From e0eabbd9a84308478853bcc042cd56ef0c3b9e12 Mon Sep 17 00:00:00 2001
From: binlaab <josemgpenaranda@gmail.com>
Date: Sat, 25 Apr 2026 20:18:44 +0200
Subject: [PATCH] uwu

---
 es/um/redes/nanoFiles/logic/NFController.java | 76 +++++++++++++------
 .../nanoFiles/tcp/message/PeerMessage.java    | 20 +++++
 .../nanoFiles/tcp/message/PeerMessageOps.java | 18 ++++-
 3 files changed, 90 insertions(+), 24 deletions(-)

diff --git a/es/um/redes/nanoFiles/logic/NFController.java b/es/um/redes/nanoFiles/logic/NFController.java
index 084eca1..bc4631b 100644
--- a/es/um/redes/nanoFiles/logic/NFController.java
+++ b/es/um/redes/nanoFiles/logic/NFController.java
@@ -223,22 +223,39 @@ public class NFController {
 		 * clientStatus.
 		 */
 		boolean commandAllowed = true;
-		switch (currentCommand) {
-		case NFCommands.COM_MYFILES: {
-			commandAllowed = true;
-			break;
-		}
-		
-		case NFCommands.COM_PING: {
-			
-			// ?????
-		}
-		
-		default:
-			// System.err.println("ERROR: undefined behaviour for " + currentCommand + "
-			// command!");
-		}
-		return commandAllowed;
+	    switch (currentCommand) {
+	        //Comandos SIEMPRE permitidos
+	        case NFCommands.COM_MYFILES:
+	        case NFCommands.COM_QUIT:
+	        case NFCommands.COM_HELP:
+	        case NFCommands.COM_NICK:
+	            commandAllowed = true;
+	            break;
+	        //Comandos permitidos:OFFLINE
+	        case NFCommands.COM_PING:
+	            commandAllowed = (currentState == OFFLINE);
+	            if (!commandAllowed) {
+	                System.err.println("* Ya estás conectado al directorio. No necesitas hacer ping de nuevo.");
+	            }
+	            break;
+	        //Comandos permitidos:ONLINE
+	        case NFCommands.COM_FILELIST_DIR:
+	        case NFCommands.COM_PEERLIST:
+	        case NFCommands.COM_SERVE:
+	        case NFCommands.COM_DOWNLOAD_DIR:
+	        case NFCommands.COM_FILELIST_PEER:
+	        case NFCommands.COM_DOWNLOAD_PEER:
+	            commandAllowed = (currentState == ONLINE);
+	            if (!commandAllowed) {
+	                System.err.println("* Comando no permitido en estado OFFLINE. Haz un 'ping' primero.");
+	            }
+	            break;
+
+	        default:
+	            commandAllowed = false;
+	            System.err.println("ERROR: undefined behaviour for " + currentCommand + " command!");
+	    }
+	    return commandAllowed;
 	}
 
 	private void updateCurrentState(boolean success) {
@@ -248,12 +265,27 @@ public class NFController {
 		 * siguiente estado y así permitir unos u otros comandos en cada caso.
 		 */
 		if (!success) {
-			return;
-		}
-		switch (currentCommand) {
-		default:
-		}
-
+	        return; //Si falla, no cambiamos de estado
+	    }
+	    
+	    switch (currentCommand) {
+	        case NFCommands.COM_PING:
+	            currentState = ONLINE;
+	            break;
+	            
+	        case NFCommands.COM_QUIT:
+	            currentState = OFFLINE;
+	            break;
+	            
+	        default:
+	            /*
+	             * Los únicos comandos que cambian el estado del autómata son el 
+	             * 'ping' para ponerlo en ONLINE, y el 'quit' para ponerlo en
+	             * OFFLINE, por lo tanto, los demás comandos no alterarán el 
+	             * estado del autómata
+	             */
+	            break;
+	    }
 	}
 
 	private void showMyLocalFiles() {
diff --git a/es/um/redes/nanoFiles/tcp/message/PeerMessage.java b/es/um/redes/nanoFiles/tcp/message/PeerMessage.java
index c786e41..4e7ad8d 100644
--- a/es/um/redes/nanoFiles/tcp/message/PeerMessage.java
+++ b/es/um/redes/nanoFiles/tcp/message/PeerMessage.java
@@ -23,6 +23,8 @@ public class PeerMessage {
 	private String fileHash;
 	private byte filenameLong;
 	private String filenameVal;
+	
+	private byte[] fileData;
 
 
 
@@ -88,6 +90,14 @@ public class PeerMessage {
 	public void setFilenameVal(String filenameVal) {
 		this.filenameVal = filenameVal;
 	}
+	
+	public byte[] getFileData() {
+	    return fileData;
+	}
+
+	public void setFileData(byte[] fileData) {
+	    this.fileData = fileData;
+	}
 
 	/**
 	 * Método de clase para parsear los campos de un mensaje y construir el objeto
@@ -137,6 +147,16 @@ public class PeerMessage {
 			message.setFilenameVal(new String(filenameVal));
 			break;
 		}
+		
+		case PeerMessageOps.OPCODE_REQUEST_PEER_DL: {
+			int longitudSubHash = (int)dis.readByte();
+			byte[] subHash = new byte[longitudSubHash];
+			dis.readFully(subHash);
+			break;
+			// buscar archivo supongo
+			
+		}
+			
 
 
 
diff --git a/es/um/redes/nanoFiles/tcp/message/PeerMessageOps.java b/es/um/redes/nanoFiles/tcp/message/PeerMessageOps.java
index 9f903b6..698c0bd 100644
--- a/es/um/redes/nanoFiles/tcp/message/PeerMessageOps.java
+++ b/es/um/redes/nanoFiles/tcp/message/PeerMessageOps.java
@@ -15,6 +15,12 @@ public class PeerMessageOps {
 	public static final byte OPCODE_REQUEST_PEER_FILES = 1;
 	public static final byte OPCODE_PEER_FILE = 2;
 	public static final byte OPCODE_PEER_FILES_ERROR = 3;
+	
+	public static final byte OPCODE_REQUEST_PEER_DL = 4;
+	public static final byte OPCODE_FILE_NOT_FOUND = 5;
+	public static final byte OPCODE_AMBIGUOUS = 6;
+	public static final byte OPCODE_PEER_DL = 7;
+	
 
 
 
@@ -26,12 +32,20 @@ public class PeerMessageOps {
 	private static final Byte[] _valid_opcodes = { OPCODE_INVALID_CODE,
 			OPCODE_REQUEST_PEER_FILES, 
 			OPCODE_PEER_FILE, 
-			OPCODE_PEER_FILES_ERROR
+			OPCODE_PEER_FILES_ERROR,
+			OPCODE_REQUEST_PEER_DL,
+			OPCODE_FILE_NOT_FOUND,
+			OPCODE_AMBIGUOUS,
+			OPCODE_PEER_DL
 	};
 	private static final String[] _valid_operations_str = { "INVALID_OPCODE",
 			"REQUEST_PEER_FILES",
 			"PEER_FILE",
-			"PEER_FILES_ERROR"
+			"PEER_FILES_ERROR",
+			"REQUEST_PEER_DL",
+			"FILE_NOT_FOUND",
+			"FILE_AMBIGUOUS",
+			"PEER_DL"
 	};
 
 	private static Map<String, Byte> _operation_to_opcode;