make getFeeTokens independent of chain session manager and initialize state (#890)

* make getFeeTokens independent of chain session manager and initialized state

* remove getFeeTokens from chain session manager

Author: VGabriel45

packages/wallet/dapp-client/src/ChainSessionManager.ts

@@ -781,19 +781,6 @@ export class ChainSessionManager {
     }
   }
 
-  /**
-   * Fetches fee tokens for a chain.
-   * @returns {GetFeeTokensResponse}
-   * @throws {FeeOptionError} If fetching fee tokens fails.
-   */
-  async getFeeTokens(): Promise<GetFeeTokensResponse> {
-    try {
-      return await this.relayer.feeTokens()
-    } catch (err) {
-      throw new FeeOptionError(`Failed to get fee tokens: ${err instanceof Error ? err.message : String(err)}`)
-    }
-  }
-
   /**
    * Builds, signs, and sends a batch of transactions.
    * @param transactions The transactions to be sent.

packages/wallet/dapp-client/src/DappClient.ts

@@ -31,6 +31,7 @@ import {
 } from './types/index.js'
 import { TypedData } from 'ox/TypedData'
 import { KEYMACHINE_URL, NODES_URL, RELAYER_URL } from './utils/constants.js'
+import { getRelayerUrl, getRpcUrl } from './utils/index.js'
 
 export type DappClientEventListener = (data?: any) => void
 
@@ -568,11 +569,12 @@ export class DappClient {
    * @throws If the fee tokens cannot be fetched. {@link InitializationError}
    */
   async getFeeTokens(chainId: number): Promise<GetFeeTokensResponse> {
-    if (!this.isInitialized) throw new InitializationError('Not initialized')
-    const chainSessionManager = this.getChainSessionManager(chainId)
-    if (!chainSessionManager.isInitialized)
-      throw new InitializationError(`ChainSessionManager for chain ${chainId} is not initialized.`)
-    return await chainSessionManager.getFeeTokens()
+    const relayer = new Relayer.Standard.Rpc.RpcRelayer(
+      getRelayerUrl(chainId, this.relayerUrl),
+      chainId,
+      getRpcUrl(chainId, this.nodesUrl, this.projectAccessKey),
+    )
+    return await relayer.feeTokens()
   }
 
   /**

packages/wallet/dapp-client/src/index.ts

@@ -20,6 +20,7 @@ export type {
   SendWalletTransactionPayload,
   SendWalletTransactionResponse,
   WalletActionResponse,
+  GetFeeTokensResponse,
 } from './types/index.js'
 export { RequestActionType, TransportMode } from './types/index.js'
 export {