implement title trimming

README.md

@@ -29,13 +29,17 @@ Usage example:
     await mastodon.parseFeed({
         notesdir: `${__dirname}/content/notes`,
         url: "https://chat.brainbaking.com/users/wouter/feed",
-        utcOffset: 60
+        utcOffset: 60,
+        titleCount: 50,
+        titlePrefix: "Note: "
     })
 ```
 
 Default values: 
 
 - `utcOffset`: `60` (= GMT+1, that's where I am!) (in **minutes**, see [day.js docs](https://day.js.org/docs/en/manipulate/utc-offset)
+- `titleCount`: `50`. Will add "..." and trim if title length bigger.
+- `titlePrefix`: `""`. Will add before title (e.g. "Note: ")
 
 Note that this **does not** delete the notes dir with every call. It simply checks if there isn't already a file with the same name (based on the publication date), and adds one if not. 
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jam-my-stack",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "repository": {
     "url": "https://github.com/wgroeneveld/jam-my-stack",
     "type": "git"

src/mastodon/feed-parser.js

@@ -34,13 +34,22 @@ ${item.content}
   writeFileSync(`${path}/${item.hash}.md`, mddata, 'utf-8')
 }
 
+function trimIfNeeded(title, count, prefix) {
+  if(title.length > count) {
+    return prefix + title.substring(0, count) + "..."
+  }
+  return prefix + title
+}
+
 // opts:
 //  notesdir = `${__dirname}/content/notes`
 //  url = "https://chat.brainbaking.com/users/wouter/feed";
-//  utcOffset = "+01:00"
+//  utcOffset = 60 (in minutes)
+//  titleCount = 50
+//  titlePrefix = "Note: "
 
 async function parseMastoFeed(options) {
-  const { notesdir, url, utcOffset = 60 } = options
+  const { notesdir, url, utcOffset = 60, titleCount = 50, titlePrefix = "" } = options
 
   const notesroot = await getFiles(notesdir)
   const notes = notesroot
@@ -65,7 +74,7 @@ async function parseMastoFeed(options) {
     const context = item['thr:in-reply-to'] ? item['thr:in-reply-to']['@_ref'] : ""
 
     return { 
-      title: ent.decode(item.title), // summary (cut-off) of content
+      title: trimIfNeeded(ent.decode(item.title), titleCount, titlePrefix), // summary (cut-off) of content
       content: ent.decode(item.content['#text']), // format: <span class="h-card.... 
       url: item.id, // format: https://chat.brainbaking.com/objects/0707fd54-185d-4ee7-9204-be370d57663c
       context,

test/mastodon/feed-parser.test.js

@@ -18,6 +18,35 @@ describe("mastodon feed parser tests", () => {
 		fs.mkdirSync(dumpdir)
 	});
 
+	test("parse trims title according to config and adds three dots", async () => {
+		await parseMastoFeed({
+			url: "invalid",
+			notesdir: dumpdir,
+			utcOffset: 0,
+			titleCount: 5,
+			titlePrefix: "Note: "
+		})
+
+		const actualMd = await fsp.readFile(`${dumpdir}/2021/03/02h16m18s46.md`)
+		
+		const md = frontMatterParser.parseSync(actualMd.toString())
+		expect(md.data.title).toBe("Note: @Stam...")
+	})
+
+	test("parse does not trim if titleCount > title length and does not add three dots", async () => {
+		await parseMastoFeed({
+			url: "invalid",
+			notesdir: dumpdir,
+			utcOffset: 0,
+			titleCount: 5000
+		})
+
+		const actualMd = await fsp.readFile(`${dumpdir}/2021/03/02h16m18s46.md`)
+		
+		const md = frontMatterParser.parseSync(actualMd.toString())
+		expect(md.data.title).toBe("@StampedingLonghorn I tried to chase him away, but you know how that turned out... 😼 There's ...")
+	})
+
 	test("parse creates separate notes in each month subdir", async () => {
 		await parseMastoFeed({
 			url: "invalid",
@@ -34,7 +63,8 @@ describe("mastodon feed parser tests", () => {
 		await parseMastoFeed({
 			url: "invalid",
 			notesdir: dumpdir,
-			utcOffset: 0
+			utcOffset: 0,
+			titleCount: 5000			
 		})
 
 		const actualMd = (await fsp.readFile(`${dumpdir}/2021/03/01h19m03s35.md`)).toString()
@@ -46,7 +76,8 @@ describe("mastodon feed parser tests", () => {
 		await parseMastoFeed({
 			url: "invalid",
 			notesdir: dumpdir,
-			utcOffset: 0
+			utcOffset: 0,
+			titleCount: 5000			
 		})
 
 		const actualMd = await fsp.readFile(`${dumpdir}/2021/03/02h16m18s46.md`)