import cloud from '@lafjs/cloud';
import Utils from "@/Utils";
const db = cloud.database();
const MONTH_CARD_DURATION = 30 * 24 * 60 * 60 * 1000;
export default async function (ctx: FunctionContext) {
    const action = ctx.body.action;
    const uid = ctx.body.uid;
    if (!action) {
        return { code: 0, data: null, msg: "未获取到action" };
    }
    if (!uid) {
        return { code: 0, data: null, msg: "未获取到uid" };
    }
    let dbname = "users";
    const gameName = ctx.body.gameName;
    if (gameName == "iaa") {
        dbname = "usersAd";
    }
    const res = await db.collection(dbname).where({ _id: uid }).getOne();
    const token = ctx.body.token;
    if (res.data && res.data.token) {
        const isTokenValid = Utils.checkToken(token, res.data.token);
        if (!isTokenValid) {
            return { code: 0, data: null, msg: "token校验失败" };
        }
    }

    switch (action) {
        case "save": {
            const now = Date.now();
            const oldMonthCardTime = Number(res.data?.monthCardTime) || 0;
            const oldMonthCardReward = Number(res.data?.monthCardReward) || 0;
            const outTradeNo = ctx.body.outTradeNo;

            // 测试账号校验月卡订单，并确保同一订单只延长一次。
            if (outTradeNo) {
                const order = await db.collection("order").where({ outTradeNo: outTradeNo }).getOne();
                if (!order.data ||
                    order.data.itemid !== "month_Card" ||
                    order.data.openid !== res.data?.openid) {
                    return { code: 0, data: null, msg: "月卡订单校验失败" };
                }
                if (order.data.state !== 2) {
                    return { code: 0, data: null, msg: "月卡订单尚未完成发货确认" };
                }
                if (order.data.monthCardGranted === true) {
                    return {
                        code: 1,
                        data: {
                            monthCardTime: oldMonthCardTime,
                            monthCardReward: oldMonthCardReward,
                            alreadyGranted: true
                        },
                        msg: "该月卡订单已续订"
                    };
                }
            }

            // 有效期内续订：从原到期时间继续加30天；
            // 已过期或首次购买：从当前时间加30天。
            const monthCardTime = Math.max(oldMonthCardTime, now) + MONTH_CARD_DURATION;
            // 有效期内续订保留当天领取状态，避免同一天重复领取。
            const monthCardReward = oldMonthCardTime > now ? oldMonthCardReward : 0;

            await db.collection(dbname).where({ _id: uid }).update({
                monthCardTime: monthCardTime,
                monthCardReward: monthCardReward
            });

            if (outTradeNo) {
                await db.collection("order").where({ outTradeNo: outTradeNo }).update({
                    monthCardGranted: true
                });
            }

            return {
                code: 1,
                data: {
                    monthCardTime: monthCardTime,
                    monthCardReward: monthCardReward,
                    alreadyGranted: false
                },
                msg: "月卡记录成功"
            };
        }

        case "read": {
            const monthCardTime = res.data?.monthCardTime || 0;
            const monthCardReward = res.data?.monthCardReward || 0;
            if (monthCardTime < Date.now()) {
                return {
                    code: 0,
                    data: {
                        monthCardTime: monthCardTime,
                        monthCardReward: monthCardReward
                    },
                    msg: "不在有效期"
                };
            }
            return {
                code: 1,
                data: { monthCardTime: monthCardTime },
                msg: "成功"
            };

        }

        default:
            return {
                code: 400,
                message: "无效的操作类型，请使用 save 或 read"
            };
    }
}