// Author: fruit.com.cn

import 'package:flutter/material.dart';

import '../../core/data/models/watch_progress.dart';
import '../../core/data/repositories/watch_history_repository.dart';
import 'mine_types.dart';

/// 「我的」页状态：最近观看与根导航动作。
class MineLogic extends ChangeNotifier {
  MineLogic({required this.history}) {
    refreshRecent();
  }

  final WatchHistoryRepository history;
  List<WatchProgress> recent = const [];
  int? watchRecordTotal;
  bool recentLoading = false;
  String? recentError;
  bool _disposed = false;
  int _requestSeq = 0;

  void notify() {
    if (!_disposed) notifyListeners();
  }

  /// 最近观看：取分页首屏，剧名封面仍由目录卡片按 id 映射。
  Future<void> refreshRecent() async {
    final request = ++_requestSeq;
    recentLoading = true;
    recentError = null;
    notify();
    try {
      final page = await history.recent(pageIndex: 1, pageSize: 10);
      if (_disposed || request != _requestSeq) return;
      recent = page.list;
      watchRecordTotal = page.total;
    } catch (_) {
      if (!_disposed && request == _requestSeq) {
        recentError = 'progressError';
      }
    } finally {
      if (!_disposed && request == _requestSeq) {
        recentLoading = false;
        notify();
      }
    }
  }

  /// 切换账号/设备身份时先清空，避免旧身份数据回写或短暂混显。
  void resetRecent() {
    _requestSeq += 1;
    recent = const [];
    watchRecordTotal = null;
    recentLoading = false;
    recentError = null;
    notify();
  }

  /// 页面重新可见时刷新最近观看，避免停留在旧进度。
  void syncPage({required bool active, required bool wasActive}) {
    if (active && !wasActive) refreshRecent();
  }

  void act(
    BuildContext context,
    MyPageAction action, {
    required bool embedded,
    ValueChanged<MyPageAction>? onAction,
  }) {
    if (embedded) {
      onAction?.call(action);
    } else {
      Navigator.pop(context, action);
    }
  }

  @override
  void dispose() {
    _disposed = true;
    super.dispose();
  }
}