import 'package:flutter/material.dart';

import '../../about/internal/application/TextType.dart';
import '../../utils/Colors.dart';
import '../text/Text.dart';

/// The primary action. One per screen — if a screen appears to need two, one
/// of them is secondary.
Widget roundedCornerButton(
  String label,
  VoidCallback onPressed, {
  Color? background,
  Color? foreground,
  IconData? icon,
  bool enabled = true,
  double radius = 14,
  double verticalPadding = 16,
}) {
  final Color bg = enabled ? (background ?? colorPrimaryDark) : colorGrey;
  final Color fg = foreground ?? colorWhite;

  return ElevatedButton(
    onPressed: enabled ? onPressed : null,
    style: ElevatedButton.styleFrom(
      elevation: 0,
      backgroundColor: bg,
      disabledBackgroundColor: colorGrey.withValues(alpha: 0.4),
      padding: EdgeInsets.symmetric(vertical: verticalPadding),
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(radius),
      ),
    ),
    child: Row(
      mainAxisSize: MainAxisSize.min,
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        if (icon != null) ...[
          Icon(icon, size: 16, color: fg),
          const SizedBox(width: 8),
        ],
        text(label, 14, TextType.Bold, color: fg),
      ],
    ),
  );
}

/// The secondary action — outlined, never filled, so the hierarchy is never
/// ambiguous.
Widget outlinedActionButton(
  String label,
  VoidCallback onPressed, {
  Color? foreground,
  IconData? icon,
  bool enabled = true,
  double radius = 14,
}) {
  final Color fg = enabled ? (foreground ?? colorPrimaryDark) : colorGrey;

  return OutlinedButton(
    onPressed: enabled ? onPressed : null,
    style: OutlinedButton.styleFrom(
      side: BorderSide(color: fg.withValues(alpha: 0.35), width: 1),
      padding: const EdgeInsets.symmetric(vertical: 16),
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(radius),
      ),
    ),
    child: Row(
      mainAxisSize: MainAxisSize.min,
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        if (icon != null) ...[
          Icon(icon, size: 16, color: fg),
          const SizedBox(width: 8),
        ],
        text(label, 14, TextType.Bold, color: fg),
      ],
    ),
  );
}

Widget textButton(
  String label,
  VoidCallback onPressed, {
  Color? color,
  double textSize = 13,
  TextType type = TextType.Regular,
}) {
  return TextButton(
    onPressed: onPressed,
    child: text(label, textSize, type, color: color ?? colorGrey2),
  );
}

Widget iconButton(
  Widget icon,
  VoidCallback onPressed, {
  bool bordered = false,
  Color? borderColor,
  Color? background,
  double radius = 10,
  double size = 38,
}) {
  return GestureDetector(
    onTap: onPressed,
    child: Container(
      width: size,
      height: size,
      alignment: Alignment.center,
      decoration: BoxDecoration(
        color: background ?? Colors.transparent,
        borderRadius: BorderRadius.circular(radius),
        border: bordered
            ? Border.all(color: borderColor ?? colorBorder, width: 1)
            : null,
      ),
      child: icon,
    ),
  );
}

/// The destructive action — abandoning, which costs the most debt of all and
/// so is always visually distinct from completing.
Widget destructiveButton(
  String label,
  VoidCallback onPressed, {
  IconData? icon,
  bool enabled = true,
}) {
  return roundedCornerButton(
    label,
    onPressed,
    background: colorDestructive,
    foreground: colorWhite,
    icon: icon,
    enabled: enabled,
  );
}

/// A segmented selector, used for class, energy, proof type and tone.
Widget segmentedSelector<T>({
  required List<T> options,
  required T selected,
  required String Function(T) label,
  required void Function(T) onSelected,
  Color? activeColor,
}) {
  final Color active = activeColor ?? colorPrimaryDark;

  return Wrap(
    spacing: 8,
    runSpacing: 8,
    children: options.map((option) {
      final bool isSelected = option == selected;
      return GestureDetector(
        onTap: () => onSelected(option),
        child: Container(
          padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
          decoration: BoxDecoration(
            color: isSelected ? active : colorWhite,
            borderRadius: BorderRadius.circular(10),
            border: Border.all(
              color: isSelected ? active : colorBorder,
              width: 1,
            ),
          ),
          child: text(
            label(option),
            12,
            isSelected ? TextType.Bold : TextType.Regular,
            color: isSelected ? colorWhite : colorGrey2,
          ),
        ),
      );
    }).toList(),
  );
}