import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:intl/intl.dart';
import '../core/auth/auth_state.dart';
import '../core/config/license_copy.dart';
import '../core/theme/app_chrome.g.dart';
import '../providers/connectivity_provider.dart';
import '../providers/license_provider.dart';
import '../providers/update_provider.dart';

/// 底部状态栏（原型 .statusbar，主题无关 chrome 条）。
/// 左：门店编号 / 操作员 / 登录时间 / 当前时间（每秒走字）  右：连接 / 版本 / 授权。
class AppStatusBar extends ConsumerStatefulWidget {
  final String loginTime;
  const AppStatusBar({super.key, required this.loginTime});

  /// 时钟种子（可测试缝）：golden 测试覆盖为固定时间以确定化；走字默认关。
  static DateTime Function() clock = DateTime.now;

  /// 是否每秒走字（golden 测试关掉，避免时间变动造成像素抖动 / pending timer）。
  static bool ticking = true;

  @override
  ConsumerState<AppStatusBar> createState() => _AppStatusBarState();
}

class _AppStatusBarState extends ConsumerState<AppStatusBar> {
  Timer? _timer;
  late String _now;

  @override
  void initState() {
    super.initState();
    _now = DateFormat('HH:mm:ss').format(AppStatusBar.clock());
    if (AppStatusBar.ticking) {
      _timer = Timer.periodic(const Duration(seconds: 1), (_) {
        if (mounted) {
          setState(() =>
              _now = DateFormat('HH:mm:ss').format(AppStatusBar.clock()));
        }
      });
    }
  }

  @override
  void dispose() {
    _timer?.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    final user = ref.watch(authStateProvider).user;
    final isOnline = ref.watch(connectivityProvider);
    final version = ref.watch(appVersionProvider).valueOrNull ?? 'v1.0.0';
    final lic = ref.watch(licenseProvider).valueOrNull;

    return Container(
      height: 34,
      color: AppChrome.statusbarBg,
      padding: const EdgeInsets.symmetric(horizontal: 6),
      child: Row(
        children: [
          // 左组
          _item(icon: Icons.storefront_outlined, strong: user?.shopNo ?? '—'),
          _div(),
          _item(
              icon: Icons.person_outline,
              text: (user == null || user.realName.isEmpty)
                  ? (user?.username ?? '—')
                  : user.realName),
          _div(),
          _item(icon: Icons.login, text: '登录 ', strong: widget.loginTime),
          _div(),
          _item(icon: Icons.schedule, text: '当前 ', strong: _now),
          const Spacer(),
          // 右组
          _item(
            icon: isOnline ? Icons.cloud_done_outlined : Icons.cloud_off_outlined,
            text: isOnline ? '已连接' : '连接已断开',
            ok: isOnline,
          ),
          _div(),
          _item(icon: Icons.sell_outlined, strong: version, ok: true),
          _div(),
          _licenseItem(lic),
        ],
      ),
    );
  }

  Widget _div() => Container(
        width: 1,
        height: 14,
        color: AppChrome.statusbarDiv,
        margin: const EdgeInsets.symmetric(horizontal: 0),
      );

  // 单项：图标 + 普通文字 + 强调文字（mono 强调色）。ok=true 用 statusbar-ok 绿。
  Widget _item({
    required IconData icon,
    String? text,
    String? strong,
    bool ok = false,
    Color? color,
  }) {
    final c = color ?? (ok ? AppChrome.statusbarOk : AppChrome.statusbarFg);
    final iconC = ok ? AppChrome.statusbarOk : AppChrome.statusbarMuted;
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 13),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(icon, size: 13, color: iconC),
          const SizedBox(width: 6),
          if (text != null)
            Text(text, style: TextStyle(fontSize: 11, color: c)),
          if (strong != null)
            Text(
              strong,
              style: TextStyle(
                fontSize: 11,
                color: ok ? AppChrome.statusbarOk : AppChrome.statusbarStrong,
                fontWeight: FontWeight.w600,
              ),
            ),
        ],
      ),
    );
  }

  Widget _licenseItem(LicenseInfo? lic) {
    if (lic == null) {
      return _item(icon: Icons.verified_user_outlined, text: '授权', ok: true);
    }
    final color = LicenseCopy.phaseColor(lic.phase);
    final icon = LicenseCopy.phaseIcon(lic.phase);
    final date = lic.expiresAt == null
        ? ''
        : DateFormat('yyyy-MM-dd').format(lic.expiresAt!);
    final text = LicenseCopy.statusBar(lic, date);
    final normal = lic.phase == 'normal';
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 13),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(icon,
              size: 13, color: normal ? AppChrome.statusbarOk : color),
          const SizedBox(width: 6),
          Text(
            text,
            style: TextStyle(
              fontSize: 11,
              color: normal ? AppChrome.statusbarOk : color,
              fontWeight: FontWeight.w600,
            ),
          ),
        ],
      ),
    );
  }
}