/** Unit tests for `buildConversationContext` message flattening (deterministic). */
import { describe, expect, test } from 'bun:test';
import { buildConversationContext } from '../../src/utils/context';
import { createMockMessage, createMockState } from '../helpers/mockRuntime';

describe('buildConversationContext', () => {
  test('returns message text when no recent messages in values', () => {
    const message = createMockMessage({
      content: { text: 'Activate my workflow' },
    });
    const state = createMockState();

    const result = buildConversationContext(message, state);
    expect(result).toBe('Activate my workflow');
  });

  test('returns empty string when no text and no recent messages', () => {
    const message = createMockMessage({ content: { text: '' } });
    const state = createMockState();

    const result = buildConversationContext(message, state);
    expect(result).toBe('');
  });

  test('handles undefined state', () => {
    const message = createMockMessage({ content: { text: 'Hello' } });

    const result = buildConversationContext(message, undefined);
    expect(result).toBe('Hello');
  });

  test('appends current request to recentMessages', () => {
    const message = createMockMessage({ content: { text: 'Activate it' } });
    const state = createMockState({
      values: {
        recentMessages:
          'User: Show me my workflows\nAssistant: Here are your workflows: Stripe, Gmail',
      },
    });

    const result = buildConversationContext(message, state);
    expect(result).toContain('User: Show me my workflows');
    expect(result).toContain('Assistant: Here are your workflows');
    expect(result).toContain('Current request: Activate it');
  });

  test('preserves recentMessages formatting from provider', () => {
    const message = createMockMessage({ content: { text: 'Do something' } });
    const preformattedMessages = `[2024-01-01 10:00] Alice: Hello
[2024-01-01 10:01] Bot: Hi there!
[2024-01-01 10:02] Alice: Help me`;

    const state = createMockState({
      values: { recentMessages: preformattedMessages },
    });

    const result = buildConversationContext(message, state);
    expect(result).toBe(`${preformattedMessages}\n\nCurrent request: Do something`);
  });
});