import "package:shadcn_flutter/shadcn_flutter.dart";

class AgcGhostButton extends StatefulWidget {

  final Widget child;
  final VoidCallback? onPressed;
  final BorderRadius? borderRadius;

  AgcGhostButton({
    required this.child,
    this.onPressed,
    this.borderRadius,
  });

  @override
  State<AgcGhostButton> createState() => _GhostButtonState();
}

class _GhostButtonState extends State<AgcGhostButton> {

  bool _hovering = false;
  bool _pressing = false;

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

    final radius = widget.borderRadius ?? BorderRadius.circular(
      Theme.of(context).radiusSm - 4
    );

    Color bg = Colors.transparent;
    if (_pressing) {
      bg = colorScheme.accent.withOpacity(0.8);
    } else if (_hovering) {
      bg = colorScheme.accent.withOpacity(0.5);
    }

    final active = widget.onPressed != null;

    return MouseRegion(
      cursor: active ? SystemMouseCursors.click : MouseCursor.defer,
      onEnter: (_) { if (active) setState(() => _hovering = true); },
      onExit: (_) => setState(() {
        _hovering = false;
        _pressing = false;
      }),

      child: GestureDetector(
        onTapDown: active ? (_) => setState(() => _pressing = true) : null,
        onTapUp: active ? (_) {
          setState(() => _pressing = false);
          widget.onPressed!();
        } : null,
        onTapCancel: active ? () => setState(() => _pressing = false) : null,

        child: AnimatedContainer(
          duration: Duration(milliseconds: 80),
          decoration: BoxDecoration(
            color: bg,
            borderRadius: radius,
          ),
          padding: EdgeInsets.all(4),
          child: widget.child,
        ),
      ),
    );
  }
}


class AgcSecondaryButton extends StatefulWidget {

  final Widget child;
  final VoidCallback? onPressed;
  final BorderRadius? borderRadius;
  final bool enabled;

  AgcSecondaryButton({
    required this.child,
    this.onPressed,
    this.borderRadius,
    this.enabled = true,
  });

  @override
  State<AgcSecondaryButton> createState() => _SecondaryButtonState();
}

class _SecondaryButtonState extends State<AgcSecondaryButton> {

  bool _hovering = false;
  bool _pressing = false;


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

    final radius = widget.borderRadius ?? BorderRadius.circular(
      Theme.of(context).radiusSm
    );

    final bool active = widget.enabled && widget.onPressed != null;

    Color bg = colorScheme.secondary;
    if (!active) {
      bg = colorScheme.secondary.withOpacity(0.4);
    } else if (_pressing) {
      bg = colorScheme.secondary.withOpacity(0.75);
    } else if (_hovering) {
      bg = colorScheme.secondary.withOpacity(0.85);
    }

    return MouseRegion(
      cursor: active ? SystemMouseCursors.click : MouseCursor.defer,
      onEnter: (_) { if (active) setState(() => _hovering = true); },
      onExit: (_) => setState(() {
        _hovering = false;
        _pressing = false;
      }),

      child: GestureDetector(
        onTapDown: active ? (_) => setState(() => _pressing = true) : null,
        onTapUp: active ? (_) {
          setState(() => _pressing = false);
          widget.onPressed!();
        } : null,
        onTapCancel: active ? () => setState(() => _pressing = false) : null,

        child: AnimatedContainer(
          duration: Duration(milliseconds: 80),
          decoration: BoxDecoration(
            color: bg,
            borderRadius: radius,
          ),
          padding: EdgeInsets.all(4),
          child: DefaultTextStyle.merge(
            style: TextStyle(color: colorScheme.secondaryForeground),
            child: IconTheme.merge(
              data: IconThemeData(color: colorScheme.secondaryForeground),
              child: widget.child,
            ),
          ),
        ),
      ),
    );
  }
}


class AgcOutlinedButton extends StatefulWidget {

  final Widget child;
  final VoidCallback? onPressed;
  final BorderRadius? borderRadius;
  final bool enabled;

  AgcOutlinedButton({
    required this.child,
    this.onPressed,
    this.borderRadius,
    this.enabled = true,
  });

  @override
  State<AgcOutlinedButton> createState() => _OutlinedButtonState();
}

class _OutlinedButtonState extends State<AgcOutlinedButton> {

  bool _hovering = false;
  bool _pressing = false;

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

    final radius = widget.borderRadius ?? BorderRadius.circular(
      Theme.of(context).radiusSm
    );

    final bool active = widget.enabled && widget.onPressed != null;

    Color bg = Colors.transparent;
    if (_pressing && active) {
      bg = colorScheme.accent.withOpacity(0.6);
    } else if (_hovering && active) {
      bg = colorScheme.accent.withOpacity(0.35);
    }

    final borderColor = active
        ? colorScheme.border
        : colorScheme.border.withOpacity(0.4);

    return MouseRegion(
      cursor: active ? SystemMouseCursors.click : MouseCursor.defer,
      onEnter: (_) { if (active) setState(() => _hovering = true); },
      onExit: (_) => setState(() {
        _hovering = false;
        _pressing = false;
      }),

      child: GestureDetector(
        onTapDown: active ? (_) => setState(() => _pressing = true) : null,
        onTapUp: active ? (_) {
          setState(() => _pressing = false);
          widget.onPressed!();
        } : null,
        onTapCancel: active ? () => setState(() => _pressing = false) : null,

        child: AnimatedContainer(
          duration: Duration(milliseconds: 80),
          decoration: BoxDecoration(
            color: bg,
            borderRadius: radius,
            border: Border.all(color: borderColor),
          ),
          padding: EdgeInsets.symmetric(horizontal: 12, vertical: 8),
          child: DefaultTextStyle.merge(
            style: TextStyle(
              color: active ? colorScheme.foreground : colorScheme.mutedForeground,
            ),
            child: IconTheme.merge(
              data: IconThemeData(
                color: active ? colorScheme.foreground : colorScheme.mutedForeground,
              ),
              child: widget.child,
            ),
          ),
        ),
      ),
    );
  }
}