Repository start method

# Conflicts:
#	src/data/entities.rs

Cargo.lock

@@ -1003,7 +1003,7 @@ dependencies = [
  "ciborium",
  "clap",
  "criterion-plot",
- "itertools",
+ "itertools 0.13.0",
  "num-traits",
  "oorandom",
  "page_size",
@@ -1023,7 +1023,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8d80a2f4f5b554395e47b5d8305bc3d27813bacb73493eb1001e8f76dae29ea"
 dependencies = [
  "cast",
- "itertools",
+ "itertools 0.13.0",
 ]
 
 [[package]]
@@ -1529,6 +1529,23 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"
 
+[[package]]
+name = "fsrs"
+version = "6.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8a99ea3dec9af37c9ed3835463ff6820a578a0026a8e370b4c1c0db48dfab3f"
+dependencies = [
+ "itertools 0.14.0",
+ "log",
+ "ndarray",
+ "priority-queue",
+ "rand",
+ "rayon",
+ "serde",
+ "snafu",
+ "strum",
+]
+
 [[package]]
 name = "futures"
 version = "0.3.31"
@@ -2411,6 +2428,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.17"
@@ -2425,10 +2451,12 @@ dependencies = [
  "criterion",
  "dirs",
  "env_logger",
+ "fsrs",
  "hashbrown 0.17.1",
  "hex",
  "iced",
  "iced_core",
+ "litemap",
  "log",
  "mimalloc",
  "parking_lot",
@@ -2712,9 +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"
@@ -2776,6 +2807,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "matrixmultiply"
+version = "0.3.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f607c237553f086e7043417a51df26b2eb899d3caff94e6a67592ff992fedc7"
+dependencies = [
+ "autocfg",
+ "rawpointer",
+]
+
 [[package]]
 name = "memchr"
 version = "2.8.0"
@@ -2912,6 +2953,21 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "ndarray"
+version = "0.17.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "520080814a7a6b4a6e9070823bb24b4531daac8c4627e08ba5de8c5ef2f2752d"
+dependencies = [
+ "matrixmultiply",
+ "num-complex",
+ "num-integer",
+ "num-traits",
+ "portable-atomic",
+ "portable-atomic-util",
+ "rawpointer",
+]
+
 [[package]]
 name = "ndk"
 version = "0.9.0"
@@ -2961,6 +3017,15 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-complex"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.2.2"
@@ -3773,6 +3838,17 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "priority-queue"
+version = "2.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93980406f12d9f8140ed5abe7155acb10bb1e69ea55c88960b9c2f117445ef96"
+dependencies = [
+ "equivalent",
+ "indexmap",
+ "serde",
+]
+
 [[package]]
 name = "proc-macro-crate"
 version = "3.4.0"
@@ -3951,6 +4027,12 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "20675572f6f24e9e76ef639bc5552774ed45f1c30e2951e1e99c59888861c539"
 
+[[package]]
+name = "rawpointer"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60a357793950651c4ed0f3f52338f53b2f809f32d83a07f72909fa13e4c6c1e3"
+
 [[package]]
 name = "rayon"
 version = "1.12.0"
@@ -4716,6 +4798,27 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "snafu"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e45cb604038abb7b926b679887b3226d8d0f23874b66623625a0454be425a4b7"
+dependencies = [
+ "snafu-derive",
+]
+
+[[package]]
+name = "snafu-derive"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "287f59010008f0d7cf5e3b03196d666c1acc46c8d3e9cf34c28a1a7157601e72"
+dependencies = [
+ "heck 0.5.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
 name = "socket2"
 version = "0.6.3"
@@ -4805,6 +4908,27 @@ dependencies = [
  "float-cmp",
 ]
 
+[[package]]
+name = "strum"
+version = "0.28.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9628de9b8791db39ceda2b119bbe13134770b56c138ec1d3af810d045c04f9bd"
+dependencies = [
+ "strum_macros",
+]
+
+[[package]]
+name = "strum_macros"
+version = "0.28.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab85eea0270ee17587ed4156089e10b9e6880ee688791d45a905f5b1ca36f664"
+dependencies = [
+ "heck 0.5.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.114",
+]
+
 [[package]]
 name = "subtle"
 version = "2.6.1"

Cargo.toml

@@ -26,13 +26,15 @@ rayon = "1.12.0"
 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"
 codegen-units = 1
 lto = true
 opt-level = 3
-strip = true
+#strip = true
 panic = "abort"
 
 [dev-dependencies]

sql/decks.sql

@@ -1,4 +1,4 @@
-create table card_set
+create table decks
 (
     id       INTEGER
         primary key autoincrement,

sql/history.sql

@@ -0,0 +1,12 @@
+create table history
+(
+    id INTEGER
+        primary key autoincrement,
+    set_id INTEGER not null references decks on delete cascade,
+    stat_id INTEGER not null references states on delete cascade,
+    timestamp INTEGER not null,
+    answer INTEGER not null,
+    before INTEGER not null,
+    after INTEGER not null,
+    fsrs INTEGER not null
+);

sql/states.sql

@@ -1,4 +1,4 @@
-create table card_stats
+create table states
 (
     id          INTEGER
         primary key autoincrement,
@@ -6,8 +6,11 @@ create table card_stats
         references words
             on delete cascade,
     set_id      INTEGER              not null
-        references card_set
+        references decks
             on delete cascade,
     score       INTEGER default 1 not null,
-    last_opened INTEGER           not null
+    last_opened INTEGER           not null,
+    fsrs_opened INTEGER not null,
+    fsrs_memory INTEGER not null,
+    fsrs_open_day INTEGER not null
 );

sql/word_groups.sql

@@ -1,4 +1,4 @@
-create table word_group
+create table word_groups
 (
     id   INTEGER
         primary key autoincrement,

sql/words.sql

@@ -7,7 +7,7 @@ create table words
     tags     TEXT              not null,
     more     TEXT,
     group_id integer default 1 not null
-        constraint words_word_group_id_fk
+        constraint words_word_groups_id_fk
-            references word_group
+            references word_groups
             on update cascade on delete cascade
 );

src/app.rs

@@ -1,7 +1,7 @@
 use crate::data::Id;
 use crate::data::entities::DeckSettings;
 use crate::data::entities::{WordData, WordGroup};
-use crate::data_provider::card_sets::load_sets;
+use crate::data_provider::decks::load_sets;
 use crate::data_provider::settings::get_setting;
 use crate::data_provider::sqlite::default_connection;
 use crate::data_provider::words::{load_word_groups, load_words};

src/core/deck.rs

@@ -1,10 +1,11 @@
 use crate::app::AppState;
+use crate::core::srs::OrderModule::{Fsrs, RandomSRS, SemiRandomSRS, WorstWordsSRS};
 use crate::core::srs::{
-    OrderMode, OrderModule, RandomSRSModule, SRSModule, SemiRandomSRSModule, WordOpenMode,
+    FsrsModule, OrderMode, OrderModule, RandomSRSModule, SRSModule, SemiRandomSRSModule,
-    WorstWordsSRSModule,
+    WordOpenMode, WorstWordsSRSModule,
 };
 use crate::data::entities::*;
-use crate::data_provider::card_stats::{load_stats_of_deck, update_stat_score};
+use crate::data_provider::card_states::{load_stats_of_deck, update_stat_score};
 use crate::data_provider::history::push_note;
 use crate::notification::{MaybeError, NotificationData};
 use chrono::Utc;
@@ -14,10 +15,11 @@ 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,
+    open_mode: OrderMode,
     settings: DeckSettings,
 }
 impl DeckData {
@@ -46,32 +48,34 @@ impl DeckData {
             words,
             current_word_index: None,
             state: state_for,
-            order_module: match settings.open_mode {
+            order_module: Fsrs(FsrsModule::new()),
-                OrderMode::Default => OrderModule::SemiRandomSRS(SemiRandomSRSModule::new()),
+            open_mode: settings.open_mode,
-                OrderMode::TrainWorstFirst => {
-                    OrderModule::WorstWordsSRS(WorstWordsSRSModule::new())
-                }
-                OrderMode::FullRandom => OrderModule::RandomSRS(RandomSRSModule::new()),
-            },
             settings: settings.clone(),
         })
     }
 
-    pub fn next(&mut self) -> (WordData, CardStatistics) {
+    pub fn next(&mut self) -> (WordData, CardState) {
         let index = match self.order_module {
-            OrderModule::SemiRandomSRS(ref mut module) => {
+            SemiRandomSRS(ref mut module) => {
                 if !module.initialized {
                     module.init(self.set.as_slice())
                 }
                 module.next(self.set.as_slice())
             }
-            OrderModule::RandomSRS(ref mut module) => {
+
+            RandomSRS(ref mut module) => {
                 if !module.initialized {
                     module.init(self.set.as_slice())
                 }
                 module.next(self.set.as_slice())
             }
-            OrderModule::WorstWordsSRS(ref mut module) => {
+            WorstWordsSRS(ref mut module) => {
+                if !module.initialized {
+                    module.init(self.set.as_slice())
+                }
+                module.next(self.set.as_slice())
+            }
+            Fsrs(ref mut module) => {
                 if !module.initialized {
                     module.init(self.set.as_slice())
                 }
@@ -84,21 +88,34 @@ 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;
 
             match self.order_module {
-                OrderModule::SemiRandomSRS(ref mut module) => {
+                SemiRandomSRS(ref mut module) => {
                     module.open(status, index, word);
                 }
-                OrderModule::RandomSRS(ref mut module) => {
+                RandomSRS(ref mut module) => {
                     module.open(status, index, word);
                 }
-                OrderModule::WorstWordsSRS(ref mut module) => {
+                WorstWordsSRS(ref mut module) => {
                     module.open(status, index, word);
                 }
+                Fsrs(ref mut module) => {
+                    module.open(status, index, word);
+                }
+            }
+
+            if let Fsrs(ref fsrs) = self.order_module
+                && fsrs.finished()
+            {
+                self.order_module = match self.open_mode {
+                    OrderMode::Default => SemiRandomSRS(SemiRandomSRSModule::new()),
+                    OrderMode::TrainWorstFirst => WorstWordsSRS(WorstWordsSRSModule::new()),
+                    OrderMode::FullRandom => RandomSRS(RandomSRSModule::new()),
+                }
             }
             update_stat_score(word, &self.state.lock().connection)?;
             let _ = push_note(

src/core/srs.rs

@@ -1,14 +1,16 @@
-use crate::data::entities::CardStatistics;
+use crate::data::entities::CardState;
+use chrono::{Local, TimeDelta};
+use fsrs::FSRS;
 use rand::distr::weighted::WeightedIndex;
 use rand::prelude::ThreadRng;
 use rand::prelude::{Distribution, SliceRandom};
-use rand::rng;
+use rand::{RngExt, rng};
 
 const MAX_HISTORY_LEN: usize = 20;
 const MAX_HISTORY_LEN_PART: f32 = 0.33;
 pub const MAX_SCORE: u8 = 25;
 pub const FADE_PER_DAY: f32 = 0.95;
-
+const PARTIAL_POOL_SIZE: usize = 10;
 #[derive(Clone, PartialEq, Copy, Eq)]
 pub enum OrderMode {
     Default,
@@ -26,11 +28,12 @@ pub enum OrderModule {
     SemiRandomSRS(SemiRandomSRSModule),
     RandomSRS(RandomSRSModule),
     WorstWordsSRS(WorstWordsSRSModule),
+    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: &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 {
@@ -46,7 +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 => {
@@ -57,9 +60,9 @@ impl SRSModule for RandomSRSModule {
         }
     }
 
-    fn open(&mut self, _: WordOpenMode, _: usize, _: &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())
@@ -83,7 +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 {
@@ -97,13 +100,13 @@ impl SRSModule for SemiRandomSRSModule {
 
         index
     }
-    fn open(&mut self, _: WordOpenMode, index: usize, word: &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()
@@ -113,7 +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)
     }
 }
@@ -127,7 +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;
@@ -143,9 +146,9 @@ impl SRSModule for WorstWordsSRSModule {
         }
     }
 
-    fn open(&mut self, _: WordOpenMode, _: usize, _: &CardStatistics) {}
+    fn open(&mut self, _: WordOpenMode, _: usize, _: &mut CardState) {}
 
-    fn init(&mut self, _: &[CardStatistics]) {
+    fn init(&mut self, _: &[CardState]) {
         self.initialized = true;
     }
 }
@@ -153,14 +156,14 @@ impl WorstWordsSRSModule {
     pub(crate) fn new() -> WorstWordsSRSModule {
         WorstWordsSRSModule {
             initialized: false,
-            pool_size: 15,
+            pool_size: PARTIAL_POOL_SIZE,
             rounds_count: 2,
             rounds_remaining: 0,
             pool: vec![],
             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]
@@ -172,6 +175,112 @@ impl WorstWordsSRSModule {
     }
 }
 
+#[derive(Clone)]
+pub struct FsrsModule {
+    today_set: Vec<usize>,
+    solved: Vec<usize>,
+    current_group: Vec<usize>,
+    queue: Vec<usize>,
+    rng: ThreadRng,
+    fsrs: FSRS,
+    pub(crate) initialized: bool,
+}
+
+impl SRSModule for FsrsModule {
+    fn next(&mut self, _: &[CardState]) -> usize {
+        if self.current_group.is_empty() {
+            self.fill_partial_pool();
+        }
+
+        if self.queue.is_empty() {
+            self.fill_queue();
+            self.queue.shuffle(&mut self.rng);
+        }
+
+        self.queue.pop().unwrap_or(0)
+    }
+
+    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();
+
+        let memory = self
+            .fsrs
+            .next_states(updated_word.fsrs_memory, 0.9, delta_days as u32)
+            .expect("Wrong next stage calculation");
+
+        let next = match status {
+            WordOpenMode::Easy => memory.easy,
+            WordOpenMode::Ok => memory.good,
+            WordOpenMode::Hard => memory.hard,
+            WordOpenMode::None => memory.again,
+        };
+
+        let mut next_day = today + TimeDelta::days(next.interval.round() as i64);
+        if (next_day - today).num_days() >= 5 {
+            let offset = ((rng().random::<f32>() - 0.5) * 3.0).round() as i32;
+            next_day += TimeDelta::days(offset as i64);
+        }
+        updated_word.fsrs_memory = Some(next.memory);
+        updated_word.fsrs_open_day = next_day;
+        updated_word.fsrs_opened = updated_word.last_open.date_naive();
+
+        if updated_word.fsrs_open_day != today {
+            self.solved.push(index);
+            let index = self.current_group.iter().position(|x| *x == index).unwrap();
+            self.current_group.remove(index);
+        }
+    }
+
+    fn init(&mut self, set: &[CardState]) {
+        self.rng = rng();
+        let today = Local::now().date_naive();
+        self.today_set = set
+            .iter()
+            .enumerate()
+            .filter(|(_, c)| c.fsrs_open_day <= today)
+            .map(|(index, _)| index)
+            .collect();
+        self.today_set.shuffle(&mut self.rng);
+        self.fill_partial_pool();
+        self.initialized = true;
+    }
+}
+
+impl FsrsModule {
+    pub fn new() -> Self {
+        Self {
+            today_set: vec![],
+            current_group: vec![],
+            queue: vec![],
+            solved: vec![],
+            rng: Default::default(),
+            fsrs: FSRS::default(),
+            initialized: false,
+        }
+    }
+    fn fill_partial_pool(&mut self) {
+        self.current_group.extend(
+            self.today_set
+                .iter()
+                .filter(|x| !self.solved.contains(*x))
+                .take(PARTIAL_POOL_SIZE),
+        );
+
+        self.queue.clear();
+        self.queue.extend(self.current_group.clone());
+    }
+
+    fn fill_queue(&mut self) {
+        self.queue.extend(self.current_group.clone());
+    }
+
+    pub fn finished(&self) -> bool {
+        self.today_set.len() == self.solved.len()
+    }
+}
+
 #[derive(Clone, Copy)]
 pub enum WordOpenMode {
     Easy,

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

@@ -1,24 +1,24 @@
 use crate::app::AppState;
 use crate::core::srs::{FADE_PER_DAY, MAX_SCORE, OrderMode, WordOpenMode};
 use crate::data::{INVALID_ID, Id};
-use crate::notification::MaybeError;
+use chrono::{DateTime, NaiveDate, Utc};
-use chrono::{DateTime, Utc};
+use fsrs::MemoryState;
 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 {
@@ -145,14 +155,28 @@ impl DeckSettings {
 }
 
 #[derive(Clone, PartialEq)]
-pub struct CardStatistics {
+pub struct CardState {
     pub id: Id,
     pub word_id: Id,
     pub set_id: Id,
     pub last_open: DateTime<Utc>,
     pub score: u8,
+    pub fsrs_opened: NaiveDate,
+    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 => {
@@ -182,7 +206,7 @@ impl CardStatistics {
 #[derive(Copy)]
 pub struct EntityHandle<E> {
     pub(crate) id: Id,
-    index: i32,
+    index: u32,
     pub(crate) _phantom: PhantomData<E>,
 }
 
@@ -199,7 +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(),
         }
     }
@@ -208,7 +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 {
@@ -216,7 +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

@@ -20,9 +20,11 @@ where
     fn get_mut(&mut self, handle: &mut EntityHandle<T>) -> Option<&mut T>;
     fn handle_by_id(&self, id: Id) -> EntityHandle<T>;
     fn create(&mut self, new: T) -> EntityHandle<T>;
+    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 init(&mut self) -> MaybeError;
+    fn start(&mut self) -> MaybeError;
     fn reload(&mut self) -> MaybeError;
 }
 
@@ -177,8 +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)]
@@ -317,6 +319,14 @@ impl<T: EntityData + Clone, D: DbLayer<T>> Repository<T, D> for DataRepositoryIn
         entity
     }
 
+    fn create_now(&mut self, mut new: T) -> Result<EntityHandle<T>, NotificationData> {
+        self.data_layer.add_entity(&mut new, &self.connection.read())?;
+        let index = self.cache.len();
+        let handle = EntityHandle::new(new.id(), index, true);
+        self.cache.push(new);
+        Ok(handle)
+    }
+
     fn save(&mut self, entity: &mut EntityHandle<T>) -> MaybeError {
         let original_state = entity.clone();
         if entity.real() {
@@ -366,6 +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();
@@ -405,7 +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();
 
@@ -447,7 +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

@@ -0,0 +1,178 @@
+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, 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<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)?,
+                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: 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 {
+        return None;
+    }
+    Some(MemoryState {
+        stability: f32::from_bits(value as u32),
+        difficulty: f32::from_bits((value >> 32) as u32),
+    })
+}
+
+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 [CardState], connection: &mut Connection) -> MaybeError {
+    let time = Instant::now();
+    let tx = connection
+        .transaction()
+        .expect("Failed to create transaction");
+    let count = stats.len();
+
+    {
+        let mut stmt = tx
+            .prepare(
+                "INSERT INTO states (word_id, set_id, score, last_opened, fsrs_opened, fsrs_memory, fsrs_open_day) VALUES (?1, ?2, ?3, ?4)",
+            )
+            .expect("Failed to prepare state query");
+
+        for stat in stats.iter() {
+            stmt.execute(params![
+                stat.word_id,
+                stat.set_id,
+                stat.score,
+                stat.last_open.timestamp(),
+                stat.fsrs_opened.to_epoch_days(),
+                memory_to_i64(&stat.fsrs_memory),
+                stat.fsrs_open_day.to_epoch_days()
+            ])
+            .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() {
+        stats[index].id = id.into();
+    }
+
+    info!("Added {} cards for {:?}", stats.len(), time.elapsed());
+    Ok(())
+}
+
+pub fn update_stat_score(stat: &CardState, connection: &Connection) -> MaybeError {
+    let time = Instant::now();
+
+    connection
+        .execute(
+            "UPDATE states SET score = ?1, last_opened = ?2 WHERE id = ?3",
+            (&stat.score, &stat.last_open.timestamp(), &stat.id),
+        )
+        .map_err(|_| DbSaveError)?;
+    info!("Updated stat: {}", time.elapsed().as_millis());
+    Ok(())
+}
+
+pub fn delete_stats(stat: &[CardState], connection: &Connection) -> MaybeError {
+    if stat.is_empty() {
+        return Ok(());
+    }
+    let ids = stat
+        .iter()
+        .map(|s| s.id.into())
+        .collect::<Vec<String>>()
+        .join(", ");
+    connection
+        .execute(
+            format!("DELETE FROM states WHERE id in ({ids})").as_str(),
+            (),
+        )
+        .map_err(|_| DbSaveError)?;
+    Ok(())
+}

src/data_provider/card_stats.rs

@@ -1,100 +0,0 @@
-use crate::data::entities::{CardStatistics, DeckSettings};
-use crate::notification::NotificationData::{DbLoadError, DbSaveError};
-use crate::notification::{MaybeError, NotificationData};
-use log::info;
-use rusqlite::{Connection, params};
-use std::time::Instant;
-
-pub fn load_stats_of_deck(
-    set: &DeckSettings,
-    connection: &Connection,
-) -> Result<Vec<CardStatistics>, NotificationData> {
-    let mut stmt = connection
-        .prepare("SELECT id, word_id, score, last_opened FROM card_stats WHERE set_id = ?1")
-        .expect("Failed to prepare state query");
-    let iter = stmt
-        .query_map((set.id,), |row| {
-            Ok(CardStatistics {
-                id: row.get(0)?,
-                word_id: row.get(1)?,
-                set_id: set.id,
-                score: row.get(2)?,
-                last_open: row.get(3)?,
-            })
-        })
-        .map_err(|_| DbLoadError)?;
-
-    let mut buffer = Vec::with_capacity(512);
-    iter.filter_map(|res| res.ok()).for_each(|i| buffer.push(i));
-
-    Ok(buffer)
-}
-
-pub fn add_stat_list(stats: &mut [CardStatistics], connection: &mut Connection) -> MaybeError {
-    let time = Instant::now();
-    let tx = connection
-        .transaction()
-        .expect("Failed to create transaction");
-    let count = stats.len();
-
-    {
-        let mut stmt = tx
-            .prepare(
-                "INSERT INTO card_stats (word_id, set_id, score, last_opened) VALUES (?1, ?2, ?3, ?4)",
-            )
-            .expect("Failed to prepare state query");
-
-        for stat in stats.iter() {
-            stmt.execute(params![
-                stat.word_id,
-                stat.set_id,
-                stat.score,
-                stat.last_open.timestamp()
-            ])
-            .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() {
-        stats[index].id = id.into();
-    }
-
-    info!("Added {} cards for {:?}", stats.len(), time.elapsed());
-    Ok(())
-}
-
-pub fn update_stat_score(stat: &CardStatistics, connection: &Connection) -> MaybeError {
-    let time = Instant::now();
-
-    connection
-        .execute(
-            "UPDATE card_stats SET score = ?1, last_opened = ?2 WHERE id = ?3",
-            (&stat.score, &stat.last_open.timestamp(), &stat.id),
-        )
-        .map_err(|_| DbSaveError)?;
-    info!("Updated stat: {}", time.elapsed().as_millis());
-    Ok(())
-}
-
-pub fn delete_stats(stat: &[CardStatistics], connection: &Connection) -> MaybeError {
-    if stat.is_empty() {
-        return Ok(());
-    }
-    let ids = stat
-        .iter()
-        .map(|s| s.id.into())
-        .collect::<Vec<String>>()
-        .join(", ");
-    connection
-        .execute(
-            format!("DELETE FROM card_stats WHERE id in ({ids})").as_str(),
-            (),
-        )
-        .map_err(|_| DbSaveError)?;
-    Ok(())
-}

src/data_provider/decks.rs

@@ -1,13 +1,58 @@
 use crate::core::srs::OrderMode;
-
+use crate::data::entities::{CardState, DeckSettings};
-use crate::data::entities::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
-        .prepare("SELECT id, name, forward, backward, filter FROM card_set")
+        .prepare("SELECT id, name, forward, backward, filter FROM decks")
         .expect("Failed to prepare state query");
     let iter = stmt
         .query_map([], |row| {
@@ -31,7 +76,7 @@ pub fn load_sets(connection: &Connection) -> Result<Vec<DeckSettings>, Notificat
 pub fn add_set(set: &mut DeckSettings, connection: &Connection) -> MaybeError {
     let index : u32 = connection
         .query_row(
-            "INSERT INTO card_set (name, forward, backward, filter) VALUES (?1, ?2, ?3, ?4) RETURNING id",
+            "INSERT INTO decks (name, forward, backward, filter) VALUES (?1, ?2, ?3, ?4) RETURNING id",
             (
                 &set.name,
                 &set.forward,
@@ -52,7 +97,7 @@ pub fn update_deck(set: &mut DeckSettings, connection: &Connection) -> MaybeErro
     } else {
         connection
             .execute(
-                "UPDATE card_set SET name = ?1, forward = ?2, backward = ?3, filter = ?4 WHERE id = ?5",
+                "UPDATE decks SET name = ?1, forward = ?2, backward = ?3, filter = ?4 WHERE id = ?5",
                 (
                     &set.name,
                     &set.forward,
@@ -71,7 +116,7 @@ pub fn delete_set(set: &DeckSettings, connection: &Connection) -> MaybeError {
         return Err(DbSaveError);
     }
     connection
-        .execute("DELETE FROM card_set WHERE id = ?1", (&set.id,))
+        .execute("DELETE FROM decks WHERE id = ?1", (&set.id,))
         .map_err(|_| DbSaveError)?;
     Ok(())
 }

src/data_provider/history.rs

@@ -4,12 +4,20 @@ use crate::data::entities::HistoryItem;
 use crate::fs::*;
 use crate::notification::NotificationData::PermissionDenied;
 use crate::notification::{MaybeError, NotificationData};
-use chrono::DateTime;
+use chrono::{DateTime, NaiveDate};
+use rusqlite::Connection;
 use std::fs::{File, OpenOptions};
 use std::io::Write;
 use std::io::{BufRead, BufReader};
 use std::path::PathBuf;
 
+pub fn get_open_count_of_set(
+    id: Id,
+    connection: &Connection,
+) -> Result<Vec<(NaiveDate, u32)>, NotificationData> {
+    todo!()
+}
+
 pub fn get_history_of_set(id: Id) -> Result<Vec<HistoryItem>, NotificationData> {
     let app_dir = history_dir()?;
     let head = app_dir.clone().join(format!("set_{}_history.csv", id));

src/data_provider/mod.rs

@@ -1,5 +1,15 @@
-pub(crate) mod card_sets;
+use crate::data::Id;
-pub(crate) mod card_stats;
+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;
 pub(crate) mod import;
 pub(crate) mod settings;
@@ -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

@@ -20,6 +20,7 @@ fn create_tables(conn: &Connection) {
     make_word_group(conn).expect("Failed to init table");
     make_words(conn).expect("Failed to init table");
     make_card_stats(conn).expect("Failed to init table");
+    make_history(conn).expect("Failed to init table");
 }
 
 fn make_settings(conn: &Connection) -> Result<(), rusqlite::Error> {
@@ -29,15 +30,15 @@ fn make_settings(conn: &Connection) -> Result<(), rusqlite::Error> {
 }
 
 fn make_card_set(conn: &Connection) -> Result<(), rusqlite::Error> {
-    let query = include_str!("../../sql/card_set.sql");
+    let query = include_str!("../../sql/decks.sql");
     conn.execute(query, ())?;
     Ok(())
 }
 
 fn make_word_group(conn: &Connection) -> Result<(), rusqlite::Error> {
-    let query = include_str!("../../sql/word_group.sql");
+    let query = include_str!("../../sql/word_groups.sql");
     conn.execute(query, ())?;
-    conn.execute("insert into word_group (name) values (\"Слова\");", ())?;
+    conn.execute("insert into word_groups (name) values (\"Слова\");", ())?;
     Ok(())
 }
 fn make_words(conn: &Connection) -> Result<(), rusqlite::Error> {
@@ -46,7 +47,13 @@ fn make_words(conn: &Connection) -> Result<(), rusqlite::Error> {
     Ok(())
 }
 fn make_card_stats(conn: &Connection) -> Result<(), rusqlite::Error> {
-    let query = include_str!("../../sql/card_stats.sql");
+    let query = include_str!("../../sql/states.sql");
+    conn.execute(query, ())?;
+    Ok(())
+}
+
+fn make_history(conn: &Connection) -> Result<(), rusqlite::Error> {
+    let query = include_str!("../../sql/history.sql");
     conn.execute(query, ())?;
     Ok(())
 }
@@ -58,4 +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)?,
             })
@@ -116,7 +204,7 @@ pub fn load_words(connection: &Connection) -> Result<Vec<WordData>, Notification
 
 pub fn load_word_groups(connection: &Connection) -> Result<Vec<WordGroup>, NotificationData> {
     let mut stmt = connection
-        .prepare("SELECT id, name FROM word_group")
+        .prepare("SELECT id, name FROM word_groups")
         .expect("Failed to prepare statement");
     let group_iter = stmt
         .query_map([], |row| {
@@ -138,7 +226,7 @@ pub fn load_word_groups(connection: &Connection) -> Result<Vec<WordGroup>, Notif
 pub fn add_group(group: &mut WordGroup, connection: &Connection) -> MaybeError {
     let index: u32 = connection
         .query_row(
-            "INSERT INTO word_group (name) VALUES (?1) RETURNING id",
+            "INSERT INTO word_groups (name) VALUES (?1) RETURNING id",
             (&group.name,),
             |row| row.get(0),
         )
@@ -154,7 +242,7 @@ pub fn update_group(group: &mut WordGroup, connection: &Connection) -> MaybeErro
     } else {
         connection
             .execute(
-                "UPDATE word_group SET name = ?1 WHERE id = ?2",
+                "UPDATE word_groups SET name = ?1 WHERE id = ?2",
                 (&group.name, &group.id),
             )
             .map_err(|_| DbSaveError)?;
@@ -167,7 +255,7 @@ pub fn delete_group(group: &WordGroup, connection: &Connection) -> MaybeError {
         return Err(DbSaveError);
     }
     connection
-        .execute("DELETE FROM word_group WHERE id = ?1", (&group.id,))
+        .execute("DELETE FROM word_groups WHERE id = ?1", (&group.id,))
         .map_err(|_| DbSaveError)?;
     Ok(())
 }

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/repetition_settings.rs

@@ -1,7 +1,7 @@
 use crate::app::AppState;
 use crate::data::entities::DeckSettings;
-use crate::data_provider::card_sets::{delete_set, update_deck};
+use crate::data_provider::card_states::{delete_stats, load_stats_of_deck};
-use crate::data_provider::card_stats::{delete_stats, load_stats_of_deck};
+use crate::data_provider::decks::{delete_set, update_deck};
 use crate::navigation::Page::PreviousPage;
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::notification::MaybeError;

src/pages/repetitions.rs

@@ -1,9 +1,9 @@
 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_sets::update_deck;
+use crate::data_provider::card_states::{add_stat_list, load_stats_of_deck};
-use crate::data_provider::card_stats::{add_stat_list, load_stats_of_deck};
+use crate::data_provider::decks::update_deck;
 use crate::navigation::Page::{History, PreviousPage, Repetition, RepetitionSettings};
 use crate::navigation::{NavigatedPage, Page, RootMessage};
 use crate::notification::{MaybeError, NotificationRequest};
@@ -585,12 +585,15 @@ 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(),
                     score: 1,
+                    fsrs_opened: Utc::now().date_naive(),
+                    fsrs_memory: None,
                     set_id: deck.id,
+                    fsrs_open_day: Utc::now().date_naive(),
                 }
             })
             .collect::<Vec<_>>();