/**
 * Single-origin transport contract.
 *
 * The client talks to one instance origin and four paths under it. These are
 * pure-string assertions: they pin what the client will send, not that a live
 * Maestro accepts the upgrade — that is the E2E harness's job.
 */
import { configureApi, get } from '../src/services/apiClient';
import { alarmSocketUrl, normalizeInstanceUrl, servicePath } from '../src/services/instanceUrl';
import { listSubscriptions, removeSubscription } from '../src/services/alarmApi';
import { probe } from '../src/services/connection';

// The probe module reads settings from storage; the URL helpers above do not,
// which is why they live in a storage-free module.
jest.mock('@react-native-async-storage/async-storage', () => ({
  getItem: jest.fn(async () => null),
  setItem: jest.fn(async () => undefined),
}));

describe('normalizeInstanceUrl', () => {
  it('accepts a bare host and adds http', () => {
    expect(normalizeInstanceUrl('localhost:8080')).toBe('http://localhost:8080');
  });

  it('keeps https and strips trailing slashes', () => {
    expect(normalizeInstanceUrl(' https://dcntrlized.example/ ')).toBe('https://dcntrlized.example');
    expect(normalizeInstanceUrl('http://10.0.2.2:8080///')).toBe('http://10.0.2.2:8080');
  });

  it('refuses non-http schemes, whitespace and empty values', () => {
    expect(normalizeInstanceUrl('')).toBeNull();
    expect(normalizeInstanceUrl('   ')).toBeNull();
    expect(normalizeInstanceUrl('ftp://host')).toBeNull();
    expect(normalizeInstanceUrl('http://')).toBeNull();
    expect(normalizeInstanceUrl('http://host with space')).toBeNull();
  });
});

describe('servicePath', () => {
  it('prefixes actions and auth with the service name', () => {
    expect(servicePath('/action/createAlert')).toBe('/api/alarm/action/createAlert');
    expect(servicePath('/auth/login')).toBe('/api/alarm/auth/login');
    expect(servicePath('action/getAlert')).toBe('/api/alarm/action/getAlert');
  });
});

describe('alarmSocketUrl', () => {
  it('carries the instance prefix and the frozen query', () => {
    expect(
      alarmSocketUrl({ baseUrl: 'https://instance.example' }, 'a1 b', 'tok/en'),
    ).toBe('wss://instance.example/api/alarm/ws/alarm?alertId=a1%20b&token=tok%2Fen');
  });

  it('keeps ws for a plain-http dev instance', () => {
    expect(alarmSocketUrl({ baseUrl: 'http://127.0.0.1:8080' }, 'a', 't')).toBe(
      'ws://127.0.0.1:8080/api/alarm/ws/alarm?alertId=a&token=t',
    );
  });

  it('is null when no instance is configured', () => {
    expect(alarmSocketUrl({ baseUrl: '' }, 'a', 't')).toBeNull();
  });
});

describe('probe', () => {
  it('reports offline with no base URL when nothing is configured', async () => {
    await expect(probe({ instanceUrl: '' })).resolves.toEqual({ baseUrl: '', online: false });
  });
});

describe('HTTP paths and bodies', () => {
  const g = globalThis as unknown as { fetch: typeof fetch };
  const realFetch = g.fetch;
  const seen: { url: string; body: string | undefined }[] = [];

  beforeEach(() => {
    seen.length = 0;
    configureApi({
      baseUrl: 'https://instance.example',
      token: 'tok',
      refreshToken: null,
      onUnauthorized: () => {},
      onSessionUpdate: () => {},
    });
    g.fetch = (async (url: string, init?: { body?: string }) => {
      seen.push({ url, body: init?.body });
      return {
        ok: true,
        status: 200,
        json: async () => ({ items: [] }),
        text: async () => '',
      };
    }) as unknown as typeof fetch;
  });

  afterEach(() => {
    g.fetch = realFetch;
  });

  it('sends actions through /api/alarm/action with the payload envelope', async () => {
    await get('/action/getAlert?alertId=a1');
    expect(seen[0].url).toBe('https://instance.example/api/alarm/action/getAlert?alertId=a1');
  });

  it('sends revocation with the wire subscription id inside the payload envelope', async () => {
    // The service parses `subscriptionId` as a uuid; before the type matched the
    // wire, the client sent `undefined` here and the revoke failed with a 400.
    await removeSubscription({ alertId: 'a1', subscriptionId: 's1' });
    expect(seen[0].url).toBe(
      'https://instance.example/api/alarm/action/removeSubscription',
    );
    expect(JSON.parse(String(seen[0].body))).toEqual({
      payload: { alertId: 'a1', subscriptionId: 's1' },
    });
  });

  it('unwraps the listSubscriptions `{items}` envelope', async () => {
    g.fetch = (async () => ({
      ok: true,
      status: 200,
      json: async () => ({
        items: [
          {
            id: 's1',
            deviceLabel: 'Android phone',
            platform: 'android',
            enabled: true,
            created: '2026-10-18T21:00:00Z',
          },
        ],
      }),
      text: async () => '',
    })) as unknown as typeof fetch;
    await expect(listSubscriptions('a1')).resolves.toEqual([
      {
        id: 's1',
        deviceLabel: 'Android phone',
        platform: 'android',
        enabled: true,
        created: '2026-10-18T21:00:00Z',
      },
    ]);
  });
});