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 {

    // 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()
        ])
    }

}