tercul-backend/repositories/edge_repository.go

package repositories

import (
	"context"
	"gorm.io/gorm"
	"tercul/models"
)

// EdgeRepository defines CRUD operations for the polymorphic edge table.
type EdgeRepository interface {
	BaseRepository[models.Edge]
	ListBySource(ctx context.Context, sourceTable string, sourceID uint) ([]models.Edge, error)
}

type edgeRepository struct {
	BaseRepository[models.Edge]
	db *gorm.DB
}

// NewEdgeRepository creates a new EdgeRepository.
func NewEdgeRepository(db *gorm.DB) EdgeRepository {
	return &edgeRepository{
		BaseRepository: NewBaseRepositoryImpl[models.Edge](db),
		db:             db,
	}
}

// ListBySource finds edges by source table and ID
func (r *edgeRepository) ListBySource(ctx context.Context, sourceTable string, sourceID uint) ([]models.Edge, error) {
	var edges []models.Edge
	if err := r.db.WithContext(ctx).Where("source_table = ? AND source_id = ?", sourceTable, sourceID).Find(&edges).Error; err != nil {
		return nil, err
	}
	return edges, nil
}