import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'package:kmpdfkit_demo/widgets/contains.dart';


///
/// compdfkit_widget.dart
///
///  Copyright © 2014-2023 PDF Technologies, Inc. All Rights Reserved.
///
///  THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
///  AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
///  UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
///  This notice may not be removed from this file.

typedef ComPDFKitWidgetCreateCallback = void Function();

class ComPDFKitWidget extends StatefulWidget {
  final String? documentPath;
  final dynamic configuration;
  final ComPDFKitWidgetCreateCallback? onComPDFKitWidgetCreate;

  const ComPDFKitWidget(
      {Key? key,
      this.documentPath,
      this.configuration,
      this.onComPDFKitWidgetCreate})
      : super(key: key);

  @override
  State<ComPDFKitWidget> createState() => _ComPDFKitWidgetState();
}

class _ComPDFKitWidgetState extends State<ComPDFKitWidget> {

  @override
  Widget build(BuildContext context) {
    const String viewType = ChannelNames.comPDFKitViewType;
    final Map<String, dynamic> creationParams = <String, dynamic>{
      'document': widget.documentPath,
      'configuration': widget.configuration
    };

    if (Platform.isAndroid) {
      return PlatformViewLink(
          surfaceFactory:
              (BuildContext context, PlatformViewController controller) {
            return AndroidViewSurface(
                controller: controller as AndroidViewController,
                hitTestBehavior: PlatformViewHitTestBehavior.opaque,
                gestureRecognizers: const <
                    Factory<OneSequenceGestureRecognizer>>{});
          },
          onCreatePlatformView: (PlatformViewCreationParams params) {
            return PlatformViewsService.initSurfaceAndroidView(
                id: params.id,
                viewType: viewType,
                creationParams: creationParams,
                creationParamsCodec: const StandardMessageCodec(),
                layoutDirection: TextDirection.ltr)
              ..addOnPlatformViewCreatedListener(params.onPlatformViewCreated)
              ..addOnPlatformViewCreatedListener(onPlatformViewCreated)
              ..create();
          },
          viewType: viewType);
    } else if (Platform.isIOS) {
      return UiKitView(
        viewType: viewType,
        layoutDirection: TextDirection.ltr,
        hitTestBehavior: PlatformViewHitTestBehavior.opaque,
        creationParams: creationParams,
        creationParamsCodec: const StandardMessageCodec(),

        onPlatformViewCreated: (id) {
          onPlatformViewCreated(id);
        },
      );
    } else {
      return const Center(child: Text('demo only support android and ios'));
    }
  }

  Future<void> onPlatformViewCreated(int id) async {
    if (widget.onComPDFKitWidgetCreate != null) {
      widget.onComPDFKitWidgetCreate!();
    }
  }
}