"""Cart app action endpoints.

Exposes write operations at ``/internal/actions/<action_name>`` for
cross-app callers (login handler) via the internal action client.
"""
from __future__ import annotations

from quart import Blueprint, g, jsonify, request

from shared.infrastructure.actions import ACTION_HEADER
from shared.services.registry import services


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

    # --- adopt-cart-for-user ---
    async def _adopt_cart():
        data = await request.get_json()
        await services.cart.adopt_cart_for_user(
            g.s, data["user_id"], data["session_id"],
        )
        return {"ok": True}

    _handlers["adopt-cart-for-user"] = _adopt_cart

    # --- clear-cart-for-order ---
    async def _clear_cart_for_order():
        """Soft-delete cart items after an order is paid. Called by orders service."""
        from bp.cart.services.clear_cart_for_order import clear_cart_for_order
        from shared.models.order import Order

        data = await request.get_json()
        user_id = data.get("user_id")
        session_id = data.get("session_id")
        page_post_id = data.get("page_post_id")

        # Build a minimal order-like object with the fields clear_cart_for_order needs
        order = type("_Order", (), {
            "user_id": user_id,
            "session_id": session_id,
        })()

        await clear_cart_for_order(g.s, order, page_post_id=page_post_id)
        return {"ok": True}

    _handlers["clear-cart-for-order"] = _clear_cart_for_order

    return bp
