import { EventEmitter } from 'node:events';
import type { IncomingMessage, ServerResponse } from 'http';
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { handleUserSyncRoutes } from '@electron/api/routes/user-sync';

const fetchMock = vi.hoisted(() => vi.fn());
const providerServiceMock = vi.hoisted(() => ({
  upsertSyncedAccountMetadata: vi.fn(),
}));

vi.mock('@electron/utils/proxy-fetch', () => ({
  proxyAwareFetch: (...args: unknown[]) => fetchMock(...args),
}));

vi.mock('@electron/services/providers/provider-service', () => ({
  getProviderService: () => providerServiceMock,
}));

function createResponse() {
  const chunks: string[] = [];
  const res = {
    statusCode: 0,
    setHeader: vi.fn(),
    end: vi.fn((chunk?: string) => {
      if (chunk) chunks.push(chunk);
    }),
  } as unknown as ServerResponse;

  return {
    res,
    get statusCode() {
      return res.statusCode;
    },
    json: () => JSON.parse(chunks.join('')) as unknown,
  };
}

function createRequest(
  method: string,
  body?: unknown,
  headers: Record<string, string> = {},
): IncomingMessage {
  const req = new EventEmitter();
  Object.assign(req, {
    method,
    headers: body === undefined
      ? headers
      : { ...headers, 'content-type': 'application/json' },
    [Symbol.asyncIterator]: async function* () {
      if (body !== undefined) {
        yield Buffer.from(JSON.stringify(body));
      }
    },
  });
  return req as IncomingMessage;
}

describe('user sync host api routes', () => {
  beforeEach(() => {
    vi.clearAllMocks();
    vi.restoreAllMocks();
    providerServiceMock.upsertSyncedAccountMetadata.mockResolvedValue(undefined);
  });

  it('requires a current user access token', async () => {
    const response = createResponse();

    const handled = await handleUserSyncRoutes(
      createRequest('GET'),
      response.res,
      new URL('http://127.0.0.1/api/user-sync/bootstrap'),
      {} as never,
    );

    expect(handled).toBe(true);
    expect(response.statusCode).toBe(400);
    expect(response.json()).toEqual({
      success: false,
      error: 'Missing x-niancode-access-token',
    });
    expect(fetchMock).not.toHaveBeenCalled();
  });

  it('fetches bootstrap, applies provider metadata, and strips secrets from the response', async () => {
    fetchMock.mockResolvedValueOnce(new Response(JSON.stringify({
      preferences: {
        theme: 'dark',
        sidebar_collapsed: true,
      },
      provider_accounts: [{
        id: 'openai-account-1',
        vendor_id: 'openai',
        label: 'OpenAI',
        auth_mode: 'api_key',
        model: 'gpt-4.1-mini',
        fallback_models: ['gpt-4o-mini'],
        enabled: true,
        is_default: true,
        api_key: 'sk-should-not-return',
        refresh_token: 'refresh-should-not-return',
        headers: { Authorization: 'Bearer secret' },
        updated_at: '2026-07-04T00:00:00.000Z',
      }],
      partners: [],
      usage_aggregates: [],
    }), { status: 200 }));
    const response = createResponse();

    const handled = await handleUserSyncRoutes(
      createRequest('GET', undefined, { 'x-niancode-access-token': 'access-token' }),
      response.res,
      new URL('http://127.0.0.1/api/user-sync/bootstrap'),
      {} as never,
    );

    expect(handled).toBe(true);
    expect(response.statusCode).toBe(200);
    expect(response.json()).toEqual({
      success: true,
      bootstrap: {
        preferences: {
          theme: 'dark',
          sidebarCollapsed: true,
        },
        providerAccounts: [{
          id: 'openai-account-1',
          vendorId: 'openai',
          label: 'OpenAI',
          authMode: 'api_key',
          model: 'gpt-4.1-mini',
          fallbackModels: ['gpt-4o-mini'],
          enabled: true,
          isDefault: true,
          metadata: {},
          updatedAt: '2026-07-04T00:00:00.000Z',
        }],
        partners: [],
        usageAggregates: [],
      },
      applied: { providerAccounts: 1 },
    });
    expect(JSON.stringify(response.json())).not.toContain('sk-should-not-return');
    expect(JSON.stringify(response.json())).not.toContain('refresh-should-not-return');
    expect(JSON.stringify(response.json())).not.toContain('Authorization');
    expect(fetchMock).toHaveBeenCalledWith('https://square.nianxx.cn/api/me/bootstrap', {
      method: 'GET',
      headers: { Authorization: 'Bearer access-token' },
    });
    expect(providerServiceMock.upsertSyncedAccountMetadata).toHaveBeenCalledWith({
      id: 'openai-account-1',
      vendorId: 'openai',
      label: 'OpenAI',
      authMode: 'api_key',
      model: 'gpt-4.1-mini',
      fallbackModels: ['gpt-4o-mini'],
      enabled: true,
      isDefault: true,
      metadata: {},
      updatedAt: '2026-07-04T00:00:00.000Z',
    });
  });

  it('proxies preferences as sanitized server payloads', async () => {
    fetchMock.mockResolvedValueOnce(new Response(JSON.stringify({
      preferences: { theme: 'dark' },
      provider_accounts: [],
      partners: [],
      usage_aggregates: [],
    }), { status: 200 }));
    const response = createResponse();

    const handled = await handleUserSyncRoutes(
      createRequest('PUT', {
        theme: 'dark',
        language: 'zh-CN',
        launchAtStartup: true,
        activeProjectId: 'prj_1',
      }, { 'x-niancode-access-token': 'access-token' }),
      response.res,
      new URL('http://127.0.0.1/api/user-sync/preferences'),
      {} as never,
    );

    expect(handled).toBe(true);
    expect(response.statusCode).toBe(200);
    expect(fetchMock).toHaveBeenCalledWith('https://square.nianxx.cn/api/me/preferences', {
      method: 'PUT',
      headers: {
        Authorization: 'Bearer access-token',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ theme: 'dark', language: 'zh-CN' }),
    });
  });

  it('proxies partners as sanitized server payloads', async () => {
    fetchMock.mockResolvedValueOnce(new Response(JSON.stringify({
      preferences: {},
      provider_accounts: [],
      partners: [],
      usage_aggregates: [],
    }), { status: 200 }));
    const response = createResponse();

    const handled = await handleUserSyncRoutes(
      createRequest('POST', {
        id: 'makelore-pm-test',
        displayName: 'PM',
        templateRoleId: 'custom',
        skillIds: ['pm-project-plan'],
        filePath: 'D:/repo/.opencode/agent/makelore-pm-test.md',
        projectRuntimeConfigsByProjectId: { prj_1: { filePath: 'D:/repo/file.md' } },
        createdAt: '2026-07-04T00:00:00.000Z',
        updatedAt: '2026-07-04T00:00:00.000Z',
      }, { 'x-niancode-access-token': 'access-token' }),
      response.res,
      new URL('http://127.0.0.1/api/user-sync/partners'),
      {} as never,
    );

    expect(handled).toBe(true);
    expect(response.statusCode).toBe(200);
    expect(fetchMock).toHaveBeenCalledWith('https://square.nianxx.cn/api/me/partners', {
      method: 'POST',
      headers: {
        Authorization: 'Bearer access-token',
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        id: 'makelore-pm-test',
        display_name: 'PM',
        template_role_id: 'custom',
        skill_ids: ['pm-project-plan'],
        created_at: '2026-07-04T00:00:00.000Z',
        updated_at: '2026-07-04T00:00:00.000Z',
      }),
    });
  });
});