@wordpress/sync/build-module/manager.js

Sync Data.

// packages/sync/src/manager.ts
import * as Y from "yjs";
import {
  CRDT_RECORD_MAP_KEY as RECORD_KEY,
  LOCAL_SYNC_MANAGER_ORIGIN
} from "./config";
import { createPersistedCRDTDoc, getPersistedCrdtDoc } from "./persistence";
import { getProviderCreators } from "./providers";
import { createUndoManager } from "./undo-manager";
import { createYjsDoc } from "./utils";
function createSyncManager() {
  const entityStates = /* @__PURE__ */ new Map();
  const undoManager = createUndoManager();
  async function loadEntity(syncConfig, objectType, objectId, record, handlers) {
    const providerCreators = getProviderCreators();
    if (0 === providerCreators.length) {
      return;
    }
    const entityId = getEntityId(objectType, objectId);
    if (entityStates.has(entityId)) {
      return;
    }
    const ydoc = createYjsDoc({ objectType });
    const recordMap = ydoc.getMap(RECORD_KEY);
    const unload = () => {
      providerResults.forEach((result) => result.destroy());
      recordMap.unobserveDeep(onRecordUpdate);
      ydoc.destroy();
      entityStates.delete(entityId);
    };
    const onRecordUpdate = (_events, transaction) => {
      if (transaction.local && !(transaction.origin instanceof Y.UndoManager)) {
        return;
      }
      void updateEntityRecord(objectType, objectId);
    };
    undoManager.addToScope(recordMap);
    const entityState = {
      handlers,
      objectId,
      objectType,
      syncConfig,
      unload,
      ydoc
    };
    entityStates.set(entityId, entityState);
    const providerResults = await Promise.all(
      providerCreators.map(
        (create) => create(objectType, objectId, ydoc)
      )
    );
    recordMap.observeDeep(onRecordUpdate);
    const isInvalid = applyPersistedCrdtDoc(syncConfig, ydoc, record);
    if (isInvalid) {
      ydoc.transact(() => {
        syncConfig.applyChangesToCRDTDoc(ydoc, record);
      }, LOCAL_SYNC_MANAGER_ORIGIN);
      const meta = createEntityMeta(objectType, objectId);
      handlers.editRecord({ meta });
      handlers.saveRecord();
    }
  }
  function unloadEntity(objectType, objectId) {
    entityStates.get(getEntityId(objectType, objectId))?.unload();
  }
  function getEntityId(objectType, objectId) {
    return `${objectType}_${objectId}`;
  }
  function applyPersistedCrdtDoc(syncConfig, targetDoc, record) {
    if (!syncConfig.supports?.crdtPersistence) {
      return true;
    }
    const tempDoc = getPersistedCrdtDoc(record);
    if (!tempDoc) {
      return true;
    }
    const update = Y.encodeStateAsUpdateV2(tempDoc);
    targetDoc.transact(() => {
      Y.applyUpdateV2(targetDoc, update);
    }, LOCAL_SYNC_MANAGER_ORIGIN);
    const changes = syncConfig.getChangesFromCRDTDoc(tempDoc, record);
    tempDoc.destroy();
    return Object.keys(changes).length > 0;
  }
  function updateCRDTDoc(objectType, objectId, changes, origin) {
    const entityId = getEntityId(objectType, objectId);
    const entityState = entityStates.get(entityId);
    if (!entityState) {
      return;
    }
    const { syncConfig, ydoc } = entityState;
    ydoc.transact(() => {
      syncConfig.applyChangesToCRDTDoc(ydoc, changes);
    }, origin);
  }
  async function updateEntityRecord(objectType, objectId) {
    const entityId = getEntityId(objectType, objectId);
    const entityState = entityStates.get(entityId);
    if (!entityState) {
      return;
    }
    const { handlers, syncConfig, ydoc } = entityState;
    const changes = syncConfig.getChangesFromCRDTDoc(
      ydoc,
      await handlers.getEditedRecord()
    );
    if (0 === Object.keys(changes).length) {
      return;
    }
    handlers.editRecord(changes);
  }
  function createEntityMeta(objectType, objectId) {
    const entityId = getEntityId(objectType, objectId);
    const entityState = entityStates.get(entityId);
    if (!entityState?.syncConfig.supports?.crdtPersistence) {
      return {};
    }
    return createPersistedCRDTDoc(entityState.ydoc);
  }
  return {
    createMeta: createEntityMeta,
    load: loadEntity,
    undoManager,
    unload: unloadEntity,
    update: updateCRDTDoc
  };
}
export {
  createSyncManager
};
//# sourceMappingURL=manager.js.map