food_hub_app/lib/widgets/common/index.dart

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:toggle_switch/toggle_switch.dart';

Widget formLabelText({required String labelText, bool isRequired = false}) {
  return Text.rich(
    TextSpan(
      children: [
        if (isRequired)
          const TextSpan(text: '* ', style: TextStyle(color: Colors.red)),
        TextSpan(text: labelText),
      ],
    ),
  );
}

InputDecoration formInputDecoration({
  required String hintText,
  IconData? prefixIcon,
}) {
  return InputDecoration(
    hintText: hintText,
    hintStyle: TextStyle(color: Colors.grey),
    filled: true,
    fillColor: Colors.white,
    border: OutlineInputBorder(),
    prefixIcon: prefixIcon != null ? Icon(prefixIcon) : null,
  );
}

class BuildCard extends StatelessWidget {
  final Widget? child;

  const BuildCard({super.key, this.child});

  @override
  Widget build(BuildContext context) {
    final colors = Theme.of(context).colorScheme;

    return Container(
      decoration: BoxDecoration(
        color: colors.surfaceContainer,
        borderRadius: BorderRadius.circular(12),
        // border: Border.all(color: colors.outline.withAlpha(50), width: 1),
      ),
      padding: const EdgeInsets.all(10),
      child: child,
    );
  }
}

Widget buildEmptyData() {
  return Center(
    child: Text('暂无数据', style: TextStyle(fontSize: 16, color: Colors.grey)),
  );
}

Widget buildToggleSwitch<T extends Enum>({
  required BuildContext context,
  required T currentTab,
  required List<T> tabValues,
  required List<String> labels,
  required ValueChanged<T> onTabChanged,
}) {
  final colors = Theme.of(context).colorScheme;

  return ToggleSwitch(
    minWidth: 90.0,
    minHeight: 40.0,
    initialLabelIndex: tabValues.indexOf(currentTab),
    totalSwitches: tabValues.length,
    labels: labels,
    activeBgColor: [colors.primary],
    activeFgColor: Colors.white,
    inactiveBgColor: colors.surfaceContainer,
    inactiveFgColor: colors.onSurface,
    cornerRadius: 12.0,
    customTextStyles: [TextStyle(fontSize: 12, fontWeight: FontWeight.w500)],
    onToggle: (index) {
      if (index != null && index < tabValues.length) {
        onTabChanged(tabValues[index]);
      }
    },
  );
}

/// 圆形图标按钮
Widget circleIconButton({
  required IconData icon,
  required VoidCallback onPressed,
  required BuildContext context,
  bool? isSmall,
}) {
  final double size = isSmall == true ? 24 : 36;

  return ElevatedButton(
    onPressed: onPressed,
    style: ElevatedButton.styleFrom(
      fixedSize: Size(size, size),
      shape: CircleBorder(),
      elevation: 0,
      backgroundColor: Theme.of(context).colorScheme.primary,
      padding: EdgeInsets.zero,
      minimumSize: const Size(0, 0),
    ),
    child: Icon(icon, color: Colors.white),
  );
}

Widget buildTag(BuildContext context, String title) {
  final colors = Theme.of(context).colorScheme;

  return Container(
    padding: EdgeInsets.symmetric(horizontal: 10, vertical: 4),
    decoration: BoxDecoration(
      color: colors.primary.withAlpha(60),
      borderRadius: BorderRadius.circular(10),
    ),
    child: Text(title, style: TextStyle(color: colors.primary)),
  );
}

/// 确认按钮样式
ButtonStyle primaryButtonStyle() {
  return ButtonStyle(
    backgroundColor: WidgetStateProperty.all(Colors.green),
    shape: WidgetStateProperty.all(
      RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
    ),
  );
}

/// 取消按钮样式
ButtonStyle cancelButtonStyle() {
  return ButtonStyle(
    backgroundColor: WidgetStateProperty.all(Colors.grey),
    shape: WidgetStateProperty.all(
      RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
    ),
  );
}

Text buttonText({required String text}) {
  return Text(text, style: TextStyle(color: Colors.white));
}

/// 图片错误显示
Widget errorImageContainer(double height) {
  return Container(
    height: 200,
    width: double.infinity,
    color: Colors.grey[200],
    child: const Icon(Icons.image, color: Colors.grey, size: 30),
  );
}

/// 成功消息
void showSuccessToast(String message) {
  Fluttertoast.showToast(
    msg: message,
    toastLength: Toast.LENGTH_SHORT,
    gravity: ToastGravity.TOP,
    timeInSecForIosWeb: 1,
    backgroundColor: Colors.green,
    textColor: Colors.white,
    fontSize: 16.0,
  );
}

/// 错误消息
void showErrorToast(String message) {
  Fluttertoast.showToast(
    msg: message,
    toastLength: Toast.LENGTH_SHORT,
    gravity: ToastGravity.TOP,
    timeInSecForIosWeb: 1,
    backgroundColor: Colors.red,
    textColor: Colors.white,
    fontSize: 16.0,
  );
}

Widget buildLoadingIndicator(BuildContext context) {
  final colors = Theme.of(context).colorScheme;

  return Center(
    child: Container(
      padding: EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
        boxShadow: [
          BoxShadow(color: Colors.black12, blurRadius: 8, offset: Offset(0, 2)),
        ],
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          CircularProgressIndicator(
            valueColor: AlwaysStoppedAnimation<Color>(colors.primary),
          ),
          SizedBox(height: 12),
          Text(
            '加载中',
            style: TextStyle(
              fontSize: 14,
              color: colors.onSurface,
              fontWeight: FontWeight.w500,
            ),
          ),
        ],
      ),
    ),
  );
}