wesal/frontend/lib/services/invitations_service.dart

import 'dart:convert';
import '../constants/api_constants.dart';
import '../models/invitation_models.dart';
import 'http_service.dart';
import 'auth_service.dart';

class InvitationsService {
  static Future<Map<String, dynamic>> getAllInvitations() async {
    try {
      final response = await HttpService.get(
        ApiConstants.getAllInvitationsEndpoint,
      );

      if (response.statusCode == 200) {
        final responseData = jsonDecode(response.body);
        final invitationsResponse = InvitationsResponse.fromJson(responseData);

        if (invitationsResponse.status) {
          return {'success': true, 'data': invitationsResponse.data};
        } else {
          return {
            'success': false,
            'message':
                invitationsResponse.message ?? 'Failed to fetch invitations',
          };
        }
      } else if (response.statusCode == 401 || response.statusCode == 403) {
        await AuthService.handleAuthenticationError();
        return {
          'success': false,
          'message': 'Session expired. Please login again.',
        };
      } else {
        return {
          'success': false,
          'message': 'Server error (${response.statusCode})',
        };
      }
    } catch (e) {
      print('Error fetching invitations: $e');
      return {
        'success': false,
        'message': 'Network error. Please check your connection.',
      };
    }
  }

  static Future<Map<String, dynamic>> acceptInvitation(int invitationId) async {
    try {
      final response = await HttpService.post(
        ApiConstants.acceptInvitationEndpoint,
        {'id': invitationId},
      );

      if (response.statusCode == 200) {
        final responseData = jsonDecode(response.body);
        return {
          'success': responseData['status'] ?? false,
          'message': responseData['message'] ?? 'Request completed',
        };
      } else if (response.statusCode == 401) {
        return {
          'success': false,
          'message': 'Session expired. Please login again.',
        };
      } else if (response.statusCode == 403) {
        return {
          'success': false,
          'message': 'Access denied. Invalid credentials.',
        };
      } else {
        return {
          'success': false,
          'message': 'Server error (${response.statusCode})',
        };
      }
    } catch (e) {
      print('Error accepting invitation: $e');
      return {
        'success': false,
        'message': 'Network error. Please check your connection.',
      };
    }
  }

  static Future<Map<String, dynamic>> createInvitation(Map<String, dynamic> invitationData) async {
    try {
      final response = await HttpService.post(
        ApiConstants.createInvitationEndpoint,
        invitationData,
      );

      if (response.statusCode == 200) {
        final responseData = jsonDecode(response.body);
        if (responseData['status'] == true) {
          return {
            'success': true,
            'data': responseData['data'],
            'message': responseData['message'],
          };
        } else {
          return {
            'success': false,
            'message': responseData['message'] ?? 'Failed to create invitation',
          };
        }
      } else if (response.statusCode == 401) {
        return {
          'success': false,
          'message': 'Session expired. Please login again.',
        };
      } else if (response.statusCode == 403) {
        return {
          'success': false,
          'message': 'Access denied. Invalid credentials.',
        };
      } else {
        return {
          'success': false,
          'message': 'Server error (${response.statusCode})',
        };
      }
    } catch (e) {
      print('Error creating invitation: $e');
      return {
        'success': false,
        'message': 'Network error. Please check your connection.',
      };
    }
  }

  static Future<Map<String, dynamic>> getInvitationDetails(int invitationId) async {
    try {
      final response = await HttpService.get(
        '${ApiConstants.invitationsEndpoint}/get?id=$invitationId',
      );

      if (response.statusCode == 200) {
        final responseData = jsonDecode(response.body);
        if (responseData['status'] == true) {
          final invitationDetails = InvitationDetails.fromJson(responseData['data']);
          return {
            'success': true,
            'data': invitationDetails,
          };
        } else {
          return {
            'success': false,
            'message': responseData['message'] ?? 'Failed to get invitation details',
          };
        }
      } else if (response.statusCode == 401) {
        return {
          'success': false,
          'message': 'Session expired. Please login again.',
        };
      } else if (response.statusCode == 403) {
        return {
          'success': false,
          'message': 'Access denied. Invalid credentials.',
        };
      } else {
        return {
          'success': false,
          'message': 'Server error (${response.statusCode})',
        };
      }
    } catch (e) {
      print('Error getting invitation details: $e');
      return {
        'success': false,
        'message': 'Network error. Please check your connection.',
      };
    }
  }

  static Future<Map<String, dynamic>> cancelInvitation(int invitationId) async {
    try {
      final response = await HttpService.post(
        '${ApiConstants.invitationsEndpoint}/cancel',
        {'id': invitationId},
      );

      if (response.statusCode == 200) {
        final responseData = jsonDecode(response.body);
        return {
          'success': responseData['status'] ?? false,
          'message': responseData['message'] ?? 'Request completed',
        };
      } else if (response.statusCode == 401) {
        return {
          'success': false,
          'message': 'Session expired. Please login again.',
        };
      } else if (response.statusCode == 403) {
        return {
          'success': false,
          'message': 'Access denied. Invalid credentials.',
        };
      } else {
        return {
          'success': false,
          'message': 'Server error (${response.statusCode})',
        };
      }
    } catch (e) {
      print('Error canceling invitation: $e');
      return {
        'success': false,
        'message': 'Network error. Please check your connection.',
      };
    }
  }
}