import {Event, nip19} from  'nostr-tools';
import {Children, elem, elemArticle, parseTextContent} from './utils/dom';
import {dateTime, formatTime} from './utils/time';
import {/*validatePow,*/ sortByCreatedAt} from './events';
import {getViewElem, getViewOptions, setViewElem} from './view';
import {config} from './settings';
import {getReactions, getReactionContents} from './reactions';
import {openWriteInput} from './write';
// import {linkPreview} from './media';
import {parseJSON} from './media';
import {getMetadata} from './profiles';
import {EventWithNip19, replyList} from './notes';
import {isFollowing} from './contacts';

setInterval(() => {
  document.querySelectorAll('time[datetime]').forEach((timeElem: HTMLTimeElement) => {
    timeElem.textContent = formatTime(new Date(timeElem.dateTime));
  });
}, 10000);

export const createTextNote = (
  evt: EventWithNip19,
  relay: string,
) => {
  const {img, name, userName} = getMetadata(evt.pubkey);
  const replies = replyList.filter(({replyTo}) => replyTo === evt.id)
    .sort(sortByCreatedAt)
    .reverse();
  // const isLongContent = evt.content.trimRight().length > 280;
  // const content = isLongContent ? evt.content.slice(0, 280) : evt.content;
  const reactions = getReactions(evt.id);
  const didReact = reactions.length && !!reactions.find(reaction => reaction.pubkey === config.pubkey);
  const [content, {firstLink}] = parseTextContent(evt.content);
  const time = new Date(evt.created_at * 1000);
  const buttons = elem('div', {className: 'buttons'}, [
    elem('button', {name: 'reply', type: 'button'}, [
      elem('img', {height: 24, width: 24, src: '/assets/comment.svg'})
    ]),
    elem('button', {name: 'star', type: 'button'}, [
      elem('img', {
        alt: didReact ? '✭' : '✩', // ♥
        height: 24, width: 24,
        src: `/assets/${didReact ? 'star-fill' : 'star'}.svg`,
        title: getReactionContents(evt.id).join(' '),
      }),
      elem('small', {data: {reactions: ''}}, reactions.length || ''),
    ]),
  ]);
  if (localStorage.getItem('reply_to') === evt.id) {
    openWriteInput(buttons, evt.id);
  }
  const replyFeed: Array<HTMLElement> = replies[0] ? replies.map(e => setViewElem(e.id, createTextNote(e, relay))) : [];
  return elemArticle([
    elem('a', {className: 'mbox-img', href: `/${evt.nip19.npub}`, tabIndex: -1}, img),
    elem('div', {className: 'mbox-body'}, [
      elem('header', {
        className: 'mbox-header',
        title: `User: ${userName}\n${time}\n\nUser pubkey: ${evt.pubkey}\n\nRelay: ${relay}\n\nEvent-id: ${evt.id}
        ${evt.tags.length ? `\nTags ${JSON.stringify(evt.tags)}\n` : ''}
        ${evt.content}`
      }, [
        elem('a', {
          className: `mbox-username${name ? ' mbox-kind0-name' : ''}`,
          data: {profile: evt.pubkey},
          href: `/${evt.nip19.npub}`,
        }, name || userName),
        ' ',
        elem('a', {href: `/${evt.nip19.note}`}, elem('time', {dateTime: time.toISOString()}, formatTime(time))),
      ]),
      elem('div', {className: 'mbox-content'/* data: isLongContent ? {append: evt.content.slice(280)} : null*/}, content /*[
        ...content,
        (firstLink && validatePow(evt)) ? linkPreview(firstLink, evt.id, relay) : null,
      ]*/),
      buttons,
    ]),
    ...(replies[0] ? [elem('div', {className: 'mbox-replies'}, replyFeed)] : []),
  ], {
    className: replies.length ? 'mbox-has-replies' : '',
    data: {kind: evt.kind, id: evt.id, pubkey: evt.pubkey, relay}
  });
};

type EventWithContent = Omit<Event, 'content'> & {
  content: Children
}

export const renderUpdateContact = (
  evt: EventWithContent,
  relay: string,
) => {
  const {img, name, userName} = getMetadata(evt.pubkey);
  const time = new Date(evt.created_at * 1000);
  return elemArticle([
    elem('div', {className: 'mbox-img'}, img),
    elem('div', {className: 'mbox-body'}, [
      elem('header', {className: 'mbox-header'}, [
        elem('span', {
          className: `mbox-username${name ? ' mbox-kind0-name' : ''}`,
          data: {profile: evt.pubkey},
        }, name || userName),
        ' ',
        elem('span', {data: {contacts: evt.id}, title: time.toISOString()}, evt.content),
      ]),
    ]),
  ], {
      className: 'mbox-updated-contact',
      data: {kind: evt.kind, id: evt.id, pubkey: evt.pubkey, relay}
    }
  );
};

export const renderRecommendServer = (evt: Event, relay: string) => {
  const {img, userName} = getMetadata(evt.pubkey);
  const time = new Date(evt.created_at * 1000);
  const body = elem('div', {className: 'mbox-body', title: dateTime.format(time)}, [
    elem('header', {className: 'mbox-header'}, [
      elem('small', {}, [
        elem('strong', {}, userName)
      ]),
    ]),
    ` recommends server: ${evt.content}`,
  ]);
  return elemArticle([
    elem('div', {className: 'mbox-img'}, [img]), body
  ], {
    className: 'mbox-recommend-server',
    data: {kind: evt.kind, id: evt.id, pubkey: evt.pubkey}
  });
};

export const renderEventDetails = (evt: Event, relay: string) => {
  const {img, name, userName} = getMetadata(evt.pubkey);
  const npub = nip19.npubEncode(evt.pubkey);

  let content = (![1, 7].includes(evt.kind) && evt.content !== '') ? parseJSON(evt.content) : (evt.content || '<empty>');
  switch (typeof content) {
    case 'object':
      content = JSON.stringify(content, null, 2);
      break;
    default:
      content = `${content}`;
  }
  const body = elem('div', {className: 'mbox-body'}, [
    elem('header', {className: 'mbox-header'}, [
      elem('a', {
        className: `mbox-username${name ? ' mbox-kind0-name' : ''}`,
        data: {profile: evt.pubkey},
        href: `/${npub}`,
      }, name || userName),
    ]),
    elem('dl', {}, [
      elem('dt', {}, 'npub'),
      elem('dd', {}, npub),
      elem('dt', {}, 'created at'),
      elem('dd', {}, dateTime.format(evt.created_at * 1000)),
      elem('dt', {}, 'relay'),
      elem('dd', {}, relay),
    ]),
    elem('h2', {}, 'Event'),
    elem('dl', {}, [
      elem('dt', {}, 'id'),
      elem('dd', {}, evt.id),
      elem('dt', {}, 'kind'),
      elem('dd', {}, evt.kind),
      elem('dt', {}, 'pubkey'),
      elem('dd', {}, evt.pubkey),
      elem('dt', {}, 'tags count'),
      elem('dd', {}, evt.tags.length),
      elem('dt', {}, 'tags'),
      elem('dd', {}, JSON.stringify(evt.tags)),
      elem('dt', {}, 'content'),
      elem('dd', {}, elem('pre', {}, content as string)),
    ]),
  ]);
  return elemArticle([
    elem('a', {className: 'mbox-img', href: `/${npub}`, tabIndex: -1}, img),
    body,
  ], {
    className: 'mbox-plain-event',
    data: {kind: evt.kind, id: evt.id, pubkey: evt.pubkey}
  });
};

export const createContact = (pubkey: string) => {
  const {about: aboutContent, img, name, userName} = getMetadata(pubkey);
  const npub = nip19.npubEncode(pubkey);
  const view = getViewOptions();
  if (view.type !== 'contacts') {
    return null;
  }
  const isMe = config.pubkey === pubkey;
  const isCurrentUser = view.id === pubkey;
  const hasContact = isFollowing(pubkey);
  const followStatus = elem('small');
  const followBtn = elem('button', {
      className: hasContact ? 'secondary' : 'primary',
      ...(isMe && {disabled: true}),
      name: 'follow',
      data: {id: pubkey}
    }, hasContact ? (isMe ? 'following' : 'unfollow') : 'follow');
  const about = elem('div', {className: 'mbox-content'}, aboutContent);
  setViewElem(`about-${pubkey}`, about);
  setViewElem(`followStatus-${pubkey}`, followStatus);
  setViewElem(`followBtn-${pubkey}`, followBtn);
  return elemArticle([
    elem('a', {className: 'mbox-img', href: `/${npub}`, tabIndex: -1}, img),
    elem('div', {className: 'mbox-body'}, [
      elem('header', {className: 'mbox-header'}, [
        elem('a', {
          className: `mbox-username${name ? ' mbox-kind0-name' : ''}`,
          data: {profile: pubkey},
          href: `/${npub}`,
        }, name || userName),
        (isMe || isCurrentUser)
          ? elem('small', {}, isMe ? '(your user)' : '(current user)')
           : null,
      ]),
      about,
    ]),
    elem('div', {className: 'mbox-cta'}, [followStatus, followBtn]),
  ], {
    className: 'mbox-contact',
    data: {pubkey},
  });
};