import { ChatInputCommandInteraction, EmbedBuilder } from 'discord.js';
import redisClient from './redis';

import { GasAlert } from '../types/gasAlert';
import { GasPrices } from '../types/gasPrices';

// Respond to the "/gas" command
const handleGasCommand = async (interaction: ChatInputCommandInteraction): Promise<void> => {
  const gasPricesStr = await redisClient.get('current-prices');

  if (gasPricesStr) {
    const gasPrices = JSON.parse(gasPricesStr) as GasPrices;
    
    console.log(`Replying to command "/gas": \n`, gasPrices);
    
    const embed = new EmbedBuilder()
    .setColor('#0099ff')
    .setTitle('Current Gas Prices')
    .setDescription(`⚡ ${gasPrices.fast} ⦚⦚🚶 ${gasPrices.average} ⦚⦚ 🐢  ${gasPrices.slow}`);
    await interaction.reply({ embeds: [embed] });
  } else {
    console.log(`Error fetching gas prices!`);
    await interaction.reply('ERROR FETCHING GAS!!!1!')
  }
};

// Respond to the "/gas alert ${gwei}" command
const handleGasAlertCommand = async (interaction: ChatInputCommandInteraction): Promise<void> => {
  const threshold = parseInt(interaction.options.getString('gwei')!);
  const channelId = interaction.channelId;
  const userId = interaction.user.id;

  const gasAlert: GasAlert = { threshold, channelId, userId };

  console.log(`Replying to command "/gas gwei ${threshold}"`);

  await redisClient.hSet('gas-alerts', `${userId}`, JSON.stringify(gasAlert));

  await interaction.reply(`Your gas alert threshold of ${threshold} Gwei has been set.`);
};

// Respond to the "/gas pending" command
const handleGasPendingCommand = async (interaction: ChatInputCommandInteraction): Promise<void> => {
  const userId = interaction.user.id;
  
  const alertStr = await redisClient.hGet('gas-alerts', `${userId}`);
  const { threshold = null } = alertStr ? JSON.parse(alertStr) : {};

  console.log(`Replying to command "/gas pending"`);

  if (threshold === null) {
    await interaction.reply('No gas price alerts set');
  } else {
    await interaction.reply(`Current gas price alert threshold: ${threshold} Gwei`);
  }
};

// Respond to the "/alert-delete" command
const handleAlertDeleteCommand = async (interaction: ChatInputCommandInteraction): Promise<void> => {
  const userId = interaction.user.id;
  const user = interaction.user.username;

  console.log(`Replying to command "/alert-delete"`);
  
  await redisClient.hDel('gas-alerts', `${userId}`);

  await interaction.reply(`Removed your gas price alert, ${user}`);
};

export { handleGasCommand, handleGasAlertCommand, handleGasPendingCommand, handleAlertDeleteCommand };