package worldmanager

import (
	"context"
	"errors"
	"log"
	"math/rand"

	gamelangpb "git.alfi.li/gamelang/protobuf/gamelang"
)

type WorldServer struct {
	gamelangpb.UnimplementedWorldServiceServer

	worldmanager *WorldManager
}

func NewWorldServer(wm *WorldManager) *WorldServer {
	return &WorldServer{worldmanager: wm}
}

func (us WorldServer) CreateWorld(ctx context.Context, world *gamelangpb.World) (*gamelangpb.World, error) {
	id := rand.Uint32()
	world.Id = id
	_, err := us.worldmanager.Create(*world)
	if err != nil {
		return &gamelangpb.World{}, err
	}
	return world, nil
}

func (us WorldServer) DeleteWorld(ctx context.Context, world *gamelangpb.World) (*gamelangpb.World, error) {
	us.worldmanager.Remove(world.GetName())
	return world, nil
}

func (us WorldServer) GetWorld(ctx context.Context, searchworld *gamelangpb.World) (*gamelangpb.World, error) {
	log.Printf("new get request:\n%+v", searchworld)
	worlds := us.worldmanager.List()
	for _, world := range worlds {
		if world.GetName() == searchworld.GetName() {
			log.Println("sending world\n", world)
			return &world, nil
		}
	}
	return &gamelangpb.World{}, errors.New("World not found")
}

func (us WorldServer) ListWorld(world *gamelangpb.World, stream gamelangpb.WorldService_ListWorldServer) error {
	worlds := us.worldmanager.List()
	for _, world := range worlds {
		stream.Send(&world)
	}
	return nil
}

func (us WorldServer) JoinWorld(ctx context.Context, world *gamelangpb.World) (*gamelangpb.World, error) {
	log.Printf("new join request:\n%+v", world)
	user := world.Users[0]
	us.worldmanager.Join(world.Name, user)
	return world, nil
}

func (us WorldServer) AddGameWorld(ctx context.Context, world *gamelangpb.World) (*gamelangpb.World, error) {
	log.Printf("new Game add request:\n%+v", world)
	game := world.Games[0]
	us.worldmanager.AddGame(world.Name, game)
	return world, nil
}