Add sqlite database

src/database.rs

@@ -0,0 +1,49 @@
+use anyhow::Result;
+use sqlx::{Row, SqlitePool};
+
+pub struct Database {
+    pool: SqlitePool,
+}
+
+impl Database {
+    pub async fn new() -> Result<Self> {
+        let pool = SqlitePool::connect("sqlite:ratings.db").await?;
+        Ok(Database { pool })
+    }
+
+    pub async fn add_user(&self, name: &str, number: i64) -> Result<i64> {
+        let mut conn = self.pool.acquire().await?;
+
+        let id = sqlx::query(
+            r#"
+            INSERT INTO users (id, name)
+            VALUES (?1, ?2)
+        "#,
+        )
+        .bind(name)
+        .bind(number)
+        .execute(&mut *conn)
+        .await?
+        .last_insert_rowid();
+
+        Ok(id)
+    }
+
+    pub async fn user_exists(&self, number: i64) -> Result<i64> {
+        let mut conn = self.pool.acquire().await?;
+
+        let record = sqlx::query(
+            r#"
+            SELECT id FROM users
+            WHERE id = ?
+        "#,
+        )
+        .bind(number)
+        .fetch_one(&mut *conn)
+        .await?;
+
+        let id = record.try_get("id")?;
+
+        Ok(id)
+    }
+}

src/main.rs

@@ -1,7 +1,11 @@
+mod database;
 mod player;
 mod userinterface;
 
-fn main() {
+use tokio;
+
+#[tokio::main]
+async fn main() {
     let player = player::MprisPlayer::new().expect("Could not create player");
 
     let (usernumber, userrating) = userinterface::get_user_rating().expect("Lala");