import React, { useEffect, useState } from 'react';
import { Tag } from 'primereact/tag';
import { Message } from 'primereact/message';
import GenericButton from '@/components/buttons/GenericButton';
import Image from 'next/image';
import { useImageProxy } from '@/hooks/useImageProxy';
import { formatDateTime, formatUnixTimestamp } from '@/utils/time';
import { useRouter } from 'next/router';
import dynamic from 'next/dynamic';

const MDDisplay = dynamic(() => import('@uiw/react-markdown-preview'), {
  ssr: false,
});

const DraftCourseLesson = ({ lesson, course }) => {
  const [isPublished, setIsPublished] = useState(false);

  const router = useRouter();
  const { returnImageProxy } = useImageProxy();

  useEffect(() => {
    if (lesson?.kind) {
      setIsPublished(true);
    } else {
      setIsPublished(false);
    }
  }, [lesson]);

  return (
    <div className="w-full px-24 pt-12 mx-auto mt-4 max-tab:px-0 max-mob:px-0 max-tab:pt-2 max-mob:pt-2">
      <div className="w-full flex flex-row justify-between max-tab:flex-col max-mob:flex-col">
        <div className="w-[75vw] mx-auto flex flex-row items-start justify-between max-tab:flex-col max-mob:flex-col max-tab:w-[95vw] max-mob:w-[95vw]">
          <div className="flex flex-col items-start max-w-[45vw] max-tab:max-w-[100vw] max-mob:max-w-[100vw]">
            <div className="pt-2 flex flex-row justify-start w-full">
              {lesson &&
                lesson.topics &&
                lesson.topics.length > 0 &&
                lesson.topics.map((topic, index) => (
                  <Tag className="mr-2 text-white" key={index} value={topic}></Tag>
                ))}
            </div>
            <h1 className="text-4xl mt-6">{lesson?.title}</h1>
            <p className="text-xl mt-6">
              {lesson?.summary && (
                <div className="text-xl mt-4">
                  {lesson.summary.split('\n').map((line, index) => (
                    <p key={index}>{line}</p>
                  ))}
                </div>
              )}
            </p>
            {lesson?.additionalLinks && lesson.additionalLinks.length > 0 && (
              <div className="mt-6">
                <h3 className="text-lg font-semibold mb-2">External links:</h3>
                <ul className="list-disc list-inside">
                  {lesson.additionalLinks.map((link, index) => (
                    <li key={index}>
                      <a
                        href={link}
                        target="_blank"
                        rel="noopener noreferrer"
                        className="text-blue-500 hover:underline"
                      >
                        {new URL(link).hostname}
                      </a>
                    </li>
                  ))}
                </ul>
              </div>
            )}
            {lesson?.price && <p className="text-lg mt-6">Price: {lesson.price} sats</p>}
            <div className="flex flex-row w-full mt-6 items-center">
              <Image
                alt="avatar thumbnail"
                src={returnImageProxy(lesson.author?.avatar, lesson.author?.pubkey)}
                width={50}
                height={50}
                className="rounded-full mr-4"
              />
              <p className="text-lg">
                Created by{' '}
                <a
                  rel="noreferrer noopener"
                  target="_blank"
                  className="text-blue-500 hover:underline"
                >
                  {lesson.author?.username || lesson.author?.pubkey}
                </a>
              </p>
            </div>
            {lesson?.createdAt ? (
              <p className="pt-8 text-sm text-gray-400">{formatDateTime(lesson?.createdAt)}</p>
            ) : (
              <p className="pt-8 text-sm text-gray-400">
                {formatUnixTimestamp(lesson?.published_at)}
              </p>
            )}
            <div className="flex flex-row w-full mt-6 items-center">
              {isPublished ? (
                <>
                  <Message severity="success" text="published" className="w-auto m-2" />
                  <GenericButton
                    onClick={() => router.push(`/details/${lesson.id}`)}
                    label="View"
                    outlined
                    className="w-auto m-2"
                  />
                  <GenericButton
                    onClick={() => router.push(`/details/${lesson.id}/edit`)}
                    label="Edit"
                    severity="warning"
                    outlined
                    className="w-auto m-2"
                  />
                </>
              ) : (
                <>
                  <Message severity="info" text="draft (unpublished)" />
                  <GenericButton
                    onClick={() => router.push(`/draft/${lesson.id}`)}
                    label="View"
                    outlined
                    className="w-auto m-2"
                  />
                  <GenericButton
                    onClick={() => router.push(`/draft/${lesson.id}/edit`)}
                    label="Edit"
                    severity="warning"
                    outlined
                    className="w-auto m-2"
                  />
                </>
              )}
            </div>
          </div>
          <div className="flex flex-col max-tab:mt-12 max-mob:mt-12">
            {lesson && (
              <div className="flex flex-col items-center justify-between rounded-lg h-72 p-4 bg-gray-700 drop-shadow-md">
                <Image
                  alt="course thumbnail"
                  src={returnImageProxy(lesson.image)}
                  width={344}
                  height={194}
                  className="w-[344px] h-full object-cover object-top rounded-lg"
                />
              </div>
            )}
          </div>
        </div>
      </div>
      <div className="w-[75vw] mx-auto mt-12 p-12 border-t-2 border-gray-300 max-tab:p-0 max-mob:p-0 max-tab:max-w-[100vw] max-mob:max-w-[100vw]">
        {lesson?.content && <MDDisplay className="p-4 rounded-lg" source={lesson.content} />}
      </div>
    </div>
  );
};

export default DraftCourseLesson;