/**
 * MeoCord Framework
 * Copyright (C) 2025 Ukasyah Rahmatullah Zada
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
import 'reflect-metadata';
import { Message, MessageReaction, type OmitPartialGroupDMChannel, type PartialMessageReaction } from 'discord.js';
import { CommandType } from '../enum/index.js';
import { type ReactionHandlerOptions } from '../interface/index.js';
import { type CommandBuilderConstructor, type CommandInteractionType, type CommandMetadata } from '../interface/command-decorator.interface.js';
/**
 * Decorator to register message handlers in the controller.
 *
 * @param keyword - An optional keyword to filter messages this handler should respond to.
 *
 * @example
 * ```typescript
 * @MessageHandler('hello')
 * async handleHelloMessage(message: Message) {
 *   await message.reply('Hello! How can I help you?');
 * }
 *
 * @MessageHandler()
 * async handleAnyMessage(message: Message) {
 *   console.log(`Received a message: ${message.content}`);
 * }
 * ```
 */
export declare function MessageHandler<T extends OmitPartialGroupDMChannel<Message<boolean>>, R extends void | Promise<void>>(keyword?: string): (target: object, propertyKey: string, _descriptor: TypedPropertyDescriptor<(message: T) => R>) => void;
/**
 * Decorator to register reaction handlers in the controller.
 *
 * @param emoji - Optional emoji name to filter reactions this handler should respond to.
 *
 * @example
 * ```typescript
 * @ReactionHandler('👍')
 * async handleThumbsUpReaction(reaction: MessageReaction, { user }: ReactionHandlerOptions) {
 *   console.log(`User ${user.username} reacted with 👍`);
 * }
 *
 * @ReactionHandler()
 * async handleAnyReaction(reaction: MessageReaction, { user }: ReactionHandlerOptions) {
 *   console.log(`User ${user.username} reacted with ${reaction.emoji.name}`);
 * }
 * ```
 */
export declare function ReactionHandler<T extends MessageReaction | PartialMessageReaction, R extends void | Promise<void>>(emoji?: string): (target: object, propertyKey: string, _descriptor: TypedPropertyDescriptor<(reaction: T, options: ReactionHandlerOptions) => R> | TypedPropertyDescriptor<(reaction: T) => R>) => void;
/**
 * Retrieves reaction handlers metadata from a given controller.
 *
 * @param controller - The controller class instance.
 * @returns An array of reaction handler metadata objects.
 */
export declare function getReactionHandlers(controller: any): {
    emoji: string | undefined;
    method: string;
}[];
/**
 * Retrieves message handlers metadata from a given controller.
 *
 * @param controller - The controller class instance.
 * @returns An array of message handler method names.
 */
export declare function getMessageHandlers(controller: any): {
    keyword: string | undefined;
    method: string;
}[];
/**
 * Decorator to register command methods in a controller.
 *
 * @param commandName - The name or pattern of the command.
 * @param builderOrType - A command builder class or a command type from `CommandType`.
 *
 * @example
 * ```typescript
 * @Command('help', CommandType.SLASH)
 * public async handleHelp(interaction: ChatInputCommandInteraction) {
 *   await interaction.reply('This is the help command!')
 * }
 *
 * @Command('stats-{id}', CommandType.BUTTON)
 * public async handleStats(message: ButtonInteraction, { id }) {
 *   await message.reply(`Fetching stats for ID: ${id}`);
 * }
 * ```
 */
export declare function Command<CBC extends CommandType.SLASH | CommandType.CONTEXT_MENU, T extends CommandBuilderConstructor<CBC> | CommandType>(commandName: string, builderOrType: T): <P extends Record<string, any>, R extends Promise<void> | void>(target: object, propertyKey: string, _descriptor: TypedPropertyDescriptor<(interaction: CommandInteractionType<CBC, T>, params: P) => R> | TypedPropertyDescriptor<(interaction: CommandInteractionType<CBC, T>) => R>) => void;
/**
 * Retrieves the command map for a given controller.
 *
 * @param controller - The controller class instance.
 * @returns A record containing command metadata indexed by command names.
 */
export declare function getCommandMap<T extends string>(controller: any): Record<string, CommandMetadata<T>[]>;
/**
 * Decorator to mark a class as a controller that can later be registered to the App class `(app.ts)` using the `@MeoCord` decorator.
 *
 * @example
 * ```typescript
 * @Controller()
 * export class PingSlashController {
 *   constructor(private pingService: PingService) {}
 *
 *   @Command('ping', PingCommandBuilder)
 *   async ping(interaction: ChatInputCommandInteraction) {
 *     const response = await this.pingService.handlePing()
 *     await interaction.reply(response)
 *   }
 * }
 * ```
 */
export declare function Controller(): (target: any) => void;