import Testing
@testable import PediFoods

@Test("show sets current with the given title, style, and persistence flag")
@MainActor
func showSetsCurrentMessage() {
    let center = SnackbarCenter()
    center.show(title: "Saved!", style: .success, isPersistent: false)
    #expect(center.current?.title == "Saved!")
    #expect(center.current?.style == .success)
    #expect(center.current?.isPersistent == false)
}

@Test("handleTap dismisses a non-persistent message and runs its action")
@MainActor
func handleTapDismissesAndRunsAction() {
    let center = SnackbarCenter()
    var actionRan = false
    center.show(title: "Undo?", isPersistent: false, action: { actionRan = true })
    center.handleTap()
    #expect(center.current == nil)
    #expect(actionRan)
}

@Test("handleTap does nothing for a persistent message")
@MainActor
func handleTapIgnoresPersistentMessage() {
    let center = SnackbarCenter()
    var actionRan = false
    center.show(title: "Uploading…", isPersistent: true, action: { actionRan = true })
    center.handleTap()
    #expect(center.current != nil)
    #expect(actionRan == false)
}

@Test("dismiss(animated:) clears the current message unconditionally")
@MainActor
func dismissClearsCurrentMessage() {
    let center = SnackbarCenter()
    center.show(title: "Hello", isPersistent: true)
    center.dismiss(animated: false)
    #expect(center.current == nil)
}

@Test("dismissPersistent only clears the message when it's actually persistent")
@MainActor
func dismissPersistentOnlyClearsPersistentMessages() {
    let center = SnackbarCenter()
    center.show(title: "Transient", isPersistent: false)
    center.dismissPersistent()
    #expect(center.current != nil)

    center.show(title: "Persistent", isPersistent: true)
    center.dismissPersistent()
    #expect(center.current == nil)
}

@Test("show replaces a currently-displayed message with the new one")
@MainActor
func showReplacesCurrentMessage() {
    let center = SnackbarCenter()
    center.show(title: "First", isPersistent: true)
    center.show(title: "Second", isPersistent: true)
    #expect(center.current?.title == "Second")
}