fix(ui): fix commands cursor offset and update commands list

web/src/components/MemoEditor/Editor/CommandSuggestions.tsx

@@ -25,11 +25,15 @@ const CommandSuggestions = observer(({ editorRef, editorActions, commands }: Com
     onAutocomplete: (cmd, word, index, actions) => {
       // Replace the trigger word with the command output
       actions.removeText(index, word.length);
+      const initialPosition = actions.getCursorPosition();
       actions.insertText(cmd.run());
-      // Position cursor if command specifies an offset
-      if (cmd.cursorOffset) {
-        actions.setCursorPosition(actions.getCursorPosition() + cmd.cursorOffset);
-      }
+
+      const offset = cmd.cursorRange?.[0];
+      if (typeof offset === "undefined") return;
+
+      const cursorPosition = initialPosition + offset;
+      const length = cmd.cursorRange?.[1] || 0;
+      actions.setCursorPosition(cursorPosition, cursorPosition + length);
     },
   });
 

web/src/components/MemoEditor/Editor/commands.ts

@@ -1,28 +1,47 @@
 export interface Command {
   name: string;
   run: () => string;
-  cursorOffset?: number;
+  //  Ex.:
+  //    [4] == [4, 0]   - cursor offset is 4 chars from initial position
+  //    [7, 2]          - cursor offset is 7 chars and 2 next chars selected
+  //  If omitted, cursor stays in the end of the inserted string
+  cursorRange?: number[];
 }
 
 export const editorCommands: Command[] = [
   {
-    name: "todo",
-    run: () => "- [ ] ",
-    cursorOffset: 6, // Places cursor after "- [ ] " to start typing task
+    name: "code",
+    run: () => "```js\n\n```", // JS by default as most popular (at least on github)
+    cursorRange: [3, 2],
   },
   {
-    name: "code",
-    run: () => "```\n\n```",
-    cursorOffset: 4, // Places cursor on empty line between code fences
+    // Template from github, but with summary initially selected for better UX
+    name: "details",
+    run: () => "<details><summary>Details</summary>\n\n\n</details>",
+    cursorRange: [18, 7],
+  },
+  {
+    name: "image",
+    run: () => "![alt text]()", // No need in URL placeholder
+    cursorRange: [2, 8],
   },
   {
     name: "link",
-    run: () => "[text](url)",
-    cursorOffset: 1, // Places cursor after "[" to type link text
+    run: () => "[text]()",
+    cursorRange: [1, 4],
   },
   {
     name: "table",
-    run: () => "| Header | Header |\n| ------ | ------ |\n| Cell   | Cell |",
-    cursorOffset: 1, // Places cursor after first "|" to edit first header
+    run: () => "| Column1 | Column2 |\n| ------  | ------  |\n| Cell1   | Cell2   |",
+    cursorRange: [2, 7],
+  },
+  {
+    name: "todo",
+    run: () => "- [ ] ",
+  },
+  {
+    name: "youtube",
+    run: () => "[![alt text](https://img.youtube.com/vi/VIDEO_ID/0.jpg)](https://www.youtube.com/watch?v=VIDEO_ID)",
+    cursorRange: [3, 8],
   },
 ];