import { concat, keccak256, pad, toHex } from "viem";

import { BYTES32_LENGTH, UINT16_LENGTH } from "../constants/bytes.js";

import { convertNumberToBytes } from "./bytes.js";

import type { GenericAddress } from "../types/address.js";
import type { FolksChainId } from "../types/chain.js";
import type { AccountId, LoanId, LoanName, Nonce } from "../types/lending.js";

export function isAccountId(accountId: AccountId): boolean {
  return accountId.length === 64 + 2;
}

export function buildAccountId(addr: GenericAddress, chainId: FolksChainId, nonce: Nonce): AccountId {
  return keccak256(concat([addr, convertNumberToBytes(chainId, UINT16_LENGTH), nonce])) as AccountId;
}

export function buildLoanId(accountId: AccountId, nonce: Nonce): LoanId {
  return keccak256(concat([accountId, nonce])) as LoanId;
}

export function convertStringToLoanName(name: string): LoanName {
  return pad(toHex(name), { size: BYTES32_LENGTH }) as LoanName;
}