import { Client as DJSClient } from '@projectdysnomia/dysnomia';
import kv, { asyncKV } from '@star-kitten/util/kv.js';
import type { KVStore } from './kv-store.type.ts.ts';
import type { Cache } from './cache.type.ts';
import { registerCommands } from '../commands/handle-commands.ts';
import type { Client } from './client.ts';

export interface DiscordBotOptions {
  token?: string;
  intents?: number[];
  commandKey?: string;
  keyStore?: KVStore;
  cache?: Cache;
  onError?: (error: Error) => void;
  onReady?: () => void;
}

export function startBot({
  token = process.env.DISCORD_BOT_TOKEN || '',
  intents = [],
  commandKey = 'default',
  keyStore = asyncKV,
  cache = kv,
  onError,
  onReady,
}: DiscordBotOptions = {}): Client {
  const client = new DJSClient(`Bot ${token}`, {
    gateway: {
      intents,
    },
  }) as Client;
  client.commandKey = commandKey;

  client.on('ready', async () => {
    console.debug(`Logged in as ${client.user?.username}#${client.user?.discriminator}`);
    onReady?.();
    await registerCommands({ client, cache, kv: keyStore });
    console.debug('Bot is ready and command handling is initialized.');
  });

  client.on('error', (error) => {
    console.error('An error occurred:', error);
    onError?.(error);
  });

  client.connect().catch(console.error);

  return client;
}