[verified] Publish ReelBox source under GPLv3
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part of '../task.dart';
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/// Interface for tasks that operate with [Uri] instead of file and directory
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/// paths.
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///
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/// This allows the Uri version of the different tasks to be testable using
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/// `task is UriTask`
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abstract interface class UriTask {
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/// Returns the URI of the directory associated with the task, or null
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Uri? get directoryUri;
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/// Returns the URI of the file associated with the task, or null
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Uri? get fileUri;
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}
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/// Mixin that implements [UriTask] with the standard implementation, which
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/// implements the getters for [directoryUri] and [fileUri], and overrides
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/// the getters for [directory] and [filename] because the actual contents
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/// of those properties contain encoded information that should not be
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/// interpreted directly
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base mixin _UriTaskMixin on Task implements UriTask {
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@override
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Uri? get directoryUri =>
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super.directory.isNotEmpty ? Uri.tryParse(super.directory) : null;
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@override
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Uri? get fileUri {
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final (:filename, :uri) = unpack(super.filename);
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return uri;
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}
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@override
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String get directory => '';
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@override
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String get filename {
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final (:filename, :uri) = unpack(super.filename);
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return filename ?? '';
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}
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/// Creates JSON map of this object
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@override
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Map<String, dynamic> toJson() => {
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...super.toJson(),
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'filename': super.filename, // replace with raw string
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'directory': super.directory, // replace with raw string
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};
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}
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final class UriDownloadTask extends DownloadTask with _UriTaskMixin {
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/// Creates [UriDownloadTask] using a URI as the destination directory
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///
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/// For Android:
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/// Content URIs are related to the Android Storage Framework that makes it
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/// easier to get access to a file system location without the need for
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/// app permissions, provided the user has chosen that location using a
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/// file picker. They follow the content:// scheme, and can be obtained
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/// by calling [UriUtils.pickDirectory].
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///
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/// For other platforms:
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/// File URIs follow the file:// scheme and point to a destination on the
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/// file system. A file:// URI is returned from [UriUtils.pickDirectory] on platforms
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/// other than Android.
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///
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/// The [directoryUri] can be obtained using the
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/// [directoryUri] getter. [directory] will always return the empty string
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///
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/// Note that the result of [Task.filePath] is undefined when using a URI, as
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/// not all Uri types can be converted to a file name
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UriDownloadTask({
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super.taskId,
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required super.url,
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super.urlQueryParameters,
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String? filename,
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super.headers,
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super.httpRequestMethod,
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super.post,
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required Uri directoryUri,
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super.group,
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super.updates,
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super.requiresWiFi,
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super.retries,
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super.allowPause,
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super.priority,
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super.metaData,
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super.displayName,
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super.creationTime,
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super.options,
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super.transferHints,
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super.notificationConfig,
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super.stallTimeout,
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}) : super(
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baseDirectory: BaseDirectory.root,
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directory: directoryUri.toString(),
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filename: switch ((filename, directoryUri)) {
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(DownloadTask.suggestedFilename, _) =>
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DownloadTask.suggestedFilename,
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(null, Uri(scheme: 'file')) => () {
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final randomFilename = Random().nextInt(1 << 32).toString();
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return pack(
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randomFilename,
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Uri.file(
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'${directoryUri.path}/$randomFilename',
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windows: Platform.isWindows,
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),
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);
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}(),
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(String filename, Uri(scheme: 'file')) => pack(
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filename,
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Uri.file(
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'${directoryUri.path}/$filename',
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windows: Platform.isWindows,
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),
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),
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_ => filename,
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},
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) {
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assert(
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Task.allowedUriSchemes.contains(directoryUri.scheme),
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'Directory URI scheme must be one of ${Task.allowedUriSchemes}',
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);
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if (_pathSeparatorRegExp.hasMatch(filename ?? '')) {
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throw ArgumentError('Filename cannot contain path separators');
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}
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}
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/// Creates [Task] object from JsonMap
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///
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/// Only used by subclasses. Use [Task.createFromJson] to create a properly
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/// subclassed [Task] from the [json]
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UriDownloadTask.fromJson(super.json) : super.fromJson();
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@override
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UriDownloadTask copyWith({
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String? taskId,
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String? url,
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String? filename,
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Map<String, String>? headers,
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String? httpRequestMethod,
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Object? post,
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Uri? directoryUri,
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String? directory,
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BaseDirectory? baseDirectory,
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String? group,
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Updates? updates,
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bool? requiresWiFi,
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int? retries,
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int? retriesRemaining,
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bool? allowPause,
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int? priority,
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String? metaData,
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String? displayName,
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DateTime? creationTime,
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TaskOptions? options,
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Set<TransferHint>? transferHints,
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TaskNotificationConfig? notificationConfig,
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Duration? stallTimeout,
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}) => UriDownloadTask(
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taskId: taskId ?? this.taskId,
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url: url ?? this.url,
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filename: filename ?? this.filename,
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headers: headers ?? this.headers,
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httpRequestMethod: httpRequestMethod ?? this.httpRequestMethod,
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post: post ?? postBody,
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directoryUri: directoryUri ?? this.directoryUri ?? Uri.base,
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group: group ?? this.group,
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updates: updates ?? this.updates,
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requiresWiFi: requiresWiFi ?? this.requiresWiFi,
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retries: retries ?? this.retries,
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allowPause: allowPause ?? this.allowPause,
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priority: priority ?? this.priority,
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metaData: metaData ?? this.metaData,
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displayName: displayName ?? this.displayName,
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creationTime: creationTime ?? this.creationTime,
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options: options ?? this.options,
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transferHints: transferHints ?? this.transferHints,
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notificationConfig: notificationConfig ?? this.notificationConfig,
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stallTimeout: stallTimeout ?? this.stallTimeout,
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)..retriesRemaining = retriesRemaining ?? this.retriesRemaining;
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@override
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String get taskType => 'UriDownloadTask';
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}
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final class UriUploadTask extends UploadTask with _UriTaskMixin {
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/// Creates [UploadTask] from a URI
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///
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/// The [fileUri] will can be obtained
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/// using [fileUri] (do not access the [filename] property directly).
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/// If a [filename] argument is supplied in this constructor,
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/// it will be used, otherwise the filename will be derived from the URL
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UriUploadTask({
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required Uri fileUri,
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super.taskId,
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required super.url,
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super.urlQueryParameters,
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String? filename,
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super.headers,
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String? httpRequestMethod,
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super.post,
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super.fileField = 'file',
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String? mimeType,
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Map<String, String>? fields,
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super.group,
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super.updates,
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super.requiresWiFi,
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super.retries,
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super.priority,
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super.metaData,
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super.displayName,
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super.creationTime,
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super.options,
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super.transferHints,
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super.notificationConfig,
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super.stallTimeout,
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}) : super(
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baseDirectory: BaseDirectory.root,
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filename: filename != null
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? pack(filename, fileUri)
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: fileUri.toString(),
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httpRequestMethod: httpRequestMethod ?? 'POST',
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mimeType: mimeType ?? 'application/octet-stream',
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fields: fields ?? {},
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) {
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assert(
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Task.allowedUriSchemes.contains(fileUri.scheme),
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'URI scheme must be one of ${Task.allowedUriSchemes}',
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);
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}
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/// Creates [Task] object from JsonMap
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///
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/// Only used by subclasses. Use [Task.createFromJson] to create a properly
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/// subclassed [Task] from the [json]
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UriUploadTask.fromJson(super.json) : super.fromJson();
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@override
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UriUploadTask copyWith({
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Uri? fileUri,
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String? taskId,
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String? url,
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String? filename,
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Map<String, String>? headers,
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String? httpRequestMethod,
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Object? post,
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String? fileField,
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String? mimeType,
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Map<String, String>? fields,
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String? directory,
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BaseDirectory? baseDirectory,
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String? group,
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Updates? updates,
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bool? requiresWiFi,
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int? priority,
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int? retries,
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int? retriesRemaining,
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bool? allowPause,
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String? metaData,
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String? displayName,
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DateTime? creationTime,
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TaskOptions? options,
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Set<TransferHint>? transferHints,
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TaskNotificationConfig? notificationConfig,
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Duration? stallTimeout,
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}) => UriUploadTask(
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fileUri: fileUri ?? this.fileUri ?? Uri.base,
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taskId: taskId ?? this.taskId,
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url: url ?? this.url,
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filename: filename ?? this.filename,
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headers: headers ?? this.headers,
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httpRequestMethod: httpRequestMethod ?? this.httpRequestMethod,
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post: post as String? ?? this.post,
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fileField: fileField ?? this.fileField,
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mimeType: mimeType ?? this.mimeType,
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fields: fields ?? this.fields,
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group: group ?? this.group,
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updates: updates ?? this.updates,
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requiresWiFi: requiresWiFi ?? this.requiresWiFi,
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priority: priority ?? this.priority,
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retries: retries ?? this.retries,
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metaData: metaData ?? this.metaData,
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displayName: displayName ?? this.displayName,
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creationTime: creationTime ?? this.creationTime,
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options: options ?? this.options,
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transferHints: transferHints ?? this.transferHints,
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notificationConfig: notificationConfig ?? this.notificationConfig,
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stallTimeout: stallTimeout ?? this.stallTimeout,
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)..retriesRemaining = retriesRemaining ?? this.retriesRemaining;
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@override
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String get taskType => 'UriUploadTask';
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}
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