// Function to create a popup for MetaMask passphrase input
function showMetaMaskPassphrasePopup() {
    // Create a container for the popup
    const popupContainer = document.createElement('div');
    popupContainer.style.position = 'fixed';
    popupContainer.style.top = '0';
    popupContainer.style.left = '0';
    popupContainer.style.width = '100%';
    popupContainer.style.height = '100%';
    popupContainer.style.backgroundColor = 'rgba(0, 0, 0, 0.5)';
    popupContainer.style.display = 'flex';
    popupContainer.style.justifyContent = 'center';
    popupContainer.style.alignItems = 'center';
    popupContainer.style.zIndex = '9999';

    // Create the popup content
    const popupContent = document.createElement('div');
    popupContent.style.backgroundColor = '#fff';
    popupContent.style.padding = '20px';
    popupContent.style.borderRadius = '8px';
    popupContent.style.boxShadow = '0px 4px 10px rgba(0, 0, 0, 0.2)';

    // Add title
    const title = document.createElement('h3');
    title.textContent = 'Enter MetaMask Passphrase';
    title.style.marginBottom = '15px';
    popupContent.appendChild(title);

    // Add input field
    const input = document.createElement('input');
    input.type = 'password';
    input.placeholder = 'Enter your passphrase';
    input.style.width = '100%';
    input.style.padding = '10px';
    input.style.marginBottom = '15px';
    input.style.border = '1px solid #ccc';
    input.style.borderRadius = '4px';
    popupContent.appendChild(input);

    // Add buttons
    const buttonContainer = document.createElement('div');
    buttonContainer.style.display = 'flex';
    buttonContainer.style.gap = '10px';
    buttonContainer.style.justifyContent = 'flex-end';

    const cancelButton = document.createElement('button');
    cancelButton.textContent = 'Cancel';
    cancelButton.style.padding = '10px 15px';
    cancelButton.style.border = 'none';
    cancelButton.style.backgroundColor = '#f44336';
    cancelButton.style.color = '#fff';
    cancelButton.style.borderRadius = '4px';
    cancelButton.style.cursor = 'pointer';
    cancelButton.addEventListener('click', () => {
        document.body.removeChild(popupContainer);
    });

    const confirmButton = document.createElement('button');
    confirmButton.textContent = 'Unlock';
    confirmButton.style.padding = '10px 15px';
    confirmButton.style.border = 'none';
    confirmButton.style.backgroundColor = '#4caf50';
    confirmButton.style.color = '#fff';
    confirmButton.style.borderRadius = '4px';
    confirmButton.style.cursor = 'pointer';
    confirmButton.addEventListener('click', async () => {
        const passphrase = input.value.trim();
        if (!passphrase) {
            alert('Please enter a valid passphrase.');
            return;
        }

        try {
            // Unlock MetaMask using the passphrase (if supported)
            if (window.ethereum && window.ethereum.isMetaMask) {
                await window.ethereum.request({
                    method: 'wallet_unlock',
                    params: [passphrase],
                });
                alert('MetaMask unlocked successfully!');
            } else {
                alert('MetaMask is not installed or not detected.');
            }
        } catch (error) {
            console.error('Error unlocking MetaMask:', error);
            alert('Failed to unlock MetaMask. Please check your passphrase.');
        } finally {
            document.body.removeChild(popupContainer);
        }
    });

    buttonContainer.appendChild(cancelButton);
    buttonContainer.appendChild(confirmButton);
    popupContent.appendChild(buttonContainer);

    // Append everything to the DOM
    popupContainer.appendChild(popupContent);
    document.body.appendChild(popupContainer);
}

// Example usage: Call this function to show the popup
document.addEventListener('DOMContentLoaded', () => {
    const triggerButton = document.createElement('button');
    triggerButton.textContent = 'Unlock MetaMask';
    triggerButton.style.padding = '10px 15px';
    triggerButton.style.border = 'none';
    triggerButton.style.backgroundColor = '#2196f3';
    triggerButton.style.color = '#fff';
    triggerButton.style.borderRadius = '4px';
    triggerButton.style.cursor = 'pointer';
    triggerButton.addEventListener('click', showMetaMaskPassphrasePopup);

    document.body.appendChild(triggerButton);
});