// AUTO-GENERATED widget — matches web .btn
import 'package:flutter/material.dart';
import 'package:inou_app/design/inou_theme.dart';
import 'package:inou_app/design/inou_text.dart';

enum ButtonVariant { primary, secondary, danger }
enum ButtonSize { regular, small }

class InouButton extends StatelessWidget {
  final String text;
  final ButtonVariant variant;
  final ButtonSize size;
  final bool fullWidth;
  final VoidCallback? onPressed;
  final Widget? icon;

  const InouButton({
    super.key,
    required this.text,
    this.variant = ButtonVariant.primary,
    this.size = ButtonSize.regular,
    this.fullWidth = false,
    this.onPressed,
    this.icon,
  });

  @override
  Widget build(BuildContext context) {
    final isSmall = size == ButtonSize.small;
    final padding = isSmall
        ? const EdgeInsets.symmetric(horizontal: 12, vertical: 6)
        : const EdgeInsets.symmetric(horizontal: 18, vertical: 10);

    final style = _getStyle();

    Widget button = TextButton(
      onPressed: onPressed,
      style: TextButton.styleFrom(
        backgroundColor: style.background,
        foregroundColor: style.foreground,
        padding: padding,
        shape: RoundedRectangleBorder(
          borderRadius: InouTheme.borderRadiusMd,
          side: style.border,
        ),
        textStyle: InouText.label.copyWith(
          fontSize: 15,  // Always 15px (1rem) for both sizes per styleguide
        ),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          if (icon != null) ...[
            icon!,
            const SizedBox(width: 6),
          ],
          Text(text),
        ],
      ),
    );

    if (fullWidth) {
      button = SizedBox(width: double.infinity, child: button);
    }

    return button;
  }

  _ButtonStyle _getStyle() {
    switch (variant) {
      case ButtonVariant.primary:
        return _ButtonStyle(
          background: InouTheme.accent,
          foreground: Colors.white,
          border: BorderSide.none,
        );
      case ButtonVariant.secondary:
        return _ButtonStyle(
          background: InouTheme.bgCard,
          foreground: InouTheme.text,
          border: const BorderSide(color: InouTheme.border),
        );
      case ButtonVariant.danger:
        return _ButtonStyle(
          background: InouTheme.dangerLight,
          foreground: InouTheme.danger,
          border: BorderSide(color: InouTheme.danger.withOpacity(0.3)),
        );
    }
  }
}

class _ButtonStyle {
  final Color background;
  final Color foreground;
  final BorderSide border;

  _ButtonStyle({
    required this.background,
    required this.foreground,
    required this.border,
  });
}

/// Icon button (matches .btn-icon)
class InouIconButton extends StatelessWidget {
  final IconData icon;
  final VoidCallback? onPressed;
  final Color? color;

  const InouIconButton({
    super.key,
    required this.icon,
    this.onPressed,
    this.color,
  });

  @override
  Widget build(BuildContext context) {
    return IconButton(
      icon: Icon(icon),
      onPressed: onPressed,
      color: color ?? InouTheme.textSubtle,
      iconSize: 20,
      padding: const EdgeInsets.all(8),
      constraints: const BoxConstraints(),
    );
  }
}