Address PR comments

src/handshake.ts

@@ -1,19 +1,43 @@
-import { bytes, bytes32 } from "./types/basic";
+import { bytes, bytes32 } from "./@types/basic";
 import { NoiseSession, XXHandshake } from "./xx";
-import { KeyPair } from "./types/libp2p";
+import { KeyPair, PeerId } from "./@types/libp2p";
+
+type handshakeType = "XX";
 
 export class Handshake {
-  static async runXX(
-    isInitiator: boolean,
+  private type: handshakeType;
+  private remotePublicKey: bytes;
+  private signedPayload: bytes;
+  private prologue: bytes32;
+  private staticKeys: KeyPair;
+
+  constructor(
+    type: handshakeType,
     remotePublicKey: bytes,
     prologue: bytes32,
     signedPayload: bytes,
     staticKeys: KeyPair,
-  ) : Promise<NoiseSession> {
+  ) {
+    this.type = type;
+    this.remotePublicKey = remotePublicKey;
+    this.signedPayload = signedPayload;
+    this.prologue = prologue;
+    this.staticKeys = staticKeys;
+  }
+
+  async propose(isInitiator: boolean) : Promise<NoiseSession> {
     const xx = new XXHandshake();
 
-    const nsInit = await xx.initSession(isInitiator, prologue, staticKeys, remotePublicKey);
+    const nsInit = await xx.initSession(isInitiator, this.prologue, this.staticKeys, this.remotePublicKey);
     // TODO: exchange handshake messages and confirm handshake
     return nsInit;
   }
+
+  async exchange() : Promise<NoiseSession> {
+
+  }
+
+  async finish() : Promise<NoiseSession> {
+
+  }
 }