package grpc_sentry

import (
	"context"

	"github.com/getsentry/sentry-go"
	grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
	"google.golang.org/grpc"
)

// TODO(chenfei): There is PR do the same work, see: https://github.com/getsentry/sentry-go/pull/312

// UnaryServerInterceptor returns a new unary server interceptors that sends errors to Sentry
func UnaryServerInterceptor() grpc.UnaryServerInterceptor {
	return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
		hub := sentry.GetHubFromContext(ctx)
		if hub == nil {
			hub = sentry.CurrentHub().Clone()
			ctx = sentry.SetHubOnContext(ctx, hub)
		}

		resp, err := handler(ctx, req)
		return resp, err
	}
}

// StreamServerInterceptor returns a new streaming server interceptor that that sends errors to Sentry
func StreamServerInterceptor() grpc.StreamServerInterceptor {
	return func(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
		wrapped := grpc_middleware.WrapServerStream(stream)
		hub := sentry.GetHubFromContext(wrapped.WrappedContext)
		if hub == nil {
			hub = sentry.CurrentHub().Clone()
			wrapped.WrappedContext = sentry.SetHubOnContext(wrapped.WrappedContext, hub)
		}

		err := handler(srv, wrapped)
		return err
	}
}