import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:star_lock/tools/left_slide/left_slide_logic.dart';

typedef BaseFunction<T> = void Function(T o);

/// 来源: https://blog.csdn.net/zhuowalun8427/article/details/121285947 。
class LeftSlideActions extends StatefulWidget {
  const LeftSlideActions({
    required this.tag,
    required this.actionsWidth,
    required this.actions,
    required this.child,
    Key? key,
    this.decoration,
    this.actionsWillShow,
    this.exportHideActions,
  }) : super(key: key);
  final String tag;
  final double actionsWidth;
  final List<Widget> actions;
  final Widget child;
  final Decoration? decoration;
  final VoidCallback? actionsWillShow;
  final BaseFunction<VoidCallback>? exportHideActions;

  @override
  _LeftSlideActionsState createState() => _LeftSlideActionsState();
}

class _LeftSlideActionsState extends State<LeftSlideActions>
    with TickerProviderStateMixin {
  late AnimationController _controller;
  late LeftSlideLogic logic;

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      lowerBound: -widget.actionsWidth,
      upperBound: 0,
      vsync: this,
      duration: const Duration(milliseconds: 300),
    )..addListener(() {
        logic.translateX = _controller.value;
        setState(() {});
      });
    if (widget.exportHideActions != null) {
      widget.exportHideActions!(logic.hide);
    }
    logic = LeftSlideLogic(
      controller: _controller,
      actionsWidth: widget.actionsWidth,
      actions: widget.actions,
      decoration: widget.decoration,
      actionsWillShow: widget.actionsWillShow,
      exportHideActions: widget.exportHideActions,
    );
    Get.put(logic, tag: widget.tag);
  }

  @override
  Widget build(BuildContext context) {
    return GetBuilder<LeftSlideLogic>(
        tag: widget.tag,
        builder: (LeftSlideLogic logic) {
          return Container(
            decoration: widget.decoration,
            clipBehavior: Clip.hardEdge,
            child: Stack(
              children: <Widget>[
                Positioned.fill(
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.end,
                    children: widget.actions,
                  ),
                ),
                GestureDetector(
                  onHorizontalDragUpdate: logic.onHorizontalDragUpdate,
                  onHorizontalDragEnd: logic.onHorizontalDragEnd,
                  child: Transform.translate(
                    offset: Offset(logic.translateX, 0),
                    child: Row(
                      children: <Widget>[
                        Expanded(flex: 1, child: widget.child),
                      ],
                    ),
                  ),
                ),
              ],
            ),
          );
        });
  }
}