luna/src/handlers/InteractionHandler.js

import Discord from 'discord.js';
import fs from 'fs';
import path from 'path';
import { pathToFileURL } from 'url';
import chalk from 'chalk';

const InteractionHandler = class {
  commands = {};

  async init(token) {
    try {
      this.rest = new Discord.REST({ version: '10' }).setToken(token);

      const commandsPath = path.resolve('src/commands');
      const folders = fs.readdirSync(commandsPath);
      for (const folder of folders) {
        const curPath = path.join(commandsPath, folder, 'index.js');

        await import(pathToFileURL(curPath).toString()).then(res => {
          this.commands[res.default.data.name] = { cmd: res.default.data.toJSON(), execute: res.default.execute };
        });

      }

      return this;
    } catch(err) {
      throw err;
    }
  }

  async handle(interaction, api) {
    if (!interaction.isCommand()) return;

    if (interaction.commandName in this.commands) {
      await this.commands[interaction.commandName].execute(interaction, api);
    }
  }

  async registerCommandsDev(clientId, devGuildId) {
    this.rest.put(Discord.Routes.applicationGuildCommands(clientId, devGuildId), {
      body: Object.values(this.commands).map(cmdObj => cmdObj.cmd)
    })
      .then(() => {
        console.log(`${chalk.green('Done:')} all commands are registered at the dev guild`);
      })
      .catch((err) => {
        console.log(`${chalk.red('Error:')} ${err}`);
      });
  }

  async unregisterCommandsDev(clientId, devGuildId) {
    this.rest.put(Discord.Routes.applicationGuildCommands(clientId, devGuildId), {
      body: []
    })
      .then(() => {
        console.log(`${chalk.green('Done:')} all commands are unregistered at the dev guild`);
      })
      .catch((err) => {
        console.log(`${chalk.red('Error:')} ${err}`);
      });
  }

  async unregisterCommandDev(clientId, devGuildId, commandId) {
    this.rest.delete(Discord.Routes.applicationGuildCommand(clientId, guildId, commandId))
      .then(() => {
        console.log(`${chalk.green('Done:')} command '${commandId}' has been unregistered at the dev guild`);
      })
      .catch((err) => {
        console.log(`${chalk.red('Error:')} ${err}`);
      });
  }

  async registerCommands(clientId) {
    this.rest.put(Discord.Routes.applicationCommands(clientId), {
      body: Object.values(this.commands).map(cmdObj => cmdObj.cmd)
    })
      .then(() => {
        console.log(`${chalk.green('Done:')} all commands are registered globally`);
      })
      .catch((err) => {
        console.log(`${chalk.red('Error:')} ${err}`);
      });
  }

  async unregisterCommands(clientId) {
    this.rest.put(Discord.Routes.applicationCommands(clientId), {
      body: []
    })
      .then(() => {
        console.log(`${chalk.green('Done:')} all commands are unregistered globally`);
      })
      .catch((err) => {
        console.log(`${chalk.red('Error:')} ${err}`);
      });
  }

  async unregisterCommand(clientId, commandId) {
    this.rest.delete(Discord.Routes.applicationCommand(clientId, commandId))
      .then(() => {
        console.log(`${chalk.green('Done:')} command '${commandId}' has been unregistered globally`);
      })
      .catch((err) => {
        console.log(`${chalk.red('Error:')} ${err}`);
      });
  }
};

export default InteractionHandler;