app.js

var auctionItem = {
  name: "Item Name",
  description: "Reference 3838/1 Ellipse | A yellow gold bracelet watch, Circa 1985",
  startingBid: 100,
  highestBid: 100,
};

let currentHighestBid = 100;
let currentBids = {}; // Object to store current bids and bidders' maximum bids

document.getElementById("name").innerHTML = auctionItem.name;
document.getElementById("description").innerHTML = auctionItem.description;
document.getElementById("highest-bid").innerHTML = "$" + auctionItem.highestBid;
document.getElementById("current-bid").innerHTML = "$" + auctionItem.startingBid;

const bidForm = document.querySelector("form");
const bidInput = document.querySelector("#bid-amount");
const maxBidInput = document.querySelector("#max-bid-amount"); // Input for maximum bid amount
const currentBidDisplay = document.querySelector("#current-bid");
const highestBidDisplay = document.querySelector("#highest-bid");

bidForm.addEventListener("submit", (event) => {
  event.preventDefault();
  const newBidAmount = parseInt(bidInput.value);
  const maxBidAmount = parseInt(maxBidInput.value); // Retrieve maximum bid amount
  if (isNaN(newBidAmount) || newBidAmount <= currentHighestBid || newBidAmount > maxBidAmount) {
    alert("Invalid bid amount. Please enter a valid bid within your maximum limit.");
  } else {
    currentHighestBid = newBidAmount;
    currentBidDisplay.textContent = `$${currentHighestBid}`;
    highestBidDisplay.textContent = `$${currentHighestBid}`;
    // Update the current bid and maximum bid for the user (assuming 'John')
    currentBids["John"] = { currentBid: newBidAmount, maxBid: maxBidAmount };
  }
});

// Automatically increase bid based on maximum bid set by users
setInterval(() => {
Object.keys(currentBids).forEach(bidderName => {
  const bidderInfo = currentBids[bidderName];
  if (bidderInfo.maxBid > currentHighestBid) {
    currentHighestBid += 1; // Automatically increase bid by $1
    currentBidDisplay.textContent = `$${currentHighestBid}`;
    highestBidDisplay.textContent = `$${currentHighestBid}`;
  }
});
}, 1000);

// Countdown timer
const timeDisplay = document.querySelector("#time-remaining");
let timeRemaining = 60; // 60 seconds = 1 minute

const countdownInterval = setInterval(() => {
timeRemaining--;
timeDisplay.textContent = `Time Remaining: ${timeRemaining} seconds`;
if (timeRemaining <= 0) {
  clearInterval(countdownInterval);
  bidInput.disabled = true;
  const winnerMessage = `Auction ended. The winner is John with a bid of $${currentHighestBid}.`;
  alert(winnerMessage);
}
}, 1000);