Terminal: Add Ask Gemini flow (run-assistant-prompt + UI) so users can use Gemini without TTY

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: Neuro

electron-main.js

@@ -216,6 +216,53 @@ function createWindow() {
         }
     });
 
+    // Run assistant (e.g. gemini) with a prompt so the user can "Ask Gemini" without TTY. Uses same command as terminal auto-start (BF6_TERMINAL_ASSISTANT_CMD or "gemini"). For gemini we use --prompt; other CLIs may get prompt on stdin.
+    try {
+        ipcMain.handle('run-assistant-prompt', async (event, promptText) => {
+            const text = typeof promptText === 'string' ? promptText.trim() : '';
+            if (!text) return { ok: false, stdout: '', stderr: 'No question provided.', error: 'empty' };
+            const rawCmd = process.env.BF6_TERMINAL_ASSISTANT_CMD;
+            const baseCmd = (rawCmd !== undefined && rawCmd !== null && String(rawCmd).trim() === '')
+                ? 'gemini'
+                : String(rawCmd || 'gemini').trim();
+            const isGemini = /^gemini(\s|$)/i.test(baseCmd);
+            const termEnv = getTerminalEnv();
+            const cwd = process.env.HOME || process.env.USERPROFILE || (typeof os.homedir === 'function' ? os.homedir() : undefined);
+
+            return new Promise((resolve) => {
+                let stdout = '';
+                let stderr = '';
+                let proc;
+                try {
+                    if (isGemini) {
+                        const args = baseCmd.split(/\s+/);
+                        const bin = args[0];
+                        const rest = args.slice(1);
+                        proc = spawn(bin, [...rest, '--prompt', text], { cwd, env: termEnv, shell: isWin, windowsHide: true });
+                    } else {
+                        proc = spawn(baseCmd, [], { cwd, env: termEnv, shell: true, windowsHide: true, stdio: ['pipe', 'pipe', 'pipe'] });
+                        if (proc.stdin) {
+                            proc.stdin.write(text + '\n');
+                            proc.stdin.end();
+                        }
+                    }
+                    if (proc.stdout) proc.stdout.on('data', (d) => { stdout += terminalDataToStr(d); });
+                    if (proc.stderr) proc.stderr.on('data', (d) => { stderr += terminalDataToStr(d); });
+                    proc.on('error', (err) => {
+                        resolve({ ok: false, stdout, stderr: stderr || err.message, error: String(err.code || err.message) });
+                    });
+                    proc.on('close', (code) => {
+                        resolve({ ok: code === 0, stdout, stderr, exitCode: code });
+                    });
+                } catch (err) {
+                    resolve({ ok: false, stdout: '', stderr: err.message || String(err), error: String(err) });
+                }
+            });
+        });
+    } catch (e) {
+        console.warn('[BF6] run-assistant-prompt handler failed:', e);
+    }
+
     // Help guides: renderer asks main to read .md. Try multiple paths for dev vs packaged and different packager layouts.
     try {
         ipcMain.handle('get-guide-content', (event, key) => {

web_ui/main.js

@@ -243,8 +243,13 @@ function setupTerminalDrawer() {
           <button type="button" id="terminal-drawer-close" style="background:none; border:none; color:#ccc; cursor:pointer; font-size:16px;">×</button>
         </div>
         <pre id="terminal-output" style="flex:1; margin:0; padding:10px; overflow:auto; font-family:Consolas,monospace; font-size:12px; color:#d4d4d4; white-space:pre-wrap; word-break:break-all;"></pre>
+        <div style="padding:6px 8px; border-top:1px solid #333; display:flex; gap:8px; align-items:center; flex-shrink:0;">
+          <label for="terminal-ask-input" style="color:#888; font-size:11px; white-space:nowrap;">Ask Gemini:</label>
+          <input type="text" id="terminal-ask-input" placeholder="Type a question and click Ask (no TTY needed)" style="flex:1; padding:6px 10px; border-radius:6px; border:1px solid #333; background:#252526; color:#fff; font-family:Consolas,monospace; font-size:12px;" />
+          <button type="button" id="terminal-ask-btn" style="padding:6px 12px; border-radius:6px; border:1px solid #333; background:#0d5c0d; color:#baff80; cursor:pointer; font-weight:600;">Ask</button>
+        </div>
         <div style="padding:8px; border-top:1px solid #333; display:flex; gap:8px; align-items:center; flex-shrink:0;">
-          <input type="text" id="terminal-input" placeholder="Type a command and press Enter (e.g. help, gemini, ollama run llama)" style="flex:1; padding:8px 10px; border-radius:6px; border:1px solid #333; background:#252526; color:#fff; font-family:Consolas,monospace; font-size:12px;" />
+          <input type="text" id="terminal-input" placeholder="Shell command (e.g. help, gemini, ollama run llama)" style="flex:1; padding:8px 10px; border-radius:6px; border:1px solid #333; background:#252526; color:#fff; font-family:Consolas,monospace; font-size:12px;" />
           <button type="button" id="terminal-send" style="padding:8px 12px; border-radius:6px; border:1px solid #333; background:#2a2a2a; color:#baff80; cursor:pointer;">Send</button>
         </div>
       </div>
@@ -254,16 +259,37 @@ function setupTerminalDrawer() {
     const output = container.querySelector('#terminal-output');
     const input = container.querySelector('#terminal-input');
     const sendBtn = container.querySelector('#terminal-send');
+    const askInput = container.querySelector('#terminal-ask-input');
+    const askBtn = container.querySelector('#terminal-ask-btn');
     const closeBtn = container.querySelector('#terminal-drawer-close');
     const header = container.querySelector('#terminal-drawer-header');
 
     function appendOut(text) { output.textContent += text; output.scrollTop = output.scrollHeight; }
     function sendLine() { const t = (input.value || '').trim() + '\r'; if (t) { ipc.send('terminal-keystroke', t); appendOut(input.value + '\n'); input.value = ''; } }
 
+    function askGemini() {
+        const q = (askInput && askInput.value) ? askInput.value.trim() : '';
+        if (!q || !ipc.invoke) return;
+        askBtn.disabled = true;
+        appendOut('\n[You] ' + q + '\n');
+        if (askInput) askInput.value = '';
+        ipc.invoke('run-assistant-prompt', q).then((result) => {
+            if (result && (result.stdout || result.stderr)) {
+                appendOut((result.stdout || '') + (result.stderr ? (result.stderr + '\n') : '') + '\n');
+            } else if (result && result.error) {
+                appendOut('[Error] ' + (result.stderr || result.error) + '\n');
+            }
+        }).catch((err) => {
+            appendOut('[Error] ' + (err && err.message ? err.message : String(err)) + '\n');
+        }).finally(() => { askBtn.disabled = false; });
+    }
+
     ipc.on('terminal-incoming', (e, data) => appendOut(typeof data === 'string' ? data : String(data)));
     closeBtn.onclick = () => { container.style.transform = 'translateY(100%)'; };
     sendBtn.onclick = sendLine;
     input.onkeydown = (e) => { if (e.key === 'Enter') { e.preventDefault(); sendLine(); } };
+    if (askBtn) askBtn.onclick = askGemini;
+    if (askInput) askInput.onkeydown = (e) => { if (e.key === 'Enter') { e.preventDefault(); askGemini(); } };
     btn.addEventListener('click', () => { const open = container.style.transform === 'translateY(0)'; container.style.transform = open ? 'translateY(100%)' : 'translateY(0)'; if (!open) setTimeout(() => input.focus(), 100); });
 
     // Resize by dragging the header (same pattern as Code Preview drawer).