// Helper functions for the game

// Helper function to increase saturation of RGB color
function saturateColor(r, g, b, saturationBoost) {
    // Normalize RGB to 0-1
    r /= 255; g /= 255; b /= 255;
    
    // Convert to HSL
    var max = Math.max(r, g, b);
    var min = Math.min(r, g, b);
    var h, s, l = (max + min) / 2;
    
    if (max === min) {
        h = s = 0; // achromatic
    } else {
        var d = max - min;
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
        
        switch (max) {
            case r: h = ((g - b) / d + (g < b ? 6 : 0)) / 6; break;
            case g: h = ((b - r) / d + 2) / 6; break;
            case b: h = ((r - g) / d + 4) / 6; break;
        }
    }
    
    // Boost saturation
    s = Math.min(1, s * saturationBoost);
    
    // Convert back to RGB
    function hue2rgb(p, q, t) {
        if (t < 0) t += 1;
        if (t > 1) t -= 1;
        if (t < 1/6) return p + (q - p) * 6 * t;
        if (t < 1/2) return q;
        if (t < 2/3) return p + (q - p) * (2/3 - t) * 6;
        return p;
    }
    
    var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
    var p = 2 * l - q;
    
    r = Math.round(hue2rgb(p, q, h + 1/3) * 255);
    g = Math.round(hue2rgb(p, q, h) * 255);
    b = Math.round(hue2rgb(p, q, h - 1/3) * 255);
    
    return { r: r, g: g, b: b };
}

function calculateConsumptionRates(state, CONFIG, consumedMassKg) {
    const now = Date.now();

    // Only update rates once per second
    if (!state._lastRateUpdate) state._lastRateUpdate = 0;
    if (now - state._lastRateUpdate < 1000) return; // skip if less than 1s
    state._lastRateUpdate = now;

    function updateWindow(massKey, timeKey, prevRateKey) {
        const start = state[timeKey] || now;

        // Add new mass
        state[massKey] = (state[massKey] || 0) + consumedMassKg;

        const elapsed = now - start;
        const rate = elapsed > 0 ? state[massKey] / (elapsed / 1000) : 0;

        // Compare to previous rate to get trend
        if (state[prevRateKey] === undefined) state[prevRateKey] = rate;
        state[prevRateKey + 'Trend'] =
            rate > state[prevRateKey] ? 'up' :
            rate < state[prevRateKey] ? 'down' : 'same';

        // Save current rate for next tick
        state[prevRateKey] = rate;

        return rate;
    }

    state.rateShort = updateWindow("sM", "sT", "prevRateShort");
    state.rateMedium = updateWindow("mM", "mT", "prevRateMedium");
    state.rateLong = updateWindow("lM", "lT", "prevRateLong");
}

function formatOfflineTime(ms) {
    var seconds = Math.floor(ms / 1000);
    var minutes = Math.floor(seconds / 60);
    var hours = Math.floor(minutes / 60);
    var days = Math.floor(hours / 24);

    if (days > 0) {
        return days + ' day' + (days > 1 ? 's' : '') + ', ' + (hours % 24) + ' hour' + ((hours % 24) !== 1 ? 's' : '');
    } else if (hours > 0) {
        return hours + ' hour' + (hours > 1 ? 's' : '') + ', ' + (minutes % 60) + ' min';
    } else if (minutes > 0) {
        return minutes + ' minute' + (minutes > 1 ? 's' : '');
    } else {
        return seconds + ' second' + (seconds > 1 ? 's' : '');
    }
}

function showOfflineNotification(timeAway, massGained, rateName) {
    var notification = document.createElement('div');
    notification.style.position = 'fixed';
    notification.style.top = '50%';
    notification.style.left = '50%';
    notification.style.transform = 'translate(-50%, -50%)';
    notification.style.background = 'rgba(20, 20, 30, 0.95)';
    notification.style.border = '2px solid rgba(161, 161, 161, 0.5)';
    notification.style.padding = '20px 30px';
    notification.style.borderRadius = '8px';
    notification.style.color = 'rgba(255, 255, 255, 0.9)';
    notification.style.fontSize = '12px';
    notification.style.zIndex = '10000';
    notification.style.textAlign = 'center';
    notification.style.lineHeight = '1.6';

    notification.innerHTML =
        '<div>Inactive for: <strong>' + timeAway + '</strong></div>' +
        '<div>Mass gained: <strong>' + massGained + '</strong></div>';

    document.body.appendChild(notification);

    document.getElementById('space').addEventListener('click', function() {
        notification.remove();
    });
}