Create snowflake.gleam

src/discord_gleam/discord/snowflake.gleam

@@ -0,0 +1,30 @@
+import gleam/dynamic
+import gleam/int
+
+pub type Snowflake =
+  String
+
+pub fn from_dynamic(
+  dyn: dynamic.Dynamic,
+) -> Result(Snowflake, List(dynamic.DecodeError)) {
+  case dynamic.classify(dyn) {
+    "String" -> {
+      dynamic.string(dyn)
+    }
+    "Int" -> {
+      case dynamic.int(dyn) {
+        Ok(num) -> Ok(int.to_string(num))
+        Error(errors) -> Error(errors)
+      }
+    }
+    // Should be a String or Int, this should not happen
+    _ ->
+      Error([
+        dynamic.DecodeError(
+          expected: "String or Int",
+          found: dynamic.classify(dyn),
+          path: [],
+        ),
+      ])
+  }
+}