import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
import '../services/auth_service.dart';

class GiteaCard extends StatefulWidget {
  const GiteaCard({super.key});

  @override
  State<GiteaCard> createState() => _GiteaCardState();
}

class _GiteaCardState extends State<GiteaCard> {
  List<dynamic> _activities = [];
  bool _isLoading = false;
  String? _error;

  String _getOperationTypeText(String opType) {
    switch (opType) {
      case 'create_repo':
        return '创建仓库';
      case 'commit_repo':
        return '提交代码';
      case 'push_tag':
        return '推送标签';
      case 'create_issue':
        return '创建 Issue';
      case 'comment_issue':
        return '评论 Issue';
      case 'create_pull_request':
        return '创建 Pull Request';
      case 'merge_pull_request':
        return '合并 Pull Request';
      default:
        return opType;
    }
  }

  Widget _buildCommitContent(String content) {
    try {
      final data = jsonDecode(content);
      final commits = data['Commits'] as List;

      return Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children:
            commits.map((commit) {
              return Padding(
                padding: const EdgeInsets.symmetric(vertical: 4.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      commit['Message'],
                      style: const TextStyle(fontWeight: FontWeight.bold),
                    ),
                    Text(
                      '作者: ${commit['AuthorName']} <${commit['AuthorEmail']}>',
                      style: const TextStyle(fontSize: 12, color: Colors.grey),
                    ),
                    Text(
                      '提交时间: ${commit['Timestamp']}',
                      style: const TextStyle(fontSize: 12, color: Colors.grey),
                    ),
                  ],
                ),
              );
            }).toList(),
      );
    } catch (e) {
      return Text(content);
    }
  }

  Future<void> _fetchActivities() async {
    setState(() {
      _isLoading = true;
      _error = null;
    });

    try {
      final authService = Provider.of<AuthService>(context, listen: false);
      final token = authService.credentials['gitea'];
      final username = authService.credentials['gitea_username'];

      if (token == null || token.isEmpty) {
        throw Exception('未配置 Gitea Token');
      }
      if (username == null || username.isEmpty) {
        throw Exception('未配置 Gitea 用户名');
      }

      final response = await http.get(
        Uri.parse(
          'https://git.jdysya.top/api/v1/users/$username/activities/feeds',
        ),
        headers: {'Authorization': 'token $token'},
      );

      if (response.statusCode == 200) {
        setState(() {
          _activities = jsonDecode(response.body);
          _isLoading = false;
        });
      } else {
        throw Exception('请求失败: ${response.statusCode}');
      }
    } catch (e) {
      setState(() {
        _error = e.toString();
        _isLoading = false;
      });
    }
  }

  @override
  void initState() {
    super.initState();
    _fetchActivities();
  }

  @override
  Widget build(BuildContext context) {
    return Card(
      child: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                const Text(
                  'Gitea 最近活动',
                  style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
                ),
                IconButton(
                  icon: const Icon(Icons.refresh),
                  onPressed: _isLoading ? null : _fetchActivities,
                ),
              ],
            ),
            if (_isLoading)
              const Center(
                child: Padding(
                  padding: EdgeInsets.all(16.0),
                  child: CircularProgressIndicator(),
                ),
              )
            else if (_error != null)
              Center(
                child: Padding(
                  padding: const EdgeInsets.all(16.0),
                  child: Text(
                    _error!,
                    style: const TextStyle(color: Colors.red),
                  ),
                ),
              )
            else if (_activities.isEmpty)
              const Center(
                child: Padding(
                  padding: EdgeInsets.all(16.0),
                  child: Text('暂无活动记录'),
                ),
              )
            else
              Expanded(
                child: ListView.builder(
                  itemCount: _activities.length,
                  itemBuilder: (context, index) {
                    final activity = _activities[index];
                    final repo = activity['repo'];
                    final created = DateTime.parse(activity['created']);

                    return Card(
                      margin: const EdgeInsets.symmetric(vertical: 4.0),
                      child: Padding(
                        padding: const EdgeInsets.all(12.0),
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Row(
                              children: [
                                CircleAvatar(
                                  radius: 16,
                                  child: Text(
                                    activity['act_user']['login'][0]
                                        .toUpperCase(),
                                  ),
                                ),
                                const SizedBox(width: 8),
                                Text(
                                  activity['act_user']['login'],
                                  style: const TextStyle(
                                    fontWeight: FontWeight.bold,
                                  ),
                                ),
                                const SizedBox(width: 8),
                                Text(
                                  _getOperationTypeText(activity['op_type']),
                                ),
                              ],
                            ),
                            const SizedBox(height: 8),
                            if (repo != null)
                              Text(
                                repo['full_name'],
                                style: const TextStyle(
                                  color: Colors.blue,
                                  fontWeight: FontWeight.bold,
                                ),
                              ),
                            if (activity['content'] != null)
                              Padding(
                                padding: const EdgeInsets.only(top: 8.0),
                                child:
                                    activity['op_type'] == 'commit_repo'
                                        ? _buildCommitContent(
                                          activity['content'],
                                        )
                                        : Text(activity['content']),
                              ),
                            const SizedBox(height: 8),
                            Text(
                              '时间: ${created.toString().substring(0, 19)}',
                              style: const TextStyle(
                                fontSize: 12,
                                color: Colors.grey,
                              ),
                            ),
                          ],
                        ),
                      ),
                    );
                  },
                ),
              ),
          ],
        ),
      ),
    );
  }
}