import { describe, expect, it } from 'bun:test';
import { isPlaceholderOpenCodeTitle } from './opencode-sessions';

// OpenCode names a session `New session - <ISO>` until it has titled it from the conversation, which it
// does asynchronously. The strings below are real ones observed on 1.18.16 — both the placeholder and
// the good title it was replaced by.

describe('isPlaceholderOpenCodeTitle', () => {
  it('recognises the placeholder OpenCode uses before it has titled a session', () => {
    expect(isPlaceholderOpenCodeTitle('New session - 2026-08-10T15:44:17.178Z')).toBe(true);
    expect(isPlaceholderOpenCodeTitle('New session - 2026-08-10T12:41:02.757Z')).toBe(true);
  });

  it('treats an absent or empty title as unnamed too', () => {
    expect(isPlaceholderOpenCodeTitle(undefined)).toBe(true);
    expect(isPlaceholderOpenCodeTitle('')).toBe(true);
    expect(isPlaceholderOpenCodeTitle('   ')).toBe(true);
  });

  it('keeps a real title, including one that merely mentions a session', () => {
    // The title OpenCode actually gave a turn of ours, and the reason this is a pattern match rather
    // than a `startsWith('New session')`: a genuine title is allowed to begin with those words.
    expect(isPlaceholderOpenCodeTitle('Single color in oc-red2.png')).toBe(false);
    expect(isPlaceholderOpenCodeTitle('New session handling in the runner')).toBe(false);
    expect(isPlaceholderOpenCodeTitle('New session - what should it be called?')).toBe(false);
  });
});