package dm

import (
	"context"

	"github.com/noderunners/nip05api/internal/messages"
)

type Service struct {
	repo      *Repo
	templates *messages.Templates
	enabled   bool
}

func NewService(repo *Repo, t *messages.Templates, enabled bool) *Service {
	return &Service{repo: repo, templates: t, enabled: enabled}
}

func (s *Service) Enabled() bool { return s.enabled }

// Send renders the template for the given event and enqueues a DM. Empty rendered
// content short-circuits and returns nil.
func (s *Service) Send(ctx context.Context, event EventType, pubkey string, vars map[string]string) error {
	if !s.enabled {
		return nil
	}
	content, err := s.templates.Render(string(event), vars)
	if err != nil {
		return err
	}
	if content == "" {
		return nil
	}
	return s.repo.Insert(ctx, event, pubkey, content)
}