// Copyright (C) 2024-2026 Whiterun LLC
//
// This software is licensed under the GNU Affero General Public License (AGPL), version 3.0 or later.
// A copy of the license can be found in the LICENSE file or at https://www.gnu.org/licenses/agpl-3.0.html

#[allow(clippy::items_after_test_module)]
#[cfg(test)]
mod test_utils {
    use crate::db::DB;
    use sqlx::sqlite::SqliteConnectOptions;
    use sqlx::SqlitePool;
    use std::sync::atomic::{AtomicU64, Ordering};

    static DB_COUNTER: AtomicU64 = AtomicU64::new(0);

    /// Create an in-memory SqlitePool-based DB for tests.
    /// The setup function receives a `SqlitePool` to create tables and seed data.
    /// Foreign keys are disabled to match the old rusqlite test behavior.
    /// Each call gets a unique shared-cache in-memory database so multiple pool
    /// connections share the same data without interfering with other tests.
    pub async fn mock_db_pool<F, Fut>(setup_fn: F) -> DB
    where
        F: FnOnce(SqlitePool) -> Fut,
        Fut: std::future::Future<Output = ()>,
    {
        let id = DB_COUNTER.fetch_add(1, Ordering::SeqCst);
        let uri = format!("file:testdb_{}?mode=memory&cache=shared", id);
        let opts = SqliteConnectOptions::new()
            .filename(&uri)
            .foreign_keys(false);
        let pool = SqlitePool::connect_with(opts).await.unwrap();

        setup_fn(pool.clone()).await;

        DB {
            cauldron_w: pool.clone(),
            cauldron_r: pool.clone(),
            bcmr_w: pool.clone(),
            bcmr_r: pool.clone(),
            crc20_w: pool.clone(),
            crc20_r: pool.clone(),
            oracle_w: pool.clone(),
            oracle_r: pool.clone(),
        }
    }
}

#[cfg(test)]
pub use test_utils::mock_db_pool;