@if(!Auth::user()->signature)
    <!-- Modal Form (within your Blade component or page) -->
    <form action="{{ url('signature/store') }}" method="POST" id="modalSignatureForm">
        @csrf
        @method('PUT')
        <div id="signatureModal" class="fixed inset-0 flex items-center justify-center z-50 hidden">
            <!-- Overlay -->
            <div class="fixed inset-0 bg-black opacity-50"></div>
            <!-- Modal Content -->
            <div class="bg-white p-6 rounded z-10 max-w-md mx-auto">
                <h1 class="text-xl font-bold mb-4">Add a Signature</h1>
                <p class="mb-4">No signature found. Please create your signature below.</p>

                <!-- New Signature Pad -->
                <div id="newSignaturePadContainer">
                    <canvas id="new-signature-pad" class="w-full" style="height:200px;"></canvas>
                    <!-- Hidden input to store the signature data -->
                    <input type="hidden" name="new_signature_pad" id="savedSignaturePadData" value="">
                    <button type="submit" id="saveNewSignature" class="mt-2 px-4 py-2 bg-green-500 text-white rounded">
                        Save and Use Signature
                    </button>
                </div>

                <!-- Close Modal Button -->
                <button type="button" id="closeSignatureModal" class="mt-4 px-4 py-2 bg-red-500 text-white rounded">
                    Close
                </button>
            </div>
        </div>
    </form>

    <!-- Modal Script -->
    <script>
        document.addEventListener('DOMContentLoaded', function () {
            const modal = document.getElementById('signatureModal');
            const canvas = document.getElementById('new-signature-pad');
            const saveButton = document.getElementById('saveNewSignature');
            const closeButton = document.getElementById('closeSignatureModal');
            const hiddenInput = document.getElementById('savedSignaturePadData');

            // Initialize the signature pad for the modal canvas
            const signaturePad = new SignaturePad(canvas);

            // Resize canvas function
            function resizeCanvas() {
                const ratio = Math.max(window.devicePixelRatio || 1, 1);
                canvas.width = canvas.offsetWidth * ratio;
                canvas.height = 200 * ratio; // Fixed height
                canvas.getContext("2d").scale(ratio, ratio);
                signaturePad.clear();
            }

            // Show modal and resize canvas
            document.getElementById("useSavedSignature").addEventListener("click", function () {
                const userSignature = "{{ Auth::user()->signature }}";

                if (!userSignature) {
                    // Show modal and resize canvas when it's displayed
                    modal.classList.remove('hidden');
                    setTimeout(resizeCanvas, 100); // Delay to allow modal rendering
                }
            });

            // Save button: if pad not empty, set hidden input (the form will submit)
            saveButton.addEventListener('click', function (e) {
                if (signaturePad.isEmpty()) {
                    alert("Please provide a signature first.");
                    e.preventDefault(); // Prevent submission if empty
                } else {
                    // Set the hidden input value to the signature data URL
                    hiddenInput.value = signaturePad.toDataURL("image/png");
                    modal.classList.add('hidden'); // Optionally, close the modal after saving
                }
            });

            // Close button simply hides the modal
            closeButton.addEventListener('click', function () {
                modal.classList.add('hidden');
            });

            // Resize canvas on window resize
            window.addEventListener('resize', resizeCanvas);
        });

    </script>
@endif