import { Client } from 'discord.js';
import express from 'express';

export interface Plugin {
  name: string;
  version: string;
  description: string;

  /** Called once when plugin is loaded */
  init(ctx: PluginContext): Promise<void>;

  /** Called when Discord client is ready */
  onReady?(ctx: PluginContext): Promise<void>;

  /** Called to register Express routes */
  registerRoutes?(app: express.Application, ctx: PluginContext): void;

  /** Called to build SSE snapshot data for new clients */
  getSnapshot?(ctx: PluginContext): Record<string, any>;

  /** Called on graceful shutdown */
  destroy?(ctx: PluginContext): Promise<void>;
}

export interface PluginContext {
  client: Client;
  dataDir: string;
  adminPwd: string;
  allowedGuildIds: string[];
}

const loadedPlugins: Plugin[] = [];

export function registerPlugin(plugin: Plugin): void {
  loadedPlugins.push(plugin);
  console.log(`[Plugin] Registered: ${plugin.name} v${plugin.version}`);
}

export function getPlugins(): Plugin[] {
  return [...loadedPlugins];
}