Moved broadly useful helper functions upstream into feedkit

sinks/helpers.go

@@ -0,0 +1,27 @@
+package sinks
+
+import (
+	"fmt"
+	"strings"
+
+	"gitea.maximumdirect.net/ejr/feedkit/config"
+)
+
+// RegisterPostgresSchemaForConfiguredSinks registers one Postgres schema for each
+// configured sink using driver=postgres.
+func RegisterPostgresSchemaForConfiguredSinks(cfg *config.Config, schema PostgresSchema) error {
+	if cfg == nil {
+		return fmt.Errorf("register postgres schemas: config is nil")
+	}
+
+	for i, sk := range cfg.Sinks {
+		if !strings.EqualFold(strings.TrimSpace(sk.Driver), "postgres") {
+			continue
+		}
+		if err := RegisterPostgresSchema(sk.Name, schema); err != nil {
+			return fmt.Errorf("register postgres schema for sinks[%d] name=%q: %w", i, sk.Name, err)
+		}
+	}
+
+	return nil
+}