package v1

import (
	"context"

	"git.badhouseplants.net/softplayer/softplayer-backend/internal/controllers"
	"git.badhouseplants.net/softplayer/softplayer-backend/internal/providers/infra"
	"git.badhouseplants.net/softplayer/softplayer-backend/internal/providers/kubernetes"
	proto "git.badhouseplants.net/softplayer/softplayer-go-proto/pkg/environments"
	"github.com/go-logr/logr"
	"github.com/golang/protobuf/ptypes/empty"
	ctrl "sigs.k8s.io/controller-runtime"
)

func NewapiGrpcImpl(controller ctrl.Manager, log logr.Logger) *EnvironmentsServer {
	return &EnvironmentsServer{
		controller:  controller,
		logInstance: log,
	}
}

type EnvironmentsServer struct {
	proto.UnimplementedEnvironmentsServer
	controller  ctrl.Manager
	logInstance logr.Logger
}

// Create an environment
func (e *EnvironmentsServer) Create(ctx context.Context, in *proto.CreateOptions) (*proto.EnvironmentFull, error) {
	log := e.logInstance
	log.WithValues("user_id", in.GetOwnerId().GetUuid())
	ctx = logr.NewContext(ctx, log)

	provider, err := infra.GetProvider(in.GetSpec().GetProvider().String())
	if err != nil {
		return nil, err
	}

	k8s, err := kubernetes.GetKubernetes(in.GetSpec().GetKubernetes().String())
	if err != nil {
		return nil, err
	}

	location, err := provider.GetServerLocation(in.GetSpec().GetServerLocation().String())
	if err != nil {
		return nil, err
	}

	serverType, err := provider.GetServerType(in.Spec.ServerType.String())
	if err != nil {
		return nil, err
	}

	data := &controllers.EnvironemntData{
		Name:        in.GetMetadata().GetName(),
		Description: in.GetMetadata().GetDescription(),
		Provider:    provider.GetProviderName(),
		Kubernetes:  k8s.GetKubernetesName(),
		Location:    location,
		ServerType:  serverType,
		DiskSize:    int(in.GetSpec().GetDiskSize()),
	}

	environment := &controllers.Environemnt{
		UserID:     in.GetOwnerId().GetUuid(),
		Config:     ctrl.GetConfigOrDie(),
		Controller: e.controller,
		Data:       data,
		Token:      in.GetToken().GetToken(),
	}

	err = environment.Create(ctx)
	if err != nil {
		return nil, err
	}
	return &proto.EnvironmentFull{
		Metadata: in.GetMetadata(),
		Id: &proto.EnvironmentId{
			Uuid: environment.Data.UUID,
		},
		Spec: in.GetSpec(),
	}, nil
}

func (e *EnvironmentsServer) Update(ctx context.Context, in *proto.UpdateOptions) (*proto.EnvironmentFull, error) {
	log := e.logInstance
	log.WithValues("user_id", in.GetOwnerId().GetUuid())
	ctx = logr.NewContext(ctx, log)

	provider, err := infra.GetProvider(in.GetSpec().GetProvider().String())
	if err != nil {
		return nil, err
	}

	k8s, err := kubernetes.GetKubernetes(in.GetSpec().GetKubernetes().String())
	if err != nil {
		return nil, err
	}

	location, err := provider.GetServerLocation(in.GetSpec().GetServerLocation().String())
	if err != nil {
		return nil, err
	}

	serverType, err := provider.GetServerType(in.Spec.ServerType.String())
	if err != nil {
		return nil, err
	}

	data := &controllers.EnvironemntData{
		Name:        in.GetMetadata().GetName(),
		UUID:        in.GetId().GetUuid(),
		Description: in.GetMetadata().GetDescription(),
		Provider:    provider.GetProviderName(),
		Kubernetes:  k8s.GetKubernetesName(),
		Location:    location,
		ServerType:  serverType,
		DiskSize:    int(in.GetSpec().GetDiskSize()),
	}

	environment := &controllers.Environemnt{
		Config:     ctrl.GetConfigOrDie(),
		UserID:     in.GetOwnerId().GetUuid(),
		Controller: e.controller,
		Data:       data,
		Token:      in.GetToken().GetToken(),
	}

	err = environment.Update(ctx)
	if err != nil {
		return nil, err
	}

	return &proto.EnvironmentFull{
		Metadata: in.GetMetadata(),
		Id:       in.GetId(),
		Spec:     in.GetSpec(),
	}, nil

}

func (e *EnvironmentsServer) Delete(ctx context.Context, in *proto.DeleteOptions) (*empty.Empty, error) {
	log := e.logInstance
	log.WithValues("user_id", in.GetOwnerId().GetUuid())
	ctx = logr.NewContext(ctx, log)

	data := &controllers.EnvironemntData{
		Name: in.GetMetadata().GetName(),
		UUID: in.GetId().GetUuid(),
	}

	environment := &controllers.Environemnt{
		Config:     ctrl.GetConfigOrDie(),
		UserID:     in.GetOwnerId().GetUuid(),
		Controller: e.controller,
		Data:       data,
		Token:      in.GetToken().GetToken(),
	}
	err := environment.Delete(ctx)
	if err != nil {
		return nil, err
	}
	return nil, nil
}

func (e *EnvironmentsServer) Get(ctx context.Context, in *proto.GetOptions) (*proto.EnvironmentFull, error) {
	log := e.logInstance
	log.WithValues("user_id", in.GetOwnerId().GetUuid())
	ctx = logr.NewContext(ctx, log)

	data := &controllers.EnvironemntData{
		UUID: in.GetId().GetUuid(),
	}

	environment := &controllers.Environemnt{
		Config:     ctrl.GetConfigOrDie(),
		UserID:     in.GetOwnerId().GetUuid(),
		Controller: e.controller,
		Data:       data,
		Token:      in.GetToken().GetToken(),
	}

	if err := environment.Get(ctx); err != nil {
		return nil, err
	}

	provider, err := infra.GetProvider(environment.Data.Provider)
	if err != nil {
		return nil, err
	}

	k8s, err := kubernetes.GetKubernetes(environment.Data.Kubernetes)
	if err != nil {
		return nil, err
	}

	return &proto.EnvironmentFull{
		Spec: &proto.EnvironmentSpec{
			Provider:       proto.Provider(proto.Provider_value[provider.RawProviderName()]),
			Kubernetes:     proto.Kubernetes(proto.Kubernetes_value[k8s.RawKubernetesName()]),
			ServerLocation: proto.Location(proto.Location_value[provider.RawServerLocation(environment.Data.Location)]),
			ServerType:     proto.ServerType(proto.ServerType_value[provider.RawServerType(environment.Data.ServerType)]),
			DiskSize:       int32(environment.Data.DiskSize),
		},
		Id: in.GetId(),
		Metadata: &proto.EnvironmentMetadata{
			Name:        environment.Data.Name,
			Description: environment.Data.Description,
		},
	}, nil
}

func (e *EnvironmentsServer) List(in *proto.ListOptions, stream proto.Environments_ListServer) error {
	logInstance := e.logInstance
	log := logInstance.WithValues("user_id", in.GetOwnerId().GetUuid())
	ctx := logr.NewContext(stream.Context(), log)

	environment := &controllers.Environemnt{
		Config:     ctrl.GetConfigOrDie(),
		UserID:     in.GetOwnerId().GetUuid(),
		Controller: e.controller,
		Token:      in.GetToken().GetToken(),
	}

	envs, err := environment.List(ctx, in.GetSearchString())
	if err != nil {
		return err
	}

	for _, env := range envs {
		provider, err := infra.GetProvider(env.Data.Provider)
		if err != nil {
			return err
		}

		k8s, err := kubernetes.GetKubernetes(env.Data.Kubernetes)
		if err != nil {
			return err
		}

		if err := stream.Send(&proto.EnvironmentFull{
			Metadata: &proto.EnvironmentMetadata{
				Name:        env.Data.Name,
				Description: env.Data.Description,
			},
			Id: &proto.EnvironmentId{
				Uuid: env.Data.UUID,
			},
			Spec: &proto.EnvironmentSpec{
				Provider:       proto.Provider(proto.Provider_value[provider.RawProviderName()]),
				Kubernetes:     proto.Kubernetes(proto.Kubernetes_value[k8s.RawKubernetesName()]),
				ServerLocation: proto.Location(proto.Location_value[provider.RawServerLocation(env.Data.Location)]),
				ServerType:     proto.ServerType(proto.ServerType_value[provider.RawServerType(env.Data.ServerType)]),
				DiskSize:       int32(env.Data.DiskSize),
			},
		}); err != nil {
			return err
		}
	}
	return nil
}