/**
 * ================================================================
 * E2E Test Authentication Helper
 * ================================================================
 * Provides unified login for 8 roles: parent, child, teacher,
 * nutritionist, butler, assessor, admin, vendor
 *
 * Usage:
 *   const { ROLES, loginAs } = require('./helpers/auth');
 *   const auth = await loginAs(browser, 'parent');
 *   console.log(auth.token, auth.userId, auth.role);
 * ================================================================
 */

var BASE_URL = process.env.PW_BASE_URL || 'http://cfc.iwintrue.com';

// ================================================================
// ROLES - Test user credentials mapping
// ================================================================

var ROLES = {
  parent: {
    phone: '13701366188',
    userId: 1002,
    loginType: 'code',
    familyId: 2001
  },
  child: {
    phone: '13701366189',
    userId: 1003,
    loginType: 'code',
    familyId: 2001
  },
  teacher: {
    phone: '13800000001',
    userId: 1005,
    loginType: 'code',
    familyId: 0
  },
  nutritionist: {
    phone: '13800000010',
    userId: 1006,
    loginType: 'code',
    familyId: 0
  },
  butler: {
    phone: '13800000020',
    userId: 1007,
    loginType: 'code',
    familyId: 0
  },
  assessor: {
    phone: '13800000030',
    userId: 1008,
    loginType: 'code',
    familyId: 0
  },
  admin: {
    phone: '13800138000',
    userId: 1001,
    loginType: 'password',
    familyId: 0
  },
  vendor: {
    phone: '13800138001',
    userId: 1009,
    loginType: 'code',
    familyId: 0
  }
};

// ================================================================
// loginAs - Unified authentication for Playwright E2E tests
// ================================================================

/**
 * Login as a specific role and return auth information
 * @param {Browser} browser - Playwright Browser instance
 * @param {string} role - Role name (parent, child, teacher, etc.)
 * @returns {Promise<{token: string, userId: number, role: string, familyId: number}>}
 */
async function loginAs(browser, role) {
  var context = null;
  var page = null;

  try {
    var roleConfig = ROLES[role];
    if (!roleConfig) {
      throw new Error('Unknown role: ' + role + '. Available roles: ' + Object.keys(ROLES).join(', '));
    }

    context = await browser.newContext();
    page = await context.newPage();

    var authResult = {
      token: null,
      userId: roleConfig.userId,
      role: role,
      familyId: roleConfig.familyId
    };

    if (role === 'admin') {
      // Admin login via UI - navigate to admin login page
      await page.goto(BASE_URL + '/admin/login', { waitUntil: 'networkidle', timeout: 30000 });
      await page.waitForTimeout(2000);

      // Fill phone/username
      var inputSelectors = [
        '.el-input__inner',
        'input[type="text"]',
        'input[placeholder*="账号"]',
        'input[placeholder*="用户名"]',
        'input[name="username"]',
        '.el-input input'
      ];

      var inputFound = false;
      for (var i = 0; i < inputSelectors.length; i++) {
        try {
          var el = page.locator(inputSelectors[i]).first();
          if (await el.isVisible({ timeout: 3000 })) {
            await el.fill(roleConfig.phone);
            inputFound = true;
            break;
          }
        } catch (e) {
          // continue to next selector
        }
      }

      if (!inputFound) {
        var allInputs = page.locator('input');
        var count = await allInputs.count();
        if (count > 0) {
          await allInputs.first().fill(roleConfig.phone);
          if (count > 1) {
            await allInputs.nth(1).fill('admin123');
          }
        }
      }

      // Fill password (admin uses password login)
      var pwdInputs = page.locator('input[type="password"]');
      if (await pwdInputs.count() > 0) {
        await pwdInputs.first().fill('admin123');
      } else {
        var inputs = page.locator('input');
        var inputCount = await inputs.count();
        if (inputCount >= 2) {
          await inputs.nth(1).fill('admin123');
        }
      }

      // Click login button
      var btnSelectors = [
        '.el-button--primary',
        'button[type="submit"]',
        '.login-btn',
        '.el-button:has-text("登录")',
        '.el-button:has-text("登 录")'
      ];

      for (var j = 0; j < btnSelectors.length; j++) {
        try {
          var btn = page.locator(btnSelectors[j]).first();
          if (await btn.isVisible({ timeout: 2000 })) {
            await btn.click();
            break;
          }
        } catch (e) {
          // continue to next selector
        }
      }

      // Wait for login to complete
      try {
        await page.waitForURL(/\/dashboard|\/admin\//, { timeout: 20000 });
      } catch (e) {
        await page.waitForSelector('.sidebar-container, .el-menu, .el-aside', { timeout: 15000 });
      }

      // Read token from localStorage
      authResult.token = await page.evaluate(function() {
        return localStorage.getItem('token') || localStorage.getItem('access_token') || '';
      });

    } else {
      // Non-admin roles: try API login first, fallback to UI

      // Attempt 1: API login
      try {
        var apiResponse = await page.request.post(BASE_URL + '/api/auth/phone-login', {
          data: {
            phone: roleConfig.phone,
            code: '123456'
          },
          headers: {
            'Content-Type': 'application/json'
          }
        });

        if (apiResponse.ok()) {
          var apiData = await apiResponse.json();
          if (apiData && apiData.data && apiData.data.token) {
            authResult.token = apiData.data.token;
            // Store token in localStorage for UI consistency
            await page.evaluate(function(token) {
              localStorage.setItem('token', token);
              localStorage.setItem('access_token', token);
            }, authResult.token);
          }
        }
      } catch (apiErr) {
        // API login failed, will try UI fallback
      }

      // Fallback: UI login if API didn't work
      if (!authResult.token) {
        await page.goto(BASE_URL, { waitUntil: 'networkidle', timeout: 30000 });
        await page.waitForTimeout(2000);

        // Try to find and click login button or go to login page
        var loginBtnSelectors = [
          'button:has-text("登录")',
          'a:has-text("登录")',
          '.login-btn',
          '[class*="login"]'
        ];

        for (var k = 0; k < loginBtnSelectors.length; k++) {
          try {
            var loginBtn = page.locator(loginBtnSelectors[k]).first();
            if (await loginBtn.isVisible({ timeout: 2000 })) {
              await loginBtn.click();
              await page.waitForTimeout(1000);
              break;
            }
          } catch (e) {
            // continue
          }
        }

        // Fill phone and code
        var phoneInputSelectors = [
          'input[type="tel"]',
          'input[placeholder*="手机"]',
          'input[name="phone"]',
          '.el-input__inner'
        ];

        for (var m = 0; m < phoneInputSelectors.length; m++) {
          try {
            var phoneInput = page.locator(phoneInputSelectors[m]).first();
            if (await phoneInput.isVisible({ timeout: 2000 })) {
              await phoneInput.fill(roleConfig.phone);
              break;
            }
          } catch (e) {
            // continue
          }
        }

        // Fill verification code (123456 for test)
        var codeInputSelectors = [
          'input[placeholder*="验证码"]',
          'input[placeholder*="code"]',
          'input[name="code"]'
        ];

        for (var n = 0; n < codeInputSelectors.length; n++) {
          try {
            var codeInput = page.locator(codeInputSelectors[n]).first();
            if (await codeInput.isVisible({ timeout: 2000 })) {
              await codeInput.fill('123456');
              break;
            }
          } catch (e) {
            // continue
          }
        }

        // Click submit button
        var submitSelectors = [
          'button[type="submit"]',
          '.el-button--primary',
          'button:has-text("登录")',
          'button:has-text("提交")'
        ];

        for (var p = 0; p < submitSelectors.length; p++) {
          try {
            var submitBtn = page.locator(submitSelectors[p]).first();
            if (await submitBtn.isVisible({ timeout: 2000 })) {
              await submitBtn.click();
              break;
            }
          } catch (e) {
            // continue
          }
        }

        // Wait for navigation or token storage
        await page.waitForTimeout(3000);

        // Try to read token from localStorage
        authResult.token = await page.evaluate(function() {
          return localStorage.getItem('token') || localStorage.getItem('access_token') || '';
        });
      }
    }

    return authResult;

  } catch (error) {
    console.error('Login failed for role ' + role + ':', error.message);
    // Return partial result even on error
    return {
      token: null,
      userId: roleConfig ? roleConfig.userId : null,
      role: role,
      familyId: roleConfig ? roleConfig.familyId : null,
      error: error.message
    };
  } finally {
    // Cleanup: close the browser context
    if (context) {
      try {
        await context.close();
      } catch (closeErr) {
        // Ignore close errors
      }
    }
  }
}

// ================================================================
// Module exports (CommonJS)
// ================================================================

module.exports = {
  ROLES: ROLES,
  loginAs: loginAs,
  BASE_URL: BASE_URL
};