import 'dart:convert';
import 'package:http/http.dart' as http;
import 'package:get/get.dart';
import 'package:marco/helpers/services/storage/local_storage.dart';
import 'package:marco/controller/permission_controller.dart';
import 'package:logger/logger.dart';
import 'package:marco/helpers/services/api_endpoints.dart';
import 'package:marco/controller/project_controller.dart';

final Logger logger = Logger();

class AuthService {
  static const String _baseUrl = ApiEndpoints.baseUrl;
  static const Map<String, String> _headers = {
    'Content-Type': 'application/json',
  };
  static bool isLoggedIn = false;
  static Future<Map<String, String>?> loginUser(
      Map<String, dynamic> data) async {
    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/auth/login-mobile"),
        headers: _headers,
        body: jsonEncode(data),
      );

      final responseData = jsonDecode(response.body);
      if (response.statusCode == 200 && responseData['data'] != null) {
        await _handleLoginSuccess(responseData['data']);
        return null;
      } else if (response.statusCode == 401) {
        return {"password": "Invalid email or password"};
      } else {
        return {
          "error": responseData['message'] ?? "Unexpected error occurred"
        };
      }
    } catch (e) {
      logger.e("Login error: $e");
      return {"error": "Network error. Please check your connection."};
    }
  }

  /// Refreshes the JWT token using the refresh token.
  static Future<bool> refreshToken() async {
    final accessToken = await LocalStorage.getJwtToken();
    final refreshToken = await LocalStorage.getRefreshToken();

    if (accessToken == null ||
        refreshToken == null ||
        accessToken.isEmpty ||
        refreshToken.isEmpty) {
      logger.w("Missing token or refresh token for refresh.");
      return false;
    }

    final requestBody = {
      "token": accessToken,
      "refreshToken": refreshToken,
    };

    logger.i("Sending refresh token request with body: $requestBody");

    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/auth/refresh-token"),
        headers: {
          'Content-Type': 'application/json',
        },
        body: jsonEncode(requestBody),
      );

      logger.i(
          "Refresh token API response (${response.statusCode}): ${response.body}");

      final data = jsonDecode(response.body);
      if (response.statusCode == 200 && data['success'] == true) {
        final newAccessToken = data['data']['token'];
        final newRefreshToken = data['data']['refreshToken'];

        if (newAccessToken == null || newRefreshToken == null) {
          logger.w("Invalid tokens received during refresh.");
          return false;
        }

        await LocalStorage.setJwtToken(newAccessToken);
        await LocalStorage.setRefreshToken(newRefreshToken);
        await LocalStorage.setLoggedInUser(true);

        logger.i("Token refreshed successfully.");
        return true;
      } else {
        logger.w("Refresh failed: ${data['message']}");
        return false;
      }
    } catch (e) {
      logger.e("Exception during token refresh: $e");
      return false;
    }
  }

// Forgot password API
  static Future<Map<String, String>?> forgotPassword(String email) async {
    final requestBody = {"email": email};

    logger.i("Sending forgot password request with email: $email");

    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/auth/forgot-password"),
        headers: _headers,
        body: jsonEncode(requestBody),
      );

      logger.i(
          "Forgot password API response (${response.statusCode}): ${response.body}");

      final responseData = jsonDecode(response.body);

      if (response.statusCode == 200 && responseData['success'] == true) {
        logger.i("Forgot password request successful.");
        return null;
      } else {
        return {
          "error":
              responseData['message'] ?? "Failed to send password reset link."
        };
      }
    } catch (e) {
      logger.e("Exception during forgot password request: $e");
      return {"error": "Network error. Please check your connection."};
    }
  }

// Request demo API
  static Future<Map<String, String>?> requestDemo(
      Map<String, dynamic> demoData) async {
    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/market/inquiry"),
        headers: _headers,
        body: jsonEncode(demoData),
      );

      final responseData = jsonDecode(response.body);

      if (response.statusCode == 200 && responseData['success'] == true) {
        logger.i("Request Demo submitted successfully.");
        return null;
      } else {
        return {
          "error": responseData['message'] ?? "Failed to submit demo request."
        };
      }
    } catch (e) {
      logger.e("Exception during request demo: $e");
      return {"error": "Network error. Please check your connection."};
    }
  }

  static Future<List<Map<String, dynamic>>?> getIndustries() async {
    try {
      final response = await http.get(
        Uri.parse("$_baseUrl/market/industries"),
        headers: _headers,
      );

      logger.i(
          "Get Industries API response (${response.statusCode}): ${response.body}");

      final responseData = jsonDecode(response.body);

      if (response.statusCode == 200 && responseData['success'] == true) {
        // Return the list of industries as List<Map<String, dynamic>>
        final List<dynamic> industriesData = responseData['data'];
        return industriesData.cast<Map<String, dynamic>>();
      } else {
        logger.w("Failed to fetch industries: ${responseData['message']}");
        return null;
      }
    } catch (e) {
      logger.e("Exception during getIndustries: $e");
      return null;
    }
  }

  /// Generates a new MPIN for the user.
  static Future<Map<String, String>?> generateMpin({
    required String employeeId,
    required String mpin,
  }) async {
    final jwtToken = await LocalStorage.getJwtToken();

    final requestBody = {
      "employeeId": employeeId,
      "mpin": mpin,
    };

    logger.i("Sending MPIN generation request: $requestBody");

    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/auth/generate-mpin"),
        headers: {
          'Content-Type': 'application/json',
          if (jwtToken != null && jwtToken.isNotEmpty)
            'Authorization': 'Bearer $jwtToken',
        },
        body: jsonEncode(requestBody),
      );

      logger.i(
          "Generate MPIN API response (${response.statusCode}): ${response.body}");

      final responseData = jsonDecode(response.body);

      if (response.statusCode == 200 && responseData['success'] == true) {
        logger.i("MPIN generated successfully.");
        return null;
      } else {
        return {"error": responseData['message'] ?? "Failed to generate MPIN."};
      }
    } catch (e) {
      logger.e("Exception during generate MPIN: $e");
      return {"error": "Network error. Please check your connection."};
    }
  }

  static Future<Map<String, String>?> verifyMpin({
    required String mpin,
    required String mpinToken,
  }) async {
    // Get employee info from local storage
    final employeeInfo = LocalStorage.getEmployeeInfo();

    if (employeeInfo == null) {
      logger.w("Employee info not found in local storage.");
      return {"error": "Employee info not found. Please login again."};
    }

    final employeeId = employeeInfo.id;

    final jwtToken = await LocalStorage.getJwtToken();

    final requestBody = {
      "employeeId": employeeId,
      "mpin": mpin,
      "mpinToken": mpinToken,
    };

    logger.i("Sending MPIN verification request: $requestBody");

    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/auth/login-mpin"),
        headers: {
          'Content-Type': 'application/json',
          if (jwtToken != null && jwtToken.isNotEmpty)
            'Authorization': 'Bearer $jwtToken',
        },
        body: jsonEncode(requestBody),
      );

      logger.i(
          "Verify MPIN API response (${response.statusCode}): ${response.body}");

      final responseData = jsonDecode(response.body);

      if (response.statusCode == 200 && responseData['success'] == true) {
        logger.i("MPIN verified successfully.");
        return null;
      } else {
        return {"error": responseData['message'] ?? "Failed to verify MPIN."};
      }
    } catch (e) {
      logger.e("Exception during verify MPIN: $e");
      return {"error": "Network error. Please check your connection."};
    }
  }

  // Generate OTP API
  static Future<Map<String, String>?> generateOtp(String email) async {
    final requestBody = {"email": email};

    logger.i("Sending generate OTP request: $requestBody");

    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/auth/send-otp"),
        headers: _headers,
        body: jsonEncode(requestBody),
      );

      logger.i(
          "Generate OTP API response (${response.statusCode}): ${response.body}");

      final responseData = jsonDecode(response.body);

      if (response.statusCode == 200 && responseData['success'] == true) {
        logger.i("OTP generated successfully.");
        return null;
      } else {
        return {"error": responseData['message'] ?? "Failed to generate OTP."};
      }
    } catch (e) {
      logger.e("Exception during generate OTP: $e");
      return {"error": "Network error. Please check your connection."};
    }
  }

// Verify OTP API
  static Future<Map<String, String>?> verifyOtp({
    required String email,
    required String otp,
  }) async {
    final requestBody = {
      "email": email,
      "otp": otp,
    };

    logger.i("Sending verify OTP request: $requestBody");

    try {
      final response = await http.post(
        Uri.parse("$_baseUrl/auth/login-otp"),
        headers: _headers,
        body: jsonEncode(requestBody),
      );

      logger.i(
          "Verify OTP API response (${response.statusCode}): ${response.body}");

      final responseData = jsonDecode(response.body);

      if (response.statusCode == 200 && responseData['data'] != null) {
        await _handleLoginSuccess(responseData['data']);
        logger.i("OTP verified and login state initialized successfully.");
        return null;
      } else {
        return {"error": responseData['message'] ?? "Failed to verify OTP."};
      }
    } catch (e) {
      logger.e("Exception during verify OTP: $e");
      return {"error": "Network error. Please check your connection."};
    }
  }

  static Future<void> _handleLoginSuccess(Map<String, dynamic> data) async {
    final jwtToken = data['token'];
    final refreshToken = data['refreshToken'];
    final mpinToken = data['mpinToken'];

    logger.i("JWT Token: $jwtToken");
    if (refreshToken != null) logger.i("Refresh Token: $refreshToken");
    if (mpinToken != null) logger.i("MPIN Token: $mpinToken");

    await LocalStorage.setJwtToken(jwtToken);
    await LocalStorage.setLoggedInUser(true);

    if (refreshToken != null) {
      await LocalStorage.setRefreshToken(refreshToken);
    }
    if (mpinToken != null && mpinToken.isNotEmpty) {
      await LocalStorage.setMpinToken(mpinToken);
      await LocalStorage.setIsMpin(true);
    } else {
      await LocalStorage.setIsMpin(false);
      await LocalStorage.removeMpinToken();
    }

    // ✅ Put and load PermissionController
    final permissionController = Get.put(PermissionController());
    await permissionController.loadData(jwtToken);
    await Get.find<ProjectController>().fetchProjects();

    isLoggedIn = true;
  }
}