app/tools/coin.ts

import { Tool } from 'openai-function-calling-tools';
import { z } from 'zod';

function createCoinMarketCapApi({ apiKey }: { apiKey: string }) {
  const paramsSchema = z.object({
    input: z.string(), // Assuming this is used to pass query parameters, though you might want to define these more specifically
  });
  const name = 'coinmarketcap';
  const description = 'A realtime cryptocurrency API. Useful for when you need to answer questions about latest crypto';

  const execute = async ({ input }: z.infer<typeof paramsSchema>) => {
    try {
        // Parse the input to get parameters, or define them directly if not using 'input' for this
        // For demonstration, I'm using static parameters that you might want to customize
        const queryParams = new URLSearchParams({
          start: '1',
          limit: '20',
          convert: 'USD'
        });
        
        const response = await fetch(`https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest?${queryParams}`, {
          method: 'GET', // Method is GET by default for fetch, specified here for clarity
          headers: {
            'X-CMC_PRO_API_KEY': apiKey, // Use the passed apiKey for authentication
            'Accept': 'application/json',
          },
        });

        if (!response.ok) {
          throw new Error('Network response was not ok');
        }

        const data = await response.json();
        return JSON.stringify(data);
    } catch (error) {
      throw new Error(`Error in coinMarketCapApi: ${error}`);
    }
  };

  return new Tool(paramsSchema, name, description, execute).tool;
}

export { createCoinMarketCapApi };