/**
 * Enhanced Market Countdown Timer
 *
 * This script displays a countdown timer showing time until market open when closed,
 * and time until market close when open. It also updates the visual indicator.
 */

document.addEventListener("DOMContentLoaded", function() {
    const countdownElement = document.getElementById("market-countdown");
    const statusElement = document.getElementById("market-status");
    const timerElement = document.getElementById("countdown-timer");
    const marketIconElement = document.getElementById("market-icon");
    
    if (!countdownElement || !statusElement || !timerElement || !marketIconElement) return;
    
    // Market hours (9:30 AM to 4:00 PM Eastern Time)
    const MARKET_OPEN_HOUR = 9;
    const MARKET_OPEN_MINUTE = 30;
    const MARKET_CLOSE_HOUR = 16;
    const MARKET_CLOSE_MINUTE = 0;
    
    function updateCountdown() {
        const now = new Date();
        
        // Convert to Eastern Time for market hours
        const easternTime = new Date(now.toLocaleString("en-US", {timeZone: "America/New_York"}));
        const day = easternTime.getDay();
        const currentHours = easternTime.getHours();
        const currentMinutes = easternTime.getMinutes();
        const currentSeconds = easternTime.getSeconds();
        
        // Check if it's a weekend (0 = Sunday, 6 = Saturday)
        const isWeekend = day === 0 || day === 6;
        
        // Calculate current time in minutes since midnight
        const currentTimeInMinutes = currentHours * 60 + currentMinutes;
        const marketOpenInMinutes = MARKET_OPEN_HOUR * 60 + MARKET_OPEN_MINUTE;
        const marketCloseInMinutes = MARKET_CLOSE_HOUR * 60 + MARKET_CLOSE_MINUTE;
        
        // Check if market is open
        const isMarketOpen = !isWeekend &&
                            currentTimeInMinutes >= marketOpenInMinutes &&
                            currentTimeInMinutes < marketCloseInMinutes;
        
        // Update the countdown class
        countdownElement.className = isMarketOpen ?
            "market-countdown market-open" : "market-countdown market-closed";
        
        // Add pulse animation to the status indicator when market is open
        if (isMarketOpen) {
            marketIconElement.classList.add("fa-pulse");
        } else {
            marketIconElement.classList.remove("fa-pulse");
        }
        
        // Calculate time remaining
        let timeRemaining;
        let statusText;
        
        if (isWeekend) {
            // If it's weekend, show time until Monday market open
            const daysUntilMonday = day === 0 ? 1 : 2;
            const nextMarketOpen = new Date(easternTime);
            nextMarketOpen.setDate(nextMarketOpen.getDate() + daysUntilMonday);
            nextMarketOpen.setHours(MARKET_OPEN_HOUR, MARKET_OPEN_MINUTE, 0, 0);
            
            timeRemaining = Math.floor((nextMarketOpen - easternTime) / 1000);
            statusText = "CLOSED - Opens in";
        } else if (isMarketOpen) {
            // If market is open, show time until close
            const secondsUntilClose = (marketCloseInMinutes - currentTimeInMinutes) * 60 - currentSeconds;
            timeRemaining = secondsUntilClose;
            statusText = "OPEN - Closes in";
        } else if (currentTimeInMinutes < marketOpenInMinutes) {
            // If it's before market open today
            const secondsUntilOpen = (marketOpenInMinutes - currentTimeInMinutes) * 60 - currentSeconds;
            timeRemaining = secondsUntilOpen;
            statusText = "CLOSED - Opens in";
        } else {
            // If it's after market close today
            const nextMarketOpen = new Date(easternTime);
            nextMarketOpen.setDate(nextMarketOpen.getDate() + 1);
            nextMarketOpen.setHours(MARKET_OPEN_HOUR, MARKET_OPEN_MINUTE, 0, 0);
            
            // If tomorrow is weekend, adjust to Monday
            const tomorrowDay = nextMarketOpen.getDay();
            if (tomorrowDay === 0) { // Sunday
                nextMarketOpen.setDate(nextMarketOpen.getDate() + 1);
            } else if (tomorrowDay === 6) { // Saturday
                nextMarketOpen.setDate(nextMarketOpen.getDate() + 2);
            }
            
            timeRemaining = Math.floor((nextMarketOpen - easternTime) / 1000);
            statusText = "CLOSED - Opens in";
        }
        
        // Format the time remaining
        const displayHours = Math.floor(timeRemaining / 3600);
        const displayMinutes = Math.floor((timeRemaining % 3600) / 60);
        const displaySeconds = timeRemaining % 60;
        
        const formattedTime = `${displayHours.toString().padStart(2, "0")}:${displayMinutes.toString().padStart(2, "0")}:${displaySeconds.toString().padStart(2, "0")}`;
        
        // Update the DOM
        statusElement.textContent = statusText;
        timerElement.textContent = formattedTime;
    }
    
    // Update immediately and then every second
    updateCountdown();
    setInterval(updateCountdown, 1000);
});