use crate::pb::*;

use super::{GitksService, into_status};

#[tonic::async_trait]
impl branch_service_server::BranchService for GitksService {
    async fn list_branches(
        &self,
        request: tonic::Request<ListBranchesRequest>,
    ) -> Result<tonic::Response<ListBranchesResponse>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let span = tracing::info_span!("branch.list_branches", %repo);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.list_branches(inner).map_err(into_status)?;
        tracing::info!(%repo, count = resp.branches.len(), "list_branches done");
        Ok(tonic::Response::new(resp))
    }

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

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

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

    async fn rename_branch(
        &self,
        request: tonic::Request<RenameBranchRequest>,
    ) -> Result<tonic::Response<Branch>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let old = inner.old_name.clone();
        let new = inner.new_name.clone();
        let span = tracing::info_span!("branch.rename_branch", %repo, %old, %new);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.rename_branch(inner).map_err(into_status)?;
        tracing::info!(%repo, old = %old, new = %new, "branch renamed");
        Ok(tonic::Response::new(resp))
    }

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

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

    async fn compare_branch(
        &self,
        request: tonic::Request<CompareBranchRequest>,
    ) -> Result<tonic::Response<CompareBranchResponse>, tonic::Status> {
        let inner = request.into_inner();
        let repo = self.repo_label(inner.repository.as_ref());
        let source = inner.source_branch.clone();
        let target = inner.target_branch.clone();
        let span = tracing::info_span!("branch.compare_branch", %repo, %source, %target);
        let _enter = span.enter();
        let gb = self.resolve(inner.repository.as_ref())?;
        let resp = gb.compare_branch(inner).map_err(into_status)?;
        tracing::info!(%repo, %source, %target, ahead = resp.ahead_by, behind = resp.behind_by, "branch compared");
        Ok(tonic::Response::new(resp))
    }
}