import 'package:flutter/material.dart';

import '../api/oa_client.dart';
import '../session/session.dart';
import '../widgets/common.dart';
import 'record_detail_page.dart';

class WorkAssignPage extends StatefulWidget {
  const WorkAssignPage({super.key, required this.session, required this.api});
  final SessionStore session;
  final OaClient api;

  @override
  State<WorkAssignPage> createState() => _WorkAssignPageState();
}

class _WorkAssignPageState extends State<WorkAssignPage> {
  List<Map<String, dynamic>> _items = [];
  bool _loading = true;

  bool get _canAssign {
    const codes = ['admin', 'owner', 'biz_director', 'tech_director', 'rd_director', '3d_director', 'video_director', 'material_director', 'pm'];
    return widget.session.roles.any(codes.contains);
  }

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

  Future<void> _load() async {
    try {
      final data = await widget.api.get('/office/work-assignments');
      if (!mounted) return;
      setState(() {
        _items = asMaps(data);
        _loading = false;
      });
    } catch (_) {
      if (mounted) setState(() => _loading = false);
    }
  }

  Future<void> _create() async {
    final staff = asMaps(await widget.api.get('/staff'));
    if (!mounted) return;
    final title = TextEditingController();
    final content = TextEditingController();
    String? assignee;
    final ok = await showDialog<bool>(
      context: context,
      builder: (ctx) => StatefulBuilder(
        builder: (ctx, setSt) => AlertDialog(
          title: const Text('安排工作'),
          content: SizedBox(
            width: 420,
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                TextField(controller: title, decoration: const InputDecoration(labelText: '标题')),
                const SizedBox(height: 8),
                TextField(controller: content, decoration: const InputDecoration(labelText: '内容'), maxLines: 3),
                const SizedBox(height: 8),
                DropdownButtonFormField<String>(
                  decoration: const InputDecoration(labelText: '执行人'),
                  items: [
                    for (final s in staff)
                      DropdownMenuItem(value: '${s['id']}', child: Text('${s['name'] ?? ''} ${s['department'] ?? ''}')),
                  ],
                  onChanged: (v) => setSt(() => assignee = v),
                ),
              ],
            ),
          ),
          actions: [
            TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('取消')),
            FilledButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('下达')),
          ],
        ),
      ),
    );
    if (ok != true) return;
    try {
      await widget.api.post('/office/work-assignments', {
        'title': title.text.trim(),
        'content': content.text.trim(),
        'assigneeId': assignee,
      });
      await _load();
    } catch (e) {
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('$e')));
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('工作安排'),
        actions: [
          if (_canAssign) IconButton(onPressed: _create, icon: const Icon(Icons.add)),
        ],
      ),
      body: _loading
          ? const Center(child: CircularProgressIndicator())
          : _items.isEmpty
              ? const EmptyHint('没有工作安排')
              : RefreshIndicator(
                  onRefresh: _load,
                  child: ListView(
                    children: [
                      for (final r in _items)
                        KvTile(
                          title: '${r['title'] ?? ''}',
                          subtitle: '${r['assignee'] is Map ? r['assignee']['displayName'] : ''}  ${fmtTime(r['dueAt'] ?? r['createdAt'])}',
                          status: r['status'],
                          onTap: () => openRecord(context, widget.api, r),
                        ),
                    ],
                  ),
                ),
    );
  }
}