From 39d3a8c44670da23a411425124723e0a17ad0740 Mon Sep 17 00:00:00 2001
From: hyrijk <hyrijk@gmail.com>
Date: Sun, 10 Oct 2021 23:35:58 +0800
Subject: [PATCH] feat: add reference check #1

---
 index.ts     | 11 ++++++++---
 package.json |  2 +-
 util.ts      | 19 ++++++++++++++++---
 3 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/index.ts b/index.ts
index dc72a6d..e62fff3 100644
--- a/index.ts
+++ b/index.ts
@@ -1,6 +1,6 @@
 import "@logseq/libs";
 import { BlockEntity, BlockIdentity } from "@logseq/libs/dist/LSPlugin.user";
-import { toBatchBlocks } from "./util";
+import { toBatchBlocks, mayBeReferenced } from "./util";
 
 async function main(blockId: string) {
   const block = await logseq.Editor.getBlock(blockId, {
@@ -9,6 +9,11 @@ async function main(blockId: string) {
   if (block === null || block.children?.length === 0) {
     return;
   }
+  if (mayBeReferenced(block.children as BlockEntity[])) {
+    // https://github.com/hyrijk/logseq-plugin-block-to-page/issues/1
+    logseq.App.showMsg("some sub block may be referenced", "error");
+    return;
+  }
 
   const pageRegx = /^\[\[(.*)\]\]$/;
   const firstLine = block.content.split("\n")[0].trim();
@@ -25,7 +30,7 @@ async function main(blockId: string) {
   if (srcBlock) {
     // page.format 为空
     if (srcBlock.format !== block.format) {
-      logseq.App.showMsg("page format not same", "warning");
+      logseq.App.showMsg("page format not same", "error");
       return Promise.reject("page format not same");
     }
 
@@ -44,7 +49,7 @@ async function main(blockId: string) {
 
     await logseq.Editor.exitEditingMode();
 
-    if (block.properties.collapsed) {
+    if (block.properties?.collapsed) {
       await logseq.Editor.removeBlockProperty(block.uuid, "collapsed");
     }
   }
diff --git a/package.json b/package.json
index 77ff4fb..c0801ca 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "logseq-plugin-block-to-page",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "turn block into page",
   "main": "dist/index.html",
   "scripts": {
diff --git a/util.ts b/util.ts
index 8dcf127..e260a89 100644
--- a/util.ts
+++ b/util.ts
@@ -1,8 +1,7 @@
 import { BlockEntity } from "@logseq/libs/dist/LSPlugin.user";
 
-function hasProperties(block: BlockEntity) {
-  const properties = block.meta?.properties || {};
-  return Object.keys(properties).length > 0;
+function hasProperty(block: BlockEntity, propertyKey: string): boolean {
+  return block.properties?.[propertyKey] !== undefined;
 }
 
 export function toBatchBlocks(blocks: BlockEntity[]) {
@@ -15,3 +14,17 @@ export function toBatchBlocks(blocks: BlockEntity[]) {
     properties: c.properties,
   }));
 }
+
+export function mayBeReferenced(blocks: BlockEntity[]) {
+  return blocks.some((b) => {
+    if (hasProperty(b, "id")) {
+      return true;
+    } else {
+      if (b.children) {
+        return mayBeReferenced(b.children as BlockEntity[]);
+      } else {
+        return false;
+      }
+    }
+  });
+}