cloudsolutions-atoms/lib/modules/alerts/alert_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/modules/alerts/alert_model.dart';

class AlertProvider extends ChangeNotifier {
  final pageItemNumber = 12;

  void reset() {
    items = null;
    nextPage = true;
    stateCode = null;
  }

  int? stateCode;

  bool nextPage = true;

  List<AlertModel>? items;

  bool isLoading = false;

  AlertModel? alertModel;

  Future<int> getAlerts() async {
    if (isLoading == true) return -2;
    isLoading = true;
    if (items?.isEmpty ?? true) notifyListeners();
    late Response response;

    Map<String, dynamic> body = {};
    body["pageNumber"] = (items?.length ?? 0) ~/ pageItemNumber + 1;
    body["pageSize"] = pageItemNumber;

    try {
      response = await ApiManager.instance.post(URLs.getAlerts, body: body);
      stateCode = response.statusCode;
      if (stateCode! >= 200 && stateCode! < 300) {
        final decoded = json.decode(response.body);
        final List requestsListJson = (decoded is Map && decoded.containsKey('data')) ? decoded['data'] : decoded;
        List<AlertModel> itemsPage = requestsListJson.map((request) => AlertModel.fromJson(request)).toList();
        items ??= [];
        items!.addAll(itemsPage);
        nextPage = itemsPage.length == pageItemNumber;
      }
      isLoading = false;
      notifyListeners();
      return response.statusCode;
    } catch (error) {
      isLoading = false;
      stateCode = -1;
      notifyListeners();
      return -1;
    }
  }

  Future<AlertModel?> getAlertById(num id, {bool refresh = false}) async {
    if (refresh) {
      return alertModel;
    }
    try {
      alertModel = null;
      Response response = await ApiManager.instance.get("${URLs.getAlertById}/$id");
      if (response.statusCode >= 200 && response.statusCode < 300) {
        final decoded = json.decode(response.body);
        final Map<String, dynamic> dataNode = (decoded is Map && decoded.containsKey('data')) ? decoded['data'] : decoded;
        alertModel = AlertModel.fromJson(dataNode);
        notifyListeners();
        return alertModel;
      }
      return null;
    } catch (error) {
      return null;
    }
  }

  Future<bool> resolveAlert(num id) async {
    try {
      Response response = await ApiManager.instance.post(URLs.resolveAlert, body: {"id": id});
      if (response.statusCode >= 200 && response.statusCode < 300) {
        if (items != null) {
          reset();
          notifyListeners();
        }
        return true;
      }
      return false;
    } catch (error) {
      return false;
    }
  }
}