import 'package:flutter/material.dart' show Colors, Color;

extension HexColor on Color {
  /// String is in the format "aabbcc" or "ffaabbcc" with an optional leading "#".
  static Color fromHex(String hexString) {
    final buffer = StringBuffer();
    if (hexString.length == 6 || hexString.length == 7) buffer.write('ff');
    buffer.write(hexString.replaceFirst('#', ''));
    return Color(int.parse(buffer.toString(), radix: 16));
  }
}

extension RiskColor on Color {
  static const Color noRisk = Colors.transparent;
  static final Color lowRisk = HexColor.fromHex("#FFFF00");
  static final Color mediumRisk = HexColor.fromHex("#FF9000");
  static final Color highRisk = HexColor.fromHex("#FF4000");

  static Color colorForRisk(int value) {
    if (value == 1) {
      return lowRisk;
    } else if (value == 2) {
      return mediumRisk;
    } else if (value == 3) {
      return highRisk;
    }
    return noRisk;
  }
}