doctor_app_flutter/lib/client/base_app_client.dart

import 'dart:convert';

import 'package:doctor_app_flutter/config/config.dart';
import 'package:doctor_app_flutter/config/shared_pref_kay.dart';
import 'package:doctor_app_flutter/models/doctor/doctor_profile_model.dart';
import 'package:doctor_app_flutter/util/dr_app_shared_pref.dart';
import 'package:doctor_app_flutter/util/helpers.dart';
import 'package:http/http.dart' as http;

DrAppSharedPreferances sharedPref = new DrAppSharedPreferances();
Helpers helpers = new Helpers();
//ProjectProvider projectsProvider = new ProjectProvider();

/*
 *@author: Mohammad Aljammal
 *@Date:28/5/2020
 *@param: url, onSuccess callBack, onFailure callBack
 *@return:
 *@desc:
 */

///Example
/*
 await BaseAppClient.post('',
        onSuccess: (dynamic response, int statusCode) {},
        onFailure: (String error, int statusCode) {},
    body: null);
* */
class BaseAppClient {
  //TODO change the post fun to nun static when you change all service
  post(
    String endPoint, {
    Map<String, dynamic> body,
    Function(dynamic response, int statusCode) onSuccess,
    Function(String error, int statusCode) onFailure,
  }) async {
    String url = BASE_URL + endPoint;
    try {
      Map profile = await sharedPref.getObj(DOCTOR_PROFILE);
      String token = await sharedPref.getString(TOKEN);
      if (profile != null) {
        DoctorProfileModel doctorProfile = DoctorProfileModel.fromJson(profile);
        if (body['DoctorID'] == null)
          body['DoctorID'] = doctorProfile?.doctorID;
        if (body['DoctorID'] == "") body['DoctorID'] = null;
        if (body['EditedBy'] == null)
          body['EditedBy'] = doctorProfile?.doctorID;
        if (body['ProjectID'] == null) {
          body['ProjectID'] = doctorProfile?.projectID;
        }
        if (body['ClinicID'] == null)
          body['ClinicID'] = doctorProfile?.clinicID;
      }
      if (body['DoctorID'] == '') {
        body['DoctorID'] = null;
      }
      if (body['EditedBy'] == '') {
        body.remove("EditedBy");
      }
      body['TokenID'] = token ?? '';
      String lang = await sharedPref.getString(APP_Language);
      if (lang != null && lang == 'ar')
        body['LanguageID'] = 1;
      else
        body['LanguageID'] = 2;

      body['stamp'] = STAMP;
      body['IPAdress'] = IP_ADDRESS;
      body['VersionID'] = VERSION_ID;
      body['Channel'] = CHANNEL;
      body['SessionID'] = SESSION_ID;
      body['IsLoginForDoctorApp'] = IS_LOGIN_FOR_DOCTOR_APP;
      body['PatientOutSA'] = body['PatientOutSA']??0; // PATIENT_OUT_SA;
      if (body['VidaAuthTokenID'] == null) {
        body['VidaAuthTokenID'] =
            await sharedPref.getString(VIDA_AUTH_TOKEN_ID);
      }
      if (body['VidaRefreshTokenID'] == null) {
        body['VidaRefreshTokenID'] =
            await sharedPref.getString(VIDA_REFRESH_TOKEN_ID);
      }

      print("URL : $url");
      print("Body : ${json.encode(body)}");

      if (await Helpers.checkConnection()) {
        final response = await http.post(url,
            body: json.encode(body),
            headers: {
              'Content-Type': 'application/json',
              'Accept': 'application/json'
            });
        final int statusCode = response.statusCode;
        if (statusCode < 200 || statusCode >= 400) {
          onFailure('Error While Fetching data', statusCode);
        } else {
          var parsed = json.decode(response.body.toString());
          if (!parsed['IsAuthenticated']) {
            // onFailure(getError(parsed), statusCode);
            await helpers.logout();
            helpers.showErrorToast('Your session expired Please login agian');
          } else if (parsed['MessageStatus'] == 1) {
            if (!parsed['IsAuthenticated'])
              onFailure(getError(parsed), statusCode);
            else
              onSuccess(parsed, statusCode);
          } else {
            onFailure(getError(parsed), statusCode);
          }
        }
      } else {
        onFailure('Please Check The Internet Connection', -1);
      }
    } catch (e) {
      print(e);
      onFailure(e.toString(), -1);
    }
  }

  String getError(parsed) {
    //TODO change this fun
    String error = parsed['ErrorEndUserMessage'] ?? parsed['ErrorMessage'];
    if (parsed["ValidationErrors"] != null) {
      error = parsed["ValidationErrors"]["StatusMessage"].toString() + "\n";

      if (parsed["ValidationErrors"]["ValidationErrors"] != null &&
          parsed["ValidationErrors"]["ValidationErrors"].length != 0) {
        for (var i = 0;
            i < parsed["ValidationErrors"]["ValidationErrors"].length;
            i++) {
          error = error +
              parsed["ValidationErrors"]["ValidationErrors"][i]["Messages"][0] +
              "\n";
        }
      }
    }
    if (error == null || error == "null" || error == "null\n") {
      return "This server not work probably in this time";
    }
    return error;
  }
}