feat: Refactor code structure and optimize performance across multiple modules

mobile-apps/staff-app/lib/features/profile/emergency_contacts/data/emergency_contact_api_provider.dart

@@ -0,0 +1,61 @@
+import 'package:injectable/injectable.dart';
+import 'package:krow/core/application/clients/api/api_client.dart';
+import 'package:krow/features/profile/emergency_contacts/data/gql_schemas.dart';
+import 'package:krow/features/profile/emergency_contacts/data/models/emergency_contact_model.dart';
+
+@injectable
+class EmergencyContactApiProvider {
+  final ApiClient _apiClient;
+
+  EmergencyContactApiProvider(this._apiClient);
+
+  Stream<List<EmergencyContactModel>> getStaffEmergencyContacts() async* {
+    await for (var response in _apiClient.queryWithCache(
+      schema: getEmergencyContactsQuerySchema,
+    )) {
+      if (response == null || response.data == null) continue;
+
+      if (response.data == null || response.data!.isEmpty) {
+        if (response.source?.name == 'cache') continue;
+
+        if (response.hasException) {
+          throw Exception(response.exception.toString());
+        }
+      }
+
+      final contactsData =
+          (response.data?['me'] as Map<String, dynamic>?)?['emergency_contacts']
+                  as List<dynamic>? ??
+              [];
+
+      yield [
+        for (final contact in contactsData)
+          EmergencyContactModel.fromJson(
+            contact as Map<String, dynamic>? ?? {},
+          ),
+      ];
+    }
+  }
+
+  Future<List<EmergencyContactModel>?> updateEmergencyContacts(
+    List<EmergencyContactModel> contacts,
+  ) async {
+    var result = await _apiClient.mutate(
+      schema: updateEmergencyContactsMutationSchema,
+      body: {
+        'input': [
+          for (final contact in contacts) contact.toJson(),
+        ],
+      },
+    );
+
+    if (result.hasException) {
+      throw Exception(result.exception.toString());
+    }
+
+    if (result.data == null || result.data!.isEmpty) return null;
+
+    //TODO(Heorhii) add contacts return
+    return null;
+  }
+}

mobile-apps/staff-app/lib/features/profile/emergency_contacts/data/emergency_contact_repository.dart

@@ -0,0 +1,9 @@
+import 'package:krow/features/profile/emergency_contacts/data/models/emergency_contact_model.dart';
+
+abstract class EmergencyContactRepository {
+  Stream<List<EmergencyContactModel>> getStaffEmergencyContacts();
+
+  Future<List<EmergencyContactModel>?> updateEmergencyContacts(
+    List<EmergencyContactModel> contacts,
+  );
+}

mobile-apps/staff-app/lib/features/profile/emergency_contacts/data/gql_schemas.dart

@@ -0,0 +1,26 @@
+const String getEmergencyContactsQuerySchema = r'''
+query StaffEmergencyContacts {
+  me {
+    id
+    emergency_contacts {
+      id
+      first_name
+      last_name
+      phone
+    }
+  }
+}
+''';
+
+const String updateEmergencyContactsMutationSchema = r'''
+mutation SaveEmergencyContacts ($input: [CreateStaffEmergencyContactsInput!]) {
+  attach_staff_emergency_contacts(contacts: $input) {
+    emergency_contacts {
+      id
+      first_name
+      last_name
+      phone
+    }
+  }
+}
+''';

mobile-apps/staff-app/lib/features/profile/emergency_contacts/data/models/emergency_contact_model.dart

@@ -0,0 +1,58 @@
+import 'package:flutter/foundation.dart';
+
+@immutable
+final class EmergencyContactModel {
+  const EmergencyContactModel({
+    this.contactId,
+    required this.firstName,
+    required this.lastName,
+    required this.phoneNumber,
+  });
+
+  const EmergencyContactModel.empty({
+    this.contactId,
+    this.firstName = '',
+    this.lastName = '',
+    this.phoneNumber = '',
+  });
+
+  factory EmergencyContactModel.fromJson(Map<String, dynamic> json) {
+    return EmergencyContactModel(
+      contactId: json['id'] as String?,
+      firstName: json['first_name'] as String? ?? '',
+      lastName: json['last_name'] as String? ?? '',
+      phoneNumber: json['phone'] as String? ?? '',
+    );
+  }
+
+  final String? contactId;
+  final String firstName;
+  final String lastName;
+  final String phoneNumber;
+
+  bool get isFilled =>
+      firstName.isNotEmpty && lastName.isNotEmpty && phoneNumber.isNotEmpty;
+
+  EmergencyContactModel copyWith({
+    String? contactId,
+    String? firstName,
+    String? lastName,
+    String? phoneNumber,
+    bool? isSaved,
+  }) {
+    return EmergencyContactModel(
+      contactId: contactId ?? this.contactId,
+      firstName: firstName ?? this.firstName,
+      lastName: lastName ?? this.lastName,
+      phoneNumber: phoneNumber ?? this.phoneNumber,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'first_name': firstName,
+      'last_name': lastName,
+      'phone': phoneNumber,
+    };
+  }
+}