"""Toy satellite planner adapter.

Exposes a simple interface to produce local constraints and accept PlanDelta commits.
This is a stub implementation intended for integration tests and adapter conformance.
"""
from typing import Dict, Any
from ..plan_delta import PlanDelta


class SatPlannerAdapter:
    def __init__(self, node_id: str):
        self.node_id = node_id
        self.local_state: Dict[str, Any] = {"fuel": 100.0, "power": 100.0}

    def describe_local_problem(self) -> Dict[str, Any]:
        # returns a serializable local problem description
        return {"node_id": self.node_id, "state": self.local_state}

    def apply_delta(self, delta: PlanDelta) -> bool:
        # naive application: if commitment contains a "burn" element, deduct fuel
        for c in delta.commitments.value():
            if isinstance(c, dict) and c.get("type") == "burn":
                amount = c.get("fuel", 0.0)
                if self.local_state["fuel"] >= amount:
                    self.local_state["fuel"] -= amount
                else:
                    return False
        return True


def create(node_id: str):
    return SatPlannerAdapter(node_id)