feat(backend): Add tab-completion to server console command names

packages/backend/src/services/CommandService.js

@@ -23,6 +23,10 @@ class Command {
         this.spec_ = spec;
     }
 
+    get id() {
+        return this.spec_.id;
+    }
+
     async execute(args, log) {
         log = log ?? console;
         const { id, name, description, handler } = this.spec_;
@@ -79,8 +83,12 @@ class CommandService extends BaseService {
         const args = text.split(/\s+/);
         await this.executeCommand(args, log);
     }
+
+    get commandNames() {
+        return this.commands_.map(command => command.id);
+    }
 }
 
 module.exports = {
     CommandService
-};
+};

packages/backend/src/services/DevConsoleService.js

@@ -131,6 +131,16 @@ class DevConsoleService extends BaseService {
             output: process.stdout,
             prompt: 'puter> ',
             terminal: true,
+            completer: line => {
+                // We only complete service and command names
+                if ( line.includes(' ') )
+                    return;
+
+                const results = commands.commandNames
+                    .filter(name => name.startsWith(line))
+                    .map(name => `${name} `); // Add a space after to make typing arguments more convenient
+                return [ results, line ];
+            },
         });
         rl.on('line', async (input) => {
             this._before_cmd();