overleaf/services/document-updater/app/js/SnapshotManager.js

/* eslint-disable
    camelcase,
    no-return-assign,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS101: Remove unnecessary use of Array.from
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
let SnapshotManager;
const {db, ObjectId} = require("./mongojs");

module.exports = (SnapshotManager = {
  recordSnapshot(project_id, doc_id, version, pathname, lines, ranges, callback) {
    try {
      project_id = ObjectId(project_id);
      doc_id = ObjectId(doc_id);
    } catch (error) {
      return callback(error);
    }
    return db.docSnapshots.insert({
      project_id, doc_id, version, lines, pathname,
      ranges: SnapshotManager.jsonRangesToMongo(ranges),
      ts: new Date()
    }, callback);
  },
    // Suggested indexes:
    //   db.docSnapshots.createIndex({project_id:1, doc_id:1})
    //   db.docSnapshots.createIndex({ts:1},{expiresAfterSeconds: 30*24*3600)) # expires after 30 days

  jsonRangesToMongo(ranges) {
    if ((ranges == null)) { return null; }
    
    const updateMetadata = function(metadata) {
      if ((metadata != null ? metadata.ts : undefined) != null) {
        metadata.ts = new Date(metadata.ts);
      }
      if ((metadata != null ? metadata.user_id : undefined) != null) {
        return metadata.user_id = SnapshotManager._safeObjectId(metadata.user_id);
      }
    };
    
    for (const change of Array.from(ranges.changes || [])) {
      change.id = SnapshotManager._safeObjectId(change.id);
      updateMetadata(change.metadata);
    }
    for (const comment of Array.from(ranges.comments || [])) {
      comment.id = SnapshotManager._safeObjectId(comment.id);
      if ((comment.op != null ? comment.op.t : undefined) != null) {
        comment.op.t = SnapshotManager._safeObjectId(comment.op.t);
      }
      updateMetadata(comment.metadata);
    }
    return ranges;
  },

  _safeObjectId(data) {
    try {
      return ObjectId(data);
    } catch (error) {
      return data;
    }
  }
});