"""Keep a saved geometry discoverable even when its inline response is shortened."""

from uuid import NAMESPACE_URL, uuid5

from app.mcp.models import QueryResult


def saved_presentation_preview(result: QueryResult) -> dict | None:
    if result.source != "generate_node_coverage" or not result.evidence_id:
        return None
    analysis = result.data.get("result") if isinstance(result.data, dict) else None
    if not isinstance(analysis, dict):
        return None
    payload = analysis.get("map_payload")
    if not isinstance(payload, dict) or not payload.get("features"):
        return None
    coverage = analysis.get("coverage", {})
    return {
        "command": {
            "action": "set_overlay", "mode": "geometry", "evidence_id": result.evidence_id,
            "overlay_id": f"node-coverage-{uuid5(NAMESPACE_URL, result.evidence_id)}",
            "title": "节点空间覆盖示意",
        },
        "display_only": True,
        "coverage_status": coverage.get("status"),
        "groups": {role: {
            "node_count": len(group.get("node_ids", [])),
            "mapped_node_count": group.get("mapped_node_count", 0),
            "missing_node_count": len(group.get("missing_node_ids", [])),
        } for role, group in coverage.get("groups", {}).items()},
    }