package applicationservice

import (
	"bitbucket.org/nemt/nemt-portal-api/application/entitymapping"
	"bitbucket.org/nemt/nemt-portal-api/application/viewmodel"
	"bitbucket.org/nemt/nemt-portal-api/domain/entity"
	"bitbucket.org/nemt/nemt-portal-api/domain/service"
	"bitbucket.org/nemt/nemt-portal-api/infra/errors"
)

// userService holds methods to user application service
type userService struct {
	svc       *service.Service
	mapEntity *entitymapping.Mapper
}

// newUserService returns a userService instance
func newUserService(svc *service.Service, mapper *entitymapping.Mapper) *userService {
	return &userService{
		svc:       svc,
		mapEntity: mapper,
	}
}

// GetAll returns a list of users
func (s *userService) GetAll(quantity int64, page int64) (retVal []viewmodel.User, err error) {
	users, err := s.svc.Users.GetAll()
	if err != nil {
		return retVal, errors.Wrap(err)
	}
	return s.mapEntity.User.ToUserModelSlice(users), nil
}

// GetByID returns a specific user by its ID
func (s *userService) GetByID(id int64) (retVal viewmodel.User, err error) {
	user, err := s.svc.Users.GetByID(id)
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	return s.mapEntity.User.ToUserModel(user), nil
}

// GetByID returns a specific user by its ID
func (s *userService) GetByUUID(uuid string, profile string) (retVal viewmodel.User, err error) {
	user, err := s.svc.Users.GetByUUID(uuid, profile)
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	return s.mapEntity.User.ToUserModel(user), nil
}

// Login returns a specific user by email and pass
func (s *userService) FullLogin(loginType string, key string, pass string, profile string) (retVal viewmodel.User, err error) {
	user, err := s.svc.Users.FullLogin(loginType, key, pass, profile)
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	return s.mapEntity.User.ToUserModel(user), nil
}

// Login returns a specific user by email and pass
func (s *userService) Login(email string, pass string) (retVal viewmodel.User, err error) {
	user, err := s.svc.Users.Login(email, pass)
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	return s.mapEntity.User.ToUserModel(user), nil
}

func (s *userService) Create(user viewmodel.User, author viewmodel.User) (retVal viewmodel.User, err error) {
	entity := s.mapEntity.User.ToUserEntity(user)
	enAuthor := s.mapEntity.User.ToUserEntity(author)

	for i, _ := range entity.Organizations {
		entity.Organizations[i], err = s.svc.Organization.GetByUUID(entity.Organizations[i].UUID, enAuthor)
		if err != nil {
			return retVal, err
		}
	}

	entity, err = s.svc.Users.Create(entity)
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	return s.mapEntity.User.ToUserModel(entity), nil
}

func (s *userService) CreateBulk(users []viewmodel.User, author viewmodel.User) (retVal []viewmodel.User, err error) {
	entities := s.mapEntity.User.ToUserEntitySlice(users)
	enAuthor := s.mapEntity.User.ToUserEntity(author)
	organizations := make([]entity.Organization, 0)
	for i, _ := range entities {
		if i == 0 {
			for o, _ := range entities[i].Organizations {
				org, err := s.svc.Organization.GetByUUID(entities[i].Organizations[o].UUID, enAuthor)
				if err != nil {
					return nil, err
				}
				organizations = append(organizations, org)
			}
		}
		entities[i].Organizations = organizations
	}

	entities, err = s.svc.Users.CreateBulk(entities)
	if err != nil {
		return nil, errors.Wrap(err)
	}

	return s.mapEntity.User.ToUserModelSlice(entities), nil
}

// GetUsersByProfile returns a list of users by profile
func (s *userService) GetUsersByProfile(profile string) (retVal []viewmodel.User, err error) {
	users, err := s.svc.Users.GetUsersByProfile(profile)
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	list := s.mapEntity.User.ToUserModelSlice(users)

	return list, nil
}

func (s *userService) RemoveAddress(addressUUID string) error {
	return s.svc.Users.RemoveAddress(addressUUID)
}

func (s *userService) SaveAddress(address viewmodel.Address) (retVal viewmodel.Address, err error) {
	entity := s.mapEntity.Address.ToAddressEntity(address)
	entity, err = s.svc.Users.SaveAddress(entity)
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	return s.mapEntity.Address.ToAddressModel(entity), err
}

func (s *userService) GetContactType() (retVal []viewmodel.ContactType, err error) {
	entity, err := s.svc.Users.GetContactType()
	if err != nil {
		return retVal, errors.Wrap(err)
	}

	return s.mapEntity.User.ToContactTypeModelSlice(entity), nil
}