package grpcserver

import (
	"context"
	grpcproto "git.coopgo.io/coopgo-apps/silvermobi/servers/grpcapi/proto"
	"github.com/google/uuid"
	"github.com/paulmach/orb/geojson"
	"github.com/rs/zerolog/log"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
	"io"
)

func (s SilvermobiGRPCService) GeoAutocomplete(ctx context.Context, in *grpcproto.GeoAutocompleteRequest) (resp *grpcproto.GeoAutocompleteResponse, err error) {
	log.Info().
		Str("text", in.Text).
		Msg("GeoAutocompleteRequest")
	requestid := uuid.NewString()
	log.Debug().Str("requestid", requestid).Msg("GRPC GeoAutocomplete start")

	if err == io.EOF {
		log.Debug().Str("requestid", requestid).Msg("GRPC GeoAutocomplete EOF")
		return nil, err
	}

	if err != nil {
		log.Error().Str("requestid", requestid).Err(err).Msg("GRPC GeoAutocomplete other error")
		return nil, err
	}

	results, err := s.Handler.GeoAutocomplete(in.Text, in.Lat, in.Lon)
	if err != nil {
		log.Error().Str("requestid", requestid).Err(err).Msg("GRPC GeoAutocomplete geocoding error")
		return nil, err
	}

	rawfc, err := results.MarshalJSON()
	if err != nil {
		log.Error().Str("requestid", requestid).Err(err).Msg("GRPC GeoAutocomplete protocol buffer conversion error")
		return nil, err
	}

	resp = &grpcproto.GeoAutocompleteResponse{
		FeatureCollection: &grpcproto.GeoAutocompleteResponse_FeatureCollectionRaw{
			FeatureCollectionRaw: string(rawfc),
		},
	}

	return resp, nil

}

func (s SilvermobiGRPCService) GeoRoute(ctx context.Context, req *grpcproto.GeoRouteRequest) (*grpcproto.GeoRouteResponse, error) {
	locations_raw, ok := req.Locations.(*grpcproto.GeoRouteRequest_LocationsRaw)
	if !ok {
		return nil, status.Errorf(codes.InvalidArgument, "could not read departure")
	}

	locations, err := geojson.UnmarshalFeatureCollection([]byte(locations_raw.LocationsRaw))
	if err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	route, err := s.Handler.GeoRoute(*locations)
	if err != nil {
		return nil, err
	}

	return &grpcproto.GeoRouteResponse{
		Polyline: route.Polyline.String(),
	}, nil
}

func (s SilvermobiGRPCService) GeoRouteWithReturn(ctx context.Context, req *grpcproto.GeoRouteWithReturnRequest) (*grpcproto.GeoRouteWithReturnResponse, error) {
	locations_raw, ok := req.Locations.(*grpcproto.GeoRouteWithReturnRequest_LocationsRaw)
	if !ok {
		return nil, status.Errorf(codes.InvalidArgument, "could not read departure")
	}

	locations, err := geojson.UnmarshalFeatureCollection([]byte(locations_raw.LocationsRaw))
	if err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	route, err := s.Handler.GeoRoute(*locations)
	if err != nil {
		return nil, err
	}

	return_route, err := s.Handler.GeoReturnRoute(*locations)
	if err != nil {
		return nil, err
	}

	return &grpcproto.GeoRouteWithReturnResponse{
		Polyline:       route.Polyline.String(),
		ReturnPolyline: return_route.Polyline.String(),
	}, nil
}