1 files changed, 52 insertions, 0 deletions
diff --git a/src/ids.rs b/src/ids.rs
new file mode 100644
index 0000000..6febe63
--- /dev/null
+++ b/src/ids.rs
@@ -0,0 +1,52 @@
+use std::fmt::Display;
+
+pub trait Identifier: Display {
+    fn value(&self) -> &str;
+}
+
+/// Meant to be a helpful trait allowing anything that can be
+/// identified by the type specified in `ById`.
+pub trait AsIdentifier<ById: Identifier> {
+    fn as_id(&self) -> &ById;
+}
+
+impl<T> AsIdentifier<T> for T
+where
+    T: Identifier,
+{
+    fn as_id(&self) -> &T {
+        &self
+    }
+}
+
+macro_rules! identifer {
+    ($name:ident) => {
+        #[derive(serde::Serialize, serde::Deserialize, Debug, Eq, PartialEq, Hash, Clone)]
+        #[serde(transparent)]
+        pub struct $name(String);
+
+        impl Identifier for $name {
+            fn value(&self) -> &str {
+                &self.0
+            }
+        }
+
+        impl std::fmt::Display for $name {
+            fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+                self.0.fmt(f)
+            }
+        }
+    };
+}
+
+identifer!(DatabaseId);
+identifer!(PageId);
+identifer!(BlockId);
+identifer!(UserId);
+identifer!(PropertyId);
+
+impl From<PageId> for BlockId {
+    fn from(page_id: PageId) -> Self {
+        BlockId(page_id.0)
+    }
+}