made some methods public. Added a new createSignature method on the w…

…allet class.

src/trxTypes/BaseTx.ts

@@ -18,6 +18,7 @@ export interface ITransaction<AssetType = {}> {
   id: string;
   signature: string;
   signSignature?: string;
+  signatures?: string[];
 }
 
 /**
@@ -219,17 +220,14 @@ export abstract class BaseTx<T = {}> {
    * @param {string} privKey
    * @returns {Buffer}
    */
-  protected createSignature(privKey: string) {
+  public createSignature(privKey: string) {
     const hash = this.getHash();
     return sodium.crypto_sign_detached(
       hash,
       new Buffer(privKey, 'hex'));
   }
 
   get signature() {
-    if (empty(this._signature)) {
-      throw new Error('Call create first');
-    }
     return this._signature;
   }
 
@@ -294,7 +292,7 @@ export abstract class BaseTx<T = {}> {
    * Calculates Tx id!
    * @returns {string}
    */
-  protected calcId(): string {
+  public calcId(): string {
     const hash = this.getHash();
     const temp = new Buffer(8);
     for (let i = 0; i < 8; i++) {

src/wallet.ts

@@ -45,6 +45,7 @@ export abstract class GenericWallet {
     }
     return true;
   }
+
   // tslint:disable variable-name
   protected _privKey: string;
   protected _publicKey: string;
@@ -72,11 +73,32 @@ export abstract class GenericWallet {
    */
   public signTransaction<T>(tx: ITransaction<T> | BaseTx<T>, coSign?: GenericWallet): ITransaction<T> {
     if (!(tx instanceof BaseTx)) {
-      tx = createTransactionFromOBJ<T>(tx);
+      tx = createTransactionFromOBJ<any>(tx);
+    }
+    tx.signature = this.getSignatureOfTransaction(tx);
+    if (coSign) {
+      tx.signSignature = coSign.getSignatureOfTransaction(tx);
+      tx.id            = tx.calcId();
+    }
+    return tx.toObj();
+  }
+
+  /**
+   * Returns signature of provided transaction without modifiying the original tx.
+   * @return {string} signature buffer.
+   */
+  public getSignatureOfTransaction(tx: ITransaction<any> | BaseTx<any>): string {
+    if (!(tx instanceof BaseTx)) {
+      tx = createTransactionFromOBJ<any>(tx);
     }
     tx.addressSuffixLength = this.addressOptions.suffixLength;
+    if (!tx.signature) {
+      const signedTx = tx.sign(this);
+      return signedTx.signature;
+    }
     return tx
-      .sign(this, coSign ? coSign.privKey : undefined);
+      .createSignature(this.privKey)
+      .toString('hex');
   }
 
   /**

test/genericwallet.spec.ts

@@ -148,4 +148,8 @@ describe('genericwallet', () => {
     });
 
   });
+
+  describe('getSignatureOfTransaction', () => {
+
+  })
 });