fix(websocket): Folllow the description making algorithm in Cosense

Author: takker99

websocket/__snapshots__/findMetadata.test.ts.snap

@@ -1,6 +1,5 @@
-import { getPageMetadataFromLines, getHelpfeels } from "./findMetadata.ts";
-import { assertEquals } from "@std/assert";
-import { assertSnapshot } from "@std/testing/snapshot";
+import { getHelpfeels, getPageMetadataFromLines } from "./findMetadata.ts";
+import { assertEquals } from "@std/assert/equals";
 
 // Test data for metadata extraction from a Scrapbox page
 // This sample includes various Scrapbox syntax elements:
@@ -38,8 +37,45 @@ Prepare thumbnail
 
 [https://scrapbox.io/files/65e7f4413bc95600258481fb.svg https://scrapbox.io/files/65e7f82e03949c0024a367d0.svg]`;
 
-// Test findMetadata function's ability to extract various metadata from a page
-Deno.test("findMetadata()", (t) => assertSnapshot(t, getPageMetadataFromLines(text)));
+Deno.test("getPageMetadataFromLines()", () => {
+  assertEquals(getPageMetadataFromLines(text), [
+    "test page",
+    [
+      "normal",
+      "link2",
+      "hashtag",
+    ],
+    [
+      "/help-en/external-link",
+    ],
+    [
+      "scrapbox",
+      "takker",
+    ],
+    "https://scrapbox.io/files/65f29c24974fd8002333b160.svg",
+    [
+      "[normal]link",
+      "but `this [link]` is not a link",
+      "`Links [link] and images [https://scrapbox.io/files/65f29c0c9045b5002522c8bb.svg] in code blocks should be ignored`",
+      "`? Need help with setup!!`",
+      "#hashtag is recommended",
+    ],
+    [
+      "65f29c24974fd8002333b160",
+      "65e7f82e03949c0024a367d0",
+      "65e7f4413bc95600258481fb",
+    ],
+    [
+      "Need help with setup!!",
+    ],
+    [
+      "Name\t[scrapbox.icon]",
+      "Address\tAdd [link2] here",
+      "Phone\tAdding # won't create a link",
+      "Strengths\tList about 3 items",
+    ],
+  ]);
+});
 
 // Test Helpfeel extraction (lines starting with "?")
 // These are used for collecting questions and help requests in Scrapbox

websocket/findMetadata.test.ts

@@ -21,24 +21,17 @@ import { parseYoutube } from "../parser/youtube.ts";
 export const getPageMetadataFromLines = (
   text: string,
 ): [
-  string[],
-  string[],
-  string[],
-  string | null,
-  string[],
-  string[],
-  string[],
+  title: string,
+  links: string[],
+  projectLinks: string[],
+  icons: string[],
+  image: string | null,
+  descriptions: string[],
+  files: string[],
+  helpfeels: string[],
+  infoboxDefinition: string[],
 ] => {
-  const blocks = parse(text, { hasTitle: true }).flatMap((block) => {
-    switch (block.type) {
-      case "codeBlock":
-      case "title":
-        return [];
-      case "line":
-      case "table":
-        return block;
-    }
-  });
+  const blocks = parse(text, { hasTitle: true });
 
   /** Map for detecting duplicate links while preserving link type information
    *
@@ -49,13 +42,15 @@ export const getPageMetadataFromLines = (
    * When the same page is referenced by both formats,
    * we prioritize the bracket link format in the final output
    */
+  let title = "";
   const linksLc = new Map<string, boolean>();
   const links = [] as string[];
   const projectLinksLc = new Set<string>();
   const projectLinks = [] as string[];
   const iconsLc = new Set<string>();
   const icons = [] as string[];
   let image: string | null = null;
+  const descriptions = [] as string[];
   const files = new Set<string>();
   const helpfeels = new Set<string>();
 
@@ -150,11 +145,31 @@ export const getPageMetadataFromLines = (
 
   for (const block of blocks) {
     switch (block.type) {
+      case "title": {
+        title = block.text;
+        continue;
+      }
       case "line":
+        if (descriptions.length < 5 && block.nodes.length > 0) {
+          descriptions.push(
+            block.nodes[0].type === "helpfeel" ||
+              block.nodes[0].type === "commandLine"
+              ? makeInlineCodeForDescription(block.nodes[0].raw)
+              : block.nodes.map((node) => node.raw).join("").trim().slice(
+                0,
+                200,
+              ),
+          );
+        }
         for (const node of block.nodes) {
           lookup(node);
         }
         continue;
+      case "codeBlock":
+        if (descriptions.length < 5) {
+          descriptions.push(makeInlineCodeForDescription(block.content));
+        }
+        continue;
       case "table": {
         for (const row of block.cells) {
           for (const nodes of row) {
@@ -176,16 +191,21 @@ export const getPageMetadataFromLines = (
   }
 
   return [
+    title,
     links,
     projectLinks,
     icons,
     image,
+    descriptions,
     [...files],
     [...helpfeels],
     infoboxDefinition,
   ];
 };
 
+const makeInlineCodeForDescription = (text: string): `\`${string}\`` =>
+  `\`${text.trim().replaceAll("`", "\\`").slice(0, 198)}\``;
+
 const cutId = (link: string): string => link.replace(/#[a-f\d]{24,32}$/, "");
 
 /** Extract Helpfeel entries from text

websocket/findMetadata.ts

@@ -1,7 +1,7 @@
 import { diffToChanges } from "./diffToChanges.ts";
 import type { Page } from "@cosense/types/rest";
 import type { Change } from "./change.ts";
-import { getPageMetadataFromLines, getHelpfeels } from "./findMetadata.ts";
+import { getHelpfeels, getPageMetadataFromLines } from "./findMetadata.ts";
 import { isSameArray } from "./isSameArray.ts";
 import { isString } from "@core/unknownutil/is/string";
 
@@ -22,22 +22,6 @@ export function* makeChanges(
     yield change;
   }
 
-  // Handle title changes
-  // Note: We always include title change commits for new pages (`persistent === false`)
-  // to ensure proper page initialization
-  if (before.lines[0].text !== after_[0] || !before.persistent) {
-    yield { title: after_[0] };
-  }
-
-  // Process changes in page descriptions
-  // Descriptions are the first 5 lines after the title (lines 1-5)
-  // These lines provide a summary or additional context for the page
-  const leftDescriptions = before.lines.slice(1, 6).map((line) => line.text);
-  const rightDescriptions = after_.slice(1, 6);
-  if (leftDescriptions.join("") !== rightDescriptions.join("")) {
-    yield { descriptions: rightDescriptions };
-  }
-
   // Process changes in various metadata
   // Metadata includes:
   // - links: References to other pages
@@ -48,18 +32,25 @@ export function* makeChanges(
   // - helpfeels: Questions or help requests (lines starting with "?")
   // - infoboxDefinition: Structured data definitions
   const [
+    title,
     links,
     projectLinks,
     icons,
     image,
+    descriptions,
     files,
     helpfeels,
     infoboxDefinition,
   ] = getPageMetadataFromLines(after_.join("\n"));
+  // Handle title changes
+  // Note: We always include title change commits for new pages (`persistent === false`)
+  // to ensure proper page initialization
+  if (before.title !== title || !before.persistent) yield { title };
   if (!isSameArray(before.links, links)) yield { links };
   if (!isSameArray(before.projectLinks, projectLinks)) yield { projectLinks };
   if (!isSameArray(before.icons, icons)) yield { icons };
   if (before.image !== image) yield { image };
+  if (!isSameArray(before.descriptions, descriptions)) yield { descriptions };
   if (!isSameArray(before.files, files)) yield { files };
   if (!isSameArray(getHelpfeels(before.lines), helpfeels)) yield { helpfeels };
   if (!isSameArray(before.infoboxDefinition, infoboxDefinition)) {