//
// Spine Runtimes License Agreement
// Last updated April 5, 2025. Replaces all prior versions.
//
// Copyright (c) 2013-2025, Esoteric Software LLC
//
// Integration of the Spine Runtimes into software or otherwise creating
// derivative works of the Spine Runtimes is permitted under the terms and
// conditions of Section 2 of the Spine Editor License Agreement:
// http://esotericsoftware.com/spine-editor-license
//
// Otherwise, it is permitted to integrate the Spine Runtimes into software
// or otherwise create derivative works of the Spine Runtimes (collectively,
// "Products"), provided that each user of the Products must obtain their own
// Spine Editor license and redistribution of the Products in any form must
// include this license and copyright notice.
//
// THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
// BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//

import 'package:spine_flutter/spine_flutter.dart';
import 'package:flutter/material.dart';

class DebugRendering extends StatelessWidget {
  const DebugRendering({super.key});

  @override
  Widget build(BuildContext context) {
    reportLeaks();

    const debugRenderer = DebugRenderer();
    final controller = SpineWidgetController(
      onInitialized: (controller) {
        controller.animationState.setAnimation(0, "walk", true);
      },
      onBeforePaint: (controller, canvas) {
        // Save the current transform and other canvas state
        canvas.save();

        // Get the current canvas transform an invert it, so we can work in the
        // canvas coordinate system.
        final currentMatrix = canvas.getTransform();
        final invertedMatrix = Matrix4.tryInvert(Matrix4.fromFloat64List(currentMatrix));
        if (invertedMatrix != null) {
          canvas.transform(invertedMatrix.storage);
        }

        // Draw something.
        final Paint paint = Paint()
          ..color = Colors.black
          ..strokeWidth = 2.0;

        canvas.drawLine(
          const Offset(0, 0),
          Offset(canvas.getLocalClipBounds().width, canvas.getLocalClipBounds().height),
          paint,
        );

        // Restore the old transform and canvas state
        canvas.restore();
      },
      onAfterPaint: (controller, canvas, commands) {
        debugRenderer.render(controller.drawable, canvas, commands);
      },
    );

    return Scaffold(
      appBar: AppBar(title: const Text('Debug Renderer')),
      body: SpineWidget.fromAsset("assets/spineboy.atlas", "assets/spineboy-pro.skel", controller),
    );
  }
}