feat: Move utils from CredentialService [DEV-3051] (#235)

* Move utils from CredentialService

* Add tests

* Rename kid to publicKeyHex

* Review comments

package.json

@@ -61,11 +61,13 @@
     "@cosmjs/tendermint-rpc": "^0.31.0",
     "@cosmjs/utils": "^0.31.0",
     "@stablelib/ed25519": "^1.0.3",
+    "@types/secp256k1": "^4.0.3",
     "cosmjs-types": "^0.8.0",
     "did-jwt": "^7.2.4",
     "did-resolver": "^4.1.0",
     "file-type": "^18.5.0",
     "multiformats": "^12.0.1",
+    "secp256k1": "^5.0.0",
     "uuid": "^9.0.0"
   },
   "devDependencies": {

src/utils.ts

@@ -27,6 +27,8 @@ import {
 } from '@stablelib/ed25519'
 import { DirectSecp256k1HdWallet, DirectSecp256k1Wallet } from '@cosmjs/proto-signing'
 import { EnglishMnemonic as _, sha256 } from '@cosmjs/crypto'
+import { rawSecp256k1PubkeyToRawAddress } from '@cosmjs/amino'
+import pkg from 'secp256k1'
 import { v4 } from 'uuid'
 import {
     VerificationMethod as ProtoVerificationMethod,
@@ -36,6 +38,9 @@ import {
 } from "@cheqd/ts-proto/cheqd/did/v2/index.js"
 import { DIDModule } from "./modules/did.js"
 import { MsgCreateResourcePayload } from "@cheqd/ts-proto/cheqd/resource/v2/index.js"
+import { toBech32 } from "@cosmjs/encoding"
+import { StargateClient } from "@cosmjs/stargate"
+import { Coin } from "cosmjs-types/cosmos/base/v1beta1/coin"
 
 export type TImportableEd25519Key = {
     publicKeyHex: string
@@ -295,4 +300,14 @@ export function createMsgResourcePayloadToSign(payload: Partial<MsgCreateResourc
   return MsgCreateResourcePayload.encode(
     MsgCreateResourcePayload.fromPartial(payload)
   ).finish()
+}
+
+export function getCosmosAccount(publicKeyHex: string): string {
+    const { publicKeyConvert } = pkg
+    return toBech32('cheqd', rawSecp256k1PubkeyToRawAddress(publicKeyConvert(fromString(publicKeyHex, 'hex'), true)))
+}
+
+export async function checkBalance(address: string, rpcAddress: string): Promise<readonly Coin[]> {
+    const client = await StargateClient.connect(rpcAddress)
+    return await client.getAllBalances(address)
 }

tests/testutils.test.ts

@@ -19,6 +19,15 @@ export const image_content = 'iVBORw0KGgoAAAANSUhEUgAAAQAAAAEAAQMAAABmvDolAAAAA1
 
 export const default_content = '<p>Test file content</p>'
 
+// They are connected 
+export const pubkey_hex = "04adf6cad45e58a7e1908bebefcc358de229c108fb1170566f83be5ce028eb6b1997711067ffcb445532667ed4a4efc2b334c16421edb52ec5e0324a1c0e570663"
+
+export const bech32_account = "cheqd1ehcg0jarxkyxtkzrwcxayedxrskwyftxj4exm9"
+// Testnet RPC and faucet address
+export const faucet_address = "cheqd1rnr5jrt4exl0samwj0yegv99jeskl0hsxmcz96"
+
+export const testnet_rpc = "https://rpc.cheqd.network:443"
+
 export function containsAll<T>(array: T[], values: T[]): boolean {
     return values.every(value => array.includes(value))
 }

tests/utils.test.ts

@@ -1,6 +1,8 @@
 import {
     TImportableEd25519Key,
-    createSignInputsFromImportableEd25519Key
+    checkBalance,
+    createSignInputsFromImportableEd25519Key,
+    getCosmosAccount
 } from '../src/utils'
 import {
     createDidVerificationMethod,
@@ -13,6 +15,7 @@ import {
     MethodSpecificIdAlgo,
     VerificationMethods
 } from '../src/types'
+import { faucet_address, pubkey_hex, testnet_rpc } from './testutils.test'
 
 describe('createSignInputsFromImportableEd25519Key', () => {
     it('should create a sign input from an importable ed25519 key 2020', async () => {
@@ -74,4 +77,19 @@ describe('createSignInputsFromImportableEd25519Key', () => {
 
         expect(signInput).toEqual({ verificationMethodId: verificationKeys.keyId, privateKeyHex: importableEd25519Key.privateKeyHex })
     })
+
+    it('should get the cosmos account from publicKeyHex', () => {
+        // We know, that such point could be transformed to a cheqd account cheqd1ehcg0jarxkyxtkzrwcxayedxrskwyftxj4exm9
+        const expectedAddress = "cheqd1ehcg0jarxkyxtkzrwcxayedxrskwyftxj4exm9"
+
+        expect(expectedAddress).toEqual(getCosmosAccount(pubkey_hex))
+
+    })
+
+    it('should return not empty account balance', async () => {
+        const balances = await checkBalance(faucet_address, testnet_rpc)
+        expect(balances.length).toBeGreaterThan(0)
+        expect(balances[0].denom).toEqual("ncheq")
+        expect(+balances[0].amount).toBeGreaterThan(0)
+    })
 })