package logic

import (
	"context"
	"errors"

	"spark-server/internal/module/friend/entity"
	"spark-server/internal/pkg/errs"
)

func (s *Service) ListFriendIDs(ctx context.Context, userID int64) ([]int64, error) {
	if !s.ready() || userID <= 0 {
		return nil, errs.ErrUnauthorized
	}
	return s.repo.ListFriendIDs(ctx, userID)
}

func (s *Service) ListBlockedPeerIDs(ctx context.Context, userID int64) ([]int64, error) {
	if !s.ready() || userID <= 0 {
		return nil, errs.ErrUnauthorized
	}
	return s.repo.ListBlockedPeerIDs(ctx, userID)
}

func (s *Service) Relation(ctx context.Context, userID, peerID int64) (*entity.Relation, error) {
	if !s.ready() || userID <= 0 || peerID <= 0 {
		return nil, errs.ErrNotFound
	}
	return s.repo.GetRelation(ctx, userID, peerID)
}

func (s *Service) BlockedEither(ctx context.Context, a, b int64) (bool, error) {
	if !s.ready() || a <= 0 || b <= 0 || a == b {
		return false, nil
	}
	return s.repo.BlockedEither(ctx, a, b)
}

func (s *Service) AreFriends(ctx context.Context, a, b int64) (bool, error) {
	if !s.ready() || a <= 0 || b <= 0 || a == b {
		return false, nil
	}
	ab, err := s.repo.GetRelation(ctx, a, b)
	if err != nil {
		if errors.Is(err, errs.ErrNotFound) {
			return false, nil
		}
		return false, err
	}
	if !ab.Active() {
		return false, nil
	}
	ba, err := s.repo.GetRelation(ctx, b, a)
	if err != nil {
		if errors.Is(err, errs.ErrNotFound) {
			return false, nil
		}
		return false, err
	}
	return ba.Active(), nil
}