// ignore_for_file: use_build_context_synchronously

import 'dart:typed_data';
import 'dart:ui' as ui;

import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';
import 'package:share_plus/share_plus.dart';

ui.Rect? shareOriginForContext(BuildContext context) {
  final renderObject = context.findRenderObject();
  if (renderObject is! RenderBox || !renderObject.hasSize) {
    return null;
  }
  return renderObject.localToGlobal(Offset.zero) & renderObject.size;
}

Future<Uint8List> captureWidgetPng(
  GlobalKey key, {
  double pixelRatio = 3.0,
}) async {
  await WidgetsBinding.instance.endOfFrame;

  final context = key.currentContext;
  if (context == null) {
    throw StateError('share target is not mounted');
  }

  final renderObject = context.findRenderObject();
  if (renderObject is! RenderRepaintBoundary) {
    throw StateError('share target is not a repaint boundary');
  }

  final image = await renderObject.toImage(pixelRatio: pixelRatio);
  final byteData = await image.toByteData(format: ui.ImageByteFormat.png);
  if (byteData == null) {
    throw StateError('failed to convert share image');
  }
  return byteData.buffer.asUint8List();
}

Future<void> sharePngFromBoundary(
  GlobalKey key, {
  required String fileName,
  String? text,
  String? subject,
  ui.Rect? sharePositionOrigin,
  double pixelRatio = 3.0,
}) async {
  final bytes = await captureWidgetPng(key, pixelRatio: pixelRatio);
  final xFile = XFile.fromData(bytes, mimeType: 'image/png', name: fileName);
  await SharePlus.instance.share(
    ShareParams(
      files: [xFile],
      text: text,
      subject: subject,
      sharePositionOrigin: sharePositionOrigin,
    ),
  );
}

Future<void> sharePlainText({
  required String text,
  String? subject,
  ui.Rect? sharePositionOrigin,
}) async {
  await SharePlus.instance.share(
    ShareParams(
      text: text,
      subject: subject,
      sharePositionOrigin: sharePositionOrigin,
    ),
  );
}