coldsky/package/data/capture-records/capture-like-record.js

Library and the app for BlueSky

// @ts-check

import { shortenDID } from '../../shorten';
import { createRepoData } from '../repo-data';
import { createSpeculativePost } from './speculative-post';

/**
 * @param {string} repo
 * @param {import('../..').RepositoryRecordTypes$['app.bsky.feed.like']} likeRecord
 * @param {Map<string, import('../store-data').RepositoryData>} store
 * @param {import('../define-store').Intercepts} [intercepts]
 */
export function captureLikeRecord(repo, likeRecord, store, intercepts) {
  const shortDID = shortenDID(repo);

  let repoData = store.get(shortDID);
  if (!repoData)
    store.set(shortDID, repoData = createRepoData(shortDID));

  const existingPost = repoData.posts.get(likeRecord.subject.uri);
  if (existingPost) {
    if (existingPost.likedBy) {
      if (!existingPost.likedBy.includes(shortDID)) {
        let lastPlaceholderLike = existingPost.likedBy.length;
        while (lastPlaceholderLike > 0 && existingPost.likedBy[lastPlaceholderLike - 1] === '?')
          lastPlaceholderLike--;
        existingPost.likedBy[lastPlaceholderLike] = shortDID;
      }
    } else {
      existingPost.likedBy = [shortDID];
    }
    intercepts?.post?.(existingPost);
    return existingPost;
  } else {
    const speculativePost = createSpeculativePost(shortDID, likeRecord.subject.uri);
    speculativePost.likedBy = [shortDID];
    repoData.posts.set(likeRecord.subject.uri, speculativePost);
    intercepts?.post?.(speculativePost);
    return speculativePost;
  }
}