social-app/apps/lib/shared/widgets/page_header.dart

import 'package:flutter/material.dart';

import '../../core/theme/design_tokens.dart';

class PageHeader extends StatelessWidget {
  final Widget? leading;
  final Widget? trailing;
  final double height;

  const PageHeader({super.key, this.leading, this.trailing, this.height = 64});

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: height,
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 20),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            leading ?? const SizedBox.shrink(),
            trailing ?? const SizedBox.shrink(),
          ],
        ),
      ),
    );
  }
}

class BackButton extends StatelessWidget {
  final VoidCallback? onPressed;

  const BackButton({super.key, this.onPressed});

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      width: AppSpacing.xxl * 2,
      height: AppSpacing.xxl * 2,
      child: TextButton(
        onPressed: onPressed ?? () => Navigator.of(context).pop(),
        style: TextButton.styleFrom(
          padding: const EdgeInsets.all(AppSpacing.none),
          backgroundColor: AppColors.surfaceTertiary,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(AppRadius.full),
            side: const BorderSide(color: AppColors.borderTertiary),
          ),
        ),
        child: const Icon(
          Icons.chevron_left,
          size: AppSpacing.lg + AppSpacing.xs,
          color: AppColors.slate700,
        ),
      ),
    );
  }
}