demo/xinhuaribao/lib/provider/user_favorite_provider.dart

import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:news_app/extension/base.dart';
import 'package:news_app/model/activity_model.dart';
import 'package:news_app/model/news_data_model.dart';

import '../constant/api_const.dart';
import '../http/http_util.dart';
import '../http/model_parser.dart';
import '../model/video_new_model.dart';

/// @author: bo.zeng
/// @email: cnhbwds@gmail.com
/// @date: 2025 2025/4/22 16:03
/// @description:

class FavoriteNewsProvider extends Notifier<UserNews> {
  @override
  UserNews build() {
    return UserNews();
  }

  //文章）cms_content,（活动）cms_content_activity,（视频）cms_content_video
  Future<void> fetchUserFavorite({required int pageNum}) async {
    final jsonData = await HttpUtil().get(
      apiMemberFavorite,
      queryParameters: {
        "type": "cms_content",
        "pageSize": 10.toString(),
        "pageNum": pageNum.toString(),
      },
    );
    final response = ModelParser.parseObject<UserNews>(
      jsonData,
      UserNews.fromJson,
    );
    state.total = response.total;
    if (pageNum == 0) {
      state = response;
    } else {
      //把新的列表添加到旧的列表中
      state = UserNews(
        total: response.total,
        rows: [...state.rows ?? [], ...response.rows ?? []],
      );
    }
  }

  void removeItemByContentId(String contentId) {
    final List<NewsRecord?>? currentRows = state.rows;
    if (currentRows == null) return;

    // 过滤掉 contentId 相同的项
    final List<NewsRecord?> newRows = currentRows
        .where((item) => item?.contentId != contentId)
        .toList();

    // 如果过滤后的列表长度与原列表一致，说明没有匹配项，无需更新状态
    if (newRows.length == currentRows.length) return;

    // 更新 total 并设置新的 state
    state = UserNews(
      total: (state.total ?? 0) - 1, // total 减 1
      rows: newRows,
    );
  }

}

class FavoriteActivityProvider extends Notifier<UserActivity> {
  @override
  UserActivity build() {
    return UserActivity();
  }

  //文章）cms_content,（活动）cms_content_activity,（视频）cms_content_video
  Future<void> fetchUserActivity({required int pageNum}) async {
    final jsonData = await HttpUtil().get(
      apiMemberFavorite,
      queryParameters: {
        "type": "cms_content_activity",
        "pageSize": 10.toString(),
        "pageNum": pageNum.toString(),
      },
    );
    final response = ModelParser.parseObject<UserActivity>(
      jsonData,
      UserActivity.fromJson,
    );
    state.total = response.total;
    if (pageNum == 0) {
      state = response;
    } else {
      //把新的列表添加到旧的列表中
      state = UserActivity(
        total: response.total,
        rows: [...state.rows ?? [], ...response.rows ?? []],
      );
    }
  }

  void removeItemByContentId(String contentId) {
    final List<ActivityModelRecord?>? currentRows = state.rows;
    if (currentRows == null) return;

    // 过滤掉 contentId 相同的项
    final List<ActivityModelRecord?> newRows = currentRows
        .where((item) => item?.contentId != contentId)
        .toList();

    // 如果过滤后的列表长度与原列表一致，说明没有匹配项，无需更新状态
    if (newRows.length == currentRows.length) return;

    // 更新 total 并设置新的 state
    state = UserActivity(
      total: (state.total ?? 0) - 1, // total 减 1
      rows: newRows,
    );
  }

}

class FavoriteVideoProvider extends Notifier<UserVideo> {
  @override
  UserVideo build() {
    return UserVideo();
  }

  //文章）cms_content,（活动）cms_content_activity,（视频）cms_content_video
  Future<void> fetchUserVideo({required int pageNum}) async {
    final jsonData = await HttpUtil().get(
      apiMemberFavorite,
      queryParameters: {
        "type": "cms_content_video",
        "pageSize": 10.toString(),
        "pageNum": pageNum.toString(),
      },
    );
    final response = ModelParser.parseObject<UserVideo>(
      jsonData,
      UserVideo.fromJson,
    );
    state.total = response.total;
    if (pageNum == 0) {
      state = response;
    } else {
      //把新的列表添加到旧的列表中
      state = UserVideo(
        total: response.total,
        rows: [...state.rows ?? [], ...response.rows ?? []],
      );
    }
  }

  void removeItemByContentId(String contentId) {
    final List<VideoNewModel?>? currentRows = state.rows;
    if (currentRows == null) return;

    // 过滤掉 contentId 相同的项
    final List<VideoNewModel?> newRows = currentRows
        .where((item) => item?.contentId != contentId)
        .toList();

    // 如果过滤后的列表长度与原列表一致，说明没有匹配项，无需更新状态
    if (newRows.length == currentRows.length) return;

    // 更新 total 并设置新的 state
    state = UserVideo(
      total: (state.total ?? 0) - 1, // total 减 1
      rows: newRows,
    );
  }
}

class UserNews {
  List<NewsRecord?>? rows;
  int? total;

  UserNews({this.rows, this.total});

  UserNews.fromJson(Map<String, dynamic> json) {
    if (json['rows'] != null) {
      final v = json['rows'];
      final arr0 = <NewsRecord>[];
      v.forEach((v) {
        arr0.add(NewsRecord.fromJson(v));
      });
      rows = arr0;
    }
    total = json['total']?.toString().convertInt;
  }

  Map<String, dynamic> toJson() {
    final data = <String, dynamic>{};
    if (rows != null) {
      final v = rows;
      final arr0 = [];
      for (var v in v!) {
        arr0.add(v!.toJson());
      }
      data['rows'] = arr0;
    }
    data['total'] = total;
    return data;
  }
}

class UserActivity {
  List<ActivityModelRecord?>? rows;
  int? total;

  UserActivity({this.rows, this.total});

  UserActivity.fromJson(Map<String, dynamic> json) {
    if (json['rows'] != null) {
      final v = json['rows'];
      final arr0 = <ActivityModelRecord>[];
      v.forEach((v) {
        arr0.add(ActivityModelRecord.fromJson(v));
      });
      rows = arr0;
    }
    total = json['total']?.toString().convertInt;
  }

  Map<String, dynamic> toJson() {
    final data = <String, dynamic>{};
    if (rows != null) {
      final v = rows;
      final arr0 = [];
      for (var v in v!) {
        arr0.add(v!.toJson());
      }
      data['rows'] = arr0;
    }
    data['total'] = total;
    return data;
  }
}

class UserVideo {
  List<VideoNewModel?>? rows;
  int? total;

  UserVideo({this.rows, this.total});

  UserVideo.fromJson(Map<String, dynamic> json) {
    if (json['rows'] != null) {
      final v = json['rows'];
      final arr0 = <VideoNewModel>[];
      v.forEach((v) {
        arr0.add(VideoNewModel.fromJson(v));
      });
      rows = arr0;
    }
    total = json['total']?.toString().convertInt;
  }

  Map<String, dynamic> toJson() {
    final data = <String, dynamic>{};
    if (rows != null) {
      final v = rows;
      final arr0 = [];
      for (var v in v!) {
        arr0.add(v!.toJson());
      }
      data['rows'] = arr0;
    }
    data['total'] = total;
    return data;
  }
}