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src/data_provider/card_sets.rs

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+use std::collections::HashMap;
+use iced::time::now;
+use rusqlite::Connection;
+use crate::lang::{CardSet, DictionaryElement};
+use crate::repetitions::CardSetSettings;
+
+pub fn load_sets(connection: &Connection) -> Vec<CardSetSettings> {
+    let mut stmt = connection.prepare("SELECT id, name, forward, backward, filter FROM card_set").unwrap();
+    let iter = stmt.query_map([], |row| {
+        Ok(CardSetSettings {
+            id: row.get(0)?,
+            name: row.get(1)?,
+            forward: row.get(2)?,
+            backward: row.get(3)?,
+            filter: row.get(4)?,
+            count: None
+        })
+    }).unwrap();
+
+    let mut buffer = vec![];
+    for word in iter {
+        buffer.push(word.unwrap());
+    }
+
+    buffer
+}
+
+pub fn add_set(set: &mut CardSetSettings, connection: &Connection) {
+    let index = connection
+        .query_row(
+            "INSERT INTO card_set (name, forward, backward, filter) VALUES (?1, ?2, ?3, ?4) RETURNING id",
+            (
+                &set.name,
+                &set.forward,
+                &set.backward,
+                &set.filter,
+            ),
+            |row| row.get(0)
+        )
+        .unwrap_or_else(|e| {println!("{}", e); 0});
+
+    set.id = index;
+}
+
+pub fn update_card_set(set: &mut CardSetSettings, connection: &Connection){
+    if set.id == 0 {
+        add_set(set, &connection);
+    }
+
+    else {
+        connection
+            .execute(
+                "UPDATE card_set SET name = ?1, forward = ?2, backward = ?3, filter = ?4 WHERE id = ?5",
+                (
+                    &set.name,
+                    &set.forward,
+                    &set.backward,
+                    &set.filter,
+                    &set.id
+                ),
+            )
+            .unwrap_or_else(|e| {println!("{}", e); 0});
+    }
+}
+
+pub fn delete_set(set: &CardSetSettings, connection: &Connection) {
+    if set.id == 0 {
+        return;
+    }
+    connection
+        .execute("DELETE FROM card_set WHERE id = ?1", (&set.id,))
+        .unwrap_or_else(|e| {
+            println!("{}", e);
+            0
+        });
+}