use crate::pb::*;

use super::{GitksService, into_status};

#[tonic::async_trait]
impl merge_service_server::MergeService for GitksService {
    async fn check_merge(
        &self,
        request: tonic::Request<CheckMergeRequest>,
    ) -> Result<tonic::Response<MergeResult>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let span = tracing::info_span!("merge.check_merge", %repo);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.check_merge(inner).map_err(into_status)?;
        tracing::info!(%repo, status = resp.status, "check_merge done");
        Ok(tonic::Response::new(resp))
    }

    async fn merge(
        &self,
        request: tonic::Request<MergeRequest>,
    ) -> Result<tonic::Response<MergeResult>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let target = inner.target_branch.clone();
        let span = tracing::info_span!("merge.merge", %repo, %target);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.merge(inner).map_err(into_status)?;
        tracing::info!(%repo, %target, status = resp.status, "merge done");
        Ok(tonic::Response::new(resp))
    }

    async fn list_merge_conflicts(
        &self,
        request: tonic::Request<ListMergeConflictsRequest>,
    ) -> Result<tonic::Response<ListMergeConflictsResponse>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let span = tracing::info_span!("merge.list_merge_conflicts", %repo);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.list_merge_conflicts(inner).map_err(into_status)?;
        tracing::info!(%repo, conflicts = resp.conflicts.len(), "list_merge_conflicts done");
        Ok(tonic::Response::new(resp))
    }

    async fn resolve_merge_conflicts(
        &self,
        request: tonic::Request<ResolveMergeConflictsRequest>,
    ) -> Result<tonic::Response<MergeResult>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let target = inner.target_branch.clone();
        let span = tracing::info_span!("merge.resolve_merge_conflicts", %repo, %target);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.resolve_merge_conflicts(inner).map_err(into_status)?;
        tracing::info!(%repo, %target, status = resp.status, "merge conflicts resolved");
        Ok(tonic::Response::new(resp))
    }

    async fn rebase(
        &self,
        request: tonic::Request<RebaseRequest>,
    ) -> Result<tonic::Response<RebaseResult>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let branch = inner.branch.clone();
        let span = tracing::info_span!("merge.rebase", %repo, %branch);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.rebase(inner).map_err(into_status)?;
        tracing::info!(%repo, %branch, status = resp.status, "rebase done");
        Ok(tonic::Response::new(resp))
    }
}