add signTransactions method

src/AuthProviders/ExtensionProvider.ts

@@ -61,10 +61,14 @@ export class ExtensionProvider implements IAuthProvider {
     return result;
   }
 
-  signTransaction(tx: Transaction): Promise<CoreTransaction | null> {
+  signTransaction(tx: Transaction): Promise<Transaction | null> {
     return this.provider.signTransaction(tx as CoreTransaction);
   }
 
+  signTransactions(transactions: Transaction[]): Promise<Transaction[]> {
+    return this.provider.signTransactions(transactions);
+  }
+
   getSignature() {
     if (this.provider.account.signature !== undefined) {
       return this.provider.account.signature;

src/AuthProviders/LedgerProvider.ts

@@ -95,6 +95,10 @@ export class LedgerProvider implements IAuthProvider {
     return this.provider.signTransaction(tx);
   }
 
+  signTransactions(transactions: Transaction[]): Promise<Transaction[]> {
+    return this.provider.signTransactions(transactions);
+  }
+
   getSignature() {
     return this.signature;
   }

src/AuthProviders/PemProvider.ts

@@ -56,6 +56,17 @@ export class PemProvider implements IAuthProvider {
     return tx;
   }
 
+  async signTransactions(transactions: Transaction[]): Promise<Transaction[]> {
+    const signedTransactions: Transaction[] = [];
+    for (const tx of transactions) {
+      const signedTx = await this.signTransaction(tx);
+      if (!signedTx) {throw new Error("Failed to sign transaction");}
+      signedTransactions.push(signedTx);
+    }
+
+    return signedTransactions;
+  }
+
   getSignature() {
     return null;
   }

src/AuthProviders/WalletConnectProvider.ts

@@ -53,6 +53,10 @@ export class WalletConnectProvider implements IAuthProvider {
         return this.provider.signTransaction(tx as Transaction);
     }
 
+    signTransactions(transactions: Transaction[]): Promise<Transaction[]> {
+        return this.provider.signTransactions(transactions);
+    }
+
     getType(): AuthProviderType {
         return AuthProviderType.WALLET_CONNECT;
     }

src/AuthProviders/WebProvider.ts

@@ -77,6 +77,14 @@ export class WebProvider implements IAuthProvider {
     return null;
   }
 
+  async signTransactions(transactions: Transaction[]): Promise<Transaction[]> {
+    await this.provider.signTransactions(transactions as CoreTransaction[], {
+      callbackUrl: this.connectionOptions.transactionRedirectUrl,
+    });
+
+    return [];
+  }
+
   getAddress(): string | null {
     return this.address;
   }

src/AuthProviders/WebviewProvider.ts

@@ -164,4 +164,4 @@ export class WebviewProvider implements IAuthProvider {
         };
     }
 
-};
+}

src/types/index.ts

@@ -42,6 +42,9 @@ export interface IAuthProvider {
 
   signTransaction(tx: Transaction): Promise<Transaction | null>;
 
+  signTransactions(transactions: Transaction[]): Promise<Transaction[]>;
+
+
   getType(): AuthProviderType;
 
   toJson(): IAuthState;