Empty Texas State Driver License Generator

function processImage(
    originalImg,
    dlNumber = "12345678",
    dob = "01/01/1990",
    exp = "01/01/2030",
    lastName = "DOE",
    givenName = "JOHN",
    address1 = "123 TEXAS AVE",
    address2 = "AUSTIN, TX 78701",
    sex = "M",
    height = "5-10",
    eyes = "BRO",
    hair = "BLK",
    classType = "C"
) {
    const canvas = document.createElement('canvas');
    const ctx = canvas.getContext('2d');
    
    // Standard ID aspect ratio
    canvas.width = 800;
    canvas.height = 504; 

    // 1. Draw Base Background Gradient (Light Blue to White to Pink)
    const bgGradient = ctx.createLinearGradient(0, 0, canvas.width, canvas.height);
    bgGradient.addColorStop(0, '#e3f2fd');
    bgGradient.addColorStop(0.5, '#ffffff');
    bgGradient.addColorStop(1, '#ffebee');
    ctx.fillStyle = bgGradient;
    ctx.fillRect(0, 0, canvas.width, canvas.height);

    // 2. Draw Repeating Security Watermark Background
    ctx.save();
    ctx.font = 'bold 36px Arial';
    ctx.fillStyle = 'rgba(0, 0, 0, 0.03)';
    ctx.rotate(-Math.PI / 6);
    for (let i = -15; i < 25; i++) {
        for (let j = -10; j < 25; j++) {
            ctx.fillText('TEXAS', i * 160, j * 90);
        }
    }
    ctx.restore();

    // Helper: Draw Star Function
    const drawStar = (x, y, spikes, outerRadius, innerRadius) => {
        let rot = Math.PI / 2 * 3;
        let step = Math.PI / spikes;
        ctx.beginPath();
        ctx.moveTo(x, y - outerRadius);
        for (let i = 0; i < spikes; i++) {
            ctx.lineTo(x + Math.cos(rot) * outerRadius, y + Math.sin(rot) * outerRadius);
            rot += step;
            ctx.lineTo(x + Math.cos(rot) * innerRadius, y + Math.sin(rot) * innerRadius);
            rot += step;
        }
        ctx.lineTo(x, y - outerRadius);
        ctx.closePath();
        ctx.fill();
    };

    // 3. Draw Faint Large Center Star (Gold/Yellow)
    ctx.fillStyle = 'rgba(255, 215, 0, 0.15)';
    drawStar(canvas.width / 2, canvas.height / 2, 5, 180, 68);

    // 4. Header: Texas Flag (Top Left)
    ctx.fillStyle = '#002868'; // Blue
    ctx.fillRect(40, 20, 60, 80);
    ctx.fillStyle = '#ffffff'; // White 
    ctx.fillRect(100, 20, 90, 40);
    ctx.fillStyle = '#bf0a30'; // Red
    ctx.fillRect(100, 60, 90, 40);
    // Flag Star
    ctx.fillStyle = '#ffffff';
    drawStar(70, 60, 5, 16, 6);

    // 5. Header: Titles
    ctx.font = 'bold 55px Arial';
    ctx.fillStyle = '#111111';
    ctx.fillText('TEXAS', 220, 65);

    ctx.font = 'bold 22px Arial';
    ctx.fillStyle = '#005b96';
    ctx.fillText('DRIVER LICENSE', 222, 95);

    ctx.font = 'bold italic 28px "Times New Roman", Times, serif';
    ctx.fillStyle = '#002868';
    ctx.fillText('USA', 700, 50);

    // Decorative Line under header
    ctx.strokeStyle = '#005b96';
    ctx.lineWidth = 3;
    ctx.beginPath();
    ctx.moveTo(35, 112);
    ctx.lineTo(765, 112);
    ctx.stroke();

    // 6. Handle Main Portrait and Ghost Photo Crop
    const dw = 200;
    const dh = 260;
    const imgRatio = originalImg.width / originalImg.height;
    const targetRatio = dw / dh;
    let sx, sy, sw, sh;

    if (imgRatio > targetRatio) {
        sh = originalImg.height;
        sw = sh * targetRatio;
        sx = (originalImg.width - sw) / 2;
        sy = 0;
    } else {
        sw = originalImg.width;
        sh = sw / targetRatio;
        sx = 0;
        sy = (originalImg.height - sh) / 2;
    }

    // Main Photo
    ctx.drawImage(originalImg, sx, sy, sw, sh, 40, 125, dw, dh);
    ctx.strokeStyle = '#222';
    ctx.lineWidth = 2;
    ctx.strokeRect(40, 125, dw, dh);

    // Ghost Photo
    ctx.globalAlpha = 0.35;
    ctx.drawImage(originalImg, sx, sy, sw, sh, 620, 270, 120, 156);
    ctx.globalAlpha = 1.0; 

    // 7. Render Data Fields
    const drawField = (label, value, x, y, scale = 1) => {
        ctx.font = 'bold 11px Arial';
        ctx.fillStyle = '#b71c1c'; // Deep Red Label
        ctx.fillText(label, x, y);
        if (value) {
            ctx.font = `bold ${Math.round(16 * scale)}px Arial`;
            ctx.fillStyle = '#000000'; // Black Value
            ctx.fillText(String(value).toUpperCase(), x, y + Math.round(16 * scale) + 4);
        }
    };

    // Row 1
    drawField('4d DL No.', dlNumber, 260, 135, 1.25);
    drawField('3 DOB', dob, 460, 135, 1.25);
    drawField('9 CLASS', classType, 660, 135, 1.25);

    // Row 2
    drawField('4b EXP', exp, 260, 195, 1.1);

    // Row 3
    drawField('1 LAST NAME', lastName, 260, 250, 1.4);

    // Row 4
    drawField('2 FIRST NAME', givenName, 260, 310, 1.3);

    // Row 5 (Address)
    ctx.font = 'bold 11px Arial';
    ctx.fillStyle = '#b71c1c';
    ctx.fillText('8 ADDRESS', 260, 370);
    ctx.font = 'bold 18px Arial';
    ctx.fillStyle = '#000';
    if (address1) ctx.fillText(address1.toUpperCase(), 260, 390);
    if (address2) ctx.fillText(address2.toUpperCase(), 260, 412);

    // Row 6 (Physical Specs)
    drawField('15 SEX', sex, 260, 445);
    drawField('16 HGT', height, 330, 445);
    drawField('18 EYES', eyes, 400, 445);
    drawField('19 HAIR', hair, 470, 445);

    // 8. Add Signature
    if (givenName || lastName) {
        ctx.font = 'italic 28px cursive';
        ctx.fillStyle = '#111';
        ctx.textAlign = 'center';
        
        // Assemble proper name even if one piece is missing
        let fullName = [];
        if (givenName) fullName.push(givenName);
        if (lastName) fullName.push(lastName);
        
        ctx.fillText(fullName.join(' '), 40 + dw / 2, 430);
        ctx.textAlign = 'left'; // reset
    }

    return canvas;
}