package user

import (
	"context"

	"github.com/google/uuid"

	"nexavpn/backend/internal/auth"
)

type Service struct {
	repo Repository
}

func NewService(repo Repository) *Service {
	return &Service{repo: repo}
}

func (s *Service) List(ctx context.Context) ([]User, error) {
	return s.repo.List(ctx)
}

func (s *Service) Create(ctx context.Context, input CreateRequest) (User, error) {
	passwordHash, err := auth.HashPassword(input.Password)
	if err != nil {
		return User{}, err
	}
	return s.repo.Create(ctx, input, passwordHash)
}

func (s *Service) Update(ctx context.Context, userID string, input UpdateRequest) (User, error) {
	id, err := uuid.Parse(userID)
	if err != nil {
		return User{}, err
	}

	var passwordHash *string
	if input.Password != nil && *input.Password != "" {
		hashed, err := auth.HashPassword(*input.Password)
		if err != nil {
			return User{}, err
		}
		passwordHash = &hashed
	}

	return s.repo.Update(ctx, id, input, passwordHash)
}

func (s *Service) Delete(ctx context.Context, userID string) error {
	id, err := uuid.Parse(userID)
	if err != nil {
		return err
	}
	return s.repo.Delete(ctx, id)
}

func (s *Service) SetActive(ctx context.Context, userID string, active bool) error {
	id, err := uuid.Parse(userID)
	if err != nil {
		return err
	}
	return s.repo.SetActive(ctx, id, active)
}
