Add Meetup to the list of supported providers

src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationHandlers.Userinfo.cs

@@ -69,8 +69,9 @@ public static partial class OpenIddictClientWebIntegrationHandlers
 
                 request.Method = context.Registration.ProviderType switch
                 {
-                    // SubscribeStar's userinfo implementation is based on GraphQL, which requires using POST.
-                    ProviderTypes.SubscribeStar => HttpMethod.Post,
+                    // The userinfo endpoints exposed by these providers
+                    // are based on GraphQL, which requires using POST:
+                    ProviderTypes.Meetup or ProviderTypes.SubscribeStar => HttpMethod.Post,
 
                     _ => request.Method
                 };
@@ -266,10 +267,10 @@ public static partial class OpenIddictClientWebIntegrationHandlers
 
                 request.Content = context.Registration.ProviderType switch
                 {
-                    // SubscribeStar's userinfo implementation is based on GraphQL,
-                    // which requires sending the request parameters as a JSON payload.
-                    ProviderTypes.SubscribeStar => JsonContent.Create(context.Transaction.Request,
-                        new MediaTypeHeaderValue(MediaTypes.Json)
+                    // The userinfo endpoints exposed by these providers are based on GraphQL,
+                    // which requires sending the request parameters as a JSON payload:
+                    ProviderTypes.Meetup or ProviderTypes.SubscribeStar
+                        => JsonContent.Create(context.Transaction.Request, new MediaTypeHeaderValue(MediaTypes.Json)
                         {
                             CharSet = Charsets.Utf8
                         }),
@@ -398,6 +399,10 @@ public static partial class OpenIddictClientWebIntegrationHandlers
                         => new(context.Response["data"]?.GetNamedParameters() ??
                         throw new InvalidOperationException(SR.FormatID0334("data"))),
 
+                    // Meetup returns a nested "self" object that is itself nested in a GraphQL "data" node.
+                    ProviderTypes.Meetup => new(context.Response["data"]?["self"]?.GetNamedParameters() ??
+                        throw new InvalidOperationException(SR.FormatID0334("data/self"))),
+
                     // Nextcloud returns a nested "data" object that is itself nested in a "ocs" node.
                     ProviderTypes.Nextcloud => new(context.Response["ocs"]?["data"]?.GetNamedParameters() ??
                         throw new InvalidOperationException(SR.FormatID0334("ocs/data"))),

src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationHandlers.cs

@@ -885,6 +885,15 @@ public static partial class OpenIddictClientWebIntegrationHandlers
                 context.UserinfoRequest["fields"] = string.Join(",", settings.Fields);
             }
 
+            // Meetup's userinfo endpoint is a GraphQL implementation that requires
+            // sending a proper "query" parameter containing the requested user details.
+            else if (context.Registration.ProviderType is ProviderTypes.Meetup)
+            {
+                var settings = context.Registration.GetMeetupSettings();
+
+                context.UserinfoRequest["query"] = $"query {{ self {{ {string.Join(" ", settings.UserFields)} }} }}";
+            }
+
             // Patreon limits the number of fields returned by the userinfo endpoint
             // but allows returning additional information using special parameters that
             // determine what fields will be returned as part of the userinfo response.
@@ -1118,12 +1127,6 @@ public static partial class OpenIddictClientWebIntegrationHandlers
                          context.UserinfoResponse?.HasParameter("last_name")  is true
                     => $"{(string?) context.UserinfoResponse?["first_name"]} {(string?) context.UserinfoResponse?["last_name"]}",
 
-                // These providers return the username as a custom "name" node:
-                ProviderTypes.Deezer or ProviderTypes.Facebook      or ProviderTypes.GitHub  or
-                ProviderTypes.Reddit or ProviderTypes.SubscribeStar or ProviderTypes.Twitter or
-                ProviderTypes.Vimeo
-                    => (string?) context.UserinfoResponse?["name"],
-
                 // FitBit returns the username as a custom "displayName" node:
                 ProviderTypes.Fitbit => (string?) context.UserinfoResponse?["displayName"],
 
@@ -1189,12 +1192,13 @@ public static partial class OpenIddictClientWebIntegrationHandlers
                     => (string?) context.UserinfoResponse?["username"],
 
                 // These providers return the user identifier as a custom "id" node:
-                ProviderTypes.Basecamp      or ProviderTypes.Dailymotion or ProviderTypes.Deezer   or
-                ProviderTypes.Discord       or ProviderTypes.Disqus      or ProviderTypes.Facebook or
-                ProviderTypes.GitHub        or ProviderTypes.Harvest     or ProviderTypes.Kroger   or
-                ProviderTypes.Lichess       or ProviderTypes.Nextcloud   or ProviderTypes.Patreon  or
-                ProviderTypes.Reddit        or ProviderTypes.Smartsheet  or ProviderTypes.Spotify  or
-                ProviderTypes.SubscribeStar or ProviderTypes.Twitter     or ProviderTypes.Zoom
+                ProviderTypes.Basecamp or ProviderTypes.Dailymotion   or ProviderTypes.Deezer     or
+                ProviderTypes.Discord  or ProviderTypes.Disqus        or ProviderTypes.Facebook   or
+                ProviderTypes.GitHub   or ProviderTypes.Harvest       or ProviderTypes.Kroger     or
+                ProviderTypes.Lichess  or ProviderTypes.Meetup        or ProviderTypes.Nextcloud  or
+                ProviderTypes.Patreon  or ProviderTypes.Reddit        or ProviderTypes.Smartsheet or
+                ProviderTypes.Spotify  or ProviderTypes.SubscribeStar or ProviderTypes.Twitter    or
+                ProviderTypes.Zoom
                     => (string?) context.UserinfoResponse?["id"],
 
                 // Bitbucket returns the user identifier as a custom "uuid" node:

src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml

@@ -779,6 +779,44 @@
     </Environment>
   </Provider>
 
+  <!--
+                                            ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+                                            ██ ▄▀▄ ██ ▄▄▄██ ▄▄▄█▄▄ ▄▄██ ██ ██ ▄▄ ██
+                                            ██ █ █ ██ ▄▄▄██ ▄▄▄███ ████ ██ ██ ▀▀ ██
+                                            ██ ███ ██ ▀▀▀██ ▀▀▀███ ████▄▀▀▄██ █████
+                                            ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
+  -->
+
+  <Provider Name="Meetup" Id="3eb9d2c2-e999-41f3-905e-07b97f054e8e"
+            Documentation="https://www.meetup.com/api/authentication/#p01-using-oauth2-section">
+    <Environment Issuer="https://www.meetup.com/">
+      <Configuration AuthorizationEndpoint="https://secure.meetup.com/oauth2/authorize"
+                     TokenEndpoint="https://secure.meetup.com/oauth2/access"
+                     UserinfoEndpoint="https://api.meetup.com/gql">
+        <GrantType Value="authorization_code" />
+        <GrantType Value="refresh_token" />
+      </Configuration>
+    </Environment>
+
+    <Setting PropertyName="UserFields" ParameterName="fields" Collection="true" Type="String"
+             Description="The list of user fields to expand from the GraphQL endpoint (by default, most basic fields are requested)">
+      <Item Value="birthday"        Default="true" Required="false" />
+      <Item Value="city"            Default="true" Required="false" />
+      <Item Value="country"         Default="true" Required="false" />
+      <Item Value="email"           Default="true" Required="false" />
+      <Item Value="gender"          Default="true" Required="false" />
+      <Item Value="id"              Default="true" Required="false" />
+      <Item Value="memberUrl"       Default="true" Required="false" />
+      <Item Value="name"            Default="true" Required="false" />
+      <Item Value="preferredLocale" Default="true" Required="false" />
+      <Item Value="state"           Default="true" Required="false" />
+      <Item Value="status"          Default="true" Required="false" />
+      <Item Value="timezone"        Default="true" Required="false" />
+      <Item Value="username"        Default="true" Required="false" />
+      <Item Value="zip"             Default="true" Required="false" />
+    </Setting>
+  </Provider>
+
   <!--
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