Add PostHog API-key connector settings

Marshal the region (us/eu) for PostHog Cloud and the instance URL
for PostHog Self-Hosted from the create-connector input, validating
each, and add the matching GraphQL inputs and the POSTHOG_SELF_HOSTED
enum value.

Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>

pkg/server/api/console/v1/connector_settings.go

@@ -93,11 +93,47 @@ func apiKeyConnectorSettings(input types.CreateAPIKeyConnectorInput) (json.RawMe
 		}
 
 		return json.Marshal(&coredata.MetabaseConnectorSettings{InstanceURL: *input.MetabaseInstanceURL})
+	case coredata.ConnectorProviderPostHog:
+		if input.PosthogRegion == nil || *input.PosthogRegion == "" {
+			return nil, fmt.Errorf("cannot create posthog connector: posthogRegion is required")
+		}
+
+		baseURL, ok := posthogRegionBaseURL(*input.PosthogRegion)
+		if !ok {
+			return nil, fmt.Errorf("cannot create posthog connector: posthogRegion must be US or EU")
+		}
+
+		return json.Marshal(&coredata.PostHogConnectorSettings{BaseURL: baseURL})
+	case coredata.ConnectorProviderPostHogSelfHosted:
+		if input.PosthogInstanceURL == nil || *input.PosthogInstanceURL == "" {
+			return nil, fmt.Errorf("cannot create posthog self-hosted connector: posthogInstanceUrl is required")
+		}
+
+		u, err := url.Parse(*input.PosthogInstanceURL)
+		if err != nil || (u.Scheme != "http" && u.Scheme != "https") || u.Host == "" {
+			return nil, fmt.Errorf("cannot create posthog self-hosted connector: posthogInstanceUrl must be an http(s) URL")
+		}
+
+		return json.Marshal(&coredata.PostHogConnectorSettings{BaseURL: *input.PosthogInstanceURL})
 	}
 
 	return nil, nil
 }
 
+// posthogRegionBaseURL maps a PostHog Cloud region selector to its data-API
+// base host. Only US and EU clouds exist; self-hosted instances use the
+// dedicated POSTHOG_SELF_HOSTED provider with a full instance URL instead.
+func posthogRegionBaseURL(region string) (string, bool) {
+	switch region {
+	case "US", "us":
+		return "https://us.posthog.com", true
+	case "EU", "eu":
+		return "https://eu.posthog.com", true
+	default:
+		return "", false
+	}
+}
+
 // clientCredentialsConnectorSettings marshals the provider-specific
 // extra settings for a client-credentials connector. See
 // apiKeyConnectorSettings for the error contract.

pkg/server/api/console/v1/graphql/connector.graphql

@@ -23,6 +23,10 @@ enum ConnectorProvider
         @goEnum(value: "go.probo.inc/probo/pkg/coredata.ConnectorProviderCloudflare")
     OPENAI @goEnum(value: "go.probo.inc/probo/pkg/coredata.ConnectorProviderOpenAI")
     POSTHOG @goEnum(value: "go.probo.inc/probo/pkg/coredata.ConnectorProviderPostHog")
+    POSTHOG_SELF_HOSTED
+        @goEnum(
+            value: "go.probo.inc/probo/pkg/coredata.ConnectorProviderPostHogSelfHosted"
+        )
     SENTRY @goEnum(value: "go.probo.inc/probo/pkg/coredata.ConnectorProviderSentry")
     SUPABASE
         @goEnum(value: "go.probo.inc/probo/pkg/coredata.ConnectorProviderSupabase")
@@ -129,6 +133,8 @@ input CreateAPIKeyConnectorInput {
     grafanaBaseUrl: String
     onePasswordScimBridgeUrl: String
     metabaseInstanceUrl: String
+    posthogRegion: String
+    posthogInstanceUrl: String
 }
 
 type CreateAPIKeyConnectorPayload {