import 'dart:developer';
import 'dart:io';

import 'package:dio/dio.dart';
import 'package:dio/io.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:mnemo_cards_common/mnemo_cards_common.dart';
import 'package:package_info_plus/package_info_plus.dart';
import 'package:collection/collection.dart';

import '../../di/locator.dart';
import '../../main.dart';

class DioProvider {
  late final Dio _dio;

  DioProvider();

  Dio get dio => _dio;

  Future<DioProvider> init() async {
    PackageInfo appPackageInfo = await PackageInfo.fromPlatform();
    String appVersion = appPackageInfo.version;

    _dio = Dio()
      ..interceptors.addAll([
        // CertificatePinningInterceptor(allowedSHAFingerprints: [
        //   '28:21:5C:FB:54:4F:4A:DC:F8:5E:4C:FE:44:C8:E0:7B:0B:09:9D:D0:A9:FA:60:1D:3B:03:FF:EC:25:1A:C5:CC',
        // ]),
        InterceptorsWrapper(onError: (exception, handler) {
          if (kDebugMode) {
            log(exception.requestOptions.path ?? '');
            log(exception.toString());
            final snackBar = SnackBar(
              content: Text(
                  '${exception.requestOptions.path}\n${exception.requestOptions.data}\n${exception.toString()}'),
            );
            ScaffoldMessenger.of(scaffoldKey.currentContext!)
                .showSnackBar(snackBar);
          }
          // if (exception.response?.statusCode == 401 &&
          //     !locator.userManager.hasUser) {
          //   try {
          //     if (!AutoRouter.of(scaffoldKey.currentContext!)
          //         .isRouteActive(ProfilePage.name)) {
          //       AutoRouter.of(scaffoldKey.currentContext!).push(
          //         PageRouteInfo(ProfilePage.name),
          //       );
          //     }
          //   } catch (e) {}
          // }
          handler.next(exception);
        }),
        InterceptorsWrapper(onRequest: (request, handler) async {
          final String? requestToken;
          try {
            requestToken = TokenGenerator.generateRequestToken(
              requestBody: (request.data as Object?)?.encode() ?? '',
              appVersion: appVersion,
              requestPath: request.uri.path,
              userToken: await locator.userManager.getAuthToken(),
            );
          } catch (e, s) {
            log(
              'Exception while generating request token',
              error: e,
              stackTrace: s,
            );
            throw Exception(
              'Exception while generating request token ${e} ${s}',
            );
          }
          request.headers = {
            ...request.headers,
            AppHeaders.appVersion: appVersion,
            AppHeaders.requestToken: requestToken,
          };
          handler.next(request);
        })
      ]);

    if (!kIsWeb) {
      final securityContext = SecurityContext(withTrustedRoots: true);

      // securityContext.setTrustedCertificatesBytes(Certificates.crt);
      // securityContext.usePrivateKeyBytes(Certificates.key);

      _dio.httpClientAdapter = IOHttpClientAdapter(
        createHttpClient: () {
          HttpClient httpClient = HttpClient(context: securityContext)
            ..badCertificateCallback =
                (X509Certificate cert, String host, int port) {
              print(cert.issuer);
              print('$host $port');
              final now = DateTime.now();
              final valid = cert.startValidity.isBefore(now) &&
                  cert.endValidity.isAfter(now);
              return valid &&
                  const DeepCollectionEquality().equals(
                    cert.sha1,
                    _cert,
                  );
            };
          return httpClient;
        },
      );
    }
    return this;
  }

  static final _cert =
      '0A:82:77:1E:97:98:05:76:FC:ED:76:89:87:12:E8:9E:92:14:94:D3'
          .split(':')
          .map((v) => int.parse(v, radix: 16))
          .toList();
}