added linked acount transactions

Author: rg911

src/model/transaction/AccountLinkTransaction.ts

@@ -0,0 +1,98 @@
+/*
+ * Copyright 2018 NEM
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { AccountLinkTransaction as AccountLinkTransactionLibrary, VerifiableTransaction } from 'nem2-library';
+import { Address } from '../account/Address';
+import { PublicAccount } from '../account/PublicAccount';
+import { NetworkType } from '../blockchain/NetworkType';
+import { Mosaic } from '../mosaic/Mosaic';
+import { UInt64 } from '../UInt64';
+import { Deadline } from './Deadline';
+import { LinkAction } from './LinkAction';
+import { Message } from './Message';
+import { Transaction } from './Transaction';
+import { TransactionInfo } from './TransactionInfo';
+import { TransactionType } from './TransactionType';
+import { TransactionVersion } from './TransactionVersion';
+
+/**
+ * Announce an AccountLinkTransaction to delegate the account importance to a proxy account.
+ * By doing so, you can enable delegated harvesting
+ */
+export class AccountLinkTransaction extends Transaction {
+    /**
+     * Create a link account transaction object
+     * @param deadline - The deadline to include the transaction.
+     * @param remoteAccountKey - The public key of the remote account.
+     * @param linkAction - The account link action.
+     * @returns {AccountLinkTransaction}
+     */
+    public static create(deadline: Deadline,
+                         remoteAccountKey: PublicAccount,
+                         linkAction: LinkAction,
+                         networkType: NetworkType): AccountLinkTransaction {
+        return new AccountLinkTransaction(networkType,
+            TransactionVersion.LINK_ACCOUNT,
+            deadline,
+            new UInt64([0, 0]),
+            remoteAccountKey,
+            linkAction);
+    }
+
+    /**
+     * @param networkType
+     * @param version
+     * @param deadline
+     * @param fee
+     * @param remoteAccountKey
+     * @param linkAction
+     * @param signature
+     * @param signer
+     * @param transactionInfo
+     */
+    constructor(networkType: NetworkType,
+                version: number,
+                deadline: Deadline,
+                fee: UInt64,
+                /**
+                 * The public key of the remote account.
+                 */
+                public readonly remoteAccountKey: PublicAccount,
+                /**
+                 * The account link action.
+                 */
+                public readonly linkAction: LinkAction,
+                signature?: string,
+                signer?: PublicAccount,
+                transactionInfo?: TransactionInfo) {
+        super(TransactionType.LINK_ACCOUNT, networkType, version, deadline, fee, signature, signer, transactionInfo);
+    }
+
+    /**
+     * @internal
+     * @returns {VerifiableTransaction}
+     */
+    protected buildTransaction(): VerifiableTransaction {
+        return new AccountLinkTransactionLibrary.Builder()
+            .addDeadline(this.deadline.toDTO())
+            .addFee(this.fee.toDTO())
+            .addVersion(this.versionToDTO())
+            .addRemoteAccountKey(this.remoteAccountKey.publicKey)
+            .addLinkAction(this.linkAction)
+            .build();
+    }
+
+}

src/model/transaction/LinkAction.ts

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2019 NEM
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export enum LinkAction {
+    Link = 0,
+    Unlink = 1,
+}

src/model/transaction/TransactionType.ts

@@ -107,4 +107,10 @@ export class TransactionType {
      * @type {number}
      */
     public static readonly MODIFY_ACCOUNT_PROPERTY_ENTITY_TYPE = 0x4350;
+
+    /**
+     * Link account transaction type
+     * @type {number}
+     */
+    public static readonly LINK_ACCOUNT = 0x414C;
 }

src/model/transaction/TransactionVersion.ts

@@ -115,4 +115,10 @@ export class TransactionVersion {
      * @type {number}
      */
     public static readonly MODIFY_ACCOUNT_PROPERTY_ENTITY_TYPE = 1;
+
+    /**
+     * Link account transaction version
+     * @type {number}
+     */
+    public static readonly LINK_ACCOUNT = 2;
 }