import React, { useState, useRef, useEffect } from 'react';
import { useSession } from 'next-auth/react';
import { useRouter } from 'next/router';
import { useToast } from '@/hooks/useToast';
import axios from 'axios';
import { Card } from 'primereact/card';
import { Message } from 'primereact/message';
import useWindowWidth from '@/hooks/useWindowWidth';
import { Menu } from "primereact/menu";
import GenericButton from '@/components/buttons/GenericButton';
import { ProgressSpinner } from 'primereact/progressspinner';
import SubscriptionPaymentButtons from '@/components/bitcoinConnect/SubscriptionPaymentButton';
import Image from 'next/image';
import NostrIcon from '../../public/images/nostr.png';
import CalendlyEmbed from '@/components/profile/subscription/CalendlyEmbed';
import CancelSubscription from '@/components/profile/subscription/CancelSubscription';
import RenewSubscription from '@/components/profile/subscription/RenewSubscription';
import Nip05Form from '@/components/profile/subscription/Nip05Form';
import LightningAddressForm from '@/components/profile/subscription/LightningAddressForm';

const Subscribe = () => {
    const { data: session, update } = useSession();
    const { showToast } = useToast();
    const router = useRouter();
    const menu = useRef(null);
    const windowWidth = useWindowWidth();
    const [user, setUser] = useState(null);
    const [isProcessing, setIsProcessing] = useState(false);
    const [subscribed, setSubscribed] = useState(false);
    const [subscribedUntil, setSubscribedUntil] = useState(null);
    const [subscriptionExpiredAt, setSubscriptionExpiredAt] = useState(null);
    const [calendlyVisible, setCalendlyVisible] = useState(false);
    const [lightningAddressVisible, setLightningAddressVisible] = useState(false);
    const [nip05Visible, setNip05Visible] = useState(false);
    const [cancelSubscriptionVisible, setCancelSubscriptionVisible] = useState(false);
    const [renewSubscriptionVisible, setRenewSubscriptionVisible] = useState(false);

    useEffect(() => {
        if (session && session?.user) {
            setUser(session.user);
        }
    }, [session])

    useEffect(() => {
        if (user && user.role) {
            setSubscribed(user.role.subscribed);
            const subscribedAt = new Date(user.role.lastPaymentAt);
            const subscribedUntil = new Date(subscribedAt.getTime() + 31 * 24 * 60 * 60 * 1000);
            setSubscribedUntil(subscribedUntil);
            if (user.role.subscriptionExpiredAt) {
                const expiredAt = new Date(user.role.subscriptionExpiredAt)
                setSubscriptionExpiredAt(expiredAt);
            }
        }
    }, [user]);

    const handleSubscriptionSuccess = async (response) => {
        setIsProcessing(true);
        try {
            const apiResponse = await axios.put('/api/users/subscription', {
                userId: session.user.id,
                isSubscribed: true,
            });
            if (apiResponse.data) {
                await update();
                showToast('success', 'Subscription Successful', 'Your subscription has been activated.');
            } else {
                throw new Error('Failed to update subscription status');
            }
        } catch (error) {
            console.error('Subscription update error:', error);
            showToast('error', 'Subscription Update Failed', `Error: ${error.message}`);
        } finally {
            setIsProcessing(false);
        }
    };

    const handleSubscriptionError = (error) => {
        console.error('Subscription error:', error);
        showToast('error', 'Subscription Failed', `An error occurred: ${error.message}`);
        setIsProcessing(false);
    };

    const handleRecurringSubscriptionSuccess = async () => {
        setIsProcessing(true);
        try {
            await update();
            showToast('success', 'Recurring Subscription Activated', 'Your recurring subscription has been set up successfully.');
        } catch (error) {
            console.error('Session update error:', error);
            showToast('error', 'Session Update Failed', `Error: ${error.message}`);
        } finally {
            setIsProcessing(false);
        }
    };

    const menuItems = [
        {
            label: "Schedule 1:1",
            icon: "pi pi-calendar",
            command: () => setCalendlyVisible(true),
        },
        {
            label: session?.user?.lightningAddress ? "Update PlebDevs Lightning Address" : "Claim PlebDevs Lightning Address",
            icon: "pi pi-bolt",
            command: () => setLightningAddressVisible(true),
        },
        {
            label: session?.user?.nip05 ? "Update PlebDevs Nostr NIP-05" : "Claim PlebDevs Nostr NIP-05",
            icon: "pi pi-at",
            command: () => setNip05Visible(true),
        },
        {
            label: "Renew Subscription",
            icon: "pi pi-sync",
            command: () => setRenewSubscriptionVisible(true),
        },
        {
            label: "Cancel Subscription",
            icon: "pi pi-trash",
            command: () => setCancelSubscriptionVisible(true),
        },
    ];

    const subscriptionCardTitleAndButton = (
        <div className="w-full flex flex-row justify-between items-center">
            <span className="text-xl text-900 font-bold text-white">Plebdevs Subscription</span>
            <i
                className="pi pi-ellipsis-h text-2xlcursor-pointer hover:opacity-75"
                onClick={(e) => menu.current.toggle(e)}
            ></i>
            <Menu model={menuItems} popup ref={menu} />
        </div>
    );

    const subscriptionCardTitle = (
        <div className="w-full flex flex-row justify-between items-center">
            <span className="text-xl text-900 font-bold text-white">Plebdevs Subscription</span>
        </div>
    );

    return (
        <div className="p-4">
            {windowWidth < 768 && (
                <h1 className="text-3xl font-bold mb-6">Subscription Management</h1>
            )}
            <div className="mb-4 p-4 bg-gray-800 rounded-lg w-fit">
                {session && session?.user ? (
                    <>
                        {subscribed && (
                            <div className="flex flex-col">
                                <Message className="w-fit" severity="success" text="Subscribed!" />
                                <p className="mt-4">Thank you for your support 🎉</p>
                                <p className="text-sm text-gray-400">Pay-as-you-go subscription will renew on {subscribedUntil.toLocaleDateString()}</p>
                            </div>
                        )}
                        {(!subscribed && !subscriptionExpiredAt) && (
                            <div className="flex flex-col">
                                <Message className="w-fit" severity="info" text="You currently have no active subscription" />
                            </div>
                        )}
                        {subscriptionExpiredAt && (
                            <div className="flex flex-col">
                                <Message className="w-fit" severity="warn" text={`Your subscription expired on ${subscriptionExpiredAt.toLocaleDateString()}`} />
                            </div>
                        )}
                    </>
                ) : (
                    <div className="flex flex-col">
                        <Message className="w-fit" severity="info" text="Login to manage your subscription" />
                    </div>
                )}
            </div>

            {!session?.user && (
                <>
                    <Card title="Start Your PlebDevs Journey" className="mb-6">
                        <p className='mb-4 text-xl'>
                            The PlebDevs subscription unlocks all paid content, grants access to our 1:1 calendar for tutoring, support, and mentorship, and grants you your own personal plebdevs.com Lightning Address and Nostr NIP-05 identity.
                        </p>
                        <p className='text-xl mb-4'>
                            Subscribe monthly with a pay-as-you-go option or set up an auto-recurring subscription using Nostr Wallet Connect.
                        </p>
                    </Card>
                    <Card title="Ready to level up?" className="mb-4">
                        <p className='text-xl pb-4'>Login to start your subscription!</p>
                        <GenericButton label="Login" onClick={() => router.push('/auth/signin')} className='text-[#f8f8ff] w-fit' rounded icon="pi pi-user" />
                    </Card>
                </>
            )}

            <Card title="Subscribe to PlebDevs" className="mb-4">
                {isProcessing ? (
                    <div className="w-full flex flex-col mx-auto justify-center items-center mt-4">
                        <div className='w-full h-full flex items-center justify-center'><ProgressSpinner /></div>
                        <span className="ml-2">Processing subscription...</span>
                    </div>
                ) : (
                    <div className="flex flex-col">
                        <div className="mb-4">
                            <h2 className="text-2xl font-bold text-primary">Unlock Premium Benefits</h2>
                            <p className="text-gray-400">Subscribe now and elevate your development journey!</p>
                        </div>
                        <div className="flex flex-col gap-4 mb-4">
                            <div className="flex items-center">
                                <i className="pi pi-book text-2xl text-primary mr-2 text-blue-400"></i>
                                <span>Access ALL current and future PlebDevs content</span>
                            </div>
                            <div className="flex items-center">
                                <i className="pi pi-calendar text-2xl text-primary mr-2 text-red-400"></i>
                                <span>Personal mentorship & guidance and access to exclusive 1:1 booking calendar</span>
                            </div>
                            <div className="flex items-center">
                                <i className="pi pi-bolt text-2xl text-primary mr-2 text-yellow-500"></i>
                                <span>Claim your own personal plebdevs.com Lightning Address</span>
                            </div>
                            <div className="flex items-center">
                                <Image src={NostrIcon} alt="Nostr" width={25} height={25} className='mr-2' />
                                <span>Claim your own personal plebdevs.com Nostr NIP-05 identity</span>
                            </div>
                            <div className="flex items-center">
                                <i className="pi pi-star text-2xl text-primary mr-2 text-yellow-500"></i>
                                <span>I WILL MAKE SURE YOU WIN HARD AND LEVEL UP AS A DEV!</span>
                            </div>
                        </div>
                        <SubscriptionPaymentButtons
                            onSuccess={handleSubscriptionSuccess}
                            onRecurringSubscriptionSuccess={handleRecurringSubscriptionSuccess}
                            onError={handleSubscriptionError}
                            setIsProcessing={setIsProcessing}
                            layout={windowWidth < 768 ? "col" : "row"}
                        />
                    </div>
                )}
            </Card>

            {session?.user && subscribed && (
                <>
                    <Card title="Subscription Benefits" className="mb-4">
                        <div className="flex flex-col gap-4">
                            <GenericButton severity="info" outlined className="w-fit text-start" label="Schedule 1:1" icon="pi pi-calendar" onClick={() => setCalendlyVisible(true)} />
                            <GenericButton severity="help" outlined className="w-fit text-start" label={session?.user?.nip05 ? "Update Nostr NIP-05" : "Claim PlebDevs Nostr NIP-05"} icon="pi pi-at" onClick={() => setNip05Visible(true)} />
                            <GenericButton severity="warning" outlined className="w-fit text-start" label={session?.user?.lightningAddress ? "Update Lightning Address" : "Claim PlebDevs Lightning Address"} icon={<i style={{ color: "orange" }} className="pi pi-bolt mr-2"></i>} onClick={() => setLightningAddressVisible(true)} />
                        </div>
                    </Card>
                    <Card title="Manage Subscription" className="mb-4">
                        <div className='flex flex-col gap-4'>
                            <GenericButton outlined className="w-fit" label="Renew Subscription" icon="pi pi-sync" onClick={() => setRenewSubscriptionVisible(true)} />
                            <GenericButton severity="danger" outlined className="w-fit" label="Cancel Subscription" icon="pi pi-trash" onClick={() => setCancelSubscriptionVisible(true)} />
                        </div>
                    </Card>
                </>
            )}

            <Card title="Frequently Asked Questions" className="mb-6">
                <div className="flex flex-col gap-4">
                    <div>
                        <h3 className="text-lg font-semibold">How does the subscription work?</h3>
                        <p>Think of the subscriptions as a Patreon-type model. You pay a monthly fee and in return you get access to premium features and all of the paid content. You can cancel at any time.</p>
                    </div>
                    <div>
                        <h3 className="text-lg font-semibold">How do I Subscribe? (Pay as you go)</h3>
                        <p>The pay as you go subscription is a one-time payment that gives you access to all of the premium features for one month. You will need to manually renew your subscription every month.</p>
                    </div>
                    <div>
                        <h3 className="text-lg font-semibold">How do I Subscribe? (Recurring)</h3>
                        <p>The recurring subscription option allows you to submit a Nostr Wallet Connect URI that will be used to automatically send the subscription fee every month. You can cancel at any time.</p>
                    </div>
                    <div>
                        <h3 className="text-lg font-semibold">Can I cancel my subscription?</h3>
                        <p>Yes, you can cancel your subscription at any time. Your access will remain active until the end of the current billing period.</p>
                    </div>
                    <div>
                        <h3 className="text-lg font-semibold">What happens if I don&apos;t renew my subscription?</h3>
                        <p>If you don&apos;t renew your subscription, your access to 1:1 calendar and paid content will be removed. However, you will still have access to your PlebDevs Lightning Address, NIP-05, and any content that you paid for.</p>
                    </div>
                </div>
            </Card>

            <CalendlyEmbed
                visible={calendlyVisible}
                onHide={() => setCalendlyVisible(false)}
            />
            <CancelSubscription
                visible={cancelSubscriptionVisible}
                onHide={() => setCancelSubscriptionVisible(false)}
            />
            <RenewSubscription
                visible={renewSubscriptionVisible}
                onHide={() => setRenewSubscriptionVisible(false)}
                subscribedUntil={subscribedUntil}
            />
            <Nip05Form
                visible={nip05Visible}
                onHide={() => setNip05Visible(false)}
            />
            <LightningAddressForm
                visible={lightningAddressVisible}
                onHide={() => setLightningAddressVisible(false)}
            />
        </div>
    );
};

export default Subscribe;