import { describe, it, expect, vi } from 'vitest';
import { createDescribeCommand } from '../../src/commands/describe.js';
import type { DescribeCommandDeps } from '../../src/commands/describe.js';

function makeDeps(item: unknown = {}): DescribeCommandDeps & { output: string[] } {
  const output: string[] = [];
  return {
    output,
    fetchResource: vi.fn(async () => item),
    log: (...args: string[]) => output.push(args.join(' ')),
  };
}

describe('describe command', () => {
  it('shows detailed server info', async () => {
    const deps = makeDeps({
      id: 'srv-1',
      name: 'slack',
      transport: 'STDIO',
      packageName: '@slack/mcp',
      dockerImage: null,
      envTemplate: [],
    });
    const cmd = createDescribeCommand(deps);
    await cmd.parseAsync(['node', 'test', 'server', 'srv-1']);

    expect(deps.fetchResource).toHaveBeenCalledWith('servers', 'srv-1');
    const text = deps.output.join('\n');
    expect(text).toContain('--- Server ---');
    expect(text).toContain('name: slack');
    expect(text).toContain('transport: STDIO');
    expect(text).toContain('dockerImage: -');
  });

  it('resolves resource aliases', async () => {
    const deps = makeDeps({ id: 'p1' });
    const cmd = createDescribeCommand(deps);
    await cmd.parseAsync(['node', 'test', 'prof', 'p1']);
    expect(deps.fetchResource).toHaveBeenCalledWith('profiles', 'p1');
  });

  it('outputs JSON format', async () => {
    const deps = makeDeps({ id: 'srv-1', name: 'slack' });
    const cmd = createDescribeCommand(deps);
    await cmd.parseAsync(['node', 'test', 'server', 'srv-1', '-o', 'json']);

    const parsed = JSON.parse(deps.output[0] ?? '');
    expect(parsed.name).toBe('slack');
  });

  it('outputs YAML format', async () => {
    const deps = makeDeps({ id: 'srv-1', name: 'slack' });
    const cmd = createDescribeCommand(deps);
    await cmd.parseAsync(['node', 'test', 'server', 'srv-1', '-o', 'yaml']);
    expect(deps.output[0]).toContain('name: slack');
  });

  it('formats nested objects', async () => {
    const deps = makeDeps({
      id: 'srv-1',
      name: 'slack',
      metadata: { version: '1.0', nested: { deep: true } },
    });
    const cmd = createDescribeCommand(deps);
    await cmd.parseAsync(['node', 'test', 'server', 'srv-1']);

    const text = deps.output.join('\n');
    expect(text).toContain('metadata:');
    expect(text).toContain('version: 1.0');
  });

  it('formats arrays correctly', async () => {
    const deps = makeDeps({
      id: 'srv-1',
      permissions: ['read', 'write'],
      envTemplate: [],
    });
    const cmd = createDescribeCommand(deps);
    await cmd.parseAsync(['node', 'test', 'server', 'srv-1']);

    const text = deps.output.join('\n');
    expect(text).toContain('permissions: read, write');
    expect(text).toContain('envTemplate: []');
  });
});