import { describe, expect, it, vi } from 'vitest';
import { RedditBotApiClient, RedditBotApiError } from '../src/mcp/api-client.js';

describe('RedditBotApiClient', () => {
  it('uses a bearer token and parses JSON responses', async () => {
    const fetchImplementation = vi.fn(async () => new Response(JSON.stringify({ running: true }), { status: 200 }));
    const client = new RedditBotApiClient({
      baseUrl: 'http://redditbot.test/',
      token: 'read-token',
      fetchImplementation: fetchImplementation as typeof fetch,
    });

    await expect(client.get('/api/v1/control')).resolves.toEqual({ running: true });
    expect(fetchImplementation).toHaveBeenCalledWith('http://redditbot.test/api/v1/control', expect.objectContaining({
      headers: expect.objectContaining({ Authorization: 'Bearer read-token' }),
    }));
  });

  it('returns structured API errors to MCP tools', async () => {
    const client = new RedditBotApiClient({
      token: 'read-token',
      fetchImplementation: vi.fn(async () => new Response(JSON.stringify({ error: 'Agent credential lacks the required access' }), { status: 403 })) as typeof fetch,
    });

    await expect(client.post('/api/v1/control/start')).rejects.toEqual(
      new RedditBotApiError('Agent credential lacks the required access', 403),
    );
  });
});