import { AutocompleteInteraction, PermissionsBitField } from "discord.js";
import { RESTPostAPIApplicationCommandsJSONBody } from "discord.js";
import { ApplicationCommandOption, ApplicationCommandType, ChatInputCommandInteraction, LocalizationMap, MessageInteraction, PermissionResolvable, UserSelectMenuInteraction } from "discord.js";

type InteractionTypeMap = {
  [ApplicationCommandType.ChatInput]: [ChatInputCommandInteraction, string];
  [ApplicationCommandType.Message]: [MessageInteraction, never];
  [ApplicationCommandType.User]: [UserSelectMenuInteraction, never];
};

interface Command<Type extends keyof InteractionTypeMap = ApplicationCommandType> {
  readonly name: string;
  readonly name_localizations?: LocalizationMap;
  readonly description: InteractionTypeMap[Type][1];
  readonly description_localizations?: LocalizationMap;
  readonly options?: ApplicationCommandOption[];
  readonly default_member_permissions?: PermissionResolvable;
  readonly type: Type;
  readonly nsfw?: boolean;
  readonly dm_permission?: boolean;
}

abstract class Command<Type extends keyof InteractionTypeMap = ApplicationCommandType> {
  abstract execute(interaction: InteractionTypeMap[Type][0]): Promise<void>;

  autocomplete?(interaction: Type extends ApplicationCommandType.ChatInput ? AutocompleteInteraction : never ): Promise<void>;

  toRESTPostApplicationCommands(): RESTPostAPIApplicationCommandsJSONBody {
    return {
      name: this.name,
      name_localizations: this.name_localizations,
      description: this.description,
      description_localizations: this.description_localizations,
      options: this.options,
      default_member_permissions: this.default_member_permissions !== undefined ? new PermissionsBitField(this.default_member_permissions).bitfield.toString() : undefined,
      type: this.type,
      nsfw: this.nsfw,
      dm_permission: this.dm_permission,
    };
  }
}

export default Command;