function toNumberRu(s) {
    if (!s) return null;
    const cleaned = String(s)
        .replace(/\s/g, "")
        .replace(",", ".")
        .replace(/[^\d.]/g, "");
    const n = Number(cleaned);
    console.log("toNumberRu: " + Number.isFinite(n));
    return Number.isFinite(n) ? n : null;
}

function paringSms(sms) {
    console.log(sms);

    const raw = sms.body.message ?? "";

    console.log("raw: " + raw);

    const text = String(raw).replace(/\s+/g, " ").trim();
    const lower = text.toLowerCase();

    console.log("text: " + text);

    const sender = sms.body?.sender ?? null;

    console.log("sender: " + sender);

    // 1) Классификация
    let action = "unknown";

    const rules = [
        { action: "salary", re: /зарплат/i },
        { action: "reversal", re: /(отмена|возврат)/i },
        { action: "payment", re: /(оплата|покупк)/i },
        { action: "transfer", re: /перевод/i },
        { action: "writeoff", re: /списан/i },
        { action: "income", re: /(поступлен|поступление|зачислен)/i },
    ];

    for (const r of rules) {
        if (r.re.test(lower)) {
            action = r.action;
            break;
        }
    }

    console.log("action: " + action);

    // 2) Баланс
    const balanceRegex =
        /(баланс)[:\s]*([0-9][0-9\s]*[.,]?\d{0,2})\s*(₽|руб\.?|rub|р)(?=\s|$)/i;
    const balanceMatch = text.match(balanceRegex);
    console.log("balanceMatch: " + balanceMatch);

    const balance = balanceMatch ? toNumberRu(balanceMatch[2]) : null;

    console.log("balance: " + balance);

    // 3) Сумма операции
    let amount = null;
    const amountNearActionRegex =
        /(отмена[:\s-]*оплата|отмена|списание|оплата|перевод|поступление|зарплат[аы]?)[\s:]*([0-9][0-9\s]*[.,]?\d{0,2})\s*(₽|руб\.?|rub|р)/i;

    const near = text.match(amountNearActionRegex);

    console.log("near: " + near);

    if (near) {
        amount = toNumberRu(near[2]);
        console.log(amount);
    } else {
        const textWithoutBalance = text.replace(balanceRegex, " ");

        console.log("textWithoutBalance: " + textWithoutBalance);

        const amountRegex = /([0-9][0-9\s]*[.,]?\d{0,2})\s*(₽|руб\.?|rub|р)/i;
        const m = textWithoutBalance.match(amountRegex);
        amount = m ? toNumberRu(m[1]) : null;
        console.log("m: " + m);
    }

    const currency = "RUB";

    // 4) signedAmount
    let signedAmount = amount;
    if (amount != null) {
        if (["payment", "transfer", "writeoff"].includes(action))
            signedAmount = -Math.abs(amount);
        if (["income", "salary", "reversal"].includes(action))
            signedAmount = Math.abs(amount);
    }

    console.log({
        raw_sms: raw,
        sms_text: text,
        sms_sender: sender,
        action, // income/payment/transfer/salary/reversal/writeoff
        amount,
        signed_amount: signedAmount,
        currency,
        balance,
        received_at: new Date().toISOString(),
    });

    return [
        {
            raw_sms: raw,
            sms_text: text,
            sms_sender: sender,
            action, // income/payment/transfer/salary/reversal/writeoff
            amount,
            signed_amount: signedAmount,
            currency,
            balance,
            received_at: new Date().toISOString(),
        },
    ];
}

const input_sms = {
    body: {
        message:
            'Оплата 980р Карта*4215 "SKURATOV COFFE Баланс 207033.86р 19:52',
        sender: "VTB",
        formatted_message:
            '📩 *New SMS Received*\n👤 *From:* VTB\n\nОплата 980р Карта*4215 "SKURATOV COFFE Баланс 207033.86р 19:52',
        contact: "",
    },
};

const input_sms2 = {
    body: {
        formatted_message:
            "📩 *New SMS Received*\n👤 *From:* VTB\n\nОплата 6800р Карта*4215 IP SHARAFETDINO Баланс 199083.86р 09:56",
        contact: "",
        sender: "VTB",
        message:
            "Оплата 6800р Карта*4215 IP SHARAFETDINO Баланс 199083.86р 09:56",
    },
};

paringSms(input_sms);
// paringSms(input_sms2);