Add Airtable to the list of supported providers

src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationHandlers.cs

@@ -1293,15 +1293,15 @@ public static partial class OpenIddictClientWebIntegrationHandlers
                 ProviderTypes.Atlassian => (string?) context.UserinfoResponse?["account_id"],
 
                 // These providers return the user identifier as a custom "id" node:
-                ProviderTypes.Basecamp      or ProviderTypes.Box        or ProviderTypes.Dailymotion or
-                ProviderTypes.Deezer        or ProviderTypes.Discord    or ProviderTypes.Disqus      or
-                ProviderTypes.Facebook      or ProviderTypes.Gitee      or ProviderTypes.GitHub      or
-                ProviderTypes.Harvest       or ProviderTypes.Kook       or ProviderTypes.Kroger      or
-                ProviderTypes.Lichess       or ProviderTypes.Mastodon   or ProviderTypes.Meetup      or
-                ProviderTypes.Nextcloud     or ProviderTypes.Patreon    or ProviderTypes.Pipedrive   or
-                ProviderTypes.Reddit        or ProviderTypes.Smartsheet or ProviderTypes.Spotify     or
-                ProviderTypes.SubscribeStar or ProviderTypes.Todoist    or ProviderTypes.Twitter     or
-                ProviderTypes.Weibo         or ProviderTypes.Zoom
+                ProviderTypes.Airtable    or ProviderTypes.Basecamp      or ProviderTypes.Box        or
+                ProviderTypes.Dailymotion or ProviderTypes.Deezer        or ProviderTypes.Discord    or
+                ProviderTypes.Disqus      or ProviderTypes.Facebook      or ProviderTypes.Gitee      or
+                ProviderTypes.GitHub      or ProviderTypes.Harvest       or ProviderTypes.Kook       or
+                ProviderTypes.Kroger      or ProviderTypes.Lichess       or ProviderTypes.Mastodon   or
+                ProviderTypes.Meetup      or ProviderTypes.Nextcloud     or ProviderTypes.Patreon    or
+                ProviderTypes.Pipedrive   or ProviderTypes.Reddit        or ProviderTypes.Smartsheet or
+                ProviderTypes.Spotify     or ProviderTypes.SubscribeStar or ProviderTypes.Todoist    or
+                ProviderTypes.Twitter     or ProviderTypes.Weibo         or ProviderTypes.Zoom
                     => (string?) context.UserinfoResponse?["id"],
 
                 // Bitbucket returns the user identifier as a custom "uuid" node:

src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml

@@ -44,6 +44,36 @@
                  ConfigurationEndpoint="https://ims-na1.adobelogin.com/ims/.well-known/openid-configuration" />
   </Provider>
 
+  <!--
+                                          ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+                                          █ ▄▄▀█▄ ▄██ ▄▄▀█▄▄ ▄▄█ ▄▄▀██ ▄▄▀██ █████ ▄▄▄██
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+                                          █ ██ █▀ ▀██ ██ ███ ███ ██ ██ ▀▀ ██ ▀▀ ██ ▀▀▀██
+                                          ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
+  -->
+
+  <Provider Name="Airtable" Id="affd90a4-4393-483e-9862-3f2486d4b08b"
+            Documentation="https://airtable.com/developers/web/api/oauth-reference">
+    <Environment Issuer="https://airtable.com/">
+      <Configuration AuthorizationEndpoint="https://airtable.com/oauth2/v1/authorize"
+                     TokenEndpoint="https://airtable.com/oauth2/v1/token"
+                     UserinfoEndpoint="https://api.airtable.com/v0/meta/whoami">
+        <CodeChallengeMethod Value="S256" />
+
+        <GrantType Value="authorization_code" />
+        <GrantType Value="refresh_token" />
+
+        <TokenEndpointAuthMethod Value="client_secret_basic" />
+      </Configuration>
+
+      <!--
+        Note: Airtable requires requesting at least one scope for an authorization request to be considered valid.
+      -->
+
+      <Scope Name="user.email:read" Default="true" Required="false" />
+    </Environment>
+  </Provider>
+
   <!--
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