Merge pull request 'Db layers' (#14) from db_layers into master

Reviewed-on: https://gitea.micialware.ru/micialware/jap_learn/pulls/14

Cargo.lock

@@ -2456,6 +2456,7 @@ dependencies = [
  "hex",
  "iced",
  "iced_core",
+ "litemap",
  "log",
  "mimalloc",
  "parking_lot",
@@ -2739,9 +2740,12 @@ checksum = "df1d3c3b53da64cf5760482273a98e575c651a67eec7f77df96b5b642de8f039"
 
 [[package]]
 name = "litemap"
-version = "0.8.2"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92daf443525c4cce67b150400bc2316076100ce0b3686209eb8cf3c31612e6f0"
+checksum = "47d9d19d1d6efa0109d2f65ff4c85cddd50bd572e5a00127ab10987290bcefae"
+dependencies = [
+ "serde_core",
+]
 
 [[package]]
 name = "litrs"

Cargo.toml

@@ -27,6 +27,7 @@ parking_lot = "0.12.5"
 env_logger = "0.11.11"
 log = "0.4.34"
 fsrs = "6.6.1"
+litemap = { version = "0.8.3", features = ["serde"] }
 
 [profile.super-release]
 inherits = "release"

src/core/deck.rs

@@ -15,7 +15,7 @@ use std::sync::Arc;
 #[derive(Clone)]
 pub struct DeckData {
     pub(crate) words: Vec<WordData>,
-    pub(crate) set: Vec<CardStatistics>,
+    pub(crate) set: Vec<CardState>,
     current_word_index: Option<usize>,
     state: Arc<Mutex<AppState>>,
     order_module: OrderModule,
@@ -54,7 +54,7 @@ impl DeckData {
         })
     }
 
-    pub fn next(&mut self) -> (WordData, CardStatistics) {
+    pub fn next(&mut self) -> (WordData, CardState) {
         let index = match self.order_module {
             SemiRandomSRS(ref mut module) => {
                 if !module.initialized {
@@ -88,7 +88,7 @@ impl DeckData {
     }
     pub fn open(&mut self, status: WordOpenMode) -> MaybeError {
         if let Some(index) = self.current_word_index {
-            let word: &mut CardStatistics = &mut self.set[index];
+            let word: &mut CardState = &mut self.set[index];
             let old_score = word.score;
             word.update(status);
             let new_score = word.score;

src/core/srs.rs

@@ -1,4 +1,4 @@
-use crate::data::entities::CardStatistics;
+use crate::data::entities::CardState;
 use chrono::{Local, TimeDelta};
 use fsrs::FSRS;
 use rand::distr::weighted::WeightedIndex;
@@ -31,9 +31,9 @@ pub enum OrderModule {
     Fsrs(FsrsModule),
 }
 pub trait SRSModule {
-    fn next(&mut self, set: &[CardStatistics]) -> usize;
+    fn next(&mut self, set: &[CardState]) -> usize;
-    fn open(&mut self, status: WordOpenMode, index: usize, updated_word: &mut CardStatistics);
+    fn open(&mut self, status: WordOpenMode, index: usize, updated_word: &mut CardState);
-    fn init(&mut self, set: &[CardStatistics]);
+    fn init(&mut self, set: &[CardState]);
 }
 #[derive(Clone)]
 pub struct RandomSRSModule {
@@ -49,7 +49,7 @@ impl RandomSRSModule {
     }
 }
 impl SRSModule for RandomSRSModule {
-    fn next(&mut self, set: &[CardStatistics]) -> usize {
+    fn next(&mut self, set: &[CardState]) -> usize {
         match self.basket.pop() {
             Some(index) => index,
             None => {
@@ -60,9 +60,9 @@ impl SRSModule for RandomSRSModule {
         }
     }
 
-    fn open(&mut self, _: WordOpenMode, _: usize, _: &mut CardStatistics) {}
+    fn open(&mut self, _: WordOpenMode, _: usize, _: &mut CardState) {}
 
-    fn init(&mut self, set: &[CardStatistics]) {
+    fn init(&mut self, set: &[CardState]) {
         self.initialized = true;
         self.basket = (0..set.len()).collect::<Vec<usize>>();
         self.basket.shuffle(&mut rand::rng())
@@ -86,7 +86,7 @@ impl SemiRandomSRSModule {
     }
 }
 impl SRSModule for SemiRandomSRSModule {
-    fn next(&mut self, set: &[CardStatistics]) -> usize {
+    fn next(&mut self, set: &[CardState]) -> usize {
         let index = self.last_weights.sample(&mut self.generator);
 
         if self.history.contains(&index) && self.history.len() != 1 {
@@ -100,13 +100,13 @@ impl SRSModule for SemiRandomSRSModule {
 
         index
     }
-    fn open(&mut self, _: WordOpenMode, index: usize, word: &mut CardStatistics) {
+    fn open(&mut self, _: WordOpenMode, index: usize, word: &mut CardState) {
         let new_weight = (100.0 / word.calculated_score()).powf(2.0);
         self.last_weights
             .update_weights(&[(index, &new_weight)])
             .expect("update weights error");
     }
-    fn init(&mut self, set: &[CardStatistics]) {
+    fn init(&mut self, set: &[CardState]) {
         self.initialized = true;
         let weights = set
             .iter()
@@ -116,7 +116,7 @@ impl SRSModule for SemiRandomSRSModule {
     }
 }
 impl SemiRandomSRSModule {
-    fn history_len(&self, set: &[CardStatistics]) -> usize {
+    fn history_len(&self, set: &[CardState]) -> usize {
         ((set.len() as f32 * MAX_HISTORY_LEN_PART) as usize).clamp(1, MAX_HISTORY_LEN)
     }
 }
@@ -130,7 +130,7 @@ pub struct WorstWordsSRSModule {
     rounds_count: u8,
 }
 impl SRSModule for WorstWordsSRSModule {
-    fn next(&mut self, set: &[CardStatistics]) -> usize {
+    fn next(&mut self, set: &[CardState]) -> usize {
         if self.rounds_remaining == 0 {
             self.fill_pool(set);
             self.rounds_remaining = self.rounds_count;
@@ -146,9 +146,9 @@ impl SRSModule for WorstWordsSRSModule {
         }
     }
 
-    fn open(&mut self, _: WordOpenMode, _: usize, _: &mut CardStatistics) {}
+    fn open(&mut self, _: WordOpenMode, _: usize, _: &mut CardState) {}
 
-    fn init(&mut self, _: &[CardStatistics]) {
+    fn init(&mut self, _: &[CardState]) {
         self.initialized = true;
     }
 }
@@ -163,7 +163,7 @@ impl WorstWordsSRSModule {
             queue: vec![],
         }
     }
-    fn fill_pool(&mut self, set: &[CardStatistics]) {
+    fn fill_pool(&mut self, set: &[CardState]) {
         let mut sorted = set.iter().enumerate().collect::<Vec<_>>();
         sorted.sort_by_key(|c| c.1.score);
         let mut worst = sorted[0..self.pool_size]
@@ -187,7 +187,7 @@ pub struct FsrsModule {
 }
 
 impl SRSModule for FsrsModule {
-    fn next(&mut self, _: &[CardStatistics]) -> usize {
+    fn next(&mut self, _: &[CardState]) -> usize {
         if self.current_group.is_empty() {
             self.fill_partial_pool();
         }
@@ -200,7 +200,7 @@ impl SRSModule for FsrsModule {
         self.queue.pop().unwrap_or(0)
     }
 
-    fn open(&mut self, status: WordOpenMode, index: usize, updated_word: &mut CardStatistics) {
+    fn open(&mut self, status: WordOpenMode, index: usize, updated_word: &mut CardState) {
         let today = Local::now().date_naive();
         let delta = today - updated_word.fsrs_opened;
         let delta_days = delta.num_days();
@@ -233,7 +233,7 @@ impl SRSModule for FsrsModule {
         }
     }
 
-    fn init(&mut self, set: &[CardStatistics]) {
+    fn init(&mut self, set: &[CardState]) {
         self.rng = rng();
         let today = Local::now().date_naive();
         self.today_set = set

src/data.rs

@@ -3,61 +3,68 @@ pub mod repositories;
 
 use rusqlite::ToSql;
 use rusqlite::types::{FromSql, FromSqlError, FromSqlResult, ToSqlOutput, ValueRef};
-use std::fmt::{Display, Formatter};
+use std::fmt::{write, Display, Formatter};
 use std::num::ParseIntError;
 use std::str::FromStr;
 
+macro_rules! id_impl {
+    ($id_type:ty, $name:ident, $invalid:ident) => {
         #[derive(Clone, PartialEq, Eq, Debug, Hash, Copy, Ord, PartialOrd, Default)]
-pub struct Id(pub(crate) u32);
+        pub struct $name(pub(crate) $id_type);
-pub const INVALID_ID: Id = Id(0);
+        pub const $invalid: $name = $name(0);
-impl FromStr for Id {
+        impl FromStr for $name {
             type Err = ParseIntError;
 
             fn from_str(s: &str) -> Result<Self, Self::Err> {
-        Ok(Id(s.parse::<u32>()?))
+                Ok($name(s.parse::<$id_type>()?))
             }
         }
 
-impl From<u32> for Id {
+        impl From<$id_type> for $name {
-    fn from(value: u32) -> Self {
+            fn from(value: $id_type) -> Self {
-        Id(value)
+                $name(value)
             }
         }
 
-impl From<Id> for u32 {
+        impl From<$name> for $id_type {
-    fn from(value: Id) -> Self {
+            fn from(value: $name) -> Self {
                 value.0
             }
         }
-impl Display for Id {
+        impl Display for $name {
             fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
                 write!(f, "{}", self.0)
             }
         }
 
-impl FromSql for Id {
+        impl FromSql for $name {
             fn column_result(value: ValueRef<'_>) -> FromSqlResult<Self> {
                 match value {
-            ValueRef::Integer(i) => Ok(Id(i as u32)),
+                    ValueRef::Integer(i) => Ok($name(i as $id_type)),
                     _ => Err(FromSqlError::InvalidType),
                 }
             }
         }
 
-impl ToSql for Id {
+        impl ToSql for $name {
             fn to_sql(&self) -> rusqlite::Result<ToSqlOutput<'_>> {
                 Ok(ToSqlOutput::from(self.0 as i64))
             }
         }
 
-impl From<Id> for String {
+        impl From<$name> for String {
-    fn from(value: Id) -> Self {
+            fn from(value: $name) -> Self {
                 value.0.to_string()
             }
         }
 
-impl Id {
+        impl $name {
             pub(crate) fn is_valid(self) -> bool {
                 self.0 != 0
             }
         }
+    }
+}
+
+id_impl!(u32, Id, INVALID_ID);
+id_impl!(u16, SmallId, INVALID_SMALL_ID);

src/data/entities.rs

@@ -7,18 +7,18 @@ use log::info;
 use rayon::prelude::*;
 use rhai::{Engine, Scope};
 use std::cmp::Ordering;
-use std::collections::HashMap;
 use std::marker::PhantomData;
 use std::time::Instant;
+use litemap::LiteMap;
 
 #[derive(Clone, Debug)]
 pub struct WordData {
     pub id: Id,
+    pub group_id: Id,
     pub key: String,
     pub value: String,
     pub tags: String,
-    pub additional: HashMap<String, String>,
+    pub additional: LiteMap<String, String>,
-    pub group_id: Id,
 }
 
 impl EntityData for WordData {
@@ -37,6 +37,16 @@ pub struct WordGroup {
     pub name: String,
 }
 
+impl EntityData for WordGroup {
+    fn id(&self) -> Id {
+        self.id
+    }
+
+    fn set_id(&mut self, id: Id) {
+        self.id = id;
+    }
+}
+
 impl WordData {
     pub fn new() -> Self {
         Self {
@@ -145,7 +155,7 @@ impl DeckSettings {
 }
 
 #[derive(Clone, PartialEq)]
-pub struct CardStatistics {
+pub struct CardState {
     pub id: Id,
     pub word_id: Id,
     pub set_id: Id,
@@ -155,7 +165,18 @@ pub struct CardStatistics {
     pub fsrs_memory: Option<MemoryState>,
     pub fsrs_open_day: NaiveDate,
 }
-impl CardStatistics {
+
+impl EntityData for CardState {
+    fn id(&self) -> Id {
+        self.id
+    }
+
+    fn set_id(&mut self, id: Id) {
+        self.id = id;
+    }
+}
+
+impl CardState {
     pub fn update(&mut self, status: WordOpenMode) {
         match status {
             WordOpenMode::Easy => {
@@ -185,7 +206,7 @@ impl CardStatistics {
 #[derive(Copy)]
 pub struct EntityHandle<E> {
     pub(crate) id: Id,
-    index: i32,
+    index: u32,
     pub(crate) _phantom: PhantomData<E>,
 }
 
@@ -202,7 +223,7 @@ impl<T> EntityHandle<T> {
     pub fn new(id: Id, index: usize, real: bool) -> Self {
         Self {
             id,
-            index: index as i32 | (!real as i32) << 31,
+            index: ((index as u32) << 1 >> 1) | (!real as u32) << 31,
             _phantom: Default::default(),
         }
     }
@@ -211,7 +232,7 @@ impl<T> EntityHandle<T> {
     }
 
     pub fn set_index(&mut self, index: usize) {
-        self.index = self.index >> 31 << 31 | index as i32;
+        self.index = (self.index >> 31 << 31) | ((index as u32) << 1 >> 1);
     }
 
     pub fn real(&self) -> bool {
@@ -219,7 +240,7 @@ impl<T> EntityHandle<T> {
     }
 
     pub fn set_real(&mut self, value: bool) {
-        self.index = self.index << 1 >> 1 | (!value as i32) << 31;
+        self.index = self.index << 1 >> 1 | (!value as u32) << 31;
     }
 }
 impl<T> Eq for EntityHandle<T> {}

src/data/repositories.rs

@@ -24,6 +24,7 @@ where
     fn save(&mut self, entity: &mut EntityHandle<T>) -> MaybeError;
     fn delete(&mut self, handle: EntityHandle<T>) -> MaybeError;
     fn init(&mut self) -> MaybeError;
+    fn start(&mut self) -> MaybeError;
     fn reload(&mut self) -> MaybeError;
 }
 
@@ -178,8 +179,8 @@ pub trait BatchedDbLayer<T>
 where
     T: EntityData,
 {
-    fn delete_many_entities(&mut self, ids: &[Id], connection: &Connection) -> MaybeError;
+    fn delete_many_entities(&mut self, ids: &[Id], connection: &mut Connection) -> MaybeError;
-    fn add_many_entities(&mut self, entity: &mut [T], connection: &Connection) -> MaybeError;
+    fn add_many_entities(&mut self, entity: &mut [T], connection: &mut Connection) -> MaybeError;
 }
 
 #[derive(Clone)]
@@ -375,6 +376,15 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
         Ok(())
     }
 
+    fn start(&mut self) -> MaybeError {
+        if self.version != 0 {
+            return Ok(())
+        }
+
+        self.init()?;
+        Ok(())
+    }
+
     fn reload(&mut self) -> MaybeError {
         self.cache.clear();
         self.temporal.clear();
@@ -414,7 +424,7 @@ impl<T: EntityData + Clone, D: BatchedDbLayer<T> + DbLayer<T>> BatchedRepository
         });
 
         self.data_layer
-            .add_many_entities(&mut temp_values, &self.connection.read())?;
+            .add_many_entities(&mut temp_values, &mut self.connection.write())?;
 
         let start = self.cache.len();
 
@@ -456,7 +466,7 @@ impl<T: EntityData + Clone, D: BatchedDbLayer<T> + DbLayer<T>> BatchedRepository
             !remove
         });
         self.data_layer
-            .delete_many_entities(cached.as_slice(), &self.connection.read())?;
+            .delete_many_entities(cached.as_slice(), &mut self.connection.write())?;
         let len = cached.len();
         cell = 0;
         self.cache.retain(|x| {

src/data_provider/card_states.rs

@@ -1,29 +1,79 @@
-use crate::data::entities::{CardStatistics, DeckSettings};
+use crate::data::entities::{CardState, DeckSettings};
+use crate::data_provider::TableAccessQuerySet;
 use crate::notification::NotificationData::{DbLoadError, DbSaveError};
 use crate::notification::{MaybeError, NotificationData};
 use chrono::NaiveDate;
 use fsrs::MemoryState;
 use log::info;
-use rusqlite::{Connection, params};
+use rusqlite::{Connection, Error, Params, Row, params};
 use std::time::Instant;
 
+pub struct CardStatesQuerySet;
+impl TableAccessQuerySet<CardState> for CardStatesQuerySet {
+    fn load() -> &'static str {
+        "SELECT id, word_id, set_id, score, last_opened, fsrs_opened, fsrs_memory, fsrs_open_day FROM states"
+    }
+
+    fn save() -> &'static str {
+        "UPDATE states SET score = ?1, last_opened = ?2 WHERE id = ?3"
+    }
+
+    fn add() -> &'static str {
+        "INSERT INTO states (word_id, set_id, score, last_opened, fsrs_opened, fsrs_memory, fsrs_open_day) VALUES (?1, ?2, ?3, ?4)"
+    }
+
+    fn name() -> &'static str {
+        "states"
+    }
+
+    fn from_sql(row: &Row) -> Result<CardState, Error> {
+        Ok(CardState {
+            id: row.get(0)?,
+            word_id: row.get(1)?,
+            set_id: row.get(2)?,
+            score: row.get(3)?,
+            fsrs_opened: NaiveDate::from_epoch_days(row.get::<usize, i32>(5)?)
+                .expect("Incorrect date encoding"),
+            fsrs_memory: get_memory(row.get(6)?),
+            last_open: row.get(4)?,
+            fsrs_open_day: NaiveDate::from_epoch_days(row.get::<usize, i32>(7)?)
+                .expect("Incorrect date encoding"),
+        })
+    }
+
+    fn insert_params(entity: &CardState) -> impl Params {
+        (
+            entity.word_id,
+            entity.set_id,
+            entity.score,
+            entity.last_open.timestamp(),
+            entity.fsrs_opened.to_epoch_days(),
+            memory_to_i64(&entity.fsrs_memory),
+            entity.fsrs_open_day.to_epoch_days(),
+        )
+    }
+
+    fn update_params(entity: &CardState) -> impl Params {
+        (entity.score, entity.last_open.timestamp(), entity.id)
+    }
+}
 pub fn load_stats_of_deck(
     set: &DeckSettings,
     connection: &Connection,
-) -> Result<Vec<CardStatistics>, NotificationData> {
+) -> 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(CardStatistics {
+            Ok(CardState {
                 id: row.get(0)?,
                 word_id: row.get(1)?,
                 set_id: set.id,
                 score: row.get(2)?,
                 fsrs_opened: NaiveDate::from_epoch_days(row.get::<usize, i32>(4)?)
                     .expect("Incorrect date encoding"),
-                fsrs_memory: Some(get_memory(row.get(5)?)),
+                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"),
@@ -37,18 +87,25 @@ pub fn load_stats_of_deck(
     Ok(buffer)
 }
 
-fn get_memory(value: i64) -> MemoryState {
+fn get_memory(value: i64) -> Option<MemoryState> {
-    MemoryState {
+    if value == 0 {
+        return None;
+    }
+    Some(MemoryState {
         stability: f32::from_bits(value as u32),
         difficulty: f32::from_bits((value >> 32) as u32),
-    }
+    })
 }
 
-fn memory_to_i64(value: &MemoryState) -> i64 {
+fn memory_to_i64(value: &Option<MemoryState>) -> i64 {
+    let Some(value) = &value else {
+        return 0;
+    };
+
     value.stability.to_bits() as i64 | ((value.difficulty.to_bits() as i64) << 32)
 }
 
-pub fn add_stat_list(stats: &mut [CardStatistics], connection: &mut Connection) -> MaybeError {
+pub fn add_stat_list(stats: &mut [CardState], connection: &mut Connection) -> MaybeError {
     let time = Instant::now();
     let tx = connection
         .transaction()
@@ -69,10 +126,7 @@ pub fn add_stat_list(stats: &mut [CardStatistics], connection: &mut Connection)
                 stat.score,
                 stat.last_open.timestamp(),
                 stat.fsrs_opened.to_epoch_days(),
-                memory_to_i64(&stat.fsrs_memory.unwrap_or(MemoryState {
+                memory_to_i64(&stat.fsrs_memory),
-                    difficulty: 0.0,
-                    stability: 0.0
-                })),
                 stat.fsrs_open_day.to_epoch_days()
             ])
             .map_err(|_| DbSaveError)?;
@@ -92,7 +146,7 @@ pub fn add_stat_list(stats: &mut [CardStatistics], connection: &mut Connection)
     Ok(())
 }
 
-pub fn update_stat_score(stat: &CardStatistics, connection: &Connection) -> MaybeError {
+pub fn update_stat_score(stat: &CardState, connection: &Connection) -> MaybeError {
     let time = Instant::now();
 
     connection
@@ -105,7 +159,7 @@ pub fn update_stat_score(stat: &CardStatistics, connection: &Connection) -> Mayb
     Ok(())
 }
 
-pub fn delete_stats(stat: &[CardStatistics], connection: &Connection) -> MaybeError {
+pub fn delete_stats(stat: &[CardState], connection: &Connection) -> MaybeError {
     if stat.is_empty() {
         return Ok(());
     }

src/data_provider/decks.rs

@@ -1,8 +1,54 @@
 use crate::core::srs::OrderMode;
-use crate::data::entities::DeckSettings;
+use crate::data::entities::{CardState, DeckSettings};
+use crate::data_provider::TableAccessQuerySet;
 use crate::notification::NotificationData::{DbLoadError, DbSaveError};
 use crate::notification::{MaybeError, NotificationData};
-use rusqlite::Connection;
+use chrono::NaiveDate;
+use rusqlite::{Connection, Error, Params, Row};
+
+pub struct DeckQuerySet;
+impl TableAccessQuerySet<DeckSettings> for DeckQuerySet {
+    fn load() -> &'static str {
+        "SELECT id, name, forward, backward, filter FROM decks"
+    }
+
+    fn save() -> &'static str {
+        "UPDATE decks SET name = ?1, forward = ?2, backward = ?3, filter = ?4 WHERE id = ?5"
+    }
+
+    fn add() -> &'static str {
+        "INSERT INTO states (word_id, set_id, score, last_opened, fsrs_opened, fsrs_memory, fsrs_open_day) VALUES (?1, ?2, ?3, ?4)"
+    }
+
+    fn name() -> &'static str {
+        "decks"
+    }
+
+    fn from_sql(row: &Row) -> Result<DeckSettings, Error> {
+        Ok(DeckSettings {
+            id: row.get(0)?,
+            name: row.get(1)?,
+            forward: row.get(2)?,
+            backward: row.get(3)?,
+            filter: row.get(4)?,
+            count: None,
+            open_mode: OrderMode::Default,
+        })
+    }
+
+    fn insert_params(entity: &DeckSettings) -> impl Params {
+        (
+            &entity.name,
+            &entity.forward,
+            &entity.backward,
+            &entity.filter,
+        )
+    }
+
+    fn update_params(entity: &DeckSettings) -> impl Params {
+        (&entity.name, &entity.forward, &entity.backward, &entity.filter, entity.id)
+    }
+}
 
 pub fn load_sets(connection: &Connection) -> Result<Vec<DeckSettings>, NotificationData> {
     let mut stmt = connection

src/data_provider/mod.rs

@@ -1,3 +1,13 @@
+use crate::data::Id;
+use crate::data::entities::{CardState, EntityData};
+use crate::data::repositories::{BatchedDbLayer, DbLayer};
+use crate::notification::MaybeError;
+use crate::notification::NotificationData::{DbLoadError, DbSaveError};
+use log::info;
+use rusqlite::{Connection, Error, Params, Row};
+use std::marker::PhantomData;
+use std::time::Instant;
+
 pub(crate) mod card_states;
 pub(crate) mod decks;
 pub(crate) mod history;
@@ -7,3 +17,155 @@ pub(crate) mod sqlite;
 pub(crate) mod voice;
 pub(crate) mod web_api;
 pub(crate) mod words;
+
+pub trait TableAccessQuerySet<T> {
+    fn load() -> &'static str;
+    fn save() -> &'static str;
+    fn add() -> &'static str;
+    fn name() -> &'static str;
+    fn from_sql(row: &Row) -> Result<T, Error>;
+    fn insert_params(entity: &T) -> impl Params;
+    fn update_params(entity: &T) -> impl Params;
+}
+
+pub struct SqliteDbLayer<T, Q>
+where
+    Q: TableAccessQuerySet<T>,
+{
+    _phantom: PhantomData<(T, Q)>,
+}
+
+impl<T: EntityData, Q: TableAccessQuerySet<T>> DbLayer<T> for SqliteDbLayer<T, Q> {
+    fn write_entity(&self, entity: &T, connection: &Connection) -> MaybeError {
+        let time = Instant::now();
+
+        connection
+            .execute(Q::load(), Q::update_params(entity))
+            .map_err(|_| DbSaveError)?;
+        info!(
+            "Updated in {} for {:?}",
+            Q::name(),
+            time.elapsed()
+        );
+        Ok(())
+    }
+
+    fn add_entity(&mut self, entity: &mut T, connection: &Connection) -> MaybeError {
+        let time = Instant::now();
+
+        let index: u32 = connection
+            .query_row(Q::add(), Q::insert_params(entity), |row| row.get(0))
+            .map_err(|_| DbSaveError)?;
+
+        entity.set_id(index.into());
+        info!(
+            "Added into {} for {:?}",
+            Q::name(),
+            time.elapsed()
+        );
+        Ok(())
+    }
+
+    fn delete_entity(&mut self, id: Id, connection: &Connection) -> MaybeError {
+        let time = Instant::now();
+
+        if !id.is_valid() {
+            return Err(DbSaveError);
+        }
+        connection
+            .execute(
+                format!("DELETE FROM {} WHERE id = ?1", Q::name()).as_str(),
+                (&id,),
+            )
+            .map_err(|_| DbSaveError)?;
+        info!(
+            "Deleted from {} for {:?}",
+            Q::name(),
+            time.elapsed()
+        );
+        Ok(())
+    }
+
+    fn load_all(&self, storage: &mut Vec<T>, connection: &Connection) -> MaybeError {
+        let time = Instant::now();
+
+        let mut stmt = connection
+            .prepare(Q::load())
+            .expect("Failed to prepare state query");
+        let iter = stmt
+            .query_map([], |row| Ok(Q::from_sql(row)?))
+            .map_err(|_| DbLoadError)?;
+
+        iter.filter_map(|res| res.ok())
+            .for_each(|i| storage.push(i));
+        info!(
+            "Loaded {} from {} for {:?}",
+            storage.len(),
+            Q::name(),
+            time.elapsed()
+        );
+
+        Ok(())
+    }
+}
+
+impl<T: EntityData, Q: TableAccessQuerySet<T>> BatchedDbLayer<T> for SqliteDbLayer<T, Q> {
+    fn delete_many_entities(&mut self, ids: &[Id], connection: &mut Connection) -> MaybeError {
+        let time = Instant::now();
+
+        for chunk in ids.chunks(1000) {
+            let stringed = chunk
+                .iter()
+                .map(|i| i.to_string())
+                .collect::<Vec<_>>()
+                .join(",");
+            connection
+                .execute(
+                    format!("DELETE FROM {} WHERE id in ({})", Q::name(), stringed).as_str(),
+                    (),
+                )
+                .map_err(|_| DbSaveError)?;
+        }
+        info!(
+            "Deleted {} from {} for {:?}",
+            ids.len(),
+            Q::name(),
+            time.elapsed()
+        );
+
+        Ok(())
+    }
+
+    fn add_many_entities(&mut self, entities: &mut [T], connection: &mut Connection) -> MaybeError {
+        let time = Instant::now();
+        let tx = connection
+            .transaction()
+            .expect("Failed to create transaction");
+        let count = entities.len();
+
+        {
+            let mut stmt = tx.prepare(Q::add()).expect("Failed to prepare state query");
+            for entity in entities.iter() {
+                stmt.execute(Q::insert_params(entity))
+                    .map_err(|_| DbSaveError)?;
+            }
+        }
+
+        let last_index: u32 = tx.last_insert_rowid() as u32;
+        tx.commit().expect("Failed to commit");
+
+        let start_index = last_index - (count as u32) + 1;
+
+        for (index, id) in (start_index..=last_index).enumerate() {
+            entities[index].set_id(id.into());
+        }
+
+        info!(
+            "Added {} into {} for {:?}",
+            entities.len(),
+            Q::name(),
+            time.elapsed()
+        );
+        Ok(())
+    }
+}

src/data_provider/sqlite.rs

@@ -65,4 +65,15 @@ pub fn default_connection() -> Connection {
         .execute("PRAGMA foreign_keys = ON;", [])
         .expect("Failed to set PRAGMA");
     connection
+        .query_one("PRAGMA journal_mode = WAL;", [], |row| {
+            println!("{:?}", row);
+            Ok(())
+        })
+        .unwrap_or_else(|e| {
+            println!("{}", e);
+        });
+    connection
+        .execute("PRAGMA synchronous = NORMAL;", [])
+        .expect("Failed to set PRAGMA");
+    connection
 }

src/data_provider/words.rs

@@ -1,8 +1,96 @@
 use crate::data::entities::{WordData, WordGroup};
+use crate::data_provider::TableAccessQuerySet;
 use crate::notification::NotificationData::{DbLoadError, DbSaveError};
 use crate::notification::{MaybeError, NotificationData};
-use rusqlite::{Connection, params};
+use rusqlite::{Connection, Error, Params, Row, params};
 use std::collections::HashMap;
+use litemap::LiteMap;
+
+pub struct WordQuerySet;
+impl TableAccessQuerySet<WordData> for WordQuerySet {
+    fn load() -> &'static str {
+        "SELECT id, key, value, tags, more, group_id FROM words"
+    }
+
+    fn save() -> &'static str {
+        "UPDATE words SET key = ?1, value = ?2, tags = ?3, more = ?4 WHERE id = ?5"
+    }
+
+    fn add() -> &'static str {
+        "INSERT INTO words (key, value, tags, more, group_id) VALUES (?1, ?2, ?3, ?4, ?5)"
+    }
+
+    fn name() -> &'static str {
+        "words"
+    }
+
+    fn from_sql(row: &Row) -> Result<WordData, Error> {
+        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)?,
+        })
+    }
+
+    fn insert_params(entity: &WordData) -> impl Params {
+        (
+            &entity.key,
+            &entity.value,
+            &entity.tags,
+            serde_json::to_string(&entity.additional).unwrap_or_default(),
+            entity.group_id,
+        )
+    }
+
+    fn update_params(entity: &WordData) -> impl Params {
+        (
+            &entity.key,
+            &entity.value,
+            &entity.tags,
+            serde_json::to_string(&entity.additional).unwrap_or_default(),
+            entity.id,
+        )
+    }
+}
+
+pub struct WordGroupQuerySet;
+impl TableAccessQuerySet<WordGroup> for WordGroupQuerySet {
+    fn load() -> &'static str {
+        "SELECT id, name FROM word_groups"
+    }
+
+    fn save() -> &'static str {
+        "UPDATE word_groups SET name = ?1 WHERE id = ?2"
+    }
+
+    fn add() -> &'static str {
+        "INSERT INTO word_groups (name) VALUES (?1)"
+    }
+
+    fn name() -> &'static str {
+        "word_groups"
+    }
+
+    fn from_sql(row: &Row) -> Result<WordGroup, Error> {
+        Ok(WordGroup {
+            id: row.get(0)?,
+            name: row.get(1)?,
+        })
+    }
+
+    fn insert_params(entity: &WordGroup) -> impl Params {
+        (&entity.name,)
+    }
+
+    fn update_params(entity: &WordGroup) -> impl Params {
+        (&entity.name, entity.id)
+    }
+}
 
 pub fn add_word(word: &mut WordData, connection: &Connection) -> MaybeError {
     let index : u32 = connection
@@ -99,7 +187,7 @@ pub fn load_words(connection: &Connection) -> Result<Vec<WordData>, Notification
                 key: row.get(1)?,
                 value: row.get(2)?,
                 tags: row.get(3)?,
-                additional: serde_json::from_str::<HashMap<String, String>>(&additional)
+                additional: serde_json::from_str(&additional)
                     .unwrap_or_default(),
                 group_id: row.get(5)?,
             })

src/notification.rs

@@ -139,7 +139,7 @@ impl NotificationManager {
     fn draw_data<'a>(data: &NotificationData) -> Element<'a, NotificationMessage> {
         match data {
             NotificationData::DataLoaded => {
-                text!("Данные успешно скачаны")
+                text!("Данные успешно загружены на сервер")
             }
             NotificationData::ImportError => {
                 text!("Ошибка при импорте данных из Anki")
@@ -154,7 +154,7 @@ impl NotificationManager {
                 text!("Не получается подключиться к VoiceVox")
             }
             NotificationData::PermissionDenied => {
-                text!("У приложение недостаточно прав")
+                text!("У приложение недостаточно прав для доступа в файлам")
             }
             NotificationData::WebApiUnavailable => {
                 text!("Не получается подключиться к Api")

src/pages/repetition.rs

@@ -2,7 +2,7 @@ use crate::app::AppState;
 use crate::core::deck::DeckData;
 use crate::core::srs::WordOpenMode;
 use crate::data::Id;
-use crate::data::entities::{CardStatistics, DeckSettings, WordData};
+use crate::data::entities::{CardState, DeckSettings, WordData};
 use crate::data_provider::voice::get_voice;
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{KeyPressedPage, NavigatedPage, Page, RootMessage};
@@ -26,7 +26,7 @@ pub struct RepetitionState {
     pub settings: DeckSettings,
     pub set: DeckData,
     current_word: WordData,
-    current_statistic: CardStatistics,
+    current_statistic: CardState,
     open: bool,
     can_play: bool,
     sink: Arc<Option<MixerDeviceSink>>,

src/pages/repetitions.rs

@@ -1,7 +1,7 @@
 use crate::app::AppState;
 use crate::core::srs::{AppendMode, OrderMode};
 use crate::data::Id;
-use crate::data::entities::{CardStatistics, DeckSettings};
+use crate::data::entities::{CardState, DeckSettings};
 use crate::data_provider::card_states::{add_stat_list, load_stats_of_deck};
 use crate::data_provider::decks::update_deck;
 use crate::navigation::Page::{History, PreviousPage, Repetition, RepetitionSettings};
@@ -585,7 +585,7 @@ impl RepetitionsState {
         let stats = &mut indices
             .map(|i| {
                 let word = &words[i];
-                CardStatistics {
+                CardState {
                     id: 0.into(),
                     word_id: word.id,
                     last_open: Utc::now(),