import 'package:flutter/material.dart';

import '../../api/oa_client.dart';
import '../../device/device_bridge.dart';
import '../../labels.dart';
import '../../nav/open_module.dart';
import '../../pages/module_list_page.dart' show RestShell, shellFor;
import '../../session/session.dart';
import '../desk_theme.dart';
import '../widgets/desk_data_table.dart';
import '../widgets/desk_widgets.dart';
import 'desk_attendance_page.dart';
import 'desk_hr_apply_page.dart';
import 'desk_legal_page.dart';
import 'desk_office_list_page.dart';
import 'desk_record_detail_page.dart';
import 'desk_work_assign_page.dart';

typedef DeskOpenTab = void Function(String key, String title, IconData icon, Color color, Widget page);

class DeskWorkbenchPage extends StatefulWidget {
  const DeskWorkbenchPage({super.key, required this.session, required this.api, required this.onOpenTab});

  final SessionStore session;
  final OaClient api;
  final DeskOpenTab onOpenTab;

  @override
  State<DeskWorkbenchPage> createState() => _DeskWorkbenchPageState();
}

class _DeskWorkbenchPageState extends State<DeskWorkbenchPage> {
  Map<String, dynamic> _ov = {};
  String _greet = '';
  bool _loading = true;
  String _q = '';
  String _cat = 'all';

  @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 (_) {}
      if (!mounted) return;
      setState(() {
        _ov = Map<String, dynamic>.from(ov as Map? ?? {});
        _greet = greet;
        _loading = false;
      });
    } catch (_) {
      if (mounted) setState(() => _loading = false);
    }
  }

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

  void _open(String key, String title, IconData icon, Color color, Widget page) {
    widget.onOpenTab(key, title, icon, color, page);
  }

  List<_App> _personalApps() {
    return [
      if (_match('待办'))
        _App('todos', '待办', '处理待办事项与提醒', Icons.task_alt, const Color(0xFFFA9D3B),
            DeskOfficeListPage(api: widget.api, title: '待办', path: '/office/todos', buckets: const [('OPEN', '待办'), ('DONE', '已办'), ('', '全部')], defaultBucket: 'OPEN')),
      if (_match('审批'))
        _App('approvals', '待审批', '审批各类办公申请', Icons.fact_check, kDeskBind,
            DeskOfficeListPage(api: widget.api, title: '待我审批', path: '/office/approvals', buckets: const [('PENDING', '待审批'), ('APPROVED', '已通过'), ('REJECTED', '已驳回'), ('', '全部')], defaultBucket: 'PENDING')),
      if (_match('申请'))
        _App('flow', '我的申请', '查看我发起的申请', Icons.assignment_outlined, const Color(0xFF6267F2),
            DeskOfficeListPage(api: widget.api, title: '我的申请', path: '/office/flow', buckets: const [('', '全部'), ('pending', '待审批'), ('approved', '已通过'), ('rejected', '已驳回')], defaultBucket: '')),
      if (_match('日程'))
        _App('calendar', '日程', '会议与日程安排', Icons.calendar_month, const Color(0xFF10AEFF),
            DeskOfficeListPage(
              api: widget.api,
              title: '我的日程',
              path: '/office/calendar',
              columns: const ['标题', '时间', '地点'],
              rowBuilder: (r) => ['${r['title'] ?? ''}', fmtTime(r['startAt'] ?? r['createdAt']), '${r['location'] ?? ''}'],
            )),
      if (_match('安排'))
        _App('work', '工作安排', '任务分配与跟进', Icons.event_note, const Color(0xFF00B578),
            DeskWorkAssignPage(session: widget.session, api: widget.api)),
      if (_match('打卡') || _match('考勤'))
        _App('attendance', '考勤打卡', '上下班打卡记录', Icons.access_time_filled, const Color(0xFF267EF0),
            DeskAttendancePage(api: widget.api)),
      if (_match('人事'))
        _App('hr', '人事申请', '请假、加班、外出等', Icons.beach_access, const Color(0xFF8B5CF6), DeskHrApplyPage(api: widget.api)),
    ];
  }

  List<_App> _menuApps() {
    final out = <_App>[];
    for (final m in widget.session.menus) {
      if (m.name == '工作台' || m.name == '个人办公') continue;
      if (m.name == '系统设置' || m.code.startsWith('system')) continue;
      if (m.children.isNotEmpty) {
        for (var i = 0; i < m.children.length; i++) {
          final c = m.children[i];
          if (_skip(c)) continue;
          if (!(_q.isEmpty || c.name.contains(_q) || m.name.contains(_q))) continue;
          out.add(_App(c.code, c.name, m.name, iconFor(c.code, c.name), colorFor(c.code, c.name, i), _pageFor(c)));
        }
      } else if (!_skip(m) && _match(m.name)) {
        out.add(_App(m.code, m.name, '业务应用', iconFor(m.code, m.name), colorFor(m.code, m.name), _pageFor(m)));
      }
    }
    return out;
  }

  bool _skip(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', '系统设置'};
    if (n.code.startsWith('office:') || 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);
  }

  String _legalKind(MenuNode n) {
    final p = '${n.path ?? ''} ${n.code}'.toLowerCase();
    if (p.contains('privacy') || p.contains('隐私')) return 'privacy';
    return 'user-agreement';
  }

  Widget _pageFor(MenuNode n) {
    if (n.code.contains('legal') || (n.path ?? '').startsWith('/legal')) {
      return DeskLegalPage(api: widget.api, kind: _legalKind(n));
    }
    if (n.code == 'office:assign' || n.name.contains('工作安排')) {
      return DeskWorkAssignPage(session: widget.session, api: widget.api);
    }
    final shell = shellFor(n.code, n.path) ?? _shellFromPath(n.path);
    if (shell != null) {
      return DeskModuleListPage(api: widget.api, title: n.name, shell: shell);
    }
    return Center(
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Text('${n.name} 暂未配置桌面入口', style: const TextStyle(color: kDeskMute)),
          if ((n.path ?? '').startsWith('http'))
            TextButton(
              onPressed: () => DeviceBridge.openUrl(n.path!),
              child: const Text('在浏览器打开'),
            ),
        ],
      ),
    );
  }

  RestShell? _shellFromPath(String? path) {
    final p = (path ?? '').trim();
    if (p.isEmpty || !p.startsWith('/') || p.contains(':')) return null;
    const blocked = [
      '/office/overview',
      '/office/todos',
      '/office/approvals',
      '/office/flow',
      '/office/calendar',
      '/office/weather',
      '/office/geo',
      '/auth',
      '/im',
      '/system',
      '/push',
      '/files',
      '/health',
    ];
    if (blocked.any((b) => p.startsWith(b))) return null;
    return RestShell(p);
  }

  List<_App> get _shown {
    final personal = _personalApps();
    final menu = _menuApps();
    if (_cat == 'personal') return personal;
    if (_cat == 'biz') return menu;
    return [...personal, ...menu];
  }

  @override
  Widget build(BuildContext context) {
    final width = MediaQuery.sizeOf(context).width;
    final cols = width >= 1100 ? 3 : 2;
    return ColoredBox(
      color: kDeskBg,
      child: Column(
        children: [
          DeskPaneHeader(
            title: '工作台',
            actions: [
              SizedBox(width: 200, child: DeskSearchField(hint: '搜索应用', onChanged: (v) => setState(() => _q = v.trim()))),
              const SizedBox(width: 8),
              TextButton(onPressed: _load, child: const Text('刷新')),
            ],
            bottom: Padding(
              padding: const EdgeInsets.fromLTRB(14, 0, 14, 10),
              child: DeskFilterChips(
                value: _cat,
                onChanged: (v) => setState(() => _cat = v),
                items: const [('all', '全部应用'), ('personal', '个人办公'), ('biz', '业务模块')],
              ),
            ),
          ),
          if (_loading) const LinearProgressIndicator(minHeight: 2, color: kDeskBind),
          Expanded(
            child: ListView(
              padding: const EdgeInsets.fromLTRB(16, 14, 16, 24),
              children: [
                Container(
                  padding: const EdgeInsets.fromLTRB(18, 16, 18, 16),
                  decoration: BoxDecoration(
                    gradient: const LinearGradient(colors: [Color(0xFFEEF4FF), Color(0xFFF8FBFF)]),
                    borderRadius: BorderRadius.circular(8),
                    border: Border.all(color: const Color(0xFFDCE8FF)),
                  ),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        _greet.isEmpty ? '你好，${widget.session.displayName}' : _greet,
                        style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w700),
                      ),
                      const SizedBox(height: 4),
                      const Text('个人办公与业务入口', style: TextStyle(color: kDeskMute, fontSize: 13)),
                    ],
                  ),
                ),
                const SizedBox(height: 14),
                Row(
                  children: [
                    _stat('待办', '${_ov['pendingTodos'] ?? 0}', () => _open('todos', '待办', Icons.task_alt, const Color(0xFFFA9D3B), DeskOfficeListPage(api: widget.api, title: '待办', path: '/office/todos', buckets: const [('OPEN', '待办'), ('DONE', '已办'), ('', '全部')], defaultBucket: 'OPEN'))),
                    const SizedBox(width: 10),
                    _stat('待审批', '${_ov['pendingApprovals'] ?? 0}', () => _open('approvals', '待审批', Icons.fact_check, kDeskBind, DeskOfficeListPage(api: widget.api, title: '待我审批', path: '/office/approvals', buckets: const [('PENDING', '待审批'), ('', '全部')], defaultBucket: 'PENDING'))),
                    const SizedBox(width: 10),
                    _stat('我的申请', '${_ov['myPending'] ?? 0}', () => _open('flow', '我的申请', Icons.assignment_outlined, const Color(0xFF6267F2), DeskOfficeListPage(api: widget.api, title: '我的申请', path: '/office/flow'))),
                    const SizedBox(width: 10),
                    _stat('逾期', '${_ov['overdueTodos'] ?? 0}', () => _open('todos', '待办', Icons.task_alt, const Color(0xFFFA9D3B), DeskOfficeListPage(api: widget.api, title: '待办', path: '/office/todos'))),
                  ],
                ),
                const SizedBox(height: 18),
                if (_shown.isEmpty)
                  const Padding(padding: EdgeInsets.only(top: 40), child: Center(child: Text('没有匹配的应用', style: TextStyle(color: kDeskMute))))
                else
                  GridView.builder(
                    shrinkWrap: true,
                    physics: const NeverScrollableScrollPhysics(),
                    gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
                      crossAxisCount: cols,
                      mainAxisSpacing: 10,
                      crossAxisSpacing: 10,
                      childAspectRatio: 2.9,
                    ),
                    itemCount: _shown.length,
                    itemBuilder: (_, i) {
                      final a = _shown[i];
                      return DeskAppCard(
                        title: a.title,
                        desc: a.desc,
                        icon: a.icon,
                        color: a.color,
                        onTap: () => _open(a.key, a.title, a.icon, a.color, a.page),
                      );
                    },
                  ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _stat(String label, String value, VoidCallback onTap) {
    return Expanded(
      child: Material(
        color: Colors.white,
        borderRadius: BorderRadius.circular(8),
        child: InkWell(
          onTap: onTap,
          borderRadius: BorderRadius.circular(8),
          child: Padding(
            padding: const EdgeInsets.symmetric(vertical: 14),
            child: Column(
              children: [
                Text(value, style: const TextStyle(fontSize: 22, fontWeight: FontWeight.w700, color: kDeskBind)),
                const SizedBox(height: 2),
                Text(label, style: const TextStyle(fontSize: 12, color: kDeskMute)),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

class _App {
  _App(this.key, this.title, this.desc, this.icon, this.color, this.page);
  final String key;
  final String title;
  final String desc;
  final IconData icon;
  final Color color;
  final Widget page;
}

/// 桌面端业务模块列表（表格），不沿用移动端 ModuleListPage。
class DeskModuleListPage extends StatefulWidget {
  const DeskModuleListPage({super.key, required this.api, required this.title, required this.shell});
  final OaClient api;
  final String title;
  final RestShell shell;

  @override
  State<DeskModuleListPage> createState() => _DeskModuleListPageState();
}

class _DeskModuleListPageState extends State<DeskModuleListPage> {
  List<Map<String, dynamic>> _items = [];
  bool _loading = true;
  String _q = '';

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

  Future<void> _load() async {
    setState(() => _loading = true);
    try {
      final data = await widget.api.get(widget.shell.path, query: {'page': '1', 'pageSize': '100', ...?widget.shell.query});
      if (!mounted) return;
      setState(() {
        _items = asMaps(data);
        _loading = false;
      });
    } catch (_) {
      if (mounted) setState(() => _loading = false);
    }
  }

  List<Map<String, dynamic>> get _shown {
    if (_q.isEmpty) return _items;
    return _items.where((e) => pickTitle(e).contains(_q) || pickSub(e).contains(_q)).toList();
  }

  @override
  Widget build(BuildContext context) {
    final shown = _shown;
    return DeskListScaffold(
      title: widget.title,
      loading: _loading,
      actions: [IconButton(onPressed: _load, icon: const Icon(Icons.refresh, size: 20))],
      filters: DeskSearchField(hint: '搜索', onChanged: (v) => setState(() => _q = v.trim())),
      body: DeskDataTable(
        columns: const ['名称', '摘要', '状态'],
        rows: [
          for (final r in shown)
            [pickTitle(r), zh(pickSub(r)), '${r['status'] ?? ''}'],
        ],
        emptyHint: '暂无${widget.title}',
        onRowTap: (i) {
          final r = shown[i];
          final seed = Map<String, dynamic>.from(r);
          if ('${r['id']}'.length >= 8) seed['_fetch'] = '${widget.shell.path}/${r['id']}';
          deskOpenRecord(context, widget.api, seed, title: pickTitle(r));
        },
      ),
    );
  }
}

String pickTitle(Map<String, dynamic> r) {
  for (final k in ['title', 'name', 'code', 'no']) {
    final v = r[k];
    if (v != null && '$v'.isNotEmpty) return '$v';
  }
  return '记录';
}

String pickSub(Map<String, dynamic> r) {
  for (final k in ['summary', 'remark', 'description', 'partyName', 'projectName']) {
    final v = r[k];
    if (v != null && '$v'.isNotEmpty) return '$v';
  }
  return '';
}