tm_app/lib/view_models/tenders_view_model.dart

import 'dart:developer';

import 'package:flutter/material.dart';
import 'package:tm_app/data/repositories/tenders_repository.dart';
import 'package:tm_app/data/services/model/feedback_data/feedback_data.dart';
import 'package:tm_app/data/services/model/feedback_response/feedback_response.dart';
import 'package:tm_app/data/services/model/tender/tender_model.dart';
import 'package:tm_app/data/services/model/tenders/tenders_response/tenders_response.dart';

import '../core/utils/result.dart';

class TendersViewModel with ChangeNotifier {
  final TendersRepository _tendersRepository;

  TendersViewModel({required TendersRepository tendersRepository})
    : _tendersRepository = tendersRepository {
    WidgetsBinding.instance.addPostFrameCallback((_) {
      getTenders();
    });
  }

  bool _isLoading = false;
  String? _errorMessage;
  TendersResponse? _tendersResponse;
  FeedbackData? _feedbackData;

  bool get isLoading => _isLoading;
  String? get errorMessage => _errorMessage;
  TendersResponse? get tendersResponse => _tendersResponse;
  FeedbackData? get feedbackData => _feedbackData;

  List<FeedbackData> feedbacks = [];

  int currentPage = 1;

  /// Get feedback for a specific tender
  FeedbackData? getFeedbackForTender(String tenderId) {
    try {
      return feedbacks.firstWhere((f) => f.tender == tenderId);
    } catch (e) {
      return null;
    }
  }

  /// Check if feedback exists for a specific tender
  bool hasFeedbackForTender(String tenderId) {
    return feedbacks.any((f) => f.tender == tenderId);
  }

  Future<void> getTenders() async {
    _isLoading = true;
    _errorMessage = null;
    notifyListeners();

    final result = await _tendersRepository.getTenders();
    switch (result) {
      case Ok<TendersResponse>():
        _tendersResponse = result.value;
        getTenderFeedback(_tendersResponse!.data!.tenders!.first.id!);
        break;
      case Error<TendersResponse>():
        _errorMessage = result.error.toString();
        break;
    }
    _isLoading = false;
    notifyListeners();
    _errorMessage = null;
    notifyListeners();
  }

  Future<void> getTenderFeedback(String tenderId) async {
    // _isLoading = true;
    _errorMessage = null;
    notifyListeners();

    final result = await _tendersRepository.getTenderFeedback(
      tenderId: tenderId,
    );
    switch (result) {
      case Ok<FeedbackResponse>():
        _feedbackData = result.value.data;
        // Add or update _feedbackData in feedbacks list by tender id
        if (_feedbackData != null) {
          final index = feedbacks.indexWhere(
            (f) => f.tender == _feedbackData!.tender,
          );
          if (index != -1) {
            feedbacks[index] = _feedbackData!;
            log('Updated feedback for tender: ${_feedbackData!.tender}');
          } else {
            feedbacks.add(_feedbackData!);
            log('Added new feedback for tender: ${_feedbackData!.tender}');
          }
          log('Total feedbacks: ${feedbacks.length}');
        }
        break;
      case Error<FeedbackResponse>():
        _errorMessage = result.error.toString();
        break;
    }
    // _isLoading = false;
    notifyListeners();
    _errorMessage = null;
    notifyListeners();
  }

  Future<void> feedback({
    required String tenderId,
    required String feedbackType,
  }) async {
    _errorMessage = null;
    notifyListeners();

    final result = await _tendersRepository.feedback(
      tenderId: tenderId,
      feedbackType: feedbackType,
    );
    switch (result) {
      case Ok<FeedbackResponse>():
        _feedbackData = result.value.data;
        if (_feedbackData != null) {
          final index = feedbacks.indexWhere(
            (f) => f.tender == _feedbackData!.tender,
          );
          if (index != -1) {
            feedbacks[index] = _feedbackData!;
          } else {
            feedbacks.add(_feedbackData!);
          }
        }
        break;
      case Error<FeedbackResponse>():
        _errorMessage = result.error.toString();
        break;
    }
    notifyListeners();
    _errorMessage = null;
    notifyListeners();
  }

  /// Updates a tender's state in the list
  void _updateTenderState(
    String tenderId, {
    bool? liked,
    bool? disliked,
    bool? rejected,
    bool? submitted,
  }) {
    // if (_tendersResponse?.tendersData?.tenders != null) {
    //   final updatedTenders =
    //       _tendersResponse!.tendersData!.tenders!.map((element) {
    //         if (element.tenderId == tenderId) {
    //           return element.copyWith(
    //             liked: liked,
    //             disliked: disliked,
    //             rejected: rejected,
    //             submitted: submitted,
    //           );
    //         }
    //         return element;
    //       }).toList();

    //   _tendersResponse = _tendersResponse!.copyWith(
    //     tendersData: _tendersResponse!.tendersData!.copyWith(
    //       tenders: updatedTenders,
    //     ),
    //   );
    // }
  }

  /// Sets a tender as liked
  Future<void> markLiked(TenderModel tender) async {
    // _updateTenderState(
    //   tender.id!,
    //   liked: true,
    //   disliked: false,
    //   rejected: false,
    //   submitted: tender.submitted,
    // );
    // notifyListeners();
    // final result = await _tendersRepository.likeTender();
    // switch (result) {
    //   case Ok<TenderLikeResponse>():
    //     break;
    //   case Error<TenderLikeResponse>():
    //     break;
    // }
  }

  /// Sets a tender as disliked
  Future<void> markDisliked(TenderModel tender) async {
    // _updateTenderState(
    //   tender.tenderId!,
    //   disliked: true,
    //   liked: false,
    //   rejected: tender.rejected,
    //   submitted: false,
    // );
    // notifyListeners();
    // final result = await _tendersRepository.dislikeTender();
    // switch (result) {
    //   case Ok<TenderDislikeResponse>():
    //     break;
    //   case Error<TenderDislikeResponse>():
    //     break;
    // }
  }

  /// Sets a tender as rejected
  Future<void> markRejected(TenderModel tender) async {
    // _updateTenderState(
    //   tender.tenderId!,
    //   rejected: true,
    //   liked: false,
    //   disliked: tender.disliked,
    //   submitted: false,
    // );
    // notifyListeners();
    // final result = await _tendersRepository.rejectTender();
    // switch (result) {
    //   case Ok<TenderRejectResponse>():
    //     break;
    //   case Error<TenderRejectResponse>():
    //     break;
    // }
  }

  /// Sets a tender as submitted
  Future<void> markSubmitted(TenderModel tender) async {
    // _updateTenderState(
    //   tender.tenderId!,
    //   submitted: true,
    //   liked: tender.liked,
    //   disliked: false,
    //   rejected: false,
    // );
    // notifyListeners();
    // final result = await _tendersRepository.submitTender();
    // switch (result) {
    //   case Ok<TenderSubmitResponse>():
    //     break;
    //   case Error<TenderSubmitResponse>():
    //     break;
    // }
  }

  /// Clears a specific state for a tender
  void clearTenderState(
    TenderModel tenderModel, {
    bool? isLiked,
    bool? isDisliked,
    bool? isRejected,
    bool? isSubmitted,
  }) {
    // _updateTenderState(
    //   tenderModel.tenderId!,
    //   liked: isLiked ?? tenderModel.liked,
    //   disliked: isDisliked ?? tenderModel.disliked,
    //   rejected: isRejected ?? tenderModel.rejected,
    //   submitted: isSubmitted ?? tenderModel.submitted,
    // );
  }

  /// Toggles like state for a tender
  void toggleLike(TenderModel tender) {
    // if (tender.liked == true) {
    //   clearTenderState(tender, isLiked: false);
    // } else {
    //   markLiked(tender);
    // }
    // notifyListeners();
  }

  /// Toggles dislike state for a tender
  void toggleDislike(TenderModel tender) {
    // if (tender.disliked == true) {
    //   clearTenderState(tender, isDisliked: false);
    // } else {
    //   markDisliked(tender);
    // }
    // notifyListeners();
  }

  /// Toggles reject state for a tender
  void toggleReject(TenderModel tender) {
    // if (tender.rejected == true) {
    //   clearTenderState(tender, isRejected: false);
    // } else {
    //   markRejected(tender);
    // }
    // notifyListeners();
  }

  /// Toggles submit state for a tender
  void toggleSubmit(TenderModel tender) {
    // if (tender.submitted == true) {
    //   clearTenderState(tender, isSubmitted: false);
    // } else {
    //   markSubmitted(tender);
    // }
    // notifyListeners();
  }
}