import cloud from '@lafjs/cloud'
import Utils from "@/Utils";
import {
  SIGN_IN_REWARD_DAYS,
  addSignInClaim,
  buildClaimId,
  getChinaDateKey,
  getSignInActivityStatus,
  getSignInClaims,
  getSignInConfig,
  markSignInCompleted,
  normalizeSignInState,
} from "@/SignInActivity";

const db = cloud.database();

export default async function (ctx: FunctionContext) {
  const uid = ctx.body?.uid;
  if (!uid) {
    return { code: 0, data: null, msg: "未获取到uid" };
  }
  if (ctx.body?.gameName === "iaa") {
    return { code: 0, data: null, msg: "七日签到仅支持主游戏" };
  }
  const userResult = await db.collection("users").where({ _id: uid }).getOne();
  const user = userResult.data;
  if (!user) {
    return { code: 0, data: null, msg: "未获取到用户信息" };
  }
  if (user.token && !Utils.checkToken(ctx.body?.token, user.token)) {
    return { code: 0, data: null, msg: "token校验失败" };
  }

  const state = normalizeSignInState(user.signInActivity);
  if (!state) {
    return { code: 0, data: null, msg: "签到活动尚未开启" };
  }
  const config = await getSignInConfig(state.activityId);
  if (!config) {
    return { code: 0, data: null, msg: "签到活动配置不存在或配置无效" };
  }
  const now = Date.now();
  let claims = await getSignInClaims(uid, state.activityId);
  const status = getSignInActivityStatus(state, claims.length, now);
  if (status === "completed") {
    return { code: 0, data: null, msg: "七日签到奖励已全部领取" };
  }
  if (status === "expired") {
    return { code: 0, data: null, msg: "七日签到活动已结束" };
  }

  const dateKey = getChinaDateKey(now);
  if (claims.some(claim => String(claim.dateKey) === dateKey)) {
    return { code: 0, data: null, msg: "今天已经领取" };
  }
  const rewardDay = claims.length + 1;
  const reward = config.rewards[rewardDay - 1];
  if (!reward || rewardDay > SIGN_IN_REWARD_DAYS) {
    return { code: 0, data: null, msg: "签到奖励配置异常" };
  }
  const claimId = buildClaimId(uid, state.activityId, dateKey);
  const payload = {
    _id: claimId,
    claimId,
    uid,
    activityId: state.activityId,
    dateKey,
    rewardDay,
    rewards: reward.items,
    claimedAt: now,
  };
  try {
    await addSignInClaim(payload);
  } catch {
    return { code: 0, data: null, msg: "今天已经领取" };
  }

  claims = claims.concat(payload);
  const completed = claims.length >= SIGN_IN_REWARD_DAYS;
  if (completed) {
    await markSignInCompleted(uid, state, now);
  }
  return {
    code: 1,
    data: {
      claimId,
      rewardDay,
      rewards: reward.items,
      claimedCount: claims.length,
      todayClaimed: true,
      completed,
    },
    msg: "领取成功",
  };
}