Fetching Approval Amount

The getApprovalAmount method fetches the current approval amount of tokens that the user has allowed for a particular contract (such as the insurance pool). This is useful for checking how much a user has approved for spending on the token contract.

Before proceeding, users need to follow these steps:

1. Pass WalletClient instance: Refer to the Pass WalletClient Instance for selecting the appropriate walletClient instance based on authentication.

Usage

import kohin from "./kohinInstance";

const approvalAmount = await kohin.getApprovalAmount({
  walletClient: walletClient, // Refer to Pass WalletClient Instance section for appropriate usage
});

if (approvalAmount.success) {
  console.log("Approval Amount:", approvalAmount.allowance);
} else {
  console.error("Error fetching approval amount:", approvalAmount.error);
}

Return Value

The getApprovalAmount method returns an object with the following structure:

{
  success: boolean;               // Indicates if the operation was successful
  error?: string;                 // Error message if the operation failed
  allowance?: number;             // The amount of tokens approved for the contract
}

Error Handling

Here's how you can handle errors while fetching the approval amount:

try {
  const res = await kohin.getApprovalAmount();

  if (res.success) {
    console.log("Approval Amount:", res.allowance);
  } else {
    console.error("Error fetching approval amount:", res.error);
  }
} catch (error: any) {
  console.error("Unexpected error while fetching approval amount:", error);
}

Example Response

Success Response:

{
  "success": true,
  "allowance": 5000
}

Error Response:

{
  "success": false,
  "error": "Unable to fetch approval amount."
}