import 'package:flutter/material.dart';

import '../api/oa_client.dart';
import '../nav/open_module.dart';
import '../ota/updater.dart';
import '../pages/approvals_page.dart';
import '../pages/attendance_page.dart';
import '../pages/calendar_page.dart';
import '../pages/flow_page.dart';
import '../pages/hr_apply_page.dart';
import '../pages/todos_page.dart';
import '../pages/work_assign_page.dart';
import '../session/session.dart';
import '../theme.dart';
import '../widgets/wecom.dart';

class WorkbenchPage extends StatefulWidget {
  const WorkbenchPage({super.key, required this.session, required this.api, this.embedded = true});
  final SessionStore session;
  final OaClient api;
  final bool embedded;

  @override
  State<WorkbenchPage> createState() => _WorkbenchPageState();
}

class _WorkbenchPageState extends State<WorkbenchPage> {
  Map<String, dynamic> _ov = {};
  String _greet = '';
  AppRelease? _rel;
  bool _loading = true;
  String _q = '';

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

  Future<void> _load() async {
    try {
      final ov = await widget.api.get('/office/overview');
      String greet = '';
      try {
        final w = await widget.api.get('/office/weather');
        if (w is Map) greet = '${w['greeting'] ?? w['text'] ?? ''}';
      } catch (_) {}
      AppRelease? rel;
      try {
        rel = await OtaUpdater(widget.api).fetch();
      } catch (_) {}
      if (!mounted) return;
      setState(() {
        _ov = Map<String, dynamic>.from(ov as Map? ?? {});
        _greet = greet;
        _rel = rel;
        _loading = false;
      });
    } catch (_) {
      if (mounted) setState(() => _loading = false);
    }
  }

  bool _match(String name) => _q.isEmpty || name.contains(_q);

  bool _skipGroup(MenuNode m) {
    if (m.name == '工作台' || m.name == '个人办公' || m.code == 'office:overview') return true;
    if (m.name == '系统设置' || m.code.startsWith('system')) return true;
    return false;
  }

  bool _skipChild(MenuNode n) {
    const names = {
      '待办',
      '待审批',
      '我的申请',
      '日程',
      '公告',
      '公司公告',
      '工作安排',
      '人事申请',
      '工作台',
      '个人办公',
      '消息',
      '通讯录',
      '员工通讯',
      '发送短信',
      '人事设置',
      '数据字典',
      '权限设置',
      '编号规则',
      '短信服务',
      '消息通道',
      '手机端升级',
      '操作日志',
      '系统设置',
    };
    if (n.code.startsWith('office:')) return true;
    if (n.code.startsWith('system')) return true;
    if (n.code.contains('sms') || n.name.contains('短信')) return true;
    if (n.name.contains('公告') || n.name == '员工通讯') return true;
    return names.contains(n.name);
  }

  @override
  Widget build(BuildContext context) {
    final body = RefreshIndicator(
      onRefresh: _load,
      child: ListView(
        padding: const EdgeInsets.only(bottom: 24),
        children: [
          if (_loading) const LinearProgressIndicator(minHeight: 2, color: kBind),
          if (_rel != null && _rel!.newer)
            Padding(
              padding: const EdgeInsets.fromLTRB(12, 12, 12, 0),
              child: Material(
                color: const Color(0xFFE8F3FF),
                borderRadius: BorderRadius.circular(8),
                child: InkWell(
                  onTap: () => OtaUpdater(widget.api).prompt(context, _rel!, manual: true),
                  borderRadius: BorderRadius.circular(8),
                  child: Padding(
                    padding: const EdgeInsets.fromLTRB(14, 12, 14, 12),
                    child: Row(
                      children: [
                        const Icon(Icons.system_update_alt, color: kBind),
                        const SizedBox(width: 10),
                        Expanded(
                          child: Column(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Text('发现新版本 ${_rel!.version}', style: const TextStyle(fontWeight: FontWeight.w600, color: kInk)),
                              Text(_rel!.changelog.isEmpty ? '点击升级到最新手机版' : _rel!.changelog, maxLines: 1, overflow: TextOverflow.ellipsis, style: const TextStyle(fontSize: 12, color: kMute)),
                            ],
                          ),
                        ),
                        const Text('升级', style: TextStyle(color: kBind, fontWeight: FontWeight.w600)),
                      ],
                    ),
                  ),
                ),
              ),
            ),
          Padding(
            padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(_greet.isEmpty ? '你好，${widget.session.displayName}' : _greet, style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w700, color: kInk)),
                const SizedBox(height: 4),
                const Text('工作台', style: TextStyle(color: kMute, fontSize: 13)),
              ],
            ),
          ),
          GroupCard(
            title: '待处理',
            child: Padding(
              padding: const EdgeInsets.fromLTRB(8, 4, 8, 14),
              child: Row(
                children: [
                  _stat('待办', '${_ov['pendingTodos'] ?? 0}', () => pushPage(context, TodosPage(api: widget.api))),
                  _stat('待审批', '${_ov['pendingApprovals'] ?? 0}', () => pushPage(context, ApprovalsPage(api: widget.api))),
                  _stat('我的申请', '${_ov['myPending'] ?? 0}', () => pushPage(context, FlowPage(api: widget.api))),
                  _stat('逾期', '${_ov['overdueTodos'] ?? 0}', () => pushPage(context, TodosPage(api: widget.api))),
                ],
              ),
            ),
          ),
          if (_match('待办') || _match('审批') || _match('申请') || _match('日程') || _match('人事'))
            GroupCard(
              title: '个人办公',
              child: AppGrid(
                items: [
                  if (_match('待办'))
                    AppGridItem(label: '待办', icon: Icons.task_alt, color: const Color(0xFFFA9D3B), onTap: () => pushPage(context, TodosPage(api: widget.api))),
                  if (_match('审批'))
                    AppGridItem(label: '待审批', icon: Icons.fact_check, color: kBind, onTap: () => pushPage(context, ApprovalsPage(api: widget.api))),
                  if (_match('申请'))
                    AppGridItem(label: '我的申请', icon: Icons.assignment_outlined, color: const Color(0xFF6267F2), onTap: () => pushPage(context, FlowPage(api: widget.api))),
                  if (_match('日程'))
                    AppGridItem(label: '日程', icon: Icons.calendar_month, color: const Color(0xFF10AEFF), onTap: () => pushPage(context, CalendarPage(api: widget.api))),
                  if (_match('安排'))
                    AppGridItem(label: '工作安排', icon: Icons.event_note, color: const Color(0xFF00B578), onTap: () => pushPage(context, WorkAssignPage(session: widget.session, api: widget.api))),
                  if (_match('打卡') || _match('考勤'))
                    AppGridItem(label: '考勤打卡', icon: Icons.access_time_filled, color: const Color(0xFF267EF0), onTap: () => pushPage(context, AttendancePage(api: widget.api))),
                  if (_match('人事') || _match('请假') || _match('加班'))
                    AppGridItem(label: '人事申请', icon: Icons.beach_access, color: const Color(0xFF8B5CF6), onTap: () => pushPage(context, HrApplyPage(api: widget.api))),
                ],
              ),
            ),
          ..._menuGroups(),
        ],
      ),
    );
    if (!widget.embedded) {
      return Scaffold(appBar: AppBar(title: const Text('工作台')), body: body);
    }
    return ColoredBox(
      color: kPaper,
      child: Column(
        children: [
          WxHeader(
            title: '工作台',
            actions: [
              IconButton(
                onPressed: () async {
                  final c = TextEditingController(text: _q);
                  final v = await showDialog<String>(
                    context: context,
                    builder: (ctx) => AlertDialog(
                      title: const Text('搜索应用'),
                      content: TextField(controller: c, autofocus: true, decoration: const InputDecoration(hintText: '待办、投标、报销…')),
                      actions: [
                        TextButton(onPressed: () => Navigator.pop(ctx, ''), child: const Text('清除')),
                        FilledButton(onPressed: () => Navigator.pop(ctx, c.text.trim()), child: const Text('搜索')),
                      ],
                    ),
                  );
                  if (v != null) setState(() => _q = v);
                },
                icon: const Icon(Icons.search, color: kInk),
              ),
            ],
          ),
          Expanded(child: body),
        ],
      ),
    );
  }

  List<Widget> _menuGroups() {
    final out = <Widget>[];
    for (final m in widget.session.menus) {
      if (_skipGroup(m)) continue;
      if (m.children.isNotEmpty) {
        final items = <AppGridItem>[];
        for (var i = 0; i < m.children.length; i++) {
          final c = m.children[i];
          if (_skipChild(c)) continue;
          if (!(_q.isEmpty || c.name.contains(_q) || m.name.contains(_q))) continue;
          items.add(AppGridItem(
            label: c.name,
            icon: iconFor(c.code, c.name),
            color: colorFor(c.code, c.name, i),
            onTap: () => openMenuNode(context, widget.session, widget.api, c),
          ));
        }
        if (items.isEmpty) continue;
        out.add(GroupCard(title: m.name, child: AppGrid(items: items)));
      } else if (!_skipChild(m) && _match(m.name)) {
        out.add(GroupCard(
          title: m.name,
          child: AppGrid(items: [
            AppGridItem(
              label: m.name,
              icon: iconFor(m.code, m.name),
              color: colorFor(m.code, m.name),
              onTap: () => openMenuNode(context, widget.session, widget.api, m),
            ),
          ]),
        ));
      }
    }
    return out;
  }

  Widget _stat(String label, String value, VoidCallback onTap) {
    return Expanded(
      child: InkWell(
        onTap: onTap,
        child: Column(
          children: [
            Text(value, style: const TextStyle(fontSize: 22, fontWeight: FontWeight.w700, color: kBind)),
            const SizedBox(height: 2),
            Text(label, style: const TextStyle(fontSize: 12, color: kMute)),
          ],
        ),
      ),
    );
  }
}