         }
diff --git a/src/pages/import.rs b/src/pages/import.rs
index b5dd9f0..7d72651 100644
--- a/src/pages/import.rs
+++ b/src/pages/import.rs
@@ -1,15 +1,15 @@
 use crate::app::AppState;
-use crate::data::entities::EntityData;
 use crate::data::entities::WordData;
 use crate::data::entities::WordGroup;
+use crate::data::repositories::{BatchedRepository, Repository};
 use crate::data_provider::import::{ImportData, ImportGroup, get_words_of_group, load_groups};
 use crate::fs::*;
+use crate::jl_button;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::notification::NotificationData::OpenFileError;
 use crate::notification::{MaybeError, NotificationData};
 use crate::pages::import::ImportMessage::*;
 use crate::push_error;
-use crate::jl_button;
 use crate::styling::*;
 use iced::widget::button::danger;
 use iced::widget::container::success;
@@ -31,7 +31,6 @@ use std::path::PathBuf;
 use std::sync::Arc;
 use tokio::task::spawn_blocking;
 use zip::ZipArchive;
-use crate::data::repositories::{BatchedRepository, Repository};
 
 const DEFAULT_FIELDS: [&str; 6] = ["key", "value", "tags", "reading", "context", "description"];
 
@@ -436,7 +435,8 @@ impl ImportState {
             async move {
                 spawn_blocking(move || {
                     let temp_file_path = temp_import_path();
-                    let connection = Connection::open(&temp_file_path).map_err(|_| OpenFileError)?;
+                    let connection =
+                        Connection::open(&temp_file_path).map_err(|_| OpenFileError)?;
                     let import_list = get_words_of_group(&connection, group.id)?;
                     let mut words_list = Vec::with_capacity(import_list.len());
 
diff --git a/src/pages/quiz.rs b/src/pages/quiz.rs
index 46f606e..b50c361 100644
--- a/src/pages/quiz.rs
+++ b/src/pages/quiz.rs
@@ -1,5 +1,6 @@
 use crate::app::USER_FONT;
 use crate::core::kana_set::KanaSet;
+use crate::jl_button;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::pages::quiz::QuizMessage::*;
@@ -7,7 +8,6 @@ use crate::styling::*;
 use iced::widget::*;
 use iced::{Element, Fill, Task, alignment};
 use rand::seq::SliceRandom;
-use crate::jl_button;
 
 #[derive(Clone, Debug)]
 pub struct QuizState {
diff --git a/src/pages/randomizer.rs b/src/pages/randomizer.rs
index 19b5908..c0dcff6 100644
--- a/src/pages/randomizer.rs
+++ b/src/pages/randomizer.rs
@@ -1,8 +1,8 @@
+use crate::jl_button;
 use crate::navigation::RootMessage;
 use crate::navigation::{NavigatedPage, Page};
 use crate::pages::randomizer::RandomizerMessage::{Back, Edit, Start};
 use crate::styling::{HALF_SPACING, back_overlay};
-use crate::jl_button;
 use iced::Task;
 use iced::widget::text_editor;
 use rand::prelude::SliceRandom;
diff --git a/src/pages/repetition.rs b/src/pages/repetition.rs
index 6542d48..fea90c2 100644
--- a/src/pages/repetition.rs
+++ b/src/pages/repetition.rs
@@ -5,11 +5,11 @@ use crate::data::Id;
 use crate::data::entities::{CardState, WordData};
 use crate::data::repositories::Repository;
 use crate::data_provider::voice::get_voice;
+use crate::jl_button;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{KeyPressedPage, NavigatedPage, Page, RootMessage};
 use crate::notification::{MaybeError, NotificationData};
 use crate::pages::repetitions::DeckRunData;
-use crate::jl_button;
 use crate::styling::*;
 use crate::{push_error, push_error_task};
 use iced::alignment::Horizontal::Center;
diff --git a/src/pages/repetition_settings.rs b/src/pages/repetition_settings.rs
index 8770aeb..c86af10 100644
--- a/src/pages/repetition_settings.rs
+++ b/src/pages/repetition_settings.rs
@@ -2,11 +2,11 @@ use crate::app::AppState;
 use crate::core::deck::DeckData;
 use crate::data::entities::{DeckSettings, EntityHandle};
 use crate::data::repositories::{BatchedRepository, Repository};
+use crate::jl_button;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::notification::MaybeError;
 use crate::pages::repetition_settings::RepetitionSettingsMessage::*;
-use crate::jl_button;
 use crate::styling::*;
 use crate::{push_error, push_error_task};
 use iced::widget::button::danger;
@@ -123,7 +123,10 @@ impl NavigatedPage<RepetitionSettingsMessage> for RepetitionSettingsState {
                 }
                 let mut states = self.state.card_states.write();
                 let deck_id = self.settings_handle.id;
-                let mut query = states.query(Arc::new(move |state| {state.deck_id == deck_id})).handles().collect::<Vec<_>>();
+                let mut query = states
+                    .query(Arc::new(move |state| state.deck_id == deck_id))
+                    .handles()
+                    .collect::<Vec<_>>();
                 if let Err(e) = states.delete_many(query.as_mut_slice()) {
                     return push_error_task!(e);
                 }
@@ -164,8 +167,7 @@ impl NavigatedPage<RepetitionSettingsMessage> for RepetitionSettingsState {
                                     primary
                                 })
                                 .on_input(SetFilter),
-                            jl_button!("Проверить фильтр")
-                                .on_press(TryFilter),
+                            jl_button!("Проверить фильтр").on_press(TryFilter),
                             self.count_view(),
                         ]
                         .spacing(QUARTER_SPACING),
@@ -211,7 +213,7 @@ fn update_deck_stats(deck: &DeckSettings, state: &AppState) -> MaybeError {
     let deck_id = deck.id;
     let mut db_stats = states_repo
         .query_par(Arc::new(move |s| s.deck_id == deck_id))
-        .iter(&states_repo)
+        .iter(states_repo)
         .collect::<Vec<_>>();
     let filtered_words = DeckData::list(deck, state)
         .iter()
diff --git a/src/pages/repetitions.rs b/src/pages/repetitions.rs
index 57ba9e3..27e2acd 100644
--- a/src/pages/repetitions.rs
+++ b/src/pages/repetitions.rs
@@ -3,6 +3,7 @@ use crate::core::deck::DeckData;
 use crate::core::srs::{AppendMode, OrderMode};
 use crate::data::entities::{CardState, DeckSettings, EntityHandle, WordData};
 use crate::data::repositories::{BatchedRepository, Repository};
+use crate::jl_button;
 use crate::navigation::Page::{History, PreviousPage, Repetition, RepetitionSettings};
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::notification::MaybeError;
@@ -12,21 +13,20 @@ use crate::pages::repetition_settings::RepetitionSettingsState;
 use crate::pages::repetitions::RepetitionsMessage::*;
 use crate::push_error;
 use crate::push_error_task;
-use crate::jl_button;
 use crate::styling::*;
 use chrono::{Days, Local, Utc};
 use hashbrown::HashSet;
+use iced::widget::button::{danger, Status};
 pub use iced::widget::button::{Catalog, Style};
-use iced::widget::button::{Status, danger};
 use iced::widget::tooltip::Position::Top;
 use iced::widget::{
-    Column, Row, button, column, container, lazy, radio, row, scrollable, space, svg, text,
-    text_input, tooltip,
+    button, column, container, lazy, radio, row, scrollable, space, svg, text, text_input, tooltip,
+    Column, Row,
 };
 use iced::{Background, Border, Center, Color, Element, Fill, Length, Shadow, Task, Theme};
-use iced_core::Padding;
 use iced_core::border::Radius;
 use iced_core::svg::Handle;
+use iced_core::Padding;
 use std::collections::BTreeMap;
 use std::ops::Deref;
 use std::sync::Arc;
@@ -95,7 +95,7 @@ impl NavigatedPage<RepetitionsMessage> for RepetitionsState {
                 self.clear_selection();
             }
         } else {
-            let _ = self.fill_deck_word_indices();
+            self.fill_deck_word_indices();
         }
     }
     fn update(&mut self, message: RepetitionsMessage) -> Task<RootMessage> {
@@ -127,7 +127,7 @@ impl NavigatedPage<RepetitionsMessage> for RepetitionsState {
             DeleteSet => {
                 let index = self.selected_deck_handle.unwrap();
                 self.clear_selection();
-                let deck = self.decks.remove(&index);
+                self.decks.remove(&index);
 
                 if index.real() {
                     let mut repo = self.state.decks.write();
@@ -153,7 +153,7 @@ impl NavigatedPage<RepetitionsMessage> for RepetitionsState {
                 let mut repo = self.state.decks.write();
 
                 repo.set(handle, deck.general_settings.clone());
-                let old = handle.clone();
+                let old = *handle;
                 if let Err(err) = repo.save(handle) {
                     return push_error_task!(err);
                 }
@@ -176,7 +176,7 @@ impl NavigatedPage<RepetitionsMessage> for RepetitionsState {
             }
             TryFilter => {
                 let deck = self.selected_deck().unwrap();
-                let count = DeckData::list(&deck, &self.state).len();
+                let count = DeckData::list(deck, &self.state).len();
                 let deck = self.selected_deck_mut().unwrap();
                 deck.count = Some(count);
             }
@@ -228,9 +228,7 @@ impl NavigatedPage<RepetitionsMessage> for RepetitionsState {
             row![
                 column![
                     scrollable(self.decks_list()).height(Fill),
-                    jl_button!("Добавить")
-                        .width(Fill)
-                        .on_press(CreateSet),
+                    jl_button!("Добавить").width(Fill).on_press(CreateSet),
                 ]
                 .spacing(DEFAULT_SPACING)
                 .width(Length::FillPortion(1)),
@@ -256,9 +254,7 @@ impl RepetitionsState {
         }
     }
 
-    fn get_decks_from_state(
-        state: &AppState,
-    ) -> BTreeMap<EntityHandle<DeckSettings>, DeckRunData> {
+    fn get_decks_from_state(state: &AppState) -> BTreeMap<EntityHandle<DeckSettings>, DeckRunData> {
         state
             .decks
             .read()
@@ -331,8 +327,7 @@ impl RepetitionsState {
                                     column![
                                         text!("Фильтр"),
                                         text_input("", &deck.filter).on_input(SetFilter),
-                                        jl_button!("Проверить фильтр")
-                                            .on_press(TryFilter),
+                                        jl_button!("Проверить фильтр").on_press(TryFilter),
                                         self.count_view(deck),
                                     ]
                                     .spacing(QUARTER_SPACING),
@@ -519,7 +514,7 @@ impl RepetitionsState {
     fn decks_list(&self) -> Column<'_, RepetitionsMessage> {
         let mut column = Column::new();
 
-        for (i, (handle, deck)) in self.decks.iter().enumerate() {
+        for (handle, deck) in self.decks.iter() {
             column = column.push(
                 button(text!("{}", &deck.name))
                     .on_press_with(move || SelectSet(*handle))
@@ -565,7 +560,6 @@ impl RepetitionsState {
         deck: &DeckSettings,
         indices: impl Iterator<Item = EntityHandle<WordData>>,
     ) -> MaybeError {
-        let words = &state.dictionary;
         let stats = &mut indices
             .map(|i| CardState {
                 id: 0.into(),
diff --git a/src/pages/selector.rs b/src/pages/selector.rs
index f4b893e..825a16f 100644
--- a/src/pages/selector.rs
+++ b/src/pages/selector.rs
@@ -1,5 +1,6 @@
 use crate::app::AppState;
 use crate::core::kana_set::{KanaSet, KanaType};
+use crate::jl_button;
 use crate::navigation::Page::*;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::pages::dictionary::DictionaryState;
@@ -12,13 +13,10 @@ use crate::pages::writing::WritingState;
 use crate::styling::*;
 use iced::widget::button::{Status, Style};
 use iced::widget::*;
-use iced::{Element, Task, alignment};
+use iced::{alignment, Element, Task};
 use iced_core::Alignment::Center;
 use iced_core::Background;
 use iced_core::Color;
-use parking_lot::Mutex;
-use std::sync::Arc;
-use crate::jl_button;
 
 pub struct SelectorState {
     pub set: KanaSet,
@@ -82,8 +80,7 @@ impl NavigatedPage<SelectorMessage> for SelectorState {
         container(
             iced::widget::column![
                 row![
-                    jl_button!("あ ↔ ア")
-                        .on_press(SelectorMessage::Change),
+                    jl_button!("あ ↔ ア").on_press(SelectorMessage::Change),
                     button("Словарь")
                         .on_press(SelectorMessage::ToDictionary)
                         .style(Self::nav_style),
diff --git a/src/pages/sync.rs b/src/pages/sync.rs
index 31317b1..db92f77 100644
--- a/src/pages/sync.rs
+++ b/src/pages/sync.rs
@@ -2,11 +2,11 @@ use crate::app::AppState;
 use crate::data::repositories::Repository;
 use crate::data_provider::settings::{delete_settings, set_setting};
 use crate::data_provider::web_api::*;
+use crate::jl_button;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::notification::{NotificationData, NotificationRequest};
 use crate::pages::sync::SyncMessage::*;
-use crate::jl_button;
 use crate::styling::*;
 use crate::{push_error, push_error_task};
 use iced::widget::button::danger;
@@ -241,10 +241,8 @@ impl SyncState {
                 ]
             } else {
                 column![
-                    jl_button!("Создать сохранение")
-                        .on_press(InitSync),
-                    jl_button!("Вставить ключ из буфера")
-                        .on_press(GetKey),
+                    jl_button!("Создать сохранение").on_press(InitSync),
+                    jl_button!("Вставить ключ из буфера").on_press(GetKey),
                 ]
             }
         }
@@ -271,12 +269,10 @@ impl SyncState {
             .unwrap_or_else(|e| {
                 error!("Ошибка при checkpoint WAL: {e}");
             });
-        connection
-            .execute("VACUUM;", [])
-            .unwrap_or_else(|e| {
-                error!("Ошибка при checkpoint WAL: {e}");
-                0
-            });
+        connection.execute("VACUUM;", []).unwrap_or_else(|e| {
+            error!("Ошибка при checkpoint WAL: {e}");
+            0
+        });
         connection
             .execute("PRAGMA optimize;", [])
             .unwrap_or_else(|e| {
diff --git a/src/pages/word.rs b/src/pages/word.rs
index bb57c89..aafc7b5 100644
--- a/src/pages/word.rs
+++ b/src/pages/word.rs
@@ -1,17 +1,12 @@
 use crate::app::AppState;
 use crate::data::entities::{EntityHandle, WordData};
-use crate::data_provider::words::{delete_word, update_word};
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::pages::word::WordMessage::*;
-use crate::push_error;
-use crate::push_error_task;
 use crate::styling::*;
 use iced::widget::button::danger;
-use iced::widget::{button, column, row, rule, scrollable, space, text, text_input};
+use iced::widget::{button, column, row, space, text, text_input};
 use iced::{Element, Fill, Task};
-use parking_lot::Mutex;
-use std::sync::Arc;
 
 #[derive(Clone)]
 pub struct WordState {
@@ -137,10 +132,7 @@ impl NavigatedPage<WordMessage> for WordState {
 
 impl WordState {
     pub fn new(handle: EntityHandle<WordData>, state: AppState) -> Self {
-        Self{
-            state,
-            handle,
-        }
+        Self { state, handle }
     }
 }
 
diff --git a/src/pages/writing.rs b/src/pages/writing.rs
index f156553..20db3f5 100644
--- a/src/pages/writing.rs
+++ b/src/pages/writing.rs
@@ -1,7 +1,7 @@
 use crate::core::kana_set::KanaSet;
+use crate::jl_button;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
-use crate::jl_button;
 use crate::styling::*;
 use iced::widget::*;
 use iced::{Element, Fill, Task, alignment};
@@ -46,10 +46,8 @@ impl NavigatedPage<WritingMessage> for WritingState {
                 text!("{}", self.kana).size(48),
                 self.answers(),
                 row![
-                    jl_button!(text!("{}", self.next_text))
-                        .on_press(WritingMessage::Next),
-                    jl_button!("Закончить")
-                        .on_press(WritingMessage::Back),
+                    jl_button!(text!("{}", self.next_text)).on_press(WritingMessage::Next),
+                    jl_button!("Закончить").on_press(WritingMessage::Back),
                 ]
                 .spacing(DEFAULT_SPACING)
             ]
diff --git a/src/styling.rs b/src/styling.rs
index 8406b0c..852d4bf 100644
--- a/src/styling.rs
+++ b/src/styling.rs
@@ -39,13 +39,10 @@ macro_rules! jl_button {
 
 pub fn back_overlay<'a, T: Clone + 'a>(content: Element<'a, T>, back_message: T) -> Element<'a, T> {
     container(
-        iced::widget::column![
-            jl_button!("Назад").on_press(back_message),
-            content
-        ]
-        .spacing(DEFAULT_SPACING)
-        .align_x(Left)
-        .width(Fill),
+        iced::widget::column![jl_button!("Назад").on_press(back_message), content]
+            .spacing(DEFAULT_SPACING)
+            .align_x(Left)
+            .width(Fill),
     )
     .center_x(Fill)
     .padding(10)
diff --git a/src/tests.rs b/src/tests.rs
index c2e777a..584b91e 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -73,13 +73,13 @@ mod mod_tests {
     #[test]
     fn id_0() {
         let entity: EntityHandle<ProtoEntity> = EntityHandle::new(8.into(), 25, true);
-        assert_eq!(entity.real(), true)
+        assert!(entity.real())
     }
 
     #[test]
     fn id_1() {
         let entity: EntityHandle<ProtoEntity> = EntityHandle::new(8.into(), 25, false);
-        assert_eq!(entity.real(), false)
+        assert!(!entity.real())
     }
 
     #[test]
@@ -97,14 +97,14 @@ mod mod_tests {
     fn id_5() {
         let mut entity: EntityHandle<ProtoEntity> = EntityHandle::new(8.into(), 25, true);
         entity.set_real(true);
-        assert_eq!(entity.real(), true)
+        assert!(entity.real())
     }
 
     #[test]
     fn id_6() {
         let mut entity: EntityHandle<ProtoEntity> = EntityHandle::new(8.into(), 25, false);
         entity.set_real(true);
-        assert_eq!(entity.real(), true)
+        assert!(entity.real())
     }
 
     #[test]