split out codegen parts

crates/dagger-codegen/src/predicates.rs

@@ -0,0 +1,30 @@
+use graphql_introspection_query::introspection_response::{self, FullType};
+
+use crate::models::Scalars;
+
+pub fn is_scalar_type(t: &FullType) -> bool {
+    if let Some(introspection_response::__TypeKind::SCALAR) = t.kind {
+        return true;
+    }
+    false
+}
+
+pub fn is_custom_scalar_type(t: &FullType) -> bool {
+    if is_scalar_type(t) {
+        // TODO: Insert scalar
+        let _ = match t.name.as_ref().map(|s| s.as_str()) {
+            Some("ID") => Scalars::ID("ID".into()),
+            Some("Int") => Scalars::Int(0),
+            Some("String") => Scalars::String("ID".into()),
+            Some("Float") => Scalars::Float(0.0),
+            Some("Boolean") => Scalars::Boolean(false),
+            Some("Date") => Scalars::Date("ID".into()),
+            Some("DateTime") => Scalars::DateTime("ID".into()),
+            Some("Time") => Scalars::Time("ID".into()),
+            Some("Decimal") => Scalars::Decimal(0.0),
+            Some(_) => return true,
+            None => return false,
+        };
+    }
+    false
+}