etherpad-lite/src/node/utils/ImportEtherpad.js

/**
 * 2014 John McLear (Etherpad Foundation / McLear Ltd)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS-IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var log4js = require('log4js');
const db = require("../db/DB");
const hooks = require('ep_etherpad-lite/static/js/pluginfw/hooks');

exports.setPadRaw = function(padId, records) {
  records = JSON.parse(records);

  Object.keys(records).forEach(async function(key) {
    let value = records[key];

    if (!value) {
      return;
    }

    let newKey;

    if (value.padIDs) {
      // Author data - rewrite author pad ids
      value.padIDs[padId] = 1;
      newKey = key;

      // Does this author already exist?
      let author = await db.get(key);

      if (author) {
        // Yes, add the padID to the author
        if (Object.prototype.toString.call(author) === '[object Array]') {
          author.padIDs.push(padId);
        }

        value = author;
      } else {
        // No, create a new array with the author info in
        value.padIDs = [ padId ];
      }
    } else {
      // Not author data, probably pad data
      // we can split it to look to see if it's pad data
      let oldPadId = key.split(":");

      // we know it's pad data
      if (oldPadId[0] === "pad") {
        // so set the new pad id for the author
        oldPadId[1] = padId;

        // and create the value
        newKey = oldPadId.join(":"); // create the new key
      }

      // is this a key that is supported through a plugin?
      // get content that has a different prefix IE comments:padId:foo
      // a plugin would return something likle ['comments', 'cakes']
      for (const prefix of await hooks.aCallAll('exportEtherpadAdditionalContent')) {
        if (prefix === oldPadId[0]) newKey = `${prefix}:${padId}`;
      }
    }

    // Write the value to the server
    await db.set(newKey, value);
  });
}