feat: Add stake migration tx (#408)

* feat: Add stake migration tx

* update msg

* v1.0.2

* Fix the order of message structure

Author: robot-ux

docs/api-docs/classes/bncclient.md

@@ -332,7 +332,7 @@ get open orders for an address
 
 Name | Type | Default | Description |
 ------ | ------ | ------ | ------ |
-`address` | string | this.address! | binance address |
+`address` | string | this.address! | bnb address |
 
 **Returns:** *Promise‹object | never[]›*
 
@@ -465,7 +465,7 @@ Name | Type | Default | Description |
 
 **Returns:** *Promise‹object | never[]›*
 
-resolves with http response ([more details](https://docs.bnbchain.org/docs/beaconchain/develop/api-reference/dex-api/block-service/#apiv1txs))
+resolves with http response ([more details](https://docs.binance.org/api-reference/dex-api/block-service.html#apiv1txs))
 ```js
 // Example:
 const client = new BncClient('https://testnet-api.binance.org')

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@bnb-chain/javascript-sdk",
-  "version": "0.0.0-development",
+  "version": "1.0.2",
   "license": "Apache-2.0",
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",

src/types/msg/stake/index.ts

@@ -1,3 +1,4 @@
 export * from "./bscDelegateMsg"
 export * from "./bscUndelegateMsg"
 export * from "./bscRedelegateMsg"
+export * from "./stakeMigrationMsg"

src/types/msg/stake/stakeMigrationMsg.ts

@@ -0,0 +1,89 @@
+import { BaseMsg, Msg, SignMsg, Coin } from ".."
+import * as crypto from "../../../crypto"
+import { AminoPrefix } from "../../tx"
+
+export interface SignedStakeMigrationMsg extends SignMsg {
+  delegator_addr: string
+  validator_src_addr: string
+  validator_dst_addr: string
+  refund_addr: string
+  amount: Coin
+}
+
+export interface StakeMigrationData extends Msg {
+  validator_src_addr: Buffer
+  validator_dst_addr: Buffer
+  delegator_addr: Buffer
+  refund_addr: Buffer
+  amount: Coin
+  aminoPrefix: AminoPrefix
+}
+
+export class StakeMigrationMsg extends BaseMsg {
+  private delegator_addr: string
+  private validator_src_addr: string
+  private validator_dst_addr: string
+  private refund_addr: string
+  private amount: Coin
+
+  constructor({
+    delegator_addr,
+    validator_src_addr,
+    validator_dst_addr,
+    amount,
+    refund_addr,
+  }: {
+    delegator_addr: string
+    validator_src_addr: string
+    validator_dst_addr: string
+    amount: Coin
+    refund_addr: string
+  }) {
+    super()
+    this.delegator_addr = delegator_addr
+    this.validator_src_addr = validator_src_addr
+    this.validator_dst_addr = validator_dst_addr
+    this.amount = amount
+    this.refund_addr = refund_addr
+  }
+
+  getSignMsg() {
+    const { denom, amount } = this.amount
+    const signMsg: SignedStakeMigrationMsg = {
+      validator_src_addr: this.validator_src_addr,
+      validator_dst_addr: this.validator_dst_addr,
+      delegator_addr: this.delegator_addr,
+      refund_addr: this.refund_addr,
+      amount: { denom, amount: String(amount) },
+    }
+
+    return {
+      type: "cosmos-sdk/MsgSideChainStakeMigration",
+      value: signMsg,
+    }
+  }
+
+  getMsg() {
+    const data: StakeMigrationData = {
+      validator_src_addr: crypto.decodeAddress(this.validator_src_addr),
+      validator_dst_addr: Buffer.from(this.validator_dst_addr.slice(2), "hex"),
+      delegator_addr: Buffer.from(this.delegator_addr.slice(2), "hex"),
+      refund_addr: crypto.decodeAddress(this.refund_addr),
+      amount: this.amount,
+      aminoPrefix: AminoPrefix.MsgSideChainStakeMigration,
+    }
+
+    return data
+  }
+
+  static defaultMsg() {
+    return {
+      validator_src_addr: Buffer.from(""),
+      validator_dst_addr: Buffer.from(""),
+      delegator_addr: Buffer.from(""),
+      refund_addr: Buffer.from(""),
+      amount: [{ denom: "", amount: 0 }],
+      aminoPrefix: AminoPrefix.MsgSideChainStakeMigration,
+    }
+  }
+}

src/types/tx/stdTx.ts

@@ -65,6 +65,7 @@ export enum AminoPrefix {
   MsgSideChainDelegate = "E3A07FD2",
   MsgSideChainRedelegate = "E3CED364",
   MsgSideChainUndelegate = "514F7E0E",
+  MsgSideChainStakeMigration = "38589196",
   Claim = "4E781C11",
   ClaimMsg = "175A0521",
   BindMsg = "B9AE640C",