a whole lot of preem User/Session/Auth work

src/users/setup.rs

@@ -0,0 +1,31 @@
+use rusqlite::OptionalExtension;
+use uuid::Uuid;
+
+use crate::{
+    database,
+    users::{User, UserError},
+};
+
+pub fn initialise_reserved_users_if_needed() -> Result<(), UserError> {
+    let conn = database::conn()?;
+
+    if conn
+        .prepare("SELECT handle FROM users WHERE id = ?1")?
+        .query_one((&Uuid::nil(),), |_| Ok(()))
+        .optional()?
+        .is_none()
+    {
+        User::create_systemuser()?;
+    }
+
+    if conn
+        .prepare("SELECT handle FROM users WHERE id = ?1")?
+        .query_one((&Uuid::max(),), |_| Ok(()))
+        .optional()?
+        .is_none()
+    {
+        User::create_infradmin()?;
+    }
+
+    Ok(())
+}