//! Copyright (c) 2022-2026 GitDataAi All rights reserved.

use crate::pb::archive_service_client::ArchiveServiceClient;
use crate::pb::*;

use super::{GitksService, cache, into_status};

remote_client!(
    remote_archive_client,
    ArchiveServiceClient<tonic::transport::Channel>,
    "archive"
);

#[tonic::async_trait]
impl archive_service_server::ArchiveService for GitksService {
    type GetArchiveStream =
        tokio_stream::wrappers::ReceiverStream<Result<ArchiveChunk, tonic::Status>>;

    async fn get_archive(
        &self,
        request: tonic::Request<ArchiveRequest>,
    ) -> Result<tonic::Response<Self::GetArchiveStream>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.ArchiveService/GetArchive");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let span = tracing::info_span!("archive.get_archive", %repo);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_archive_client(self, inner.repository.as_ref(), false).await?
                {
                    m.record("ok");
                    let resp = client.get_archive(inner).await?;
                    let stream = super::bridge_server_stream(resp.into_inner());
                    return Ok(tonic::Response::new(stream));
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let stream = gb.get_archive_stream(inner)?;
        tracing::info!(%repo, "archive streaming started");
        m.record("ok");
        Ok(tonic::Response::new(stream))
    }

    async fn list_archive_entries(
        &self,
        request: tonic::Request<ListArchiveEntriesRequest>,
    ) -> Result<tonic::Response<ListArchiveEntriesResponse>, tonic::Status> {
        let m = crate::metrics::RequestMetrics::new("gitks.ArchiveService/ListArchiveEntries");
        let inner = request.into_inner();
        let _rate = self.acquire_rate_limit(inner.repository.as_ref()).await?;
        let repo = self.repo_label(inner.repository.as_ref());
        let span = tracing::info_span!("archive.list_archive_entries", %repo);
        let _enter = span.enter();
        let gb = match self.resolve(inner.repository.as_ref()) {
            Ok(gb) => gb,
            Err(err) if err.code() == tonic::Code::NotFound => {
                if let Some(mut client) =
                    remote_archive_client(self, inner.repository.as_ref(), false).await?
                {
                    m.record("ok");
                    return client.list_archive_entries(inner).await;
                }
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
            Err(err) => {
                crate::metrics::record_rpc_error(&m, &err);
                return Err(err);
            }
        };
        let resp = if cache::selector_is_oid(&inner.treeish) {
            cache::cached_response("archive.list_archive_entries", &repo, &inner, || {
                gb.list_archive_entries(inner.clone()).map_err(into_status)
            })?
        } else {
            gb.list_archive_entries(inner).map_err(into_status)?
        };
        tracing::info!(%repo, count = resp.entries.len(), "list_archive_entries done");
        m.record("ok");
        Ok(tonic::Response::new(resp))
    }
}