import 'package:aman_kassa_flutter/shared/app_colors.dart';
import 'package:aman_kassa_flutter/widgets/components/calculator/calculator.dart';
import 'package:flutter/material.dart';

typedef void CalculatorButtonTapCallback({String buttonText});

List operationsBlue = [Calculations.ADD,Calculations.MULTIPLY,Calculations.EQUAL,Calculations.ERASE];
List operationsRed = [Calculations.CLEAR];

class CalculatorButton extends StatelessWidget {
  CalculatorButton({this.text, @required this.onTap});

  final String text;
  final CalculatorButtonTapCallback onTap;

  @override
  Widget build(BuildContext context) {
    return Expanded(
        child: Container(
            decoration: BoxDecoration(
              border: Border.all(
                color: Colors.black,
                width: 1.2,
              ),
            ),
            child: FlatButton(
              onPressed: () => onTap(buttonText: text),
              child: Text(
                text,
                style: TextStyle(fontSize: 25, fontWeight: FontWeight.w700, color: buildTextColor()),
              ),
              padding: const EdgeInsets.all(20),
              highlightColor: Colors.blueGrey[100],
              splashColor: Colors.blueAccent[100],
              color: buildMainColor(),
            )));
  }

  buildMainColor() {
    if(operationsBlue.indexOf(text)>-1){
      return primaryColor;
    } else if(operationsRed.indexOf(text)>-1){
      return redColor;
    }
    return fillColor;
  }
  buildTextColor() {
    if(operationsBlue.indexOf(text)>-1){
      return whiteColor;
    } else if(operationsRed.indexOf(text)>-1){
      return whiteColor;
    }
    return Colors.black;
  }
}