import uuid

from sqlalchemy.ext.asyncio import AsyncSession

from app.models.game import Game

TOOL_SCHEMA = {
    "name": "end_game",
    "description": (
        "Call when the story reaches a real conclusion — the party wins, loses, or a one-shot's "
        "plot is resolved. Marks the game as ended so players see a clear ending. Do not call this "
        "just because a scene ends; only for a genuine story conclusion."
    ),
    "parameters": {
        "type": "object",
        "properties": {
            "reason": {
                "type": "string",
                "description": (
                    "A short narrative summary of how/why the story ended (victory, defeat, or "
                    "resolution), shown to the players, e.g. 'Das Dorf ist gerettet, die Kerze brennt wieder.'"
                ),
            },
        },
        "required": ["reason"],
    },
}


async def end(session: AsyncSession, game_id: uuid.UUID, tool_input: dict) -> dict:
    game = await session.get(Game, game_id)
    if game is None:
        raise ValueError(f"Game {game_id} not found")

    if game.status != "ended":
        game.status = "ended"
        game.ended_reason = tool_input["reason"]
        await session.commit()

    return {"status": "ended", "reason": game.ended_reason}