Initial commit.

Packages/Persistence/Sources/Public/Methods/PrepareDB.swift

@@ -0,0 +1,29 @@
+import HummingbirdFluent
+
+/// A registrar declaring every migration against a `Fluent` service.
+///
+/// Built once around the application's `Fluent` service and called as a function — `await migrate()` — during startup, before the migrations are
+/// applied.
+public struct PrepareDB: Sendable {
+
+    // MARK: Initializers
+
+    /// Creates a registrar for the migrations for a `Fluent` service.
+    public init() {}
+
+    // MARK: Methods
+
+    /// Registers every migration against the `Fluent` service, in order.
+    ///
+    /// This is the single place migrations are declared: add each new migration here, in the order it must run (migrations are applied in registration order
+    /// and are append-only). Registering does not apply them — the caller runs `fluent.migrate()` (or the executable's migrate-and-exit mode) to do
+    /// that.
+    public func callAsFunction(
+        for fluent: Fluent
+    ) async {
+        await fluent.migrations.add([
+            CreateExampleRecord()
+        ])
+    }
+
+}