import { expect, tap } from '@git.zone/tstest/tapbundle';
import * as tspm from '../ts/index.js';
import * as path from 'path';
import * as fs from 'fs/promises';
import { TspmIpcClient } from '../ts/client/tspm.ipcclient.js';
import * as os from 'os';

// Test IPC client functionality
tap.test('TspmIpcClient creation', async () => {
  const client = new TspmIpcClient();
  expect(client).toBeInstanceOf(TspmIpcClient);
});

tap.test('IPC client socket path', async () => {
  const client = new TspmIpcClient();
  const socketPath = (client as any).socketPath;

  expect(socketPath).toInclude('.tspm');
  expect(socketPath).toInclude('tspm.sock');
});

tap.test('IPC client daemon PID file path', async () => {
  const client = new TspmIpcClient();
  const daemonPidFile = (client as any).daemonPidFile;

  expect(daemonPidFile).toInclude('.tspm');
  expect(daemonPidFile).toInclude('daemon.pid');
});

tap.test('IPC client connection state', async () => {
  const client = new TspmIpcClient();
  const isConnected = (client as any).isConnected;

  expect(isConnected).toEqual(false); // Should be false initially
});

tap.test('IPC client daemon running check - no daemon', async () => {
  const client = new TspmIpcClient();
  const tspmDir = path.join(os.homedir(), '.tspm');
  const pidFile = path.join(tspmDir, 'daemon.pid');

  // Ensure no PID file exists for this test
  await fs.unlink(pidFile).catch(() => {});

  const isRunning = await (client as any).isDaemonRunning();
  expect(isRunning).toEqual(false);
});

tap.test('IPC client daemon running check - stale PID', async () => {
  const client = new TspmIpcClient();
  const tspmDir = path.join(os.homedir(), '.tspm');
  const pidFile = path.join(tspmDir, 'daemon.pid');

  // Create directory if it doesn't exist
  await fs.mkdir(tspmDir, { recursive: true });

  // Write a fake PID that doesn't exist
  await fs.writeFile(pidFile, '99999999');

  const isRunning = await (client as any).isDaemonRunning();
  expect(isRunning).toEqual(false);

  // Clean up - the stale PID should be removed
  const fileExists = await fs
    .access(pidFile)
    .then(() => true)
    .catch(() => false);
  expect(fileExists).toEqual(false);
});

tap.test('IPC client daemon running check - current process', async () => {
  const client = new TspmIpcClient();
  const tspmDir = path.join(os.homedir(), '.tspm');
  const pidFile = path.join(tspmDir, 'daemon.pid');
  const socketFile = path.join(tspmDir, 'tspm.sock');

  // Create directory if it doesn't exist
  await fs.mkdir(tspmDir, { recursive: true });

  // Write current process PID (simulating daemon is this process)
  await fs.writeFile(pidFile, process.pid.toString());

  // Create a fake socket file
  await fs.writeFile(socketFile, '');

  const isRunning = await (client as any).isDaemonRunning();
  expect(isRunning).toEqual(true);

  // Clean up
  await fs.unlink(pidFile).catch(() => {});
  await fs.unlink(socketFile).catch(() => {});
});

tap.test('IPC client singleton instance', async () => {
  // Import the singleton
  const { tspmIpcClient } = await import('../ts/client/tspm.ipcclient.js');

  expect(tspmIpcClient).toBeInstanceOf(TspmIpcClient);

  // Test that it's the same instance
  const { tspmIpcClient: secondImport } = await import(
    '../ts/client/tspm.ipcclient.js'
  );
  expect(tspmIpcClient).toEqual(secondImport);
});

tap.test('IPC client request method type safety', async () => {
  const client = new TspmIpcClient();

  // Test that request method exists
  expect(client.request).toBeInstanceOf(Function);
  expect(client.connect).toBeInstanceOf(Function);
  expect(client.disconnect).toBeInstanceOf(Function);
  expect(client.stopDaemon).toBeInstanceOf(Function);
  expect(client.getDaemonStatus).toBeInstanceOf(Function);
});

tap.test('IPC client error message formatting', async () => {
  const errorMessage =
    'Could not connect to TSPM daemon. Please try running "tspm daemon start" manually.';
  expect(errorMessage).toInclude('tspm daemon start');
});

tap.test('IPC client reconnection logic', async () => {
  const client = new TspmIpcClient();

  // Test reconnection error conditions
  const econnrefusedError = new Error('ECONNREFUSED');
  expect(econnrefusedError.message).toInclude('ECONNREFUSED');

  const enoentError = new Error('ENOENT');
  expect(enoentError.message).toInclude('ENOENT');
});

tap.test('IPC client daemon start timeout', async () => {
  const maxWaitTime = 10000; // 10 seconds
  const checkInterval = 500; // 500ms

  const maxChecks = maxWaitTime / checkInterval;
  expect(maxChecks).toEqual(20);
});

tap.test('IPC client daemon stop timeout', async () => {
  const maxWaitTime = 15000; // 15 seconds
  const checkInterval = 500; // 500ms

  const maxChecks = maxWaitTime / checkInterval;
  expect(maxChecks).toEqual(30);
});

export default tap.start();