cloudsolutions-atoms/lib/controllers/providers/api/user_provider.dart

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:http/http.dart';
import 'package:test_sa/controllers/api_routes/api_manager.dart';
import 'package:test_sa/controllers/api_routes/urls.dart';
import 'package:test_sa/models/user.dart';

class UserProvider extends ChangeNotifier{

  //reset provider data
  void reset(){
    _user = null;
    ApiManager.instance.user = user;
    _loading = false;
  }

  // contain user data
  // when user not login or register _user = null
  User _user;
  User get user => _user;
  set user(User user) {
    _user = user;
    ApiManager.instance.user = user;
    notifyListeners();
  }


  // when login or register in-process _login = true
  // when login or register is done or not start = false
  bool _loading = false;
  bool get isLoading => _loading;
  set isLoading(bool isLoading) {
    _loading = isLoading;
    notifyListeners();
  }

  /// sign in with user - need (email or phone) and password;
  /// 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> login ({
    @required String host,
    @required User user,
  }) async {
    if(_loading == true)
      return -2;
    _loading = true;
    notifyListeners();
    Response response;
    try{
      response = await ApiManager.instance.post(
          URLs.login,
          body: await user.toLoginJson(),
      );
      _loading = false;
      if(response.statusCode >= 200 && response.statusCode < 300) {
        // client's request was successfully received
        _user = User.fromJson(jsonDecode(response.body));

        return response.statusCode;
      }
      notifyListeners();
      return response.statusCode;
    } catch(error) {
      _loading = false;
      notifyListeners();
      return -1;
    }
  }

  /// sign up with User object;
  /// 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 about state codes check http state manager
  /// lib\controllers\http_status_manger\http_status_manger.dart
  Future<int> register ({
    @required String host,
    @required User user,
  }) async {
    if(_loading == true)
      return -2;
    _loading = true;
    notifyListeners();
    Response response;
    try{
      response = await ApiManager.instance.post(
        URLs.register,
        body: await user.toLoginJson(),
      );
    } catch(error) {
      _loading = false;
      notifyListeners();
      return -1;
    }
    _loading = false;
    notifyListeners();
    if(response.statusCode >= 200 && response.statusCode < 300) {
      // client's request was successfully received
      _user = User.fromJson(jsonDecode(utf8.decode(response.bodyBytes))[0]);
      _user.hospital = user.hospital;
      notifyListeners();
      return response.statusCode;
    }
    return response.statusCode;
  }

  /// sign up with User object;
  /// 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 about state codes check http state manager
  /// lib\controllers\http_status_manger\http_status_manger.dart
  Future<int> updateProfile ({
    @required String host,
    @required User user,
  }) async {
    if(_loading == true)
      return -2;
    _loading = true;
    notifyListeners();
    Response response;

    Map<String,dynamic> jsonObject ={};
    jsonObject["uid"] = user.id;
    jsonObject["token"] = user.token;
    if(user.department.id != _user.department.id)
      jsonObject["department"] = user.department.id;
    if(user.whatsApp != _user.whatsApp)
      jsonObject["whatsapp"] = user.whatsApp;
    if(user.phoneNumber != _user.phoneNumber)
      jsonObject["phone"] = user.phoneNumber;
    try{
      response = response = await ApiManager.instance.post(
        URLs.login,
        body: jsonObject,
      );
    } catch(error) {
      _loading = false;
      notifyListeners();
      return -1;
    }

    _loading = false;
    notifyListeners();

    if(response.statusCode >= 200 && response.statusCode < 300) {
      // client's request was successfully received
      _user = User.fromJson(jsonDecode(utf8.decode(response.bodyBytes))[0]);
      _user.hospital = user.hospital;
      _user.department = user.department;
      notifyListeners();
      return response.statusCode;
    }
    return response.statusCode;
  }

}