use crate::{
    database::{
        database_description::relayer::Relayer,
        Database,
    },
    service::adapters::TransactionsSource,
};
use fuel_core_executor::ports::MaybeCheckedTransaction;
use fuel_core_types::{
    blockchain::primitives::DaBlockHeight,
    services::relayer::Event,
};

impl fuel_core_executor::ports::TransactionsSource for TransactionsSource {
    fn next(&self, gas_limit: u64) -> Vec<MaybeCheckedTransaction> {
        self.txpool
            .select_transactions(gas_limit)
            .into_iter()
            .map(|tx| MaybeCheckedTransaction::CheckedTransaction(tx.as_ref().into()))
            .collect()
    }
}

impl fuel_core_executor::ports::RelayerPort for Database<Relayer> {
    fn enabled(&self) -> bool {
        #[cfg(feature = "relayer")]
        {
            true
        }
        #[cfg(not(feature = "relayer"))]
        {
            false
        }
    }

    fn get_events(&self, da_height: &DaBlockHeight) -> anyhow::Result<Vec<Event>> {
        #[cfg(feature = "relayer")]
        {
            use fuel_core_storage::StorageAsRef;
            let events = self
                .storage::<fuel_core_relayer::storage::EventsHistory>()
                .get(da_height)?
                .map(|cow| cow.into_owned())
                .unwrap_or_default();
            Ok(events)
        }
        #[cfg(not(feature = "relayer"))]
        {
            let _ = da_height;
            Ok(vec![])
        }
    }
}