#include <Core/Core.h>
#include <SSH/SSH.h>

using namespace Upp;



CONSOLE_APP_MAIN
{
	const char *remote_path = "readme.txt";

	Ssh ssh;
	Cout() << "Connecting to Rebex public sftp test server...\n";
	
	// Let us connect in a blocking way.
	bool b = ssh.Connect("test.rebex.net", 22, "demo", "password");
	if(b) {
		// Note that below code respresents low level, async sftp file transfer.
		
        FileOut local_file("readme_downloaded.txt");
	
		// SFtp file attributes are stored in this structure, and used by low-level methods.
   	 	SFtpAttrs file_attrs; 
   	 	
		// Now let us request a SFtp channel.
		SFtp sftp(ssh);
		
		// Chunk size is used only in gets and puts. Default chunk size is 32K		
		//sftp.ChunkSize(16 * 1024);
		
		// Now let us queue the Sftp commands.
		sftp.StartInit();
		
			// Asynhronous calls can be queued. And they have both high level and low level
			// interface. 
			// For example: StartGet has two variants:
			// 1) A low levet StartGet(): Requires a file handle (fopen) and file info (fstat) to operate on.
			//    So It requires StartOpen() and StartGetStat() methods to be called first.
			//    For this purpose, we can queue them and later run them:
                        // (Note that, any error while processing the commands will halt the queue, and clean-up the mess. So it's safe.)

	   	 	sftp.StartOpen(remote_path, SFtp::READ, 0755);
	  	 	sftp.StartGetStat(file_attrs);
	    	        sftp.StartGet(local_file);
	    	        sftp.StartClose();
	
			// 2) A high level StartGet(): This method combines the above StartOpen, StartGetStat,
			// StartGet, and StartClose respectively, and handles errors internally:
			//
			// sftp.StartGet(local_file, remote_path, SFtp::READ, 0755);
		
		sftp.StartStop();
		
		// Now that we have queued up the download, using low level api, we can run the queue asynchronously. 
		// Note that we are running a single Sftp instance here.
		// We can do this with multiple instances (using an Array<SFtp>) and multiple commands too.
		
		while(sftp.Do()) {
			if(!sftp.InProgress()) {
				if(sftp.IsSuccess()) 
					 Cout() << "File successfully downloaded.\n";
				else 
					Cout() << "File download failed. Reason: " << sftp.GetErrorDesc() << "\n";
				break;					
			}
		}	
	}
	else
		Cout() << ssh.GetErrorDesc() << "\n";
	ssh.Disconnect();
}