import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { mkdtempSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import { init } from '../src/cli/commands/init.js';
import { loadConfig, saveConfig } from '../src/core/config.js';
import { resolveMcpContext } from '../src/mcp/server.js';

describe('MCP context resolution', () => {
  let cwd: string;
  const originalEnv = process.env.AGENTHUB_SERVER;

  beforeEach(() => {
    cwd = mkdtempSync(join(tmpdir(), 'ah-mcp-'));
    init(cwd, { projectName: 'mcp-test', yes: true });
    delete process.env.AGENTHUB_SERVER;
  });

  afterEach(() => {
    if (originalEnv === undefined) delete process.env.AGENTHUB_SERVER;
    else process.env.AGENTHUB_SERVER = originalEnv;
    rmSync(cwd, { recursive: true, force: true });
  });

  it('self-heals a stale configured server URL before MCP tools call remote APIs', async () => {
    const config = loadConfig(cwd);
    config.serverUrl = 'http://agenthub.local:3377';
    saveConfig(cwd, config);

    const context = await resolveMcpContext(cwd, {
      probe: async () => false,
      discover: async () => 'http://127.0.0.1:3377',
    });

    expect(context).toEqual({ root: cwd, serverUrl: 'http://127.0.0.1:3377' });
  });
});