import 'package:flutter/material.dart';

import '../../../core/theme/app_colors.dart';
import '../../../core/widgets/app_icon.dart';
import '../../../core/widgets/pressable.dart';

/// One large, generic shortcut on the home screen.
class ShortcutTile extends StatelessWidget {
  const ShortcutTile({
    super.key,
    required this.title,
    required this.subtitle,
    required this.iconAsset,
    required this.size,
    required this.assigned,
    required this.onTap,
    this.onLongPress,
  });

  final String title;
  final String? subtitle;
  final String iconAsset;
  final double size;
  final bool assigned;
  final VoidCallback onTap;
  final VoidCallback? onLongPress;

  @override
  Widget build(BuildContext context) {
    final colors = context.colors;
    final theme = Theme.of(context);
    final placeholder = !assigned;
    final iconSize = (size * 0.27).clamp(30.0, 46.0);
    final semantics = StringBuffer(title);
    if (subtitle != null && subtitle!.isNotEmpty)
      semantics.write(', $subtitle');
    semantics.write('. Tap to open.');
    if (onLongPress != null) semantics.write(' Long press to change.');

    return Pressable(
      onTap: onTap,
      onLongPress: onLongPress,
      semanticLabel: semantics.toString(),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Container(
            width: size,
            height: size,
            decoration: BoxDecoration(
              color: colors.surface,
              borderRadius: BorderRadius.circular(size * 0.17),
              border: Border.all(
                color: placeholder
                    ? colors.accent.withValues(alpha: 0.16)
                    : colors.border,
              ),
              boxShadow: [
                BoxShadow(
                  color: colors.shadow.withValues(
                    alpha: Theme.of(context).brightness == Brightness.dark
                        ? 0.2
                        : 0.04,
                  ),
                  blurRadius: 26,
                  offset: const Offset(0, 10),
                ),
              ],
            ),
            child: Stack(
              children: [
                Center(
                  child: AppIcon(
                    iconAsset,
                    size: iconSize,
                    color: placeholder ? colors.inkMuted : colors.ink,
                  ),
                ),
                if (placeholder)
                  Positioned(
                    top: size * 0.09,
                    right: size * 0.09,
                    child: Container(
                      width: 26,
                      height: 26,
                      decoration: BoxDecoration(
                        color: colors.accent,
                        shape: BoxShape.circle,
                      ),
                      alignment: Alignment.center,
                      child: AppIcon(
                        'assets/icons/plus.svg',
                        size: 14,
                        color: colors.accentInk,
                      ),
                    ),
                  ),
              ],
            ),
          ),
          const SizedBox(height: 12),
          Text(
            title,
            maxLines: 1,
            overflow: TextOverflow.ellipsis,
            textAlign: TextAlign.center,
            style: theme.textTheme.titleMedium?.copyWith(
              fontSize: size >= 160 ? 16 : 14,
            ),
          ),
          if (subtitle != null) ...[
            const SizedBox(height: 2),
            SizedBox(
              height: 17,
              child: Text(
                subtitle!,
                maxLines: 1,
                overflow: TextOverflow.ellipsis,
                textAlign: TextAlign.center,
                style: theme.textTheme.bodySmall?.copyWith(
                  color: placeholder ? colors.accent : colors.inkMuted,
                  fontWeight: placeholder ? FontWeight.w600 : FontWeight.w400,
                  fontSize: size >= 160 ? 12 : 11,
                ),
              ),
            ),
          ],
        ],
      ),
    );
  }
}