import { describe, it, expect, beforeAll, afterAll, vi } from 'vitest';
import { resolve } from 'path';
import { createServer } from 'net';
import type { GatewayServerConfig } from '../gateway/server.js';
import { GatewayServer } from '../gateway/server.js';
import { CompanionRuntimeClient } from './runtimeClient.js';
import {
  AndroidCompanionClient,
  IOSCompanionClient,
  MacOSCompanionClient,
} from './platformClients.js';

async function canListenOnLocalhost(): Promise<boolean> {
  return new Promise((resolvePromise) => {
    const s = createServer();
    s.once('error', () => resolvePromise(false));
    s.listen(0, '127.0.0.1', () => {
      s.close(() => resolvePromise(true));
    });
  });
}

const mockSession = {
  id: 'test',
  addMessage: vi.fn(),
  getHistory: vi.fn(() => []),
  clear: vi.fn(),
  setHistory: vi.fn(),
  replaceHistory: vi.fn(),
};

const mockSessionManager = {
  getSession: vi.fn(() => mockSession),
  listSessions: vi.fn(() => ['ws:test']),
  transferSession: vi.fn(),
  closeSession: vi.fn(),
};

const mockModelClient = {
  chat: vi.fn(async () => ({
    content: 'Hello from Flynn!',
    stopReason: 'end_turn',
    usage: { inputTokens: 10, outputTokens: 5 },
  })),
};

const mockToolRegistry = {
  register: vi.fn(),
  get: vi.fn(),
  list: vi.fn(() => []),
  filteredList: vi.fn(() => []),
  toAnthropicFormat: vi.fn(() => []),
  toOpenAIFormat: vi.fn(() => []),
  filteredToAnthropicFormat: vi.fn(() => []),
  filteredToOpenAIFormat: vi.fn(() => []),
};

const mockToolExecutor = {
  execute: vi.fn(async () => ({ success: true, output: 'ok' })),
};

const TEST_PORT = 18912;
const TEST_TOKEN = 'platform-clients-token';

let LISTEN_ALLOWED = true;
let server: GatewayServer;

beforeAll(async () => {
  LISTEN_ALLOWED = await canListenOnLocalhost();
  if (!LISTEN_ALLOWED) {
    return;
  }

  server = new GatewayServer({
    port: TEST_PORT,
    sessionManager: mockSessionManager as unknown as GatewayServerConfig['sessionManager'],
    modelClient: mockModelClient,
    systemPrompt: 'Test prompt',
    toolRegistry: mockToolRegistry as unknown as GatewayServerConfig['toolRegistry'],
    toolExecutor: mockToolExecutor as unknown as GatewayServerConfig['toolExecutor'],
    version: '0.1.0-test',
    uiDir: resolve(import.meta.dirname, '../gateway/ui'),
    auth: { token: TEST_TOKEN },
    nodes: {
      enabled: true,
      allowedRoles: ['companion'],
      featureGates: { 'ui.canvas': true },
      locationEnabled: true,
      pushEnabled: true,
    },
  });

  await server.start();
});

afterAll(async () => {
  if (!LISTEN_ALLOWED) {
    return;
  }
  await server.stop();
});

function createRuntime(): CompanionRuntimeClient {
  return new CompanionRuntimeClient({
    url: `ws://127.0.0.1:${TEST_PORT}`,
    token: TEST_TOKEN,
  });
}

describe('platform clients integration', () => {
  it('macOS companion wrapper registers and writes status with platform pinning', async () => {
    if (!LISTEN_ALLOWED) {
      return;
    }

    const runtime = createRuntime();
    const client = new MacOSCompanionClient({ runtime, nodeId: 'macos-e2e' });
    await client.connect();

    try {
      const boot = await client.bootstrap();
      expect(boot.register.registered).toBe(true);
      expect(boot.capabilities.node.id).toBe('macos-e2e');
      const status = await client.publishHeartbeat({
        appVersion: '1.0.0',
        statusText: 'menu-bar-active',
        powerSource: 'ac',
      });

      expect(status.updated).toBe(true);
      expect(status.status.platform).toBe('macos');

      const nodes = await client.listNodes();
      const entry = nodes.nodes.find((n) => n.nodeId === 'macos-e2e');
      expect(entry?.status?.platform).toBe('macos');
    } finally {
      client.disconnect();
    }
  });

  it('iOS companion wrapper uses APNs push flow', async () => {
    if (!LISTEN_ALLOWED) {
      return;
    }

    const runtime = createRuntime();
    const client = new IOSCompanionClient({ runtime, nodeId: 'ios-e2e' });
    await client.connect();

    try {
      await client.register();
      const push = await client.registerPushToken({
        token: 'd'.repeat(64),
        topic: 'dev.flynn.ios',
        environment: 'sandbox',
      });

      expect(push.updated).toBe(true);
      expect(push.push.provider).toBe('apns');

      const nodes = await client.listNodes();
      const entry = nodes.nodes.find((n) => n.nodeId === 'ios-e2e');
      expect(entry?.push?.provider).toBe('apns');
    } finally {
      client.disconnect();
    }
  });

  it('Android companion wrapper uses FCM push flow', async () => {
    if (!LISTEN_ALLOWED) {
      return;
    }

    const runtime = createRuntime();
    const client = new AndroidCompanionClient({ runtime, nodeId: 'android-e2e' });
    await client.connect();

    try {
      await client.register();
      const push = await client.registerPushToken('e'.repeat(64));

      expect(push.updated).toBe(true);
      expect(push.push.provider).toBe('fcm');

      const nodes = await client.listNodes();
      const entry = nodes.nodes.find((n) => n.nodeId === 'android-e2e');
      expect(entry?.push?.provider).toBe('fcm');
    } finally {
      client.disconnect();
    }
  });

  it('macOS companion wrapper supports canvas artifact lifecycle', async () => {
    if (!LISTEN_ALLOWED) {
      return;
    }

    const runtime = createRuntime();
    const client = new MacOSCompanionClient({
      runtime,
      nodeId: 'macos-canvas-e2e',
      defaultSessionId: 'ws:platform-canvas-e2e',
    });
    await client.connect();

    try {
      await client.register();

      const put = await client.putCanvasArtifact({
        artifactId: 'mac-art-1',
        type: 'note',
        content: { text: 'hello from platform wrapper' },
      });
      expect(put.upserted).toBe(true);
      expect(put.artifact.id).toBe('mac-art-1');

      const list = await client.listCanvasArtifacts();
      expect(list.artifacts.some((artifact) => artifact.id === 'mac-art-1')).toBe(true);

      const get = await client.getCanvasArtifact({ artifactId: 'mac-art-1' });
      expect(get.artifact.id).toBe('mac-art-1');

      const del = await client.deleteCanvasArtifact({ artifactId: 'mac-art-1' });
      expect(del.deleted).toBe(true);

      const clear = await client.clearCanvasArtifacts();
      expect(clear.cleared).toBe(0);
    } finally {
      client.disconnect();
    }
  });
});