Support Saving and Resuming Chats in non-interactive mode

[vmiura]

What would you like to be added?

It would be quite useful to have command line support for saving and restoring chats.

The following tests show a potential way to use this:

test('should save and resume chat history using tags', async () => {
  rig.setup('chat-history-tags');
  const tag = `test-session-${Date.now()}`;
  
  // First run: save the history
  const result1 = await rig.run(
    'What is the capital of France?',
    '--save-chat',
    tag,
  );
  expect(result1).toContain('Paris');

  // Second run: resume the history
  const result2 = await rig.run(
    'What is its population?',
    '--resume-chat',
    tag,
  );
  expect(result2).toContain('million');
});

test('should save and resume chat history using file paths', async () => {
  rig.setup('chat-history-paths');
  const filePath = path.resolve(rig.testDir!, `chat-history-${Date.now()}.json`);

  // First run: save the history
  const result1 = await rig.run(
    'What is the capital of Japan?',
    '--save-chat',
    filePath,
  );
  expect(result1).toContain('Tokyo');

  // Second run: resume the history
  const result2 = await rig.run(
    'What is its population?',
    '--resume-chat',
    filePath,
  );
  expect(result2).toContain('million');

  await fs.unlink(filePath);
});

Why is this needed?

Saving and resuming context are generally useful features today, and enabling this on the command line extends the current functionality.

I would also like to save the chat logs to be able to process them for evaluations.

Additional context

No response

[vmiura]

I plan to share a PR shortly.

[MJjainam]

@vmiura We have added "-r" option to gemini cli you could do something like

test('should save and resume chat history', async () => {
  rig.setup('chat-history-tags');
  
  // First run: save the history
  const result1 = await rig.run(
    'What is the capital of France?',
  );
  expect(result1).toContain('Paris');

  // Second run: resume the history
  const result2 = await rig.run(
    'What is its population?',
    '-r',
  );
  expect(result2).toContain('million');
});

This should suffice the requirement. The only difference being explicit tagging is currently not possible.

[MJjainam]

In scenarios where we need to resume a specific conversation the below command can be run gemini "What is it's population" -r <session_id>

But this session id is not available to user as o/p of the gemini non interactive mode run. Capturing the requirement to print the session ID in json output mode here