[PFT-848] Replace FS functions with sdk config for private key

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@parifi/sdk",
-  "version": "0.1.16",
+  "version": "0.1.18",
   "description": "Parifi SDK with common utility functions",
   "files": [
     "dist",

src/relayers/pimlico/index.ts

@@ -2,12 +2,13 @@ import 'dotenv/config';
 import { RelayerConfig, RpcConfig, SubgraphConfig } from '../../interfaces';
 import { executeTxUsingPimlico, getPimlicoSmartAccountClient } from './utils';
 import { SmartAccount } from 'permissionless/accounts';
-import { Chain, Transport } from 'viem';
+import { Chain, Hex, Transport } from 'viem';
 import { EntryPoint } from 'permissionless/types/entrypoint';
 import { SmartAccountClient } from 'permissionless';
 import { getBatchLiquidateTxData, getBatchSettleTxData, getParifiUtilsInstance } from '../../core/parifi-utils';
 import { getPublicSubgraphEndpoint } from '../../subgraph';
 import { getPythClient } from '../../pyth/pyth';
+import { generatePrivateKey } from 'viem/accounts';
 
 import { contracts as parifiContracts } from '@parifi/references';
 
@@ -39,7 +40,16 @@ export class Pimlico {
       return;
     }
 
-    this.smartAccountClient = await getPimlicoSmartAccountClient(this.pimlicoConfig, this.rpcConfig);
+    /// Create Smart account for user address EOA
+    const privateKey =
+      ((process.env.PRIVATE_KEY as Hex) || this.pimlicoConfig.password) ??
+      (() => {
+        const pk = generatePrivateKey();
+        this.pimlicoConfig.password = pk;
+        return pk;
+      })();
+
+    this.smartAccountClient = await getPimlicoSmartAccountClient(this.pimlicoConfig, this.rpcConfig, privateKey);
 
     // Set the Pimlico Relayer as initialized
     this.isInitialized = true;

src/relayers/pimlico/utils.ts

@@ -8,14 +8,13 @@ import { Chain, Hex, Transport, createPublicClient, http } from 'viem';
 
 import { createPimlicoBundlerClient, createPimlicoPaymasterClient } from 'permissionless/clients/pimlico';
 
-import { generatePrivateKey } from 'viem/accounts';
-
 import { EntryPoint } from 'permissionless/types/entrypoint';
 import { FACTORY_ADDRESS_SIMPLE_ACCOUNT } from '../../common';
 
 export const getPimlicoSmartAccountClient = async (
   pimlicoConfig: RelayerI,
   rpcConfig: RpcConfig,
+  privateKey: `0x${string}`,
 ): Promise<SmartAccountClient<EntryPoint, Transport, Chain, SmartAccount<EntryPoint>>> => {
   const apiKey = pimlicoConfig.apiKey ?? '';
   const viemChain = getViemChainById(rpcConfig.chainId as number);
@@ -32,15 +31,6 @@ export const getPimlicoSmartAccountClient = async (
     entryPoint: ENTRYPOINT_ADDRESS_V07,
   });
 
-  /// Create Smart account for user address EOA
-  const privateKey =
-    (process.env.PRIVATE_KEY as Hex) ??
-    (() => {
-      const pk = generatePrivateKey();
-      appendFileSync('.env', `PRIVATE_KEY=${pk}`);
-      return pk;
-    })();
-
   const account = await privateKeyToSimpleSmartAccount(publicClient, {
     privateKey,
     entryPoint: ENTRYPOINT_ADDRESS_V07,