package logic

import (
	"context"
	"errors"

	"spark-server/internal/pkg/errs"
)

func (s *Service) CanSend(ctx context.Context, fromUserID, toUserID int64) error {
	if !s.ready() || fromUserID <= 0 || toUserID <= 0 {
		return errs.ErrForbidden
	}
	if fromUserID == toUserID {
		return errs.ErrForbidden
	}
	if _, err := s.repo.GetRelation(ctx, fromUserID, toUserID); err != nil {
		if errors.Is(err, errs.ErrNotFound) {
			return errs.ErrForbidden
		}
		return err
	}
	blocked, err := s.repo.BlockedEither(ctx, fromUserID, toUserID)
	if err != nil {
		return err
	}
	if blocked {
		return errs.ErrForbidden
	}
	return nil
}