"""Relations app action endpoints."""
from __future__ import annotations

from quart import Blueprint, g, jsonify, request

from shared.infrastructure.actions import ACTION_HEADER


def register() -> Blueprint:
    bp = Blueprint("actions", __name__, url_prefix="/internal/actions")

    @bp.before_request
    async def _require_action_header():
        if not request.headers.get(ACTION_HEADER):
            return jsonify({"error": "forbidden"}), 403
        from shared.infrastructure.internal_auth import validate_internal_request
        if not validate_internal_request():
            return jsonify({"error": "forbidden"}), 403

    _handlers: dict[str, object] = {}

    @bp.post("/<action_name>")
    async def handle_action(action_name: str):
        handler = _handlers.get(action_name)
        if handler is None:
            return jsonify({"error": "unknown action"}), 404
        try:
            result = await handler()
            return jsonify(result)
        except Exception as exc:
            import logging
            logging.getLogger(__name__).exception("Action %s failed", action_name)
            return jsonify({"error": str(exc)}), 500

    # --- attach-child ---
    async def _attach_child():
        """Create or revive a ContainerRelation."""
        from shared.services.relationships import attach_child

        data = await request.get_json(force=True)
        rel  = await attach_child(
            g.s,
            parent_type=data["parent_type"],
            parent_id=data["parent_id"],
            child_type=data["child_type"],
            child_id=data["child_id"],
            label=data.get("label"),
            sort_order=data.get("sort_order"),
        )
        return {
            "id":          rel.id,
            "parent_type": rel.parent_type,
            "parent_id":   rel.parent_id,
            "child_type":  rel.child_type,
            "child_id":    rel.child_id,
            "sort_order":  rel.sort_order,
        }

    _handlers["attach-child"] = _attach_child

    # --- detach-child ---
    async def _detach_child():
        """Soft-delete a ContainerRelation."""
        from shared.services.relationships import detach_child

        data    = await request.get_json(force=True)
        deleted = await detach_child(
            g.s,
            parent_type=data["parent_type"],
            parent_id=data["parent_id"],
            child_type=data["child_type"],
            child_id=data["child_id"],
        )
        return {"deleted": deleted}

    _handlers["detach-child"] = _detach_child

    return bp