"use client";
/**
 * 订阅 checkout 触发按钮
 *
 * 包装 `SubscriptionCtaButton` —— 通过 payment 状态机创建后端订单并拉起支付。
 */
import { usePaymentLaunchFlow } from "@/app/_hooks/use-payment-launch-flow";
import {
  usePaymentDispatch,
  usePaymentState,
} from "@/stores/payment/payment-context";
import { Logger } from "@/utils";

import { StripePaymentDialog } from "./stripe-payment-dialog";
import dialogStyles from "./stripe-payment-dialog.module.css";
import { SubscriptionCtaButton } from "./subscription-cta-button";

const log = new Logger("SubscriptionCheckoutButton");

export interface SubscriptionCheckoutButtonProps {
  /** 是否可用（未选套餐 / 未勾选协议 → false） */
  disabled?: boolean;
  subscriptionType: "vip" | "topup";
  returnTo?: "chat" | null;
}

export function SubscriptionCheckoutButton({
  disabled = false,
  subscriptionType,
  returnTo = null,
}: SubscriptionCheckoutButtonProps) {
  const payment = usePaymentState();
  const paymentDispatch = usePaymentDispatch();
  const paymentLaunch = usePaymentLaunchFlow({
    log,
    logScope: "subscription-checkout",
    payment,
    paymentDispatch,
    returnTo: returnTo ?? undefined,
    subscriptionType,
  });

  const isLoading =
    payment.isCreatingOrder ||
    payment.isPollingOrder;
  const readyLabel =
    subscriptionType === "topup" ? "Pay and Top Up" : "Pay and Activiate";
  const agreementLabel =
    subscriptionType === "topup"
      ? "Confirm the agreement and Top Up"
      : "Confirm the agreement and Activate";
  const label = payment.isPollingOrder
      ? "Processing payment..."
      : payment.isCreatingOrder
        ? "Creating order..."
        : payment.agreed
          ? readyLabel
          : agreementLabel;

  const handleClick = () => {
    if (disabled || isLoading) return;
    paymentLaunch.resetLaunchState();
    paymentDispatch({ type: "PaymentCreateOrderSubmitted" });
  };

  return (
    <>
      <SubscriptionCtaButton
        type="button"
        disabled={disabled}
        isLoading={isLoading}
        onClick={handleClick}
      >
        {label}
      </SubscriptionCtaButton>
      {payment.errorMessage ? (
        <p
          role="alert"
          style={{
            color: "#c0392b",
            fontSize: "0.875rem",
            marginTop: "0.5rem",
            textAlign: "center",
          }}
        >
          {payment.errorMessage}
        </p>
      ) : null}
      {paymentLaunch.shouldShowEzpayConfirmDialog ? (
        <EzpayRedirectConfirmDialog
          orderId={payment.currentOrderId ?? ""}
          isConfirming={paymentLaunch.isConfirmingEzpay}
          onCancel={paymentLaunch.handleEzpayCancel}
          onConfirm={paymentLaunch.handleEzpayConfirm}
        />
      ) : null}
      {paymentLaunch.shouldShowStripeDialog && paymentLaunch.stripeClientSecret ? (
        <StripePaymentDialog
          clientSecret={paymentLaunch.stripeClientSecret}
          onClose={paymentLaunch.handleStripeClose}
          onConfirmed={paymentLaunch.handleStripeConfirmed}
        />
      ) : null}
    </>
  );
}

interface EzpayRedirectConfirmDialogProps {
  orderId: string;
  isConfirming: boolean;
  onCancel: () => void;
  onConfirm: () => void;
}

function EzpayRedirectConfirmDialog({
  orderId,
  isConfirming,
  onCancel,
  onConfirm,
}: EzpayRedirectConfirmDialogProps) {
  return (
    <div
      className={dialogStyles.overlay}
      role="alertdialog"
      aria-modal="true"
      aria-labelledby="ezpay-redirect-title"
    >
      <div className={dialogStyles.dialog}>
        <div className={dialogStyles.header}>
          <h2 id="ezpay-redirect-title" className={dialogStyles.title}>
            Continue to GCash?
          </h2>
          <p className={dialogStyles.content}>
            Your order has been created. Continue to GCash to finish the
            payment.
          </p>
          <p className={dialogStyles.content}>Order No. {orderId}</p>
        </div>
        <div className={dialogStyles.actions}>
          <button
            type="button"
            className={`${dialogStyles.button} ${dialogStyles.secondary}`}
            disabled={isConfirming}
            onClick={onCancel}
          >
            Cancel
          </button>
          <button
            type="button"
            className={`${dialogStyles.button} ${dialogStyles.primary}`}
            disabled={isConfirming}
            onClick={onConfirm}
          >
            {isConfirming ? "Opening..." : "Continue"}
          </button>
        </div>
      </div>
    </div>
  );
}
