'use strict';

const assert = require('assert');

const { _private: loginPrivate } = require('../src/services/login_service');
const { _private: chatgptPrivate } = require('../src/services/chatgpt_service');
const {
  handleIdentityVerification,
  handleChallengeSelection,
  inputCurrent2fa,
  _private: commonAuthPrivate,
} = require('../src/services/common_auth');

function emptyLocator() {
  return {
    count: async () => 0,
    nth: () => { throw new Error('empty locator'); },
  };
}

(async () => {
  const securityCodeText = [
    'Get a code to sign in',
    'To get your security code, go to g.co/sc in a new browser window',
    'Enter security code',
    'Try another way',
  ].join('\n');

  assert.strictEqual(loginPrivate.hasSecurityCodePageText(securityCodeText), true);
  assert.strictEqual(commonAuthPrivate.hasSecurityCodePageText(securityCodeText), true);
  assert.strictEqual(
    loginPrivate.hasSecurityCodePageText('Get a verification code from the Google Authenticator app'),
    false,
    'Authenticator 页面不能被识别为 g.co 安全码页面',
  );

  const phoneTabletOnlyText = [
    "Verify it's you",
    'Choose a way to verify',
    "Use your phone or tablet to get a security code (even if it's offline)",
  ].join('\n');
  {
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/selection',
      locator: selector => selector === 'body'
        ? { innerText: async () => phoneTabletOnlyText }
        : emptyLocator(),
    };
    assert.strictEqual(
      await commonAuthPrivate.detectPhoneTabletOnlyChallenge(page),
      true,
      '只有手机/平板安全码时应立即识别',
    );
    assert.strictEqual(await loginPrivate.detectPhoneTabletOnlyChallenge(page), true);
  }

  {
    let optionsSettled = false;
    const makeMissing = () => ({
      count: async () => 0,
      nth() { return this; },
      first() { return this; },
      or() { return this; },
      waitFor: async () => { throw new Error('not visible'); },
      isVisible: async () => false,
      textContent: async () => '',
    });
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/selection',
      locator: selector => {
        if (selector === 'body') {
          return {
            ...makeMissing(),
            innerText: async () => optionsSettled
              ? phoneTabletOnlyText
              : "Verify it's you\nChoose a way to verify",
          };
        }
        return makeMissing();
      },
      waitForLoadState: async () => {},
      waitForTimeout: async () => { optionsSettled = true; },
    };
    const result = await handleIdentityVerification(page, {}, () => {});
    assert.deepStrictEqual(
      result,
      [false, '需手机/平板验证', 'PHONE_TABLET_VERIFY'],
      'selection 首次正文未稳定时，等待后必须复检唯一手机/平板方式',
    );
  }

  {
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/selection',
      locator: selector => selector === 'body'
        ? { innerText: async () => `${phoneTabletOnlyText}\nGet a verification code from the Google Authenticator app` }
        : emptyLocator(),
    };
    assert.strictEqual(
      await commonAuthPrivate.detectPhoneTabletOnlyChallenge(page),
      false,
      '仍有Authenticator选项时不得误判为只能手机/平板验证',
    );
  }

  {
    const heading = {
      first() { return this; },
      textContent: async () => "Verify it's you",
    };
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/ootp',
      locator: selector => {
        if (selector === 'body') return { innerText: async () => phoneTabletOnlyText };
        if (selector.startsWith('h1#headingText')) return heading;
        return emptyLocator();
      },
    };
    assert.strictEqual(await commonAuthPrivate.detectVerifyItsYouOotp(page), true);
    assert.strictEqual(
      await commonAuthPrivate.detectPhoneTabletOnlyChallenge(page),
      true,
      'OOTP 页面只剩手机/平板安全码时也应直接识别',
    );
  }

  {
    const makeMissing = () => ({
      count: async () => 0,
      nth() { return this; },
      first() { return this; },
      or() { return this; },
      waitFor: async () => { throw new Error('not visible'); },
      isVisible: async () => false,
      textContent: async () => '',
    });
    const heading = {
      ...makeMissing(),
      textContent: async () => "Verify it's you",
    };
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/ootp',
      locator: selector => {
        if (selector === 'body') return { ...makeMissing(), innerText: async () => phoneTabletOnlyText };
        if (selector.startsWith('h1#headingText')) return heading;
        return makeMissing();
      },
      waitForLoadState: async () => {},
      waitForTimeout: async () => {},
    };
    const result = await handleIdentityVerification(page, {}, () => {});
    assert.deepStrictEqual(
      result,
      [false, '需手机/平板验证', 'PHONE_TABLET_VERIFY'],
      'Verify it’s you + 唯一手机/平板方式必须返回明确机器分类',
    );
    const oauthResult = await chatgptPrivate.handleGoogleOAuth(page, {}, () => {});
    assert.strictEqual(oauthResult.code, 'PHONE_TABLET_VERIFY', 'ChatGPT OAuth 必须保留手机/平板分类');
  }

  {
    const makeMissing = () => ({
      count: async () => 0,
      nth() { return this; },
      first() { return this; },
      or() { return this; },
      waitFor: async () => { throw new Error('not visible'); },
      isVisible: async () => false,
      textContent: async () => '',
    });
    const heading = {
      ...makeMissing(),
      textContent: async () => "Verify it's you",
    };
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/ootp',
      locator: selector => {
        if (selector === 'body') return { ...makeMissing(), innerText: async () => "Verify it's you" };
        if (selector.startsWith('h1#headingText')) return heading;
        return makeMissing();
      },
      waitForLoadState: async () => {},
      waitForTimeout: async () => {},
    };
    const result = await handleIdentityVerification(page, {}, () => {});
    assert.strictEqual(result[0], false);
    assert.strictEqual(result[2], 'VERIFY_ITS_YOU');
    assert.match(result[1], /Verify it.s you/);
  }

  {
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/custom',
      locator: selector => selector === 'body'
        ? { innerText: async () => securityCodeText }
        : emptyLocator(),
    };
    assert.strictEqual(await loginPrivate.isSecurityCodeChallenge(page), true);
    assert.strictEqual(await commonAuthPrivate.isSecurityCodeChallenge(page), true);
  }

  {
    const page = {
      url: () => 'https://accounts.google.com/signin/challenge/selection',
      locator: selector => selector === 'body'
        ? { innerText: async () => `Choose how you want to sign in\n${securityCodeText}\nGoogle Authenticator` }
        : emptyLocator(),
    };
    assert.strictEqual(
      await loginPrivate.isSecurityCodeChallenge(page),
      false,
      '验证方式列表即使展示 g.co 选项，也不能被当作当前安全码页面',
    );
    assert.strictEqual(await commonAuthPrivate.isSecurityCodeChallenge(page), false);
  }

  {
    let bodyText = securityCodeText;
    const tryAnotherButton = {
      isVisible: async () => true,
      scrollIntoViewIfNeeded: async () => {},
      click: async () => {
        bodyText = 'Choose how you want to sign in\nGoogle Authenticator';
      },
      evaluate: async () => true,
    };
    const page = {
      url: () => 'https://accounts.google.com/v3/signin/challenge/custom',
      locator: selector => {
        if (selector === 'body') return { innerText: async () => bodyText };
        if (selector === 'text="Try another way"') {
          return { count: async () => 1, nth: () => tryAnotherButton };
        }
        return emptyLocator();
      },
      waitForTimeout: async () => {},
    };
    const result = await loginPrivate.tryLeaveAlternateChallenge(page, () => {}, 50);
    assert.strictEqual(result.clicked, true);
    assert.strictEqual(result.moved, true, '同一 URL 内切换到验证方式列表也应视为成功离开');
  }

  {
    const attemptedSelectors = [];
    let currentUrl = 'https://accounts.google.com/signin/challenge/selection';
    const authButton = {
      isVisible: async () => true,
      scrollIntoViewIfNeeded: async () => {},
      click: async () => {
        currentUrl = 'https://accounts.google.com/signin/challenge/totp';
      },
      evaluate: async () => true,
    };
    const page = {
      url: () => currentUrl,
      locator: selector => {
        attemptedSelectors.push(selector);
        if (selector === 'li:has-text("Get a verification code from the Google Authenticator app")') {
          return { count: async () => 1, nth: () => authButton };
        }
        return emptyLocator();
      },
      waitForTimeout: async () => {},
      waitForLoadState: async () => {},
    };
    assert.strictEqual(await handleChallengeSelection(page, () => {}), true);
    assert.strictEqual(
      attemptedSelectors.includes('div[data-challengetype="6"]'),
      false,
      '不稳定的 challenge type 不能再作为 Authenticator 兜底',
    );
  }

  {
    const invalidResult = await inputCurrent2fa(
      { url: () => 'https://accounts.google.com/signin/challenge/totp' },
      '1//not-a-totp-secret',
      () => {},
    );
    assert.strictEqual(invalidResult.ok, false);
    assert.match(invalidResult.msg, /2FA密钥格式不正确|Base32/);
  }

  {
    let filledCode = '';
    const input = {
      first() { return this; },
      waitFor: async () => {},
      fill: async value => { if (value) filledCode = value; },
      press: async () => {},
    };
    const missingButton = {
      first() { return this; },
      waitFor: async () => { throw new Error('button unavailable'); },
    };
    const page = {
      url: () => 'https://accounts.google.com/signin/challenge/totp',
      locator: selector => selector.includes('input[id="totpPin"]') ? input : missingButton,
      waitForLoadState: async () => {},
    };
    const result = await inputCurrent2fa(page, 'JBSWY3DPEHPK3PXP', () => {});
    assert.strictEqual(result.ok, true, '页面只有totpPin输入框时也应能提交2FA');
    assert.match(filledCode, /^\d{6}$/);
  }

  {
    const alert = {
      isVisible: async () => true,
      innerText: async () => 'Wrong code. Try again.',
    };
    const page = {
      locator: selector => {
        if (selector.startsWith('[role="alert"]')) {
          return { count: async () => 1, nth: () => alert };
        }
        if (selector === 'body') return { innerText: async () => 'Wrong code. Try again.' };
        return emptyLocator();
      },
    };
    assert.strictEqual(await commonAuthPrivate.detectTotpRejection(page), 'Wrong code. Try again.');
    assert.strictEqual(await loginPrivate.detectTotpRejection(page), 'Wrong code. Try again.');
  }

  {
    let secondClicked = false;
    const failingButton = {
      isVisible: async () => true,
      scrollIntoViewIfNeeded: async () => {},
      click: async () => { throw new Error('intercepted'); },
      evaluate: async () => { throw new Error('intercepted'); },
    };
    const workingButton = {
      isVisible: async () => true,
      scrollIntoViewIfNeeded: async () => {},
      click: async () => { secondClicked = true; },
      evaluate: async () => true,
    };
    const page = {
      locator: selector => {
        if (selector === 'first') return { count: async () => 1, nth: () => failingButton };
        if (selector === 'second') return { count: async () => 1, nth: () => workingButton };
        return emptyLocator();
      },
    };
    const selector = await commonAuthPrivate.clickFirstVisible(page, ['first', 'second'], 20);
    assert.strictEqual(selector, 'second');
    assert.strictEqual(secondClicked, true, '点击失败后必须继续尝试下一个可点击元素');
  }

  console.log('security_code_challenge.test.js: PASS');
})().catch(error => {
  console.error(error);
  process.exitCode = 1;
});