index.html

<!DOCTYPE html>
<html>
<head>
    <title>Tesla FleetAPI Setup</title>
    <style>
        body {
            font-family: Helvetica, Arial, sans-serif;
        }
        .code {
            font-family: monospace;
            background-color: #f4f4f4;
            color: blue;
            padding: 2px 4px;
            border-radius: 4px;
            display: inline-block;
        }
    </style>
</head>
<body>
    <h1>Tesla FleetAPI Setup</h1>
    <p>Copy the code below and paste it into the "code" field in the Tesla FleetAPI setup script.</p>
    <h3>Authorization Code</h3>
    <script>
        // Function to extract GET parameter from URL
        function getParameterByName(name, url) {
            if (!url) url = window.location.href;
            name = name.replace(/[\[\]]/g, '\\$&');
            var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)'),
                    results = regex.exec(url);
            if (!results) return null;
            if (!results[2]) return '';
            return decodeURIComponent(results[2].replace(/\+/g, ' '));
        }

        // Get the value of the "code" parameter
        var code = getParameterByName('code');

        // If the "code" parameter is not present, display an error message
        if (!code) {
            var errorDiv = document.createElement('p');
            errorDiv.textContent = 'Error: "code" parameter is missing from the URL.';
            document.body.appendChild(errorDiv);
        }
        else {
            var codeDiv = document.createElement('div');
            codeDiv.className = 'code';
            var codeSpan = document.createElement('span');
            codeSpan.textContent = code;
            var copyButton = document.createElement('button');
            copyButton.textContent = 'Copy';
            copyButton.onclick = copyToClipboard;
            codeDiv.appendChild(codeSpan);
            codeDiv.appendChild(document.createTextNode(' '));
            codeDiv.appendChild(copyButton);
            document.body.appendChild(codeDiv);
        }

        // Function to copy the code to clipboard
        function copyToClipboard() {
            var tempInput = document.createElement('input');
            tempInput.value = code;
            document.body.appendChild(tempInput);
            tempInput.select();
            document.execCommand('copy');
            document.body.removeChild(tempInput);
            alert('Code copied to clipboard!');
        }
    </script>
</body>
</html>