shaguabijia-app-server/app/api/v1/ad.py

"""看激励视频发奖 endpoint。

路由前缀 `/api/v1/ad`:
  GET  /pangle-callback   穿山甲 S2S 发奖回调(**无 JWT,靠验签**),穿山甲服务器调
  GET  /reward-status     客户端查今日看广告发奖进度(Bearer)

发奖走服务端:激励视频播完穿山甲回调本接口,验签通过后幂等发金币。客户端只负责
看完后刷新余额,不参与发奖,被破解也刷不到钱。
"""
from __future__ import annotations

import logging
import uuid

from fastapi import APIRouter, Depends, HTTPException, Request, status

from app.api.deps import CurrentUser, DbSession
from app.core import rewards
from app.core.config import settings
from app.integrations import pangle
from app.core.ratelimit import rate_limit
from app.crud import ad_reward as crud_ad
from app.schemas.ad import AdRewardStatusOut, PangleCallbackOut, TestGrantOut

logger = logging.getLogger("shagua.ad")

router = APIRouter(prefix="/api/v1/ad", tags=["ad"])

# GroMore 回调 is_verify=false 时透传给客户端 SDK 的错误码(自定义,仅用于排查/客户端提示)
REASON_OK = 0
REASON_BAD_PARAMS = 1  # 验签过但缺 trans_id / user_id 非数字
REASON_UNKNOWN_USER = 2  # user_id 不存在(可能伪造)


@router.get(
    "/pangle-callback",
    response_model=PangleCallbackOut,
    summary="穿山甲激励视频发奖回调(S2S,验签)",
    dependencies=[Depends(rate_limit(300, 60, "pangle-callback"))],
)
def pangle_callback(request: Request, db: DbSession) -> PangleCallbackOut:
    """穿山甲 GroMore 在激励视频播完后回调,带 user_id / trans_id / reward_amount / sign 等 query 参数。

    流程:开关/密钥就绪 → 验签(SHA256(m-key:trans_id)) → 解析 user_id/reward_amount → 幂等发金币。
    验签失败 403(留给真请求重试);参数缺/坏或 user 不存在 → is_verify=false + reason(不发,不重试)。
    granted / capped → is_verify=true + reason=0。
    """
    if not settings.pangle_callback_configured:
        raise HTTPException(
            status_code=status.HTTP_503_SERVICE_UNAVAILABLE, detail="pangle callback not configured"
        )

    params = dict(request.query_params)

    if not pangle.verify_callback_sign(params, settings.PANGLE_REWARD_SECRET):
        logger.warning("pangle callback bad sign trans_id=%s", params.get("trans_id"))
        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="bad sign")

    trans_id = params.get("trans_id") or ""
    raw_user_id = params.get("user_id") or ""
    if not trans_id or not raw_user_id.isdigit():
        # 验签过了但参数缺/坏:不发奖(is_verify=false),带错误码
        logger.warning("pangle callback bad params: %s", params)
        return PangleCallbackOut(is_verify=False, reason=REASON_BAD_PARAMS)

    user_id = int(raw_user_id)
    coin = rewards.resolve_ad_reward_coin(params.get("reward_amount"))
    raw = "&".join(f"{k}={v}" for k, v in sorted(params.items()) if k != "sign")
    try:
        rec = crud_ad.grant_ad_reward(
            db, user_id, trans_id, coin=coin,
            reward_name=params.get("reward_name"), raw=raw[:1024],
        )
    except crud_ad.UnknownUserError:
        logger.warning("pangle callback unknown user_id=%d trans_id=%s", user_id, trans_id)
        return PangleCallbackOut(is_verify=False, reason=REASON_UNKNOWN_USER)

    logger.info(
        "ad reward user_id=%d trans_id=%s status=%s coin=%d", user_id, trans_id, rec.status, rec.coin
    )
    # granted / capped 均算"已处理":is_verify=true 不让穿山甲重试(capped 只是没加币)
    return PangleCallbackOut(is_verify=True, reason=REASON_OK)


@router.get("/reward-status", response_model=AdRewardStatusOut, summary="今日看广告发奖进度")
def reward_status(user: CurrentUser, db: DbSession) -> AdRewardStatusOut:
    used, limit, coin_per = crud_ad.today_status(db, user.id)
    return AdRewardStatusOut(
        used_today=used,
        daily_limit=limit,
        remaining=max(0, limit - used),
        coin_per_ad=coin_per,
    )


@router.post(
    "/test-grant",
    response_model=TestGrantOut,
    summary="[仅本地联调]模拟穿山甲回调发奖",
    dependencies=[Depends(rate_limit(60, 60, "ad-test-grant"))],
)
def test_grant(user: CurrentUser, db: DbSession) -> TestGrantOut:
    """⚠️ 仅本地联调用:没部署公网、穿山甲 S2S 回调打不到本地时,客户端(debug 包)看完广告后
    调这个接口,直接走与回调相同的发奖逻辑(幂等 + 每日上限),验证"看广告→金币到账"全链路。

    必须 settings.AD_REWARD_TEST_GRANT_ENABLED=true 才开放(默认 False),否则 404 当不存在。
    它让已登录客户端能自助发奖 = 绕过反作弊,**生产必须关闭**。
    """
    if not settings.AD_REWARD_TEST_GRANT_ENABLED:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="not found")

    # 每次新 trans_id,模拟一次独立的穿山甲发奖回调(幂等键各不相同 → 每次都发,直到当日上限)
    trans_id = f"test-{user.id}-{uuid.uuid4().hex}"
    try:
        rec = crud_ad.grant_ad_reward(
            db, user.id, trans_id, reward_name="测试发奖", raw="client debug test-grant"
        )
    except crud_ad.UnknownUserError as e:
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="user not found") from e

    used, limit, coin_per = crud_ad.today_status(db, user.id)
    logger.info("ad TEST grant user_id=%d status=%s coin=%d", user.id, rec.status, rec.coin)
    return TestGrantOut(
        granted=(rec.status == "granted"),
        status=rec.status,
        coin=rec.coin,
        used_today=used,
        daily_limit=limit,
        remaining=max(0, limit - used),
        coin_per_ad=coin_per,
    )