import type { TokenAmount } from '../../types/token.js';

export const filteredTokensComparator = (searchFilter: string) => {
  const isExactMatch = (token: TokenAmount) => {
    return (
      token.name?.toUpperCase() === searchFilter ||
      token.symbol.toUpperCase() === searchFilter ||
      token.address.toUpperCase() === searchFilter
    );
  };
  return (tokenA: TokenAmount, tokenB: TokenAmount) => {
    const isExactMatchA = isExactMatch(tokenA);
    const isExactMatchB = isExactMatch(tokenB);

    // Exact match with logo
    if (isExactMatchB && tokenB.logoURI) {
      return 1;
    }
    if (isExactMatchA && tokenA.logoURI) {
      return -1;
    }

    // Any token with a logo (exact match or not)
    if (tokenB.logoURI && !tokenA.logoURI) {
      return 1;
    }
    if (tokenA.logoURI && !tokenB.logoURI) {
      return -1;
    }

    // Exact match without logo
    if (isExactMatchB && !tokenB.logoURI) {
      return 1;
    }
    if (isExactMatchA && !tokenA.logoURI) {
      return -1;
    }

    // All other tokens are considered equal in sorting priority
    return 0;
  };
};