require('dotenv').config();
const { Client, GatewayIntentBits, EmbedBuilder } = require('discord.js');
const fs = require('fs');
const path = require('path');

let priceHistory = {
  currentPrice: 0,
  prices: [{
      time: Date.now(),
      price: 0,
  }]
};

const client = new Client({
  intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildMessages],
});

const solanaPriceChannelId = process.env.SOLANA_PRICE_CHANNEL_ID;
const announcementsChannelId = process.env.ANNOUNCEMENTS_CHANNEL_ID;
const solanaDataFile = './data/solana.json';
let lastAnnouncedPrice;
let lastPriceMessageId;

client.once('ready', async () => {
  console.log('Bot is online!');
  let solanaData = readSolanaData();
  if (solanaData) {
    priceHistory = solanaData;
    lastAnnouncedPrice = solanaData.lastAnnouncedPrice;
    lastPriceMessageId = solanaData.lastPriceMessageId;
  }
  immediatePriceCheckAndAnnounce();
  checkPriceContinuously();
});

async function fetchSolanaPrice() {
  const cryptocompareApiUrl = 'https://min-api.cryptocompare.com/data/price?fsym=SOL&tsyms=USD';
  try {
    const fetch = (await import('node-fetch')).default;
    const response = await fetch(cryptocompareApiUrl);
    const data = await response.json();
    return parseFloat(data.USD).toFixed(2);
  } catch (error) {
    console.error('Error fetching Solana price:', error);
    return null;
  }
}

function pruneOldData() {

  const sixHoursInMilliseconds = 6 * 60 * 60 * 1000;
  const oneDayInMilliseconds = 24 * 60 * 60 * 1000;
  const cutoffTime6Hours = Date.now() - sixHoursInMilliseconds;
  const cutoffTime1Day = Date.now() - oneDayInMilliseconds;

  priceHistory.prices = priceHistory.prices.filter(pricePoint => pricePoint.time > cutoffTime1Day);

  if (priceHistory.prices.length < 360) {
    console.warn("Warning: Not enough data points for accurate 6-hour calculations.");
  }
}

async function fetchSolanaPriceAndUpdateHistory() {
  const currentPrice = await fetchSolanaPrice();
  if (currentPrice) {
    pruneOldData();

    priceHistory.prices.push({ time: Date.now(), price: currentPrice });
    priceHistory.currentPrice = currentPrice;

    saveSolanaData(priceHistory);
  }
}

function immediatePriceCheckAndAnnounce() {
  const solanaData = readSolanaData();
  const lastKnownPrice = solanaData ? solanaData.price : null;
  const currentPrice = fetchSolanaPrice();
}



  const now = Date.now();

  function calculateChanges() {
  const latestPrice = parseFloat(priceHistory.currentPrice);
  let oneMinChange = { percent: 0, dollar: 0 };
  let fiveMinChange = { percent: 0, dollar: 0 };
  let oneHourChange = { percent: 0, dollar: 0 };
  let sixHourChange = { percent: 0, dollar: 0 }
  let oneDayChange = { percent: 0, dollar: 0 };

  const now = Date.now();

  function findPriceAgo(minutesAgo) {
    const targetTime = now - minutesAgo * 60 * 1000;
    return priceHistory.prices.reduce((prev, curr) => {
      return Math.abs(curr.time - targetTime) < Math.abs(prev.time - targetTime) ? curr : prev;
    }, priceHistory.prices[0]);
  }

  if (priceHistory.prices.length >= 2) {
    const oneMinAgoPrice = parseFloat(findPriceAgo(1).price);
    oneMinChange.percent = ((latestPrice - oneMinAgoPrice) / oneMinAgoPrice) * 100;
    oneMinChange.dollar = latestPrice - oneMinAgoPrice;
  }

  if (priceHistory.prices.length >= 6) {
    const fiveMinAgoPrice = parseFloat(findPriceAgo(5).price);
    fiveMinChange.percent = ((latestPrice - fiveMinAgoPrice) / fiveMinAgoPrice) * 100;
    fiveMinChange.dollar = latestPrice - fiveMinAgoPrice;
  }

  if (priceHistory.prices.length >= 61) {
    const oneHourAgoPrice = parseFloat(findPriceAgo(60).price);
    oneHourChange.percent = ((latestPrice - oneHourAgoPrice) / oneHourAgoPrice) * 100;
    oneHourChange.dollar = latestPrice - oneHourAgoPrice;
  }

  if (priceHistory.prices.length >= 1440) {
    const oneDayAgoPrice = parseFloat(findPriceAgo(1440).price);
    oneDayChange.percent = ((latestPrice - oneDayAgoPrice) / oneDayAgoPrice) * 100;
    oneDayChange.dollar = latestPrice - oneDayAgoPrice;
  }

  if (priceHistory.prices.length >= 360) {
    const sixHourAgoPrice = parseFloat(findPriceAgo(360).price);
    sixHourChange.percent = ((latestPrice - sixHourAgoPrice) / sixHourAgoPrice) * 100;
    sixHourChange.dollar = latestPrice - sixHourAgoPrice;
  }

  return { oneMinChange, fiveMinChange, oneHourChange, sixHourChange, oneDayChange };
}

async function sendNewPriceMessage(embed) {
  const sentMessage = await solanaPriceChannel.send({ embeds: [embed] });
  lastPriceMessageId = sentMessage.id;

  saveSolanaData({ ...priceHistory, lastPriceMessageId: sentMessage.id });
}

async function sendNewPriceMessage(solanaPriceChannel, embed) {
  const sentMessage = await solanaPriceChannel.send({ embeds: [embed] });
  lastPriceMessageId = sentMessage.id;

  saveSolanaData({ ...priceHistory, lastPriceMessageId: sentMessage.id });
}

async function checkPriceContinuously() {
  await fetchSolanaPriceAndUpdateHistory();
  const { oneMinChange, fiveMinChange, oneHourChange, sixHourChange, oneDayChange } = calculateChanges();

  console.log(`Current Price: ${priceHistory.currentPrice}`);

  const randomColor = Math.floor(Math.random() * 16777215).toString(16).padStart(6, '0');

  const embed = new EmbedBuilder()
    .setColor(`#${randomColor}`)
    .setThumbnail('https://solana.com/src/img/branding/solanaLogoMark.png')
    .setTitle('Solana (SOL) Price Update')
    .setURL('https://coinmarketcap.com/currencies/solana/')
    .setDescription(`**Current Price: \`$${priceHistory.currentPrice}\`**`)
    .addFields([
      { name: '💰 Current Price', value: `**\`$${priceHistory.currentPrice}\`**`, inline: false },
      { name: '1 Minute Change', value: `${oneMinChange.percent.toFixed(2)}% (${oneMinChange.dollar.toFixed(2)} USD)`, inline: true },
      { name: '5 Minute Change', value: `${fiveMinChange.percent.toFixed(2)}% (${fiveMinChange.dollar.toFixed(2)} USD)`, inline: true },
      { name: '1 Hour Change', value: `${oneHourChange.percent.toFixed(2)}% (${oneHourChange.dollar.toFixed(2)} USD)`, inline: true },
      { name: '6 Hour Change', value: `${sixHourChange.percent.toFixed(2)}% (${sixHourChange.dollar.toFixed(2)} USD)`, inline: true },
      { name: '1 Day Change', value: `${oneDayChange.percent.toFixed(2)}% (${oneDayChange.dollar.toFixed(2)} USD)`, inline: true }
    ])
    .setTimestamp()
    .setImage(process.env.IMAGE_URL);

  const solanaPriceChannel = await client.channels.fetch(solanaPriceChannelId);

  if (lastPriceMessageId) {
    try {
      const message = await solanaPriceChannel.messages.fetch(lastPriceMessageId);
      await message.edit({ embeds: [embed] });
    } catch (error) {
      console.error('Error updating price message, sending a new one:', error);
      sendNewPriceMessage(solanaPriceChannel, embed);
    }
  } else {
    console.log('No lastPriceMessageId found, sending a new message.');
    sendNewPriceMessage(solanaPriceChannel, embed);
  }

  if (lastAnnouncedPrice !== null && (parseFloat(priceHistory.currentPrice) - lastAnnouncedPrice >= 2.5)) {
    const announcementsChannel = await client.channels.fetch(announcementsChannelId);
    await announcementsChannel.send(`@everyone Solana price has increased significantly! Current price: $${priceHistory.currentPrice}`);
    lastAnnouncedPrice = parseFloat(priceHistory.currentPrice);
    saveSolanaData({ ...priceHistory, lastAnnouncedPrice });
  }

  setTimeout(checkPriceContinuously, 60000);
}

function saveSolanaData(data) {
  const dir = path.dirname(solanaDataFile);
  if (!fs.existsSync(dir)) {
    fs.mkdirSync(dir, { recursive: true });
  }

  const dataToSave = {
    ...data,
    lastAnnouncedPrice: lastAnnouncedPrice,
  };

  fs.writeFileSync(solanaDataFile, JSON.stringify(dataToSave, null, 2), 'utf8');
}

function readSolanaData() {
  try {
    if (fs.existsSync(solanaDataFile)) {
      const fileContent = fs.readFileSync(solanaDataFile, 'utf8');
      const data = JSON.parse(fileContent);

      lastAnnouncedPrice = data.lastAnnouncedPrice || null;
      return data;
    }
  } catch (error) {
    console.error('Error reading Solana data:', error);
  }
  return null;
}

client.login(process.env.DISCORD_BOT_TOKEN);