Faster new set initializing

src/lang.rs

@@ -1,6 +1,5 @@
-use crate::data_provider::card_stats::{
-    add_stat, delete_stat, load_stats_of_set, update_stat_score,
-};
+use crate::data_provider::card_stats::{add_stat_list, delete_stat, load_stats_of_set, update_stat_score};
+use crate::data_provider::history::{push_note, HistoryItem};
 use crate::repetitions::CardSetSettings;
 use crate::AppState;
 use chrono::{DateTime, Utc};
@@ -13,7 +12,7 @@ use serde::{Deserialize, Serialize};
 use std::cmp::min;
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
-use crate::data_provider::history::{push_note, HistoryItem};
+use std::time::Instant;
 
 const MAX_HISTORY_LEN: usize = 20;
 const MAX_HISTORY_LEN_PART: f32 = 0.33;
@@ -329,7 +328,7 @@ impl CardSet {
         let saved_ids = current_set.iter().map(|l| l.word_id).collect::<Vec<u32>>();
         let word_ids = last_list.iter().map(|l| l.id).collect::<Vec<u32>>();
 
-        last_list
+        let new_stats: &mut Vec<CardStatistics> = &mut last_list
             .iter()
             .filter(|word| !saved_ids.contains(&word.id))
             .map(|word| CardStatistics {
@@ -338,12 +337,16 @@ impl CardSet {
                 last_open: Utc::now(),
                 score: 1,
                 set_id: settings.id.clone(),
-            })
-            .for_each(|mut new_statistic| {
-                add_stat(&mut new_statistic, &state_locked.connection);
-                current_set.push(new_statistic);
-            });
+            }).collect();
 
+        let time = Instant::now();
+
+        if !new_stats.is_empty() {
+            add_stat_list(new_stats, &state_locked.connection);
+            current_set.append(new_stats);
+        }
+
+        println!("Added {} stats: {}", new_stats.len(), time.elapsed().as_millis());
         let mut index = 0;
         for stat in current_set.clone() {
             if !word_ids.contains(&stat.word_id) {