import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:stackwallet/utilities/assets.dart';
import 'package:stackwallet/utilities/text_styles.dart';
import 'package:stackwallet/utilities/theme/stack_colors.dart';

class NumberKey extends StatefulWidget {
  const NumberKey({
    Key? key,
    required this.number,
    required this.onPressed,
  }) : super(key: key);

  final String number;
  final ValueSetter<String> onPressed;

  @override
  State<NumberKey> createState() => _NumberKeyState();
}

class _NumberKeyState extends State<NumberKey> {
  late final String number;
  late final ValueSetter<String> onPressed;

  Color? _color;

  @override
  void initState() {
    number = widget.number;
    onPressed = widget.onPressed;

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    _color ??= Theme.of(context).extension<StackColors>()!.numberBackDefault;

    return AnimatedContainer(
      duration: const Duration(milliseconds: 200),
      curve: Curves.easeInOut,
      height: 72,
      width: 72,
      decoration: ShapeDecoration(
        shape: const StadiumBorder(),
        color: _color,
        shadows: const [],
      ),
      child: MaterialButton(
        // splashColor: Theme.of(context).extension<StackColors>()!.highlight,
        materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
        shape: const StadiumBorder(),
        onPressed: () async {
          onPressed.call(number);
          setState(() {
            _color = Theme.of(context)
                .extension<StackColors>()!
                .numberBackDefault
                .withOpacity(0.8);
          });

          Future<void>.delayed(const Duration(milliseconds: 200), () {
            if (mounted) {
              setState(() {
                _color = Theme.of(context)
                    .extension<StackColors>()!
                    .numberBackDefault;
              });
            }
          });
        },
        child: Center(
          child: Text(
            number,
            style: STextStyles.numberDefault(context),
          ),
        ),
      ),
    );
  }
}

class BackspaceKey extends StatefulWidget {
  const BackspaceKey({
    Key? key,
    required this.onPressed,
  }) : super(key: key);

  final VoidCallback onPressed;

  @override
  State<BackspaceKey> createState() => _BackspaceKeyState();
}

class _BackspaceKeyState extends State<BackspaceKey> {
  late final VoidCallback onPressed;

  Color? _color;

  @override
  void initState() {
    onPressed = widget.onPressed;
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    _color ??= Theme.of(context).extension<StackColors>()!.numpadBackDefault;
    return AnimatedContainer(
      duration: const Duration(milliseconds: 200),
      curve: Curves.easeInOut,
      height: 72,
      width: 72,
      decoration: ShapeDecoration(
        shape: const StadiumBorder(),
        color: _color,
        shadows: const [],
      ),
      child: MaterialButton(
        // splashColor: Theme.of(context).extension<StackColors>()!.highlight,
        materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
        shape: const StadiumBorder(),
        onPressed: () {
          onPressed.call();
          setState(() {
            _color = Theme.of(context)
                .extension<StackColors>()!
                .numpadBackDefault
                .withOpacity(0.8);
          });

          Future<void>.delayed(const Duration(milliseconds: 200), () {
            if (mounted) {
              setState(() {
                _color = Theme.of(context)
                    .extension<StackColors>()!
                    .numpadBackDefault;
              });
            }
          });
        },
        child: Semantics(
          label: "Backspace Button. Deletes The Last Digit.",
          excludeSemantics: true,
          child: Center(
            child: SvgPicture.asset(
              Assets.svg.delete,
              width: 20,
              height: 20,
              color:
              Theme.of(context).extension<StackColors>()!.numpadTextDefault,
            ),
          ),
        )
      ),
    );
  }
}

class SubmitKey extends StatelessWidget {
  const SubmitKey({
    Key? key,
    required this.onPressed,
  }) : super(key: key);

  final VoidCallback onPressed;

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 72,
      width: 72,
      decoration: ShapeDecoration(
        shape: const StadiumBorder(),
        color: Theme.of(context).extension<StackColors>()!.numpadBackDefault,
        shadows: const [],
      ),
      child: MaterialButton(
        // splashColor: Theme.of(context).extension<StackColors>()!.highlight,
        materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
        shape: const StadiumBorder(),
        onPressed: () {
          onPressed.call();
        },
        child: Center(
          child: SvgPicture.asset(
            Assets.svg.arrowRight,
            width: 20,
            height: 20,
            color:
                Theme.of(context).extension<StackColors>()!.numpadTextDefault,
          ),
        ),
      ),
    );
  }
}

class CustomKey extends StatelessWidget {
  const CustomKey({
    Key? key,
    required this.onPressed,
    this.iconAssetName,
    this.customKeyLabel = "Button",
  }) : super(key: key);

  final VoidCallback onPressed;
  final String? iconAssetName;
  final String customKeyLabel;

  @override
  Widget build(BuildContext context) {
    return Container(
      height: 72,
      width: 72,
      decoration: ShapeDecoration(
        shape: const StadiumBorder(),
        color: Theme.of(context).extension<StackColors>()!.numpadBackDefault,
        shadows: const [],
      ),
      child: Semantics(
        label: customKeyLabel,
        excludeSemantics: true,
        child: MaterialButton(
          // splashColor: Theme.of(context).extension<StackColors>()!.highlight,
          materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
          shape: const StadiumBorder(),
          onPressed: () {
            onPressed.call();
          },
          child: Center(
            child: iconAssetName == null
                ? null
                : SvgPicture.asset(
              iconAssetName!,
              width: 20,
              height: 20,
              color: Theme.of(context)
                  .extension<StackColors>()!
                  .numpadTextDefault,
            ),
          ),
        ),
      )
    );
  }
}

class PinKeyboard extends StatelessWidget {
  const PinKeyboard({
    Key? key,
    required this.onNumberKeyPressed,
    required this.onBackPressed,
    required this.onSubmitPressed,
    this.backgroundColor,
    this.width = 264,
    this.height = 360,
    this.customKey,
  }) : super(key: key);

  final ValueSetter<String> onNumberKeyPressed;
  final VoidCallback onBackPressed;
  final VoidCallback onSubmitPressed;
  final Color? backgroundColor;
  final double? width;
  final double? height;
  final CustomKey? customKey;

  void _backHandler() {
    onBackPressed.call();
  }

  void _submitHandler() {
    onSubmitPressed.call();
  }

  void _numberHandler(String number) {
    onNumberKeyPressed.call(number);
    HapticFeedback.lightImpact();
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      width: width,
      height: height,
      color: backgroundColor ?? Colors.transparent,
      child: Column(
        children: [
          Row(
            children: [
              NumberKey(
                number: "1",
                onPressed: _numberHandler,
              ),
              const SizedBox(
                width: 24,
              ),
              NumberKey(
                number: "2",
                onPressed: _numberHandler,
              ),
              const SizedBox(
                width: 24,
              ),
              NumberKey(
                number: "3",
                onPressed: _numberHandler,
              ),
            ],
          ),
          const SizedBox(
            height: 24,
          ),
          Row(
            children: [
              NumberKey(
                number: "4",
                onPressed: _numberHandler,
              ),
              const SizedBox(
                width: 24,
              ),
              NumberKey(
                number: "5",
                onPressed: _numberHandler,
              ),
              const SizedBox(
                width: 24,
              ),
              NumberKey(
                number: "6",
                onPressed: _numberHandler,
              ),
            ],
          ),
          const SizedBox(
            height: 24,
          ),
          Row(
            children: [
              NumberKey(
                number: "7",
                onPressed: _numberHandler,
              ),
              const SizedBox(
                width: 24,
              ),
              NumberKey(
                number: "8",
                onPressed: _numberHandler,
              ),
              const SizedBox(
                width: 24,
              ),
              NumberKey(
                number: "9",
                onPressed: _numberHandler,
              ),
            ],
          ),
          const SizedBox(
            height: 24,
          ),
          Row(
            children: [
              customKey == null
                  ? const SizedBox(
                      height: 72,
                      width: 72,
                    )
                  : customKey!,
              const SizedBox(
                width: 24,
              ),
              NumberKey(
                number: "0",
                onPressed: _numberHandler,
              ),
              const SizedBox(
                width: 24,
              ),
              BackspaceKey(
                onPressed: _backHandler,
              ),
              // SubmitKey(
              //   onPressed: _submitHandler,
              // ),
            ],
          )
        ],
      ),
    );
  }
}