Make db creation better

src/data_provider/words.rs

@@ -1,95 +1,7 @@
-use crate::dictionary::app_data_dir;
 use crate::lang::{WordData, WordGroup};
 use rusqlite::Connection;
 use std::collections::HashMap;
 
-pub fn create_db() {
-    let path = app_data_dir();
-    let db_file = path.join("data.db");
-    if !db_file.exists() {
-        std::fs::File::create(&db_file).unwrap();
-        let connection = Connection::open(&db_file).unwrap();
-        connection.execute("PRAGMA foreign_keys = ON;", []).unwrap();
-
-        create_tables(&connection);
-    }
-}
-
-fn create_tables(conn: &Connection) {
-    conn.execute(
-        "create table settings
-(
-    id text primary key,
-    value text
-);",
-        (),
-    )
-        .unwrap_or_else(|e| 0);
-
-    conn.execute(
-        "create table card_set
-(
-    id       INTEGER
-        primary key autoincrement,
-    name     TEXT not null,
-    forward  TEXT not null,
-    backward TEXT not null,
-    filter   TEXT not null
-);",
-        (),
-    )
-        .unwrap_or_else(|e| 0);
-    conn.execute(
-        "create table word_group
-(
-    id   INTEGER
-        primary key autoincrement,
-    name TEXT not null
-);",
-        (),
-    )
-        .unwrap_or_else(|e| 0);
-    conn.execute(
-        "create table words
-(
-    id       INTEGER
-        primary key autoincrement,
-    key      TEXT              not null,
-    value    TEXT              not null,
-    tags     TEXT              not null,
-    more     TEXT,
-    group_id integer default 1 not null
-        constraint words_word_group_id_fk
-            references word_group
-            on update cascade on delete cascade
-);",
-        (),
-    )
-        .unwrap_or_else(|e| 0);
-    conn.execute(
-        "create table card_stats
-(
-    id          INTEGER
-        primary key autoincrement,
-    word_id     INTEGER           not null
-        references words
-            on delete cascade,
-    set_id      TEXT              not null
-        references card_set
-            on delete cascade,
-    score       INTEGER default 1 not null,
-    last_opened integer           not null
-);",
-        (),
-    )
-        .unwrap_or_else(|e| 0);
-    conn.execute(
-        "insert into word_group (name)
-values (\"Слова\");",
-        (),
-    )
-        .unwrap_or_else(|e| 0);
-}
 
 pub fn add_word(word: &mut WordData, connection: &Connection) {
     let index = connection