export async function downloadContainerFile()

in src/commands/containers/files/downloadContainerFile.ts [39:105]
46 lines of code
4 McCabe index (conditional complexity)

export async function downloadContainerFile(context: IActionContext, node?: FileTreeItem, nodes?: FileTreeItem[]): Promise<void> {
    nodes = await multiSelectNodes(
        { ...context, noItemFoundErrorMessage: localize('vscode-docker.commands.containers.files.downloadContainerFile.noFiles', 'No files are available to download.') },
        ext.containersTree,
        'containerFile',
        node,
        nodes
    );

    const localFolderUris = await vscode.window.showOpenDialog(
        {
            canSelectFiles: false,
            canSelectFolders: true,
            canSelectMany: false,
            openLabel: localize('vscode-docker.commands.containers.files.downloadContainerFile.openLabel', 'Select'),
            title: localize('vscode-docker.commands.containers.files.downloadContainerFile.openTitle', 'Select folder for download')
        });

    if (localFolderUris === undefined || localFolderUris.length === 0) {
        throw new UserCancelledError();
    }

    const localFolderUri = localFolderUris[0];

    const files = nodes.map(n => {
        const containerFileUri = n.uri;
        const fileName = path.posix.basename(containerFileUri.path);

        return {
            containerUri: n.uri.uri,
            fileName,
            localUri: vscode.Uri.joinPath(localFolderUri, fileName)
        };
    });

    await vscode.window.withProgress(
        {
            location: vscode.ProgressLocation.Notification,
            title: localize('vscode-docker.commands.containers.files.downloadContainerFile.opening', 'Downloading File(s)...'),
            cancellable: true
        },
        async (task, token) => {
            for (const file of files) {
                if (token.isCancellationRequested) {
                    throw new UserCancelledError();
                }

                const localFileExists = await fileExists(file.localUri);

                if (localFileExists) {
                    const result = await vscode.window.showWarningMessage(
                        localize('vscode-docker.commands.containers.files.downloadContainerFile.existingFileWarning', 'The file \'{0}\' already exists in folder \'{1}\'.', file.fileName, localFolderUri.fsPath),
                        overwriteFile,
                        skipFile,
                        cancelDownload);

                    if (result === skipFile) {
                        continue;
                    } else if (result !== overwriteFile) {
                        throw new UserCancelledError();
                    }
                }

                await vscode.workspace.fs.copy(file.containerUri, file.localUri, { overwrite: true });
            }
        });
}