import cron from 'node-cron';
import moment from 'moment-timezone';
import config from '../../config.cjs';

let scheduledTasks = {};

const groupSetting = async (m, gss) => {
  try {
    const prefix = config.PREFIX;
const cmd = m.body.startsWith(prefix) ? m.body.slice(prefix.length).split(' ')[0].toLowerCase() : '';
const text = m.body.slice(prefix.length + cmd.length).trim();

    const validCommands = ['group'];
    if (!validCommands.includes(cmd)) return;

    if (!m.isGroup) return m.reply("*📛 THIS COMMAND CAN ONLY BE USED IN GROUPS*");
    const groupMetadata = await gss.groupMetadata(m.from);
    const participants = groupMetadata.participants;
    const botNumber = await gss.decodeJid(gss.user.id);
    const botAdmin = participants.find(p => p.id === botNumber)?.admin;
    const senderAdmin = participants.find(p => p.id === m.sender)?.admin;

    if (!botAdmin) return m.reply("*📛 BOT MUST BE AN ADMIN TO USE THIS COMMAND*");
    if (!senderAdmin) return m.reply("*📛 YOU MUST BE AN ADMIN TO USE THIS COMMAND*");

    const args = m.body.slice(prefix.length + cmd.length).trim().split(/\s+/);
    if (args.length < 1) return m.reply(`Please specify a setting (open/close) and optionally a time.\n\nExample:\n*${prefix + cmd} open* or *${prefix + cmd} open 04:00 PM*`);

    const groupSetting = args[0].toLowerCase();
    const time = args.slice(1).join(' ');

    // Handle immediate setting if no time is provided
    if (!time) {
      if (groupSetting === 'close') {
        await gss.groupSettingUpdate(m.from, 'announcement');
        return m.reply("Group successfully closed.");
      } else if (groupSetting === 'open') {
        await gss.groupSettingUpdate(m.from, 'not_announcement');
        return m.reply("Group successfully opened.");
      } else {
        return m.reply(`Invalid setting. Use "open" to open the group and "close" to close the group.\n\nExample:\n*${prefix + cmd} open* or *${prefix + cmd} close*`);
      }
    }

    // Check if the provided time is valid
    if (!/^\d{1,2}:\d{2}\s*(?:AM|PM)$/i.test(time)) {
      return m.reply(`Invalid time format. Use HH:mm AM/PM format.\n\nExample:\n*${prefix + cmd} open 04:00 PM*`);
    }

    // Convert time to 24-hour format
    const [hour, minute] = moment(time, ['h:mm A', 'hh:mm A']).format('HH:mm').split(':').map(Number);
    const cronTime = `${minute} ${hour} * * *`;

    console.log(`Scheduling ${groupSetting} at ${cronTime} IST`);

    // Clear any existing scheduled task for this group
    if (scheduledTasks[m.from]) {
      scheduledTasks[m.from].stop();
      delete scheduledTasks[m.from];
    }

    scheduledTasks[m.from] = cron.schedule(cronTime, async () => {
      try {
        console.log(`Executing scheduled task for ${groupSetting} at ${moment().format('HH:mm')} IST`);
        if (groupSetting === 'close') {
          await gss.groupSettingUpdate(m.from, 'announcement');
          await gss.sendMessage(m.from, { text: "Group successfully closed." });
        } else if (groupSetting === 'open') {
          await gss.groupSettingUpdate(m.from, 'not_announcement');
          await gss.sendMessage(m.from, { text: "Group successfully opened." });
        }
      } catch (err) {
        console.error('Error during scheduled task execution:', err);
        await gss.sendMessage(m.from, { text: 'An error occurred while updating the group setting.' });
      }
    }, {
      timezone: "Asia/Kolkata"
    });

    m.reply(`Group will be set to "${groupSetting}" at ${time} IST.`);
  } catch (error) {
    console.error('Error:', error);
    m.reply('An error occurred while processing the command.');
  }
};

export default groupSetting;