"use client";

import { useEffect, useRef, useState } from "react";
import { useRouter } from "next/navigation";

import { usePaymentRouteFlow } from "@/app/_hooks/use-payment-route-flow";
import type { PayChannel } from "@/data/schemas/payment";
import {
  DEFAULT_CHARACTER,
  getCharacterBySlug,
} from "@/data/constants/character";
import {
  consumeSubscriptionExitUrl,
  resolveSubscriptionSuccessExitUrl,
  type SubscriptionReturnTo,
} from "@/lib/navigation/subscription_exit";

import type { SubscriptionType } from "./subscription-screen.helpers";

export interface UseSubscriptionPaymentFlowInput {
  subscriptionType: SubscriptionType;
  shouldResumePendingOrder: boolean;
  returnTo: SubscriptionReturnTo;
  initialPayChannel: PayChannel;
  sourceCharacterSlug?: string | null;
  initialPlanId?: string | null;
  commercialOfferId?: string | null;
  resumeOrderId?: string | null;
  chatActionId?: string | null;
}

export function useSubscriptionPaymentFlow({
  subscriptionType,
  shouldResumePendingOrder,
  returnTo,
  initialPayChannel,
  sourceCharacterSlug = null,
  initialPlanId = null,
  commercialOfferId = null,
  resumeOrderId = null,
  chatActionId = null,
}: UseSubscriptionPaymentFlowInput) {
  const router = useRouter();
  const supportCharacter = getCharacterBySlug(sourceCharacterSlug);
  const exitCharacterSlug = supportCharacter?.slug ?? DEFAULT_CHARACTER.slug;
  const { payment, paymentDispatch } = usePaymentRouteFlow({
    initialPayChannel,
    paymentType: subscriptionType,
    shouldResumePendingOrder,
    characterId: supportCharacter?.id,
    initialPlanId,
    commercialOfferId,
    resumeOrderId,
    chatActionId,
  });
  const successDialogShownOrderRef = useRef<string | null>(null);
  const [showPaymentSuccessDialog, setShowPaymentSuccessDialog] =
    useState(false);

  useEffect(() => {
    if (!payment.isPaid || !payment.currentOrderId) return;
    if (successDialogShownOrderRef.current === payment.currentOrderId) return;

    successDialogShownOrderRef.current = payment.currentOrderId;
    setShowPaymentSuccessDialog(true);
  }, [payment.currentOrderId, payment.isPaid]);

  const handleBackClick = () => {
    void (async () => {
      router.replace(
        await consumeSubscriptionExitUrl(returnTo, exitCharacterSlug),
      );
    })();
  };

  const handlePaymentSuccessClose = () => {
    setShowPaymentSuccessDialog(false);
    paymentDispatch({ type: "PaymentReset" });
    void (async () => {
      router.replace(
        await resolveSubscriptionSuccessExitUrl(
          returnTo,
          exitCharacterSlug,
        ),
      );
    })();
  };

  return {
    payment,
    paymentDispatch,
    showPaymentSuccessDialog,
    handleBackClick,
    handlePaymentSuccessClose,
  };
}