From 8fcc7741d2c2975f866e12a045cb42f2220babf5 Mon Sep 17 00:00:00 2001
From: Tristan Sokol <tristansokol@users.noreply.github.com>
Date: Thu, 5 Jan 2023 08:37:08 -0600
Subject: [PATCH] Fixes #210

Add in new refactor file and extract to page command

Co-authored-by: Tristan Sokol <tristan@rightfoot.com>
---
 plugs/core/core.plug.yaml |  8 +++++++-
 plugs/core/refactor.ts    | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 plugs/core/refactor.ts

diff --git a/plugs/core/core.plug.yaml b/plugs/core/core.plug.yaml
index 70adedb..de5c677 100644
--- a/plugs/core/core.plug.yaml
+++ b/plugs/core/core.plug.yaml
@@ -21,7 +21,7 @@ functions:
   setEditorMode:
     path: "./editor.ts:setEditorMode"
     events:
-    - editor:init
+      - editor:init
   toggleVimMode:
     path: "./editor.ts:toggleVimMode"
     command:
@@ -331,6 +331,12 @@ functions:
       key: "Alt-m"
       wrapper: "=="
 
+  # Refactoring Commands
+  extractToPageCommand:
+    path: ./refactor.ts:extractToPage
+    command:
+      name: "Extract text to new page"
+
   # Plug manager
   updatePlugsCommand:
     path: ./plugmanager.ts:updatePlugsCommand
diff --git a/plugs/core/refactor.ts b/plugs/core/refactor.ts
new file mode 100644
index 0000000..099fb43
--- /dev/null
+++ b/plugs/core/refactor.ts
@@ -0,0 +1,37 @@
+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);
+}