using Sandbox;

namespace NZombies;

/// <summary>
/// The name of the powerup you just took, for the banner to render.
///
/// ⚠️ A STATIC, for the same reason `LobbyState` and `ToolPanelState` are: razor
/// components are GENERATED types and a plain .cs file cannot reference one, so
/// `Powerup.Collect` has no way to talk to the panel directly. This is the seam.
/// </summary>
public static class PowerupBannerState
{
	/// <summary>What to show. Empty when nothing is showing.</summary>
	public static string Text { get; private set; } = "";

	/// <summary>How long the banner stays up.</summary>
	public static float Duration { get; set; } = 2.5f;

	static RealTimeSince _since;

	/// <summary>Seconds since it was raised.</summary>
	public static float Elapsed => _since;

	/// <summary>Is a banner currently up?</summary>
	public static bool Showing => !string.IsNullOrEmpty( Text ) && _since < Duration;

	/// <summary>
	/// Raise the banner.
	///
	/// ⚠️ RESTARTS the timer if one is already up, rather than queueing. Two powerups
	/// collected together is a real case — a Nuke clears the room onto a Max Ammo —
	/// and a queue would show the second one after the first had finished, by which
	/// point the player has stopped looking.
	/// </summary>
	public static void Show( string text )
	{
		Text = text ?? "";
		_since = 0f;
	}

	/// <summary>Human-readable name for a kind. "MaxAmmo" is not what to put on screen.</summary>
	public static string NameFor( PowerupKind kind ) => kind switch
	{
		PowerupKind.MaxAmmo => "MAX AMMO",
		PowerupKind.InstaKill => "INSTA-KILL",
		PowerupKind.DoublePoints => "DOUBLE POINTS",
		PowerupKind.Nuke => "NUKE",
		PowerupKind.Carpenter => "CARPENTER",
		PowerupKind.FireSale => "FIRE SALE",
		PowerupKind.DeathMachine => "DEATH MACHINE",
		_ => kind.ToString().ToUpper(),
	};

	/// <summary>Show the banner from the console: `nz_banner &lt;text&gt;`.</summary>
	[ConCmd( "nz_banner" )]
	public static void Cmd( string text = "MAX AMMO" )
	{
		Show( text );
		Log.Info( $"[nz] banner: '{Text}' for {Duration:0.#}s" );
	}
}