gatsby-source-wordpress/dist/steps/preview/cleanup.js

Source data from WordPress in an efficient and scalable way.

"use strict";

exports.__esModule = true;
exports.onPreExtractQueriesInvokeLeftoverPreviewCallbacks = exports.invokeAndCleanupLeftoverPreviewCallbacks = void 0;
var _ = require(".");
var _store = require("../../store");
/**
 * This callback is invoked to send WP the preview status. In this case the status
 * is that we couldn't find a page for the node being previewed
 */
const invokeLeftoverPreviewCallback = ({
  getNode,
  status,
  context,
  error
}) => async ([nodeId, callback]) => {
  const passedNode = getNode(nodeId);
  await callback({
    passedNode,
    nodeId,
    // we pass null as the path because no page was created for this node.
    // if it had been, this callback would've been removed earlier in the process
    pageNode: {
      path: null
    },
    status,
    context,
    error
  });
};
const invokeAndCleanupLeftoverPreviewCallbacks = async ({
  status,
  context,
  error
}) => {
  const state = (0, _store.getStore)().getState();
  const {
    getNode
  } = state.gatsbyApi.helpers;
  const leftoverCallbacks = state.previewStore.nodePageCreatedCallbacks;
  const leftoverCallbacksExist = Object.keys(leftoverCallbacks).length;
  if (leftoverCallbacksExist) {
    await Promise.all(Object.entries(leftoverCallbacks).map(invokeLeftoverPreviewCallback({
      getNode,
      status,
      context,
      error
    })));

    // after processing our callbacks, we need to remove them all so they don't get called again in the future
    (0, _store.getStore)().dispatch.previewStore.clearPreviewCallbacks();
  }
};

/**
 * Preview callbacks are usually invoked during onCreatePage in Gatsby Preview
 * so that we can send back the preview status of a created page to WP
 * In the case that no page is created for the node we're previewing, we'll
 * have callbacks hanging around and WP will not know the status of the preview
 * So in onPreExtractQueries (which runs after pages are created), we check which
 * preview callbacks haven't been invoked, and invoke them with a "NO_PAGE_CREATED_FOR_PREVIEWED_NODE" status, which sends that status to WP
 * After invoking all these leftovers, we clear them out from the store so they aren't called again later.
 */
exports.invokeAndCleanupLeftoverPreviewCallbacks = invokeAndCleanupLeftoverPreviewCallbacks;
const onPreExtractQueriesInvokeLeftoverPreviewCallbacks = async () => {
  if (!(0, _.inPreviewMode)()) {
    return invokeAndCleanupLeftoverPreviewCallbacks({
      status: `GATSBY_PREVIEW_PROCESS_ERROR`,
      context: `Gatsby is not in Preview mode.`
    });
  }

  // check for any onCreatePageCallbacks that weren't called during createPages
  // we need to tell WP that a page wasn't created for the preview
  return invokeAndCleanupLeftoverPreviewCallbacks({
    status: `NO_PAGE_CREATED_FOR_PREVIEWED_NODE`,
    context: `invokeAndCleanupLeftoverPreviewCallbacks`
  });
};
exports.onPreExtractQueriesInvokeLeftoverPreviewCallbacks = onPreExtractQueriesInvokeLeftoverPreviewCallbacks;
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