import 'dart:convert';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:http/http.dart';
import 'package:test_sa/api/service_request_api_client.dart';
import 'package:test_sa/controllers/providers/loading_notifier.dart';

import '../../../models/issue.dart';
import '../../../models/lookup.dart';
import '../../../models/service_report.dart';
import '../../../models/service_request/service_request.dart';
import '../../../models/service_request/service_request_search.dart';
import '../../../models/subtitle.dart';
import '../../../models/timer_model.dart';
import '../../../models/user.dart';
import '../../api_routes/urls.dart';
import '../../http_status_manger/http_status_manger.dart';
import '../../localization/localization.dart';

class ServiceRequestsProvider extends LoadingNotifier {
  // number of items call in each request
  final pageItemNumber = 50;

  //reset provider data
  void reset() {
    ServiceRequestApiClient().serviceRequests.clear();
    nextPage = true;
    stateCode = null;
  }

  // state code of current request to defied error message
  // like 400 customer request failed
  // 500 service not available
  int? stateCode;

  // true if there is next page in product list and false if not
  bool? nextPage = true;

  // when requests in-process _loading = true
  // done _loading = true
  // failed _loading = false
  bool? isLoading;

  ServiceRequestSearch? search = ServiceRequestSearch();

  /// return -2 if request in progress
  /// return -1 if error happen when sending request
  /// return state code if request complete may be 200, 404 or 403
  /// for more details check http state manager
  /// lib\controllers\http_status_manger\http_status_manger.dart
  Future<int> getRequests({
    required String host,
    required User? user,
    required String? hospitalId,
  }) async {
    if (isLoading == true) {
      return -2;
    }
    isLoading = true;
    Response response;
    try {
      response = await get(
        Uri.parse(
          "$host${URLs.getServiceRequests}?uid=${user?.id}${hospitalId == null ? "" : "&client_nid=$hospitalId"}&token=${user?.token}&page=${(ServiceRequestApiClient().serviceRequests.length) ~/ pageItemNumber}${search?.toSearchString()}",
        ),
        headers: {"Content-Type": "application/json; charset=utf-8"},
      );
      stateCode = response.statusCode;
      if (response.statusCode >= 200 && response.statusCode < 300) {
        // client's request was successfully received
        List requestsListJson = json.decode(utf8.decode(response.bodyBytes).replaceAll("\\", ""));
        List<ServiceRequest> serviceRequestsPage = requestsListJson.map((request) => ServiceRequest.fromJson(request)).toList();
        ServiceRequestApiClient().serviceRequests.addAll(serviceRequestsPage);
        if (serviceRequestsPage.length == pageItemNumber) {
          nextPage = true;
        } else {
          nextPage = false;
        }
      }
      isLoading = false;
      notifyListeners();
      return response.statusCode;
    } catch (error) {
      isLoading = false;
      stateCode = -1;
      notifyListeners();
      return -1;
    }
  }

  Future<ServiceRequest> getSingleServiceRequest({
    required String requestId,
    required String host,
    required User user,
    required Subtitle subtitle,
  }) async {
    String userData = '';
    userData += "&uid=${user.id}";
    userData += "&token=${user.token}";

    Response response;
    try {
      response = await get(Uri.parse(
        '$host${URLs.getSingleServiceRequest}?call_nid=$requestId$userData',
      ));
    } catch (error) {
      throw (HttpStatusManger.getStatusMessage(status: -1, subtitle: subtitle) ?? '');
    }

    // If the call to the server was successful, parse the JSON.
    if (response.statusCode >= 200 && response.statusCode < 300) {
      // If the call to the server was successful, parse the JSON.
      List jsonList = json.decode(utf8.decode(response.bodyBytes).replaceAll("\\", ""));
      List<ServiceRequest> requests = jsonList.map((i) => ServiceRequest.fromJson(i)).toList();
      return requests[0];
    } else {
      throw (HttpStatusManger.getStatusMessage(status: response.statusCode, subtitle: subtitle));
    }
  }

  /// ### Create service request and add the response to [ServiceRequestApiClient.serviceRequests]
  Future createRequest(BuildContext context, {required ServiceRequest serviceRequest, required List<File> deviceImages}) async {
    final subtitle = AppLocalization.of(context)?.subtitle;
    serviceRequest.devicePhotos = deviceImages.map((e) => base64Encode(e.readAsBytesSync())).toList();
    if (serviceRequest.audio != null) {
      final file = File(serviceRequest.audio!);
      serviceRequest.audio = base64Encode(file.readAsBytesSync());
    }
    waitApiRequest(() async {
      await ServiceRequestApiClient().createRequest(serviceRequest);
    }, onSuccess: () {
      /// TODO : this is temporary
      stateCode = 200;

      Fluttertoast.showToast(msg: subtitle?.requestCompleteSuccessfully ?? '');
      Navigator.of(context).pop();
    }, onError: (error) {
      /// TODO : this is temporary
      stateCode = error.error?.errorCode;

      String errorMessage = HttpStatusManger.getStatusMessage(status: error.error?.errorCode, subtitle: subtitle);
      ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(errorMessage)));
    });
  }

  Future<int> createIssueReport({
    required String host,
    required User user,
    required Issue issue,
  }) async {
    Response response;
    Map<String, String> body = issue.toMap();
    body["uid"] = user.id ?? "";
    body["token"] = user.token ?? "";
    try {
      response = await post(
        Uri.parse(host + URLs.createReport),
        body: body,
      );

      stateCode = response.statusCode;
      if (response.statusCode >= 200 && response.statusCode < 300) {}
      return response.statusCode;
    } catch (error) {
      return -1;
    }
  }

  Future<int> updateDate({
    required String? host,
    required User? user,
    required String? newDate,
    required Lookup? employee,
    required ServiceRequest? request,
  }) async {
    Response response;
    Map<String, String> body = {};
    body["uid"] = user?.id ?? '';
    body["token"] = user?.token ?? '';
    body["nid"] = request?.id ?? '';
    body["date"] = newDate ?? '';
    body["ass_emp"] = employee?.id.toString() ?? '';
    try {
      response = await post(
        Uri.parse((host ?? '') + URLs.updateRequestDate),
        body: body,
      );
      stateCode = response.statusCode;
      if (response.statusCode >= 200 && response.statusCode < 300) {
        request?.engineerName = employee?.label;
        notifyListeners();
      }
      return response.statusCode;
    } catch (error) {
      return -1;
    }
  }

  Future<int> createServiceReport({
    required String host,
    required User user,
    required ServiceReport report,
    required ServiceRequest request,
  }) async {
    Response response;
    Map<String, String> body = report.toMap();
    body["uid"] = user.id ?? "";
    body["token"] = user.token ?? "";
    body["job_id"] = request.id ?? '';
    try {
      response = await post(
        Uri.parse(host + URLs.createServiceReport),
        body: body,
      );

      stateCode = response.statusCode;
      if (response.statusCode >= 200 && response.statusCode < 300) {
        reset();
        notifyListeners();
      }
      return response.statusCode;
    } catch (error) {
      return -1;
    }
  }

  Future<int> createDuplicatedReport({
    required String host,
    required User user,
    required ServiceRequest request,
  }) async {
    Response response;
    String userData = '';
    userData += "&uid=${user.id}";
    userData += "&token=${user.token}";

    try {
      response = await get(
        Uri.parse(
          "$host${URLs.createDuplicatedReport}?nid=${request.id}$userData",
        ),
      );

      stateCode = response.statusCode;

      if (response.statusCode >= 200 && response.statusCode < 300) {
        reset();
        notifyListeners();
      }
      return response.statusCode;
    } catch (error) {
      return -1;
    }
  }

  Future<int> updateServiceReport({
    required String host,
    required User user,
    required ServiceReport report,
    required ServiceRequest request,
  }) async {
    Response response;
    Map<String, String> body = report.toMap();
    body["uid"] = user.id ?? "";
    body["token"] = user.token ?? "";
    body["job_id"] = request.id ?? '';
    body["report_id"] = request.reportID ?? '';
    try {
      response = await post(
        Uri.parse(host + URLs.updateServiceReport),
        body: body,
      );
      stateCode = response.statusCode;

      if (response.statusCode >= 200 && response.statusCode < 300) {
        reset();
        notifyListeners();
      }
      return response.statusCode;
    } catch (error) {
      return -1;
    }
  }

  Future<int> updateServiceReportTimer({
    required String host,
    required User user,
    required TimerModel timer,
    required ServiceRequest request,
  }) async {
    Response response;
    Map<String, String> body = {};
    body["uid"] = user.id ?? "";
    body["token"] = user.token ?? "";
    body["job_id"] = request.id ?? '';
    body["start_time"] = ((timer.startAt?.millisecondsSinceEpoch ?? 0) / 1000).toStringAsFixed(0);
    body["end_time"] = ((timer.endAt?.millisecondsSinceEpoch ?? 0) / 1000).toStringAsFixed(0);
    body["working_hours"] = ((timer.durationInSecond ?? 0) / 60 / 60).toStringAsFixed(5);
    body["report_id"] = request.reportID ?? '';
    try {
      response = await post(
        Uri.parse(host + URLs.updateServiceReport),
        body: body,
      );
      //stateCode = response.statusCode;

      if (response.statusCode >= 200 && response.statusCode < 300) {
        // reset();
        // notifyListeners();
      }
      return response.statusCode;
    } catch (error) {
      return -1;
    }
  }

  Future<ServiceReport> getSingleServiceReport({
    required String reportId,
    required String host,
    required User user,
    required Subtitle subtitle,
  }) async {
    String userData = '';
    userData += "&uid=${user.id}";
    userData += "&token=${user.token}";

    Response response;
    try {
      response = await get(Uri.parse(
        '$host${URLs.getServiceReport}?report_id=$reportId$userData',
      ));
    } catch (error) {
      throw (HttpStatusManger.getStatusMessage(status: -1, subtitle: subtitle) ?? '');
    }

    // If the call to the server was successful, parse the JSON.
    if (response.statusCode >= 200 && response.statusCode < 300) {
      // If the call to the server was successful, parse the JSON.
      return ServiceReport.fromJson(json.decode(utf8.decode(response.bodyBytes)), reportId);
    } else {
      throw (HttpStatusManger.getStatusMessage(
            status: response.statusCode,
            subtitle: subtitle,
          ) ??
          '');
    }
  }
}