Custom Oklahoma Driver’s License Image Creator

/**
 * Creates a custom Oklahoma Driver's License image.
 * IMPORTANT: This tool is for novelty and entertainment purposes only.
 * Creating and using fake identification is illegal and can have severe consequences.
 * This function does not create a real or passable ID.
 */
async function processImage(
    originalImg,
    licenseNumber = '999000111',
    issueDate = '08-14-2023',
    expirationDate = '08-14-2027',
    dateOfBirth = '08-14-1990',
    lastName = 'DOE',
    firstName = 'JANE',
    middleName = 'A',
    address = '123 ANYWHERE ST',
    city = 'OKLAHOMA CITY',
    state = 'OK',
    zipCode = '73102',
    sex = 'F',
    height = '5\'-06"',
    weight = '140 LBS',
    eyes = 'BRO'
) {

    /**
     * Dynamically loads a Google Font by creating a <link> element.
     * This ensures the font is available for use on the canvas.
     * @param {string} fontName - The name of the font to load from Google Fonts.
     */
    const loadGoogleFont = async (fontName, fontStyle = '') => {
        const fontId = `google-font-${fontName.replace(/\s/g, '-')}`;
        if (document.getElementById(fontId)) {
             await document.fonts.load(`${fontStyle} 12px "${fontName.split(':')[0]}"`);
             return; // Already added
        }
        
        const link = document.createElement('link');
        link.id = fontId;
        link.rel = 'stylesheet';
        link.href = `https://fonts.googleapis.com/css2?family=${fontName.replace(/\s/g, '+')}&display=swap`;
        document.head.appendChild(link);
        
        // Wait for the font to be loaded and ready for use.
        await document.fonts.load(`${fontStyle} 12px "${fontName.split(':')[0]}"`);
    };

    // Load necessary fonts from Google Fonts
    await loadGoogleFont('Roboto+Condensed:wght@400;700', 'normal');
    await loadGoogleFont('Roboto+Condensed:wght@400;700', 'bold');
    await loadGoogleFont('Dancing+Script', 'normal');
    await loadGoogleFont('Libre+Barcode+39+Text', 'normal');


    // Canvas setup based on CR80 ID card dimensions (scaled up for resolution)
    const W = 1011;
    const H = 638;
    const canvas = document.createElement('canvas');
    canvas.width = W;
    canvas.height = H;
    const ctx = canvas.getContext('2d');
    ctx.imageSmoothingEnabled = true;

    // --- Draw Background ---
    const gradient = ctx.createLinearGradient(0, 0, W, H);
    gradient.addColorStop(0, '#d1e9f1');
    gradient.addColorStop(0.5, '#e0f2f1');
    gradient.addColorStop(1, '#e3f2e4');
    ctx.fillStyle = gradient;
    ctx.fillRect(0, 0, W, H);

    // --- Draw Header ---
    // Simple state seal representation
    ctx.fillStyle = '#6e9bc7';
    ctx.beginPath();
    ctx.arc(80, 80, 45, 0, Math.PI * 2);
    ctx.fill();
    ctx.fillStyle = 'white';
    ctx.font = 'bold 50px "Roboto Condensed"';
    ctx.textAlign = 'center';
    ctx.textBaseline = 'middle';
    ctx.fillText('OK', 80, 80);
    
    // Reset canvas text alignment for subsequent drawing
    ctx.textAlign = 'left';
    ctx.textBaseline = 'alphabetic'; 

    // Header Text
    ctx.fillStyle = '#1e3a8a'; // Dark Blue
    ctx.font = 'bold 70px "Roboto Condensed"';
    ctx.fillText('OKLAHOMA', 150, 90);
    ctx.fillStyle = '#4b5563'; // Gray
    ctx.font = '40px "Roboto Condensed"';
    ctx.fillText('DRIVER LICENSE', 155, 135);

    // --- Draw Photos ---
    // Main Photo
    const photoX = 40;
    const photoY = 180;
    const photoW = 300;
    const photoH = 375;
    ctx.drawImage(originalImg, photoX, photoY, photoW, photoH);
    ctx.strokeStyle = '#374151';
    ctx.lineWidth = 2;
    ctx.strokeRect(photoX, photoY, photoW, photoH);

    // Ghost Photo (semi-transparent overlay)
    ctx.globalAlpha = 0.15;
    ctx.drawImage(originalImg, 400, 250, 400, 500);
    ctx.globalAlpha = 1.0;

    // --- Draw Data Fields ---
    const dataStartX = 380;
    const labelColor = '#d9534f'; 
    const dataColor = '#1f2937';
    const labelFont = '20px "Roboto Condensed"';
    const dataFont = 'bold 24px "Roboto Condensed"';

    const drawField = (label, value, x, y) => {
        ctx.font = labelFont;
        ctx.fillStyle = labelColor;
        ctx.fillText(label, x, y);
        ctx.font = dataFont;
        ctx.fillStyle = dataColor;
        ctx.fillText(value.toUpperCase(), x + 5, y + 25);
    };
    
    // DL Number (larger and more prominent)
    ctx.font = labelFont;
    ctx.fillStyle = labelColor;
    ctx.fillText('DLN', dataStartX, 175);
    ctx.font = 'bold 36px "Roboto Condensed"';
    ctx.fillStyle = labelColor;
    ctx.fillText(licenseNumber, dataStartX + 45, 178);
    
    let currentY = 220;
    const lineSpacing = 65;

    // Name Fields
    drawField('LN', lastName, dataStartX, currentY);
    drawField('FN', `${firstName} ${middleName}`, dataStartX + 250, currentY);
    currentY += lineSpacing;

    // Address Fields
    drawField('ADDRESS', address, dataStartX, currentY);
    currentY += lineSpacing;
    drawField('', `${city}, ${state} ${zipCode}`, dataStartX, currentY);
    currentY += lineSpacing;

    // Date Fields
    drawField('DOB', dateOfBirth, dataStartX, currentY);
    drawField('ISS', issueDate, dataStartX + 250, currentY);
    drawField('EXP', expirationDate, dataStartX + 500, currentY);
    currentY += lineSpacing;

    // Physical Attributes
    drawField('SEX', sex, dataStartX, currentY);
    drawField('HGT', height, dataStartX + 120, currentY);
    drawField('WGT', weight, dataStartX + 270, currentY);
    drawField('EYES', eyes, dataStartX + 420, currentY);

    // --- Draw Signature ---
    const sigX = 40;
    const sigY = 590;
    ctx.strokeStyle = '#1f2937';
    ctx.lineWidth = 1;
    ctx.beginPath();
    ctx.moveTo(sigX, sigY);
    ctx.lineTo(sigX + 300, sigY);
    ctx.stroke();
    
    ctx.fillStyle = '#0a2140';
    ctx.font = '35px "Dancing Script"';
    ctx.fillText(`${firstName} ${lastName}`, sigX + 20, sigY - 10);
    
    // --- Draw Footer Barcode ---
    ctx.font = '40px "Libre Barcode 39 Text"';
    ctx.fillStyle = '#000';
    ctx.textAlign = 'center';
    ctx.fillText(`*${licenseNumber}${lastName}*`, W/2, H - 25);

    return canvas;
}