structure

client-network/src/lib.rs

@@ -0,0 +1,85 @@
+mod data;
+
+/// Messages sent to the Network thread by the GUI.
+pub enum NetworkCommand {
+    ConnectPeer(String), // e.g., IP:PORT
+    RequestFileTree(String), // e.g., peer_id
+    RequestDirectoryContent(String, String),
+    RequestChunk(String, String),
+    // ...
+}
+
+/// Messages sent to the GUI by the Network thread.
+pub enum NetworkEvent {
+    PeerConnected(String),
+    PeerListUpdated(Vec<String>),
+    FileTreeReceived(String, Vec<MerkleNode>), // peer_id, content
+    DataReceived(String, MerkleNode),
+    FileTreeRootReceived(String, String),
+
+    // ...
+}
+
+
+
+use crossbeam_channel::{Receiver, Sender};
+pub use crate::data::*;
+use sha2::{Digest, Sha256};
+
+pub fn calculate_chunk_id(data: &[u8]) -> String {
+    // 1. Create a new Sha256 hasher instance
+    let mut hasher = Sha256::new();
+
+    // 2. Write the input data into the hasher
+    hasher.update(data);
+
+    // 3. Finalize the hash computation and get the resulting bytes
+    let hash_bytes = hasher.finalize();
+
+    // 4. Convert the hash bytes (array of u8) into a hexadecimal string
+    // This is the common, human-readable format for cryptographic IDs.
+    hex::encode(hash_bytes)
+}
+
+
+
+pub fn start_p2p_executor(
+    cmd_rx: Receiver<NetworkCommand>,
+    event_tx: Sender<NetworkEvent>,
+) -> tokio::task::JoinHandle<()> {
+
+    // Use tokio to spawn the asynchronous networking logic
+    tokio::task::spawn(async move {
+
+        // P2P/Networking Setup goes here
+
+        println!("Network executor started.");
+
+        // Main network loop
+        loop {
+            // Check for commands from the GUI
+            if let Ok(cmd) = cmd_rx.try_recv() {
+                match cmd {
+                    NetworkCommand::ConnectPeer(addr) => {
+                        println!("Attempting to connect to: {}", addr);
+                        // Network logic to connect...
+                        // If successful, send an event back:
+                        // event_tx.send(NetworkEvent::PeerConnected(addr)).unwrap();
+                    },
+                    NetworkCommand::RequestFileTree(_) => todo!(),
+                    // ... handle other commands
+                    NetworkCommand::RequestDirectoryContent(_, _) => todo!(),
+                    NetworkCommand::RequestChunk(_, _) => todo!(),
+                }
+            }
+
+            // 2. Poll network for new events (e.g., an incoming connection)
+            // ...
+            // When a new peer is found:
+            // event_tx.send(NetworkEvent::PeerConnected("NewPeerID".to_string())).unwrap();
+
+            // Avoid spinning too fast
+            tokio::time::sleep(std::time::Duration::from_millis(50)).await;
+        }
+    })
+}