"""模拟穿山甲激励视频 S2S 发奖回调,本地验证「验签 → 幂等发币 → 余额到账」闭环。

真穿山甲回调需要后端公网可达 + 穿山甲后台配置"奖励回调 URL",本地内网拿不到。本脚本用
FastAPI TestClient 在进程内打**真实** endpoint(`/api/v1/ad/pangle-callback`)、写**真实** DB
(./data/app.db),绕开公网依赖,证明后端这半条链路 OK——发完进 App 收益明细/重进福利页即可看到余额。

用法(在 shaguabijia-app-server 目录下,用本项目 python 跑):
    python scripts/sim_pangle_callback.py             # 给最近注册用户发一次(随机 trans_id)
    python scripts/sim_pangle_callback.py 2           # 指定 user_id=2
    python scripts/sim_pangle_callback.py 2 --trans t1 # 指定交易号;同号再跑应 Δ0(验幂等)
"""
from __future__ import annotations

import argparse
import os
import sys
import uuid

if hasattr(sys.stdout, "reconfigure"):
    sys.stdout.reconfigure(encoding="utf-8")

# 必须在 import app.* 之前开 PANGLE 开关(settings 在 import 时构造并缓存);
# 这里 setdefault 不覆盖 .env / 真实环境已有的值。
os.environ.setdefault("PANGLE_CALLBACK_ENABLED", "true")
os.environ.setdefault("PANGLE_REWARD_SECRET", "dev-local-pangle-secret")

from fastapi.testclient import TestClient  # noqa: E402
from sqlalchemy import select  # noqa: E402

from app.integrations import pangle  # noqa: E402
from app.core.config import settings  # noqa: E402
from app.core.rewards import AD_REWARD_COIN  # noqa: E402
from app.crud import wallet as crud_wallet  # noqa: E402
from app.db.session import SessionLocal  # noqa: E402
from app.main import app  # noqa: E402
from app.models.user import User  # noqa: E402


def _latest_user_id() -> int | None:
    db = SessionLocal()
    try:
        return db.execute(select(User.id).order_by(User.id.desc())).scalars().first()
    finally:
        db.close()


def _coin_balance(user_id: int) -> int:
    db = SessionLocal()
    try:
        return crud_wallet.get_or_create_account(db, user_id).coin_balance
    finally:
        db.close()


def main() -> None:
    p = argparse.ArgumentParser(description="模拟穿山甲发奖回调")
    p.add_argument("user_id", nargs="?", type=int, default=None, help="目标 user_id(默认最近注册)")
    p.add_argument("--trans", default=None, help="交易号(默认随机);同号重跑验幂等")
    args = p.parse_args()

    if not settings.pangle_callback_configured:
        raise SystemExit("PANGLE 未配置(PANGLE_CALLBACK_ENABLED / PANGLE_REWARD_SECRET)")

    uid = args.user_id or _latest_user_id()
    if uid is None:
        raise SystemExit("DB 里没有用户,先在 App 登录一次再跑")

    trans_id = args.trans or f"sim_{uuid.uuid4().hex[:12]}"
    before = _coin_balance(uid)

    params = {
        "user_id": str(uid),
        "trans_id": trans_id,
        "reward_name": "金币",
        # 镜像生产:后台代码位"奖励数量"应配成 AD_REWARD_COIN,回调据此发金币
        "reward_amount": str(AD_REWARD_COIN),
    }
    params["sign"] = pangle.build_sign(trans_id, settings.PANGLE_REWARD_SECRET)

    resp = TestClient(app).get("/api/v1/ad/pangle-callback", params=params)
    after = _coin_balance(uid)

    print(f"user_id={uid}  trans_id={trans_id}")
    print(f"HTTP {resp.status_code}  {resp.json()}")
    print(f"金币: {before} -> {after}  (Δ{after - before}, 单次应发 {AD_REWARD_COIN})")
    print("同 trans_id 再跑应 Δ0(幂等);进 App 收益明细/重进福利页刷新即可看到余额。")


if __name__ == "__main__":
    main()