json.dumps(
    {
        "tables": {
            f'"{model.schema}"."{model.table}"': {
                "columns": model.columns,
                "relations": {
                    "explicit": [
                        {
                            "source": str(rel.source),
                            "destination": str(rel.destination),
                        }
                        for rel in (
                            model.explicit_relations
                            if args.output_direction == "foreign-to-primary"
                            else [
                                rel
                                for related_model in schema.tables
                                for rel in related_model.explicit_relations
                                if rel.destination == model
                            ]
                        )
                    ],
                    "implicit": [
                        {
                            "source": str(rel.source),
                            "destination": str(rel.destination),
                        }
                        for rel in (
                            model.implicit_relations
                            if args.output_direction == "foreign-to-primary"
                            else [
                                rel
                                for related_model in schema.tables
                                for rel in related_model.implicit_relations
                                if rel.destination == model
                            ]
                        )
                    ],
                },
            }
            for model in schema.tables
        }
    }
)