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benjibennn
378
lib/flutterlib/upload_data.dart
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378
lib/flutterlib/upload_data.dart
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import 'dart:async';
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import 'package:file_picker/file_picker.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/foundation.dart';
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import 'package:google_fonts/google_fonts.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:mime_type/mime_type.dart';
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import 'package:video_player/video_player.dart';
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import 'flutter_theme.dart';
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import 'flutter_util.dart';
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const allowedFormats = {'image/png', 'image/jpeg', 'video/mp4', 'image/gif'};
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class SelectedFile {
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const SelectedFile({
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this.storagePath = '',
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this.filePath,
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required this.bytes,
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this.dimensions,
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this.blurHash,
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});
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final String storagePath;
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final String? filePath;
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final Uint8List bytes;
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final MediaDimensions? dimensions;
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final String? blurHash;
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}
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class MediaDimensions {
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const MediaDimensions({
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this.height,
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this.width,
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});
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final double? height;
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final double? width;
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}
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enum MediaSource {
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photoGallery,
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videoGallery,
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camera,
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}
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Future<List<SelectedFile>?> selectMediaWithSourceBottomSheet({
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required BuildContext context,
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String? storageFolderPath,
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double? maxWidth,
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double? maxHeight,
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int? imageQuality,
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required bool allowPhoto,
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bool allowVideo = false,
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String pickerFontFamily = 'Roboto',
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Color textColor = const Color(0xFF111417),
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Color backgroundColor = const Color(0xFFF5F5F5),
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bool includeDimensions = false,
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bool includeBlurHash = false,
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}) async {
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final createUploadMediaListTile =
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(String label, MediaSource mediaSource) => ListTile(
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title: Text(
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label,
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textAlign: TextAlign.center,
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style: GoogleFonts.getFont(
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pickerFontFamily,
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color: textColor,
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fontWeight: FontWeight.w600,
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fontSize: 20,
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),
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),
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tileColor: backgroundColor,
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dense: false,
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onTap: () => Navigator.pop(
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context,
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mediaSource,
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),
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);
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final mediaSource = await showModalBottomSheet<MediaSource>(
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context: context,
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backgroundColor: backgroundColor,
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builder: (context) {
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return Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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if (!kIsWeb) ...[
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Padding(
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padding: EdgeInsets.fromLTRB(0, 8, 0, 0),
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child: ListTile(
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title: Text(
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'Choose Source',
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textAlign: TextAlign.center,
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style: GoogleFonts.getFont(
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pickerFontFamily,
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color: textColor.withOpacity(0.65),
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fontWeight: FontWeight.w500,
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fontSize: 20,
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),
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),
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tileColor: backgroundColor,
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dense: false,
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),
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),
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const Divider(),
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],
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if (allowPhoto && allowVideo) ...[
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createUploadMediaListTile(
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'Gallery (Photo)',
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MediaSource.photoGallery,
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),
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const Divider(),
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createUploadMediaListTile(
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'Gallery (Video)',
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MediaSource.videoGallery,
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),
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] else if (allowPhoto)
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createUploadMediaListTile(
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'Gallery',
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MediaSource.photoGallery,
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)
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else
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createUploadMediaListTile(
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'Gallery',
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MediaSource.videoGallery,
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),
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if (!kIsWeb) ...[
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const Divider(),
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createUploadMediaListTile('Camera', MediaSource.camera),
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const Divider(),
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],
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const SizedBox(height: 10),
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],
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);
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});
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if (mediaSource == null) {
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return null;
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}
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return selectMedia(
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storageFolderPath: storageFolderPath,
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maxWidth: maxWidth,
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maxHeight: maxHeight,
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imageQuality: imageQuality,
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isVideo: mediaSource == MediaSource.videoGallery ||
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(mediaSource == MediaSource.camera && allowVideo && !allowPhoto),
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mediaSource: mediaSource,
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includeDimensions: includeDimensions,
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includeBlurHash: includeBlurHash,
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);
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}
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Future<List<SelectedFile>?> selectMedia({
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String? storageFolderPath,
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double? maxWidth,
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double? maxHeight,
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int? imageQuality,
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bool isVideo = false,
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MediaSource mediaSource = MediaSource.camera,
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bool multiImage = false,
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bool includeDimensions = false,
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bool includeBlurHash = false,
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}) async {
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final picker = ImagePicker();
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if (multiImage) {
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final pickedMediaFuture = picker.pickMultiImage(
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maxWidth: maxWidth,
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maxHeight: maxHeight,
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imageQuality: imageQuality,
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);
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final pickedMedia = await pickedMediaFuture;
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if (pickedMedia.isEmpty) {
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return null;
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}
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return Future.wait(pickedMedia.asMap().entries.map((e) async {
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final index = e.key;
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final media = e.value;
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final mediaBytes = await media.readAsBytes();
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final path = _getStoragePath(storageFolderPath, media.name, false, index);
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final dimensions = includeDimensions
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? isVideo
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? _getVideoDimensions(media.path)
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: _getImageDimensions(mediaBytes)
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: null;
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return SelectedFile(
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storagePath: path,
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filePath: media.path,
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bytes: mediaBytes,
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dimensions: await dimensions,
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);
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}));
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}
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final source = mediaSource == MediaSource.camera
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? ImageSource.camera
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: ImageSource.gallery;
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final pickedMediaFuture = isVideo
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? picker.pickVideo(source: source)
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: picker.pickImage(
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maxWidth: maxWidth,
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maxHeight: maxHeight,
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imageQuality: imageQuality,
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source: source,
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);
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final pickedMedia = await pickedMediaFuture;
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final mediaBytes = await pickedMedia?.readAsBytes();
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if (mediaBytes == null) {
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return null;
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}
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final path = _getStoragePath(storageFolderPath, pickedMedia!.name, isVideo);
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final dimensions = includeDimensions
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? isVideo
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? _getVideoDimensions(pickedMedia.path)
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: _getImageDimensions(mediaBytes)
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: null;
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return [
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SelectedFile(
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storagePath: path,
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filePath: pickedMedia.path,
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bytes: mediaBytes,
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dimensions: await dimensions,
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),
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];
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}
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bool validateFileFormat(String filePath, BuildContext context) {
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if (allowedFormats.contains(mime(filePath))) {
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return true;
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}
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ScaffoldMessenger.of(context)
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..hideCurrentSnackBar()
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..showSnackBar(SnackBar(
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content: Text('Invalid file format: ${mime(filePath)}'),
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));
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return false;
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}
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Future<SelectedFile?> selectFile({
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String? storageFolderPath,
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List<String>? allowedExtensions,
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}) =>
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selectFiles(
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storageFolderPath: storageFolderPath,
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allowedExtensions: allowedExtensions,
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multiFile: false,
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).then((value) => value?.first);
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Future<List<SelectedFile>?> selectFiles({
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String? storageFolderPath,
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List<String>? allowedExtensions,
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bool multiFile = false,
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}) async {
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final pickedFiles = await FilePicker.platform.pickFiles(
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type: allowedExtensions != null ? FileType.custom : FileType.any,
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allowedExtensions: allowedExtensions,
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withData: true,
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allowMultiple: multiFile,
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);
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if (pickedFiles == null || pickedFiles.files.isEmpty) {
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return null;
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}
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if (multiFile) {
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return Future.wait(pickedFiles.files.asMap().entries.map((e) async {
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final index = e.key;
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final file = e.value;
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final storagePath =
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_getStoragePath(storageFolderPath, file.name, false, index);
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return SelectedFile(
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storagePath: storagePath,
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filePath: isWeb ? null : file.path,
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bytes: file.bytes!,
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);
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}));
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}
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final file = pickedFiles.files.first;
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if (file.bytes == null) {
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return null;
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}
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final storagePath = _getStoragePath(storageFolderPath, file.name, false);
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return [
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SelectedFile(
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storagePath: storagePath,
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filePath: isWeb ? null : file.path,
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bytes: file.bytes!,
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)
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];
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}
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List<SelectedFile> selectedFilesFromUploadedFiles(
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List<FFUploadedFile> uploadedFiles, {
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String? storageFolderPath,
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bool isMultiData = false,
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}) =>
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uploadedFiles.asMap().entries.map(
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(entry) {
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final index = entry.key;
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final file = entry.value;
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return SelectedFile(
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storagePath: _getStoragePath(
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storageFolderPath != null ? storageFolderPath : null,
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file.name!,
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false,
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isMultiData ? index : null,
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),
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bytes: file.bytes!);
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},
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).toList();
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Future<MediaDimensions> _getImageDimensions(Uint8List mediaBytes) async {
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final image = await decodeImageFromList(mediaBytes);
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return MediaDimensions(
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width: image.width.toDouble(),
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height: image.height.toDouble(),
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);
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}
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Future<MediaDimensions> _getVideoDimensions(String path) async {
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final VideoPlayerController videoPlayerController =
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VideoPlayerController.asset(path);
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await videoPlayerController.initialize();
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final size = videoPlayerController.value.size;
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return MediaDimensions(width: size.width, height: size.height);
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}
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String _getStoragePath(
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String? pathPrefix,
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String filePath,
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bool isVideo, [
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int? index,
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]) {
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pathPrefix = _removeTrailingSlash(pathPrefix);
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final timestamp = DateTime.now().microsecondsSinceEpoch;
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// Workaround fixed by https://github.com/flutter/plugins/pull/3685
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// (not yet in stable).
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final ext = isVideo ? 'mp4' : filePath.split('.').last;
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final indexStr = index != null ? '_$index' : '';
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return '$pathPrefix/$timestamp$indexStr.$ext';
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}
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String getSignatureStoragePath([String? pathPrefix]) {
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pathPrefix = _removeTrailingSlash(pathPrefix);
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final timestamp = DateTime.now().microsecondsSinceEpoch;
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return '$pathPrefix/signature_$timestamp.png';
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}
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void showUploadMessage(
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BuildContext context,
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String message, {
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bool showLoading = false,
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}) {
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ScaffoldMessenger.of(context)
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..hideCurrentSnackBar()
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..showSnackBar(
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SnackBar(
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content: Row(
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children: [
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if (showLoading)
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Padding(
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padding: EdgeInsetsDirectional.only(end: 10.0),
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child: CircularProgressIndicator(
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valueColor: Theme.of(context).brightness == Brightness.dark
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? AlwaysStoppedAnimation<Color>(
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FlutterTheme.of(context).accent4)
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: null,
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),
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),
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Text(message),
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],
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),
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duration: showLoading ? Duration(days: 1) : Duration(seconds: 4),
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),
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);
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}
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String? _removeTrailingSlash(String? path) => path != null && path.endsWith('/')
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? path.substring(0, path.length - 1)
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: path;
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