package grpcserver

import (
	"context"

	"git.coopgo.io/coopgo-platform/carpool-service/servers/grpc/proto"
	"github.com/paulmach/orb/geojson"
	"github.com/rs/zerolog/log"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

func (s *CarpoolServiceServerImpl) CreateRegularRoutes(ctx context.Context, req *proto.CreateRegularRoutesRequest) (*proto.CreateRegularRoutesResponse, error) {
	log.Debug().Msg("grpc CarpoolService - CreateTrips")
	routes := []*geojson.FeatureCollection{}

	for _, r := range req.Routes {
		route, err := geojson.UnmarshalFeatureCollection([]byte(r.Serialized))
		if err == nil {
			routes = append(routes, route)
		}
	}

	if len(routes) == 0 {
		return nil, status.Errorf(codes.InvalidArgument, "no route to create")
	}

	if err := s.Handler.CreateRegularRoutes(routes); err != nil {
		return nil, status.Errorf(codes.Internal, "could not create routes in CreateRegularRoutes : %s", err.Error())
	}

	return &proto.CreateRegularRoutesResponse{}, nil
}

func (s *CarpoolServiceServerImpl) DeleteRegularRoutes(context.Context, *proto.DeleteRegularRoutesRequest) (*proto.DeleteRegularRoutesResponse, error) {
	return nil, status.Errorf(codes.Unimplemented, "method DeleteTrips not implemented")
}

func (s *CarpoolServiceServerImpl) GetUserPlanning(ctx context.Context, req *proto.GetUserPlanningRequest) (*proto.GetUserPlanningResponse, error) {
	log.Debug().Msg("grpc CarpoolService - GetRegularUserRoutes")

	planned_schedules, err := s.Handler.GetUserPlanning(req.UserId, req.MinDepartureDate.AsTime(), req.MaxDepartureDate.AsTime())
	if err != nil {
		return nil, status.Errorf(codes.Internal, "could not get user planning : %s", err.Error())
	}

	results := map[string]*proto.CarpoolRoutesCollection{}

	for k, scheds := range planned_schedules {

		results[k] = &proto.CarpoolRoutesCollection{
			Collection: []*proto.CarpoolFeatureCollection{},
		}

		for _, s := range scheds {
			s.Route.ExtraMembers["departure_date"] = s.DepartureDate
			s.Route.ExtraMembers["id"] = s.ID
			fcraw, _ := s.Route.MarshalJSON()
			results[k].Collection = append(results[k].Collection, &proto.CarpoolFeatureCollection{
				Serialized: string(fcraw),
			})
		}
	}

	return &proto.GetUserPlanningResponse{
		RoutesByDates: results,
	}, nil
}

func (s *CarpoolServiceServerImpl) GetPlannedTrip(ctx context.Context, req *proto.GetPlannedTripRequest) (*proto.GetPlannedTripResponse, error) {
	planned_trip, err := s.Handler.GetPlannedTrip(req.Id)
	if err != nil {
		return nil, status.Errorf(codes.Internal, "could not retrieve planned trip - %s", err.Error())
	}

	planned_trip.Route.ExtraMembers["id"] = planned_trip.ID
	planned_trip.Route.ExtraMembers["departure_date"] = planned_trip.DepartureDate

	serialized, err := planned_trip.Route.MarshalJSON()
	if err != nil {
		log.Error().Err(err).Msg("grpc GetPlannedTrip - could not serialize feature collection")
		return nil, status.Errorf(codes.Internal, "could not serialize feature collection")
	}

	return &proto.GetPlannedTripResponse{
		PlannedTrip: &proto.CarpoolFeatureCollection{
			Serialized: string(serialized),
		},
	}, nil
}