use tokio::fs;
use turso::{Builder, Value};

#[tokio::test]
async fn test_rows_next() {
    let builder = Builder::new_local(":memory:");
    let db = builder.build().await.unwrap();
    let conn = db.connect().unwrap();
    conn.execute("CREATE TABLE test (x INTEGER)", ())
        .await
        .unwrap();
    conn.execute("INSERT INTO test (x) VALUES (1)", ())
        .await
        .unwrap();
    conn.execute("INSERT INTO test (x) VALUES (2)", ())
        .await
        .unwrap();
    conn.execute(
        "INSERT INTO test (x) VALUES (:x)",
        vec![(":x".to_string(), Value::Integer(3))],
    )
    .await
    .unwrap();
    conn.execute(
        "INSERT INTO test (x) VALUES (@x)",
        vec![("@x".to_string(), Value::Integer(4))],
    )
    .await
    .unwrap();
    conn.execute(
        "INSERT INTO test (x) VALUES ($x)",
        vec![("$x".to_string(), Value::Integer(5))],
    )
    .await
    .unwrap();
    let mut res = conn.query("SELECT * FROM test", ()).await.unwrap();
    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        1.into()
    );
    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        2.into()
    );
    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        3.into()
    );
    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        4.into()
    );
    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        5.into()
    );
    assert!(res.next().await.unwrap().is_none());
}

#[tokio::test]
async fn test_cacheflush() {
    let builder = Builder::new_local("test.db");
    let db = builder.build().await.unwrap();

    let conn = db.connect().unwrap();

    conn.execute("CREATE TABLE IF NOT EXISTS asdf (x INTEGER)", ())
        .await
        .unwrap();

    // Tests if cache flush breaks transaction isolation
    conn.execute("BEGIN", ()).await.unwrap();
    conn.execute("INSERT INTO asdf (x) VALUES (1)", ())
        .await
        .unwrap();
    conn.cacheflush().unwrap();
    conn.execute("ROLLBACK", ()).await.unwrap();

    conn.execute("INSERT INTO asdf (x) VALUES (2)", ())
        .await
        .unwrap();
    conn.execute("INSERT INTO asdf (x) VALUES (3)", ())
        .await
        .unwrap();

    let mut res = conn.query("SELECT * FROM asdf", ()).await.unwrap();

    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        2.into()
    );
    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        3.into()
    );

    // Tests if cache flush doesn't break a committed transaction
    conn.execute("BEGIN", ()).await.unwrap();
    conn.execute("INSERT INTO asdf (x) VALUES (1)", ())
        .await
        .unwrap();
    conn.cacheflush().unwrap();
    conn.execute("COMMIT", ()).await.unwrap();

    let mut res = conn
        .query("SELECT * FROM asdf WHERE x = 1", ())
        .await
        .unwrap();

    assert_eq!(
        res.next().await.unwrap().unwrap().get_value(0).unwrap(),
        1.into()
    );

    fs::remove_file("test.db").await.unwrap();
    fs::remove_file("test.db-wal").await.unwrap();
}