silverbullet/plugs/core/refactor.ts

import {
  editor,
  space,
} from "$sb/silverbullet-syscall/mod.ts";

export async function extractToPage() {
  const newName = await editor.prompt(`New page title:`, 'new page');
  if (!newName) {
    return;
  }

  console.log("New name", newName);

  try {
    // This throws an error if the page does not exist, which we expect to be the case
    await space.getPageMeta(newName);
    // So when we get to this point, we error out
    throw new Error(
      `Page ${newName} already exists, cannot rename to existing page.`,
    );
  } catch (e: any) {
    if (e.message.includes("not found")) {
      // Expected not found error, so we can continue
    } else {
      await editor.flashNotification(e.message, "error");
      throw e;
    }
  }
  let text = await editor.getText();
  const selection = await editor.getSelection();
  text = text.slice(selection.from, selection.to);
  await editor.replaceRange(selection.from, selection.to, `[[${newName}]]`);
  console.log("Writing new page to space");
  await space.writePage(newName, text);
  console.log("Navigating to new page");
  await editor.navigate(newName);
}