✨ feat(integrations): add github domain checker

docs/organization/integrations/source-code-mgmt/github/index.mdx

@@ -12,13 +12,24 @@ There are two types of GitHub integrations, so make sure you're choosing the cor
   - `https://ghe.example.com/`
 
   For these accounts, follow the '[Installing GitHub Enterprise](#installing-github-enterprise)' instructions.
+
+
+### Check Your Domain
+
+To determine which integration to use, enter your GitHub domain below:
+
+<GitHubDomainChecker />
+
+<br />
 
 <Alert>
 
 Sentry owner, manager, or admin permissions, and GitHub owner permissions are required to install this integration.
 
 </Alert>
 
+## Installing GitHub
+
 1. Navigate to **Settings > Integrations > [GitHub](https://sentry.io/orgredirect/organizations/:orgslug/settings/integrations/github)**.
 
    ![Install GitHub integration](./img/github-install-page.png)

src/components/githubDomainChecker.tsx

@@ -0,0 +1,140 @@
+'use client';
+
+import {useState} from 'react';
+
+interface GitHubDomainCheckerProps {
+  id?: string;
+}
+
+export function GitHubDomainChecker({id}: GitHubDomainCheckerProps = {}) {
+  const [domain, setDomain] = useState('');
+  const [isValidDomain, setIsValidDomain] = useState(false);
+
+  // Safe function to check if domain is github.com or its subdomain
+  const isValidGitHubDomain = (input_domain: string): boolean => {
+    try {
+      const url = new URL(
+        input_domain.startsWith('http') ? input_domain : `https://${input_domain}`
+      );
+      const hostname = url.hostname.toLowerCase();
+
+      // Exact match for github.com or valid subdomain (like gist.github.com)
+      return hostname === 'github.com' || hostname.endsWith('.github.com');
+    } catch {
+      return false;
+    }
+  };
+
+  // Safe function to check if it's an enterprise GitHub domain
+  const isValidEnterpriseDomain = (input_domain: string): boolean => {
+    try {
+      const url = new URL(
+        input_domain.startsWith('http') ? input_domain : `https://${input_domain}`
+      );
+      const hostname = url.hostname.toLowerCase();
+
+      // Must be a valid domain with TLD, but not github.com
+      const domainPattern = /^[\w\-\.]+\.[\w]{2,}$/;
+      return (
+        domainPattern.test(hostname) &&
+        !hostname.endsWith('.github.com') &&
+        hostname !== 'github.com'
+      );
+    } catch {
+      return false;
+    }
+  };
+
+  const isGitHubCom = (() => {
+    const trimmedDomain = domain.toLowerCase().trim();
+    if (!trimmedDomain) return false;
+
+    return isValidGitHubDomain(trimmedDomain);
+  })();
+
+  const hasInput = domain.trim().length > 0;
+
+  // Validate domain format
+  const validateDomain = (inputDomain: string) => {
+    const trimmedDomain = inputDomain.trim();
+    if (!trimmedDomain) {
+      setIsValidDomain(false);
+      return;
+    }
+
+    // Check if it's a valid GitHub.com domain or subdomain
+    if (isValidGitHubDomain(trimmedDomain)) {
+      setIsValidDomain(true);
+      return;
+    }
+
+    // For enterprise, validate as proper domain
+    if (isValidEnterpriseDomain(trimmedDomain)) {
+      setIsValidDomain(true);
+      return;
+    }
+
+    setIsValidDomain(false);
+  };
+
+  const handleDomainChange = ev => {
+    const newDomain = ev.target.value;
+    setDomain(newDomain);
+    validateDomain(newDomain);
+  };
+
+  // Improved input styling with dark mode support
+  const inputClassName =
+    'form-input w-full rounded-md border-[1.5px] focus:ring-2 focus:ring-accent-purple/20 border-gray-200 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100 dark:placeholder-gray-400';
+
+  // Use provided id or generate a fallback
+  const inputId = id || `gh-domain-${Date.now()}`;
+
+  return (
+    <div className="space-y-4 p-6 border border-gray-100 dark:border-gray-700 rounded">
+      <div className="flex w-full">
+        <div className="flex items-center min-w-[16ch] px-4">
+          <label htmlFor={inputId} className="text-nowrap">
+            GitHub Domain
+          </label>
+        </div>
+        <input
+          id={inputId}
+          value={domain}
+          placeholder="https://github.com or https://ghe.example.com"
+          className={inputClassName}
+          onChange={handleDomainChange}
+        />
+      </div>
+
+      {hasInput && (
+        <div className="mt-4 p-4 rounded-md border dark:border-gray-600">
+          {isValidDomain ? (
+            <div>
+              <div className="text-sm font-medium mb-2">Recommended Installation:</div>
+              {isGitHubCom ? (
+                <div className="text-green-700 bg-green-50 dark:text-green-300 dark:bg-green-900/30 p-3 rounded-md">
+                  <div className="mb-2">
+                    <strong>GitHub</strong> - Use the standard GitHub integration for
+                    github.com
+                  </div>
+                </div>
+              ) : (
+                <div className="text-blue-700 bg-blue-50 dark:text-blue-300 dark:bg-blue-900/30 p-3 rounded-md">
+                  <div className="mb-2">
+                    <strong>GitHub Enterprise</strong> - Use GitHub Enterprise integration
+                    for your domain
+                  </div>
+                </div>
+              )}
+            </div>
+          ) : (
+            <div className="text-red-700 bg-red-50 dark:text-red-300 dark:bg-red-900/30 p-3 rounded-md">
+              <strong>Invalid Domain</strong> - Please enter a valid GitHub domain or URL
+            </div>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}

src/mdxComponents.ts

@@ -13,6 +13,7 @@ import {DefinitionList} from './components/definitionList';
 import {DevDocsCardGrid} from './components/devDocsCardGrid';
 import DocImage from './components/docImage';
 import {Expandable} from './components/expandable';
+import {GitHubDomainChecker} from './components/githubDomainChecker';
 import {GuideGrid} from './components/guideGrid';
 import {JsBundleList} from './components/jsBundleList';
 import {LambdaLayerDetail} from './components/lambdaLayerDetail';
@@ -60,6 +61,7 @@ export function mdxComponents(
     SdkApi,
     TableOfContents,
     CreateGitHubAppForm,
+    GitHubDomainChecker,
     ConfigValue,
     DefinitionList,
     Expandable,