water-management-system/lib/widgets/custom_button.dart

import 'package:flutter/material.dart';
import 'package:water_management_system/utils/constants.dart';

class CustomButton extends StatelessWidget {
  final String text;
  final VoidCallback onPressed;
  final Color? backgroundColor;
  final Color? textColor;
  final double? width;
  final double? height;
  final bool? isLoading;
  final IconData? icon;
  final double? fontSize;
  final FontWeight? fontWeight;

  const CustomButton({
    super.key,
    required this.text,
    required this.onPressed,
    this.backgroundColor,
    this.textColor,
    this.width,
    this.height,
    this.isLoading = false,
    this.icon,
    this.fontSize,
    this.fontWeight,
  });

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      width: width ?? double.infinity,
      height: height ?? 48,
      child: ElevatedButton(
        onPressed: isLoading! ? null : onPressed,
        style: ElevatedButton.styleFrom(
          backgroundColor: backgroundColor ?? AppConstants.primaryColor,
          foregroundColor: textColor ?? Colors.white,
          elevation: 2,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(8),
          ),
        ),
        child: isLoading!
            ? const SizedBox(
                width: 20,
                height: 20,
                child: CircularProgressIndicator(
                  strokeWidth: 2,
                  valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
                ),
              )
            : Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  if (icon != null) ...[
                    Icon(
                      icon,
                      size: fontSize ?? 16,
                    ),
                    const SizedBox(width: 8),
                  ],
                  Text(
                    text,
                    style: TextStyle(
                      fontSize: fontSize ?? 16,
                      fontWeight: fontWeight ?? FontWeight.w500,
                    ),
                  ),
                ],
              ),
      ),
    );
  }
}