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use crate::types::heap::ArgBuffer;

use super::HandleTypeInfo;

pub trait LogApi: HandleTypeInfo {
    type LogApiImpl: LogApiImpl
        + HandleTypeInfo<
            ManagedBufferHandle = Self::ManagedBufferHandle,
            BigIntHandle = Self::BigIntHandle,
            BigFloatHandle = Self::BigFloatHandle,
            EllipticCurveHandle = Self::EllipticCurveHandle,
        >;

    fn log_api_impl() -> Self::LogApiImpl;
}

/// Interface to only be used by code generated by the macros.
/// The smart contract code doesn't have access to these methods directly.
pub trait LogApiImpl: HandleTypeInfo {
    /// Saves an event log.
    fn write_event_log(&self, topics_buffer: &ArgBuffer, data: &[u8]);

    /// The legacy Arwen hook for saving event logs. It does the same, but only accepts 32-byte topics.
    /// Only kept for backwards compatibility.
    fn write_legacy_log(&self, topics: &[[u8; 32]], data: &[u8]);

    fn managed_write_log(
        &self,
        topics_handle: Self::ManagedBufferHandle,
        data_handle: Self::ManagedBufferHandle,
    );
}