// Importing the required types for fetch

import { RequestInit, Response } from 'node-fetch';

// Defining the resource type as per the instructions

type DiscordBotConfiguration = {

  public_key: string,

  application_id: string

};

// The main function to fetch the last message sent to a Discord channel

export async function main(discordBotConfiguration: DiscordBotConfiguration, channel_id: string): Promise<any> {

  // Constructing the URL to fetch the last message from a Discord channel

  // Note: The channel ID needs to be known beforehand and is hardcoded here for demonstration.

  // Replace 'YOUR_CHANNEL_ID' with the actual channel ID.

  const url = `https://discord.com/api/v9/channels/${channel_id}/messages?limit=1`;

  // Preparing the request options, including the authorization header

  const requestOptions: RequestInit = {

    method: 'GET',

    headers: {

      'Authorization': `Bot ${discordBotConfiguration.public_key}`,

      'Content-Type': 'application/json'

    }

  };

  // Performing the fetch request to get the last message

  try {

    const response: Response = await fetch(url, requestOptions);

    if (!response.ok) {

      throw new Error(`Failed to fetch messages: ${response.statusText}`);

    }

    const messages = await response.json();

    // Assuming the response is an array of messages, return the first one which is the latest

    return messages.length > 0 ? messages[0] : null;

  } catch (error) {

    console.error('Error fetching the last message:', error);

    throw error;

  }

}