// ========= Copyright 2025-2026 @ Eigent.ai All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2025-2026 @ Eigent.ai All Rights Reserved. =========

import { beforeEach, describe, expect, it, vi } from 'vitest';

const apiMocks = vi.hoisted(() => ({
  proxyFetchPost: vi.fn(),
}));

vi.mock('@/api/http', () => ({
  getProxyBaseURL: vi.fn(async () => 'https://example.test'),
  proxyFetchDelete: vi.fn(),
  proxyFetchGet: vi.fn(),
  proxyFetchPatch: vi.fn(),
  proxyFetchPost: apiMocks.proxyFetchPost,
}));

import {
  __remoteControlTestHooks,
  isRemoteControlAlreadyGoneError,
  parseRemoteControlLinkToken,
  sendRemoteControlCommand,
} from '@/lib/remoteControl';

beforeEach(() => {
  apiMocks.proxyFetchPost.mockReset();
  __remoteControlTestHooks.resetPendingCommandRequests();
});

describe('parseRemoteControlLinkToken', () => {
  it('reads the canonical fragment token', () => {
    expect(
      parseRemoteControlLinkToken(
        'https://remote.eigent.ai/remote-control/rcs_test#t=fragment-token'
      )
    ).toBe('fragment-token');
  });

  it('falls back to query token for legacy links', () => {
    expect(
      parseRemoteControlLinkToken('/remote-control/rcs_test?t=query-token')
    ).toBe('query-token');
  });

  it('returns empty string when the token is absent', () => {
    expect(parseRemoteControlLinkToken('/remote-control/rcs_test')).toBe('');
  });
});

describe('isRemoteControlAlreadyGoneError', () => {
  it('treats 410 (already revoked/expired) as already gone', () => {
    expect(isRemoteControlAlreadyGoneError({ status: 410 })).toBe(true);
  });

  it('treats 404 (session not found) as already gone', () => {
    expect(isRemoteControlAlreadyGoneError({ status: 404 })).toBe(true);
  });

  it('does not treat other errors as already gone', () => {
    expect(isRemoteControlAlreadyGoneError({ status: 403 })).toBe(false);
    expect(isRemoteControlAlreadyGoneError({ status: 400 })).toBe(false);
    expect(isRemoteControlAlreadyGoneError({ status: 500 })).toBe(false);
  });

  it('handles errors without a status (e.g. network failures)', () => {
    expect(isRemoteControlAlreadyGoneError(new Error('Network error'))).toBe(
      false
    );
    expect(isRemoteControlAlreadyGoneError(null)).toBe(false);
    expect(isRemoteControlAlreadyGoneError(undefined)).toBe(false);
  });
});

describe('sendRemoteControlCommand', () => {
  it('reuses the client request id after a lost response', async () => {
    apiMocks.proxyFetchPost
      .mockRejectedValueOnce(new TypeError('response lost'))
      .mockResolvedValueOnce({
        command_id: 'rc_cmd_1',
        status: 'pending',
      });

    await expect(
      sendRemoteControlCommand(
        'session-1',
        'user_message',
        { content: 'hello' },
        undefined,
        'link-token'
      )
    ).rejects.toThrow('response lost');
    await expect(
      sendRemoteControlCommand(
        'session-1',
        'user_message',
        { content: 'hello' },
        undefined,
        'link-token'
      )
    ).resolves.toMatchObject({ command_id: 'rc_cmd_1' });

    const firstBody = apiMocks.proxyFetchPost.mock.calls[0][1];
    const retryBody = apiMocks.proxyFetchPost.mock.calls[1][1];
    expect(retryBody.client_request_id).toBe(firstBody.client_request_id);
  });

  it('allocates a fresh request id after the prior command succeeds', async () => {
    apiMocks.proxyFetchPost.mockResolvedValue({
      command_id: 'rc_cmd_1',
      status: 'pending',
    });

    await sendRemoteControlCommand(
      'session-1',
      'stop',
      {},
      undefined,
      'link-token'
    );
    await sendRemoteControlCommand(
      'session-1',
      'stop',
      {},
      undefined,
      'link-token'
    );

    expect(apiMocks.proxyFetchPost.mock.calls[1][1].client_request_id).not.toBe(
      apiMocks.proxyFetchPost.mock.calls[0][1].client_request_id
    );
  });
});