<h1>License Integration</h1>

<p>Integrating license validation into your software is crucial for protecting your intellectual property and ensuring compliance. Our system provides multiple integration methods for different programming languages and frameworks.</p>

<h2>Integration Methods</h2>
<ul>
    <li><strong>API Integration</strong>
        <ul>
            <li>RESTful API endpoints</li>
            <li>JSON response format</li>
            <li>Real-time validation</li>
            <li>Webhook notifications</li>
        </ul>
    </li>

    <li><strong>SDK Integration</strong>
        <ul>
            <li>Language-specific SDKs</li>
            <li>Pre-built libraries</li>
            <li>Automatic updates</li>
            <li>Community support</li>
        </ul>
    </li>

    <li><strong>Plugin Integration</strong>
        <ul>
            <li>Framework-specific plugins</li>
            <li>One-click installation</li>
            <li>Automatic configuration</li>
            <li>Regular updates</li>
        </ul>
    </li>

    <li><strong>Manual Integration</strong>
        <ul>
            <li>Custom implementation</li>
            <li>Full control over process</li>
            <li>Framework agnostic</li>
            <li>Advanced customization</li>
        </ul>
    </li>
</ul>

<h2>Supported Programming Languages</h2>
<ul>
    <li><strong>PHP</strong> - Web applications, CMS, frameworks</li>
    <li><strong>JavaScript/Node.js</strong> - Frontend, backend, desktop apps</li>
    <li><strong>Python</strong> - Data science, web apps, automation</li>
    <li><strong>Java</strong> - Enterprise applications, Android</li>
    <li><strong>C#</strong> - .NET applications, Unity games</li>
    <li><strong>C++</strong> - System programming, games, applications</li>
    <li><strong>Ruby</strong> - Web development, Rails applications</li>
    <li><strong>Go</strong> - Cloud services, networking, DevOps</li>
    <li><strong>Rust</strong> - System programming, performance-critical apps</li>
    <li><strong>Swift</strong> - iOS and macOS applications</li>
</ul>

<h2>Integration Steps</h2>
<ol>
    <li><strong>Choose Integration Method</strong>
        <ul>
            <li>Evaluate your requirements</li>
            <li>Consider development resources</li>
            <li>Review available options</li>
            <li>Select appropriate method</li>
        </ul>
    </li>

    <li><strong>Obtain API Credentials</strong>
        <ul>
            <li>Generate API key</li>
            <li>Configure access permissions</li>
            <li>Set up webhook endpoints</li>
            <li>Test API connectivity</li>
        </ul>
    </li>

    <li><strong>Implement License Validation</strong>
        <ul>
            <li>Add validation code to application</li>
            <li>Handle different license types</li>
            <li>Implement error handling</li>
            <li>Test validation logic</li>
        </ul>
    </li>

    <li><strong>Handle Validation Responses</strong>
        <ul>
            <li>Process success responses</li>
            <li>Handle error conditions</li>
            <li>Implement retry logic</li>
            <li>Log validation attempts</li>
        </ul>
    </li>

    <li><strong>Domain Validation</strong>
        <ul>
            <li>Implement domain checking</li>
            <li>Handle subdomains</li>
            <li>Support multiple domains</li>
            <li>Validate domain format</li>
        </ul>
    </li>

    <li><strong>Error Handling & Logging</strong>
        <ul>
            <li>Implement comprehensive error handling</li>
            <li>Set up logging system</li>
            <li>Monitor validation failures</li>
            <li>Alert on critical errors</li>
        </ul>
    </li>
</ol>

<h2>API Endpoints</h2>
<ul>
    <li><strong>Validate License</strong> - <code>POST /api/validate</code></li>
    <li><strong>Activate License</strong> - <code>POST /api/activate</code></li>
    <li><strong>Deactivate License</strong> - <code>POST /api/deactivate</code></li>
    <li><strong>Check Status</strong> - <code>GET /api/status/{license_key}</code></li>
    <li><strong>Get License Info</strong> - <code>GET /api/license/{license_key}</code></li>
</ul>

<h2>Code Examples</h2>
<h3>PHP Integration</h3>
<pre><code>&lt;?php
// Include license validator
require_once 'license-validator.php';

// Initialize validator
$validator = new LicenseValidator('YOUR_API_KEY');

// Validate license
$result = $validator->validate('LICENSE_KEY', 'example.com');

if ($result-&gt;isValid()) {
    // License is valid, proceed with application
    echo "License validated successfully!";
} else {
    // Handle invalid license
    die("Invalid license key");
}
?&gt;</code></pre>

<h3>JavaScript Integration</h3>
<pre><code>// Initialize license validator
const validator = new LicenseValidator('YOUR_API_KEY');

// Validate license
validator.validate('LICENSE_KEY', 'example.com')
    .then(result =&gt; {
        if (result.valid) {
            // License is valid
            // License validated successfully
        } else {
            // Handle invalid license
            throw new Error('Invalid license');
        }
    })
    .catch(error =&gt; {
        // Handle validation error
    });</code></pre>

<h2>Best Practices</h2>
<ul>
    <li><strong>Secure API Keys</strong> - Never expose API keys in client-side code</li>
    <li><strong>Implement Caching</strong> - Cache validation results to reduce API calls</li>
    <li><strong>Handle Offline Scenarios</strong> - Graceful degradation when API is unavailable</li>
    <li><strong>Regular Updates</strong> - Keep integration code updated</li>
    <li><strong>Monitor Usage</strong> - Track API usage and performance</li>
</ul>

<h2>Troubleshooting</h2>
<ul>
    <li><strong>Connection Issues</strong> - Check network connectivity and firewall settings</li>
    <li><strong>API Errors</strong> - Verify API credentials and endpoints</li>
    <li><strong>Domain Validation</strong> - Ensure domain format is correct</li>
    <li><strong>Rate Limiting</strong> - Implement proper rate limiting handling</li>
    <li><strong>SSL Issues</strong> - Verify SSL certificate configuration</li>
</ul>

<p>Proper license integration protects your software while providing a seamless experience for your users. Choose the integration method that best fits your development workflow and technical requirements.</p>