Bring back code to persist iroh secret

src/peer_channels.rs

@@ -9,6 +9,7 @@ use iroh_net::magic_endpoint::accept_conn;
 use iroh_net::NodeId;
 use iroh_net::{derp::DerpMode, key::SecretKey, MagicEndpoint};
 
+use crate::config::Config;
 use crate::contact::ContactId;
 use crate::context::Context;
 use crate::message::{Message, MsgId};
@@ -18,7 +19,7 @@ use crate::webxdc::StatusUpdateItem;
 impl Context {
     /// Create magic endpoint and gossip for the context.
     pub async fn create_gossip(&self) -> Result<()> {
-        let secret_key: SecretKey = self.generate_iroh_keypair();
+        let secret_key: SecretKey = self.get_or_generate_iroh_keypair().await?;
         println!("> our secret key: {}", base32::fmt(secret_key.to_bytes()));
 
         if self.endpoint.lock().await.is_some() {
@@ -145,9 +146,17 @@ impl Context {
         Ok(())
     }
 
-    /// Get the iroh gossip secret key from the database or create one.
+    /// Get the iroh gossip secret key from the database or generate a new one and persist it.
-    pub fn generate_iroh_keypair(&self) -> SecretKey {
+    pub async fn get_or_generate_iroh_keypair(&self) -> Result<SecretKey> {
-        SecretKey::generate()
+        match self.get_config_parsed(Config::IrohSecretKey).await? {
+            Some(key) => Ok(key),
+            None => {
+                let key = SecretKey::generate();
+                self.set_config(Config::IrohSecretKey, Some(&key.to_string()))
+                    .await?;
+                Ok(key)
+            }
+        }
     }
 }