require('dotenv').config({ path: '../backend/.env' });
const { REST, Routes } = require('discord.js');
const fs = require('fs');
const path = require('path');

const commands = [];
const commandsPath = path.join(__dirname, 'commands');
const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));

for (const file of commandFiles) {
    const filePath = path.join(commandsPath, file);
    const command = require(filePath);
    if (command.enabled === false || command.dev === true) continue;

  if (command.builder) {
    try {
      // Some command modules export builder as a function (builder => builder...) or as an instance
      if (typeof command.builder === 'function') {
        // create a temporary SlashCommandBuilder by requiring it from discord.js
        const { SlashCommandBuilder } = require('discord.js');
        const built = command.builder(new SlashCommandBuilder());
        if (built && typeof built.toJSON === 'function') commands.push(built.toJSON());
        else commands.push({ name: command.name, description: command.description });
      } else if (command.builder && typeof command.builder.toJSON === 'function') {
        commands.push(command.builder.toJSON());
      } else {
        commands.push({ name: command.name, description: command.description });
      }
    } catch (e) {
      console.warn(`Failed to build command ${command.name}:`, e && e.message ? e.message : e);
      commands.push({ name: command.name, description: command.description });
    }
  } else {
    commands.push({ name: command.name, description: command.description });
  }
}

const rest = new REST({ version: '10' }).setToken(process.env.DISCORD_BOT_TOKEN);

const deployCommands = async (guildId) => {
  try {
    // Minimal logging: indicate a refresh is happening (no per-guild spam)
    console.log('🔁 Refreshing application commands...');

    await rest.put(
      Routes.applicationGuildCommands(process.env.DISCORD_CLIENT_ID, guildId),
      { body: commands },
    );

    console.log(`✅ Reloaded application commands (${commands.length} commands)`);
  } catch (error) {
    console.error('Failed to deploy commands:', error && error.message ? error.message : error);
  }
};

// Standalone execution
if (require.main === module) {
  const { Client, GatewayIntentBits } = require('discord.js');
  const client = new Client({ intents: [GatewayIntentBits.Guilds] });

  client.once('ready', async () => {
    console.log(`Logged in as ${client.user.tag}`);
    console.log(`Deploying commands to ${client.guilds.cache.size} guilds...`);

    for (const [guildId, guild] of client.guilds.cache) {
      await deployCommands(guildId);
    }

    console.log('All commands deployed!');
    client.destroy();
  });

  client.login(process.env.DISCORD_BOT_TOKEN);
}

module.exports = deployCommands;