package client

import (
	"context"
	"errors"
	"regexp"
	"strings"

	"queryorchestration/internal/database/repository"

	"github.com/google/uuid"
)

type CreateParams struct {
	Name       string
	ExternalId string
}

func (s *Service) Create(ctx context.Context, params CreateParams) (uuid.UUID, error) {
	err := s.normalizeCreate(&params)
	if err != nil {
		return uuid.Nil, err
	}

	id, err := s.cfg.GetDBQueries().CreateClient(ctx, &repository.CreateClientParams{
		Name:       params.Name,
		Externalid: params.ExternalId,
	})
	if err != nil {
		return uuid.Nil, err
	}

	return id, nil
}

func (s *Service) normalizeCreate(params *CreateParams) error {
	err := normalizeName(&params.Name)
	if err != nil {
		return err
	}

	err = normalizeExternalID(&params.ExternalId)
	if err != nil {
		return err
	}

	return nil
}

func normalizeExternalID(id *string) error {
	if id == nil {
		return nil
	}

	trim := strings.TrimSpace(*id)
	pattern := regexp.MustCompile(`^[a-zA-Z0-9\_]+$`)
	if !pattern.MatchString(trim) {
		return errors.New("invalid external id")
	}

	*id = trim
	return nil
}