import React, { useState, useEffect, useCallback } from "react";
import axios from "axios";
import { InputText } from "primereact/inputtext";
import { InputNumber } from "primereact/inputnumber";
import { InputSwitch } from "primereact/inputswitch";
import { Button } from "primereact/button";
import { useRouter } from "next/router";
import { useNostr } from "@/hooks/useNostr";
import { useLocalStorageWithEffect } from "@/hooks/useLocalStorage";
import EditorHeader from "./Editor/EditorHeader";
import { useToast } from "@/hooks/useToast";
import dynamic from 'next/dynamic';
const MDEditor = dynamic(
    () => import("@uiw/react-md-editor"),
    {
        ssr: false,
    }
);
import 'primeicons/primeicons.css';

const ResourceForm = ({ draft = null }) => {
    const [title, setTitle] = useState(draft?.title || '');
    const [summary, setSummary] = useState(draft?.summary || '');
    const [isPaidResource, setIsPaidResource] = useState(draft?.price ? true : false);
    const [price, setPrice] = useState(draft?.price || 0);
    const [coverImage, setCoverImage] = useState(draft?.image || '');
    const [topics, setTopics] = useState(draft?.topics || ['']);
    const [content, setContent] = useState(draft?.content || '');

    const [user] = useLocalStorageWithEffect('user', {});
    const { showToast } = useToast();
    const { publishAll } = useNostr();
    const router = useRouter();

    const handleContentChange = useCallback((value) => {
        setContent(value || '');
    }, []);

    useEffect(() => {
        if (draft) {
            setTitle(draft.title);
            setSummary(draft.summary);
            setIsPaidResource(draft.price ? true : false);
            setPrice(draft.price || 0);
            setText(draft.content);
            setCoverImage(draft.image);
            setTopics(draft.topics || []);
        }
    }, [draft]);

    const handleSubmit = async (e) => {
        e.preventDefault();

        const userResponse = await axios.get(`/api/users/${user.pubkey}`);

        if (!userResponse.data) {
            showToast('error', 'Error', 'User not found', 'Please try again.');
            return;
        }

        const payload = {
            title,
            summary,
            type: 'resource',
            price: isPaidResource ? price : null,
            content,
            image: coverImage,
            topics: [...topics.map(topic => topic.trim().toLowerCase()), 'plebdevs', 'resource']
        };

        if (!draft) {
            // Only include user when creating a new draft
            payload.user = userResponse.data.id;
        }

        if (payload) {
            const url = draft ? `/api/drafts/${draft.id}` : '/api/drafts';
            const method = draft ? 'put' : 'post';

            axios[method](url, payload)
                .then(response => {
                    if (response.status === 200 || response.status === 201) {
                        showToast('success', 'Success', draft ? 'Resource updated successfully.' : 'Resource saved as draft.');

                        if (response.data?.id) {
                            router.push(`/draft/${response.data.id}`);
                        }
                    }
                })
                .catch(error => {
                    console.error(error);
                    showToast('error', 'Error', 'Failed to save resource. Please try again.');
                });
        }
    };

    // const saveFreeResource = async (payload) => {
    //     const newresourceId = uuidv4();
    //     const event = {
    //         kind: 30023,
    //         content: payload.content,
    //         created_at: Math.floor(Date.now() / 1000),
    //         tags: [
    //             ['d', newresourceId],
    //             ['title', payload.title],
    //             ['summary', payload.summary],
    //             ['image', ''],
    //             ['t', ...topics],
    //             ['published_at', Math.floor(Date.now() / 1000).toString()],
    //         ]
    //     };

    //     const signedEvent = await window.nostr.signEvent(event);

    //     const eventVerification = await verifyEvent(signedEvent);

    //     if (!eventVerification) {
    //         showToast('error', 'Error', 'Event verification failed. Please try again.');
    //         return;
    //     }

    //     const nAddress = nip19.naddrEncode({
    //         pubkey: signedEvent.pubkey,
    //         kind: signedEvent.kind,
    //         identifier: newresourceId,
    //     })

    //     console.log('nAddress:', nAddress);

    //     const userResponse = await axios.get(`/api/users/${user.pubkey}`)

    //     if (!userResponse.data) {
    //         showToast('error', 'Error', 'User not found', 'Please try again.');
    //         return;
    //     }

    //     const resourcePayload = {
    //         id: newresourceId,
    //         userId: userResponse.data.id,
    //         price: 0,
    //         noteId: nAddress,
    //     }
    //     const response = await axios.post(`/api/resources`, resourcePayload);

    //     console.log('response:', response);

    //     if (response.status !== 201) {
    //         showToast('error', 'Error', 'Failed to create resource. Please try again.');
    //         return;
    //     }

    //     const publishResponse = await publishAll(signedEvent);

    //     if (!publishResponse) {
    //         showToast('error', 'Error', 'Failed to publish resource. Please try again.');
    //         return;
    //     } else if (publishResponse?.failedRelays) {
    //         publishResponse?.failedRelays.map(relay => {
    //             showToast('warn', 'Warning', `Failed to publish to relay: ${relay}`);
    //         });
    //     }

    //     publishResponse?.successfulRelays.map(relay => {
    //         showToast('success', 'Success', `Published to relay: ${relay}`);
    //     })
    // }

    // // For images, whether included in the markdown content or not, clients SHOULD use image tags as described in NIP-58. This allows clients to display images in carousel format more easily.
    // const savePaidResource = async (payload) => {
    //     // encrypt the content with NEXT_PUBLIC_APP_PRIV_KEY to NEXT_PUBLIC_APP_PUBLIC_KEY
    //     const encryptedContent = await nip04.encrypt(process.env.NEXT_PUBLIC_APP_PRIV_KEY ,process.env.NEXT_PUBLIC_APP_PUBLIC_KEY, payload.content);
    //     const newresourceId = uuidv4();
    //     const event = {
    //         kind: 30402,
    //         content: encryptedContent,
    //         created_at: Math.floor(Date.now() / 1000),
    //         tags: [
    //             ['title', payload.title],
    //             ['summary', payload.summary],
    //             ['t', ...topics],
    //             ['image', ''],
    //             ['d', newresourceId],
    //             ['location', `https://plebdevs.com/resource/${newresourceId}`],
    //             ['published_at', Math.floor(Date.now() / 1000).toString()],
    //             ['price', payload.price]
    //         ]
    //     };

    //     const signedEvent = await window.nostr.signEvent(event);

    //     const eventVerification = await verifyEvent(signedEvent);

    //     if (!eventVerification) {
    //         showToast('error', 'Error', 'Event verification failed. Please try again.');
    //         return;
    //     }

    //     const nAddress = nip19.naddrEncode({
    //         pubkey: signedEvent.pubkey,
    //         kind: signedEvent.kind,
    //         identifier: newresourceId,
    //     })

    //     console.log('nAddress:', nAddress);

    //     const userResponse = await axios.get(`/api/users/${user.pubkey}`)

    //     if (!userResponse.data) {
    //         showToast('error', 'Error', 'User not found', 'Please try again.');
    //         return;
    //     }

    //     const resourcePayload = {
    //         id: newresourceId,
    //         userId: userResponse.data.id,
    //         price: payload.price || 0,
    //         noteId: nAddress,
    //     }
    //     const response = await axios.post(`/api/resources`, resourcePayload);

    //     if (response.status !== 201) {
    //         showToast('error', 'Error', 'Failed to create resource. Please try again.');
    //         return;
    //     }

    //     const publishResponse = await publishAll(signedEvent);

    //     if (!publishResponse) {
    //         showToast('error', 'Error', 'Failed to publish resource. Please try again.');
    //         return;
    //     } else if (publishResponse?.failedRelays) {
    //         publishResponse?.failedRelays.map(relay => {
    //             showToast('warn', 'Warning', `Failed to publish to relay: ${relay}`);
    //         });
    //     }

    //     publishResponse?.successfulRelays.map(relay => {
    //         showToast('success', 'Success', `Published to relay: ${relay}`);
    //     })
    // }

    const handleTopicChange = (index, value) => {
        const updatedTopics = topics.map((topic, i) => i === index ? value : topic);
        setTopics(updatedTopics);
    };

    const addTopic = (e) => {
        e.preventDefault();
        setTopics([...topics, '']); // Add an empty string to the topics array
    };

    const removeTopic = (e, index) => {
        e.preventDefault();
        const updatedTopics = topics.filter((_, i) => i !== index);
        setTopics(updatedTopics);
    };

    // Define custom toolbar for the editor
    const customToolbar = (
        <div id="toolbar">
            {/* Include existing toolbar items */}
            <span className="ql-formats">
                <select className="ql-header" defaultValue="">
                    <option value="1">Heading</option>
                    <option value="2">Subheading</option>
                    <option value="">Normal</option>
                </select>
            </span>
            <span className="ql-formats">
                <button className="ql-bold"></button>
                <button className="ql-italic"></button>
                <button className="ql-underline"></button>
            </span>
            <span className="ql-formats">
                <button className="ql-list" value="ordered"></button>
                <button className="ql-list" value="bullet"></button>
                <button className="ql-indent" value="-1"></button>
                <button className="ql-indent" value="+1"></button>
            </span>
            <span className="ql-formats">
                <button className="ql-link"></button>
                <button className="ql-image"></button>
                <button className="ql-video"></button> {/* This is your custom video button */}
            </span>
            <span className="ql-formats">
                <button className="ql-clean"></button>
            </span>
        </div>
    );

    return (
        <form onSubmit={handleSubmit}>
            <div className="p-inputgroup flex-1">
                <InputText value={title} onChange={(e) => setTitle(e.target.value)} placeholder="Title" />
            </div>
            <div className="p-inputgroup flex-1 mt-4">
                <InputText value={summary} onChange={(e) => setSummary(e.target.value)} placeholder="Summary" />
            </div>
            <div className="p-inputgroup flex-1 mt-4">
                <InputText value={coverImage} onChange={(e) => setCoverImage(e.target.value)} placeholder="Cover Image URL" />
            </div>

            <div className="p-inputgroup flex-1 mt-8 flex-col">
                <p className="py-2">Paid Resource</p>
                <InputSwitch checked={isPaidResource} onChange={(e) => setIsPaidResource(e.value)} />
                {isPaidResource && (
                    <div className="p-inputgroup flex-1 py-4">
                        <InputNumber value={price} onValueChange={(e) => setPrice(e.value)} placeholder="Price (sats)" />
                    </div>
                )}
            </div>
            <div className="p-inputgroup flex-1 flex-col mt-4">
                <span>Content</span>
                <div data-color-mode="dark">
                    <MDEditor
                        value={content}
                        onChange={handleContentChange}
                        height={350}
                    />
                </div>
            </div>
            <div className="mt-8 flex-col w-full">
                {topics.map((topic, index) => (
                    <div className="p-inputgroup flex-1" key={index}>
                        <InputText value={topic} onChange={(e) => handleTopicChange(index, e.target.value)} placeholder="Topic" className="w-full mt-2" />
                        {index > 0 && (
                            <Button icon="pi pi-times" className="p-button-danger mt-2" onClick={(e) => removeTopic(e, index)} />
                        )}
                    </div>
                ))}
                <div className="w-full flex flex-row items-end justify-end py-2">
                    <Button icon="pi pi-plus" onClick={addTopic} />
                </div>
            </div>
            <div className="flex justify-center mt-8">
                <Button type="submit" severity="success" outlined label={draft ? "Update" : "Submit"} />
            </div>
        </form>
    );
}

export default ResourceForm;