import XCTest
@testable import VniDrop

/// Ports `preferences/AppPreferencesRepositoryTest.kt` — values persist to the
/// backing store and reload identically.
@MainActor
final class AppPreferencesRepositoryTests: XCTestCase {

	private func defaults() -> UserDefaults { UserDefaults(suiteName: "vnidrop.prefs.\(UUID().uuidString)")! }
	private func fallback() -> AppPreferencesDefaults {
		AppPreferencesDefaults(
			username: "Default",
			receiveFolder: ReceiveFolder(kind: .fileSystemPath, value: "/tmp", displayName: "Downloads"),
			themeMode: .system
		)
	}

	func testFallbacksWhenEmpty() {
		let repo = AppPreferencesRepository(defaults: defaults(), fallback: fallback())
		XCTAssertEqual(repo.preferences.username, "Default")
		XCTAssertEqual(repo.preferences.themeMode, .system)
	}

	func testValuesPersistAndReload() {
		let store = defaults()
		let fb = fallback()
		let repo = AppPreferencesRepository(defaults: store, fallback: fb)
		repo.setUsername("Bob")
		repo.setThemeMode(.dark)
		repo.setReceiveFolder(ReceiveFolder(kind: .iosSecurityScopedUrl, value: "file:///x", displayName: "Custom"))

		// A fresh repository over the same store reflects the persisted values.
		let reloaded = AppPreferencesRepository(defaults: store, fallback: fb)
		XCTAssertEqual(reloaded.preferences.username, "Bob")
		XCTAssertEqual(reloaded.preferences.themeMode, .dark)
		XCTAssertEqual(reloaded.preferences.receiveFolder.displayName, "Custom")
		XCTAssertEqual(reloaded.preferences.receiveFolder.kind, .iosSecurityScopedUrl)
	}

	func testResetReceiveFolderRestoresFallback() {
		let store = defaults()
		let fb = fallback()
		let repo = AppPreferencesRepository(defaults: store, fallback: fb)
		repo.setReceiveFolder(ReceiveFolder(kind: .fileSystemPath, value: "/custom", displayName: "Custom"))
		repo.resetReceiveFolder()
		XCTAssertEqual(repo.preferences.receiveFolder.value, "/tmp")
	}
}