using Sandbox;
using System.Linq;

namespace NZombies;

/// <summary>
/// The map's own sky: a <see cref="SkyBox2D"/> placed in its map scene (Laketown's aurora,
/// 2026-10-02). A map without one shows the camera's clear colour above it.
///
/// ⚠️ LIVE ONLY, NOTHING IS SAVED. The sky belongs to the map scene, so a change that should stay
/// is made there; this exists so the sky can be judged, and tuned, in play.
/// </summary>
public static class MapSky
{
	/// <summary>
	/// `nz_sky` — the skies on this map. `nz_sky off|on`; `nz_sky bright &lt;x&gt;` sets the tint
	/// (1 = as authored); `nz_sky turn &lt;degrees&gt;` yaws it, since the sky follows its object's
	/// rotation; `nz_sky light 1|0` lets it light the map as well (SkyIndirectLighting: a
	/// world-sized cubemap of the sky, which shiny surfaces and water reflect).
	/// </summary>
	[ConCmd( "nz_sky" )]
	public static void Sky( string part = "", float value = float.NaN )
	{
		// ⚠️ DISABLED ONES TOO: `nz_sky off` disables the component, and `on` has to find it again.
		var skies = Game.ActiveScene?.Components
			.GetAll<SkyBox2D>( FindMode.EverythingInSelfAndDescendants ).ToList();

		if ( skies is null || skies.Count == 0 )
		{
			Log.Info( "[nz-sky] no SkyBox2D on this map - the sky is the camera's clear colour" );
			return;
		}

		var verb = part.ToLowerInvariant();

		if ( ( verb == "bright" || verb == "turn" || verb == "light" ) && float.IsNaN( value ) )
		{
			Log.Warning( $"[nz-sky] nz_sky {verb} <number>" );
			return;
		}

		foreach ( var s in skies )
		{
			switch ( verb )
			{
				case "": break;
				case "on": s.Enabled = true; break;
				case "off": s.Enabled = false; break;
				case "bright": s.Tint = new Color( value, value, value, 1f ); break;
				case "turn": s.WorldRotation = Rotation.FromYaw( value ); break;
				case "light": s.SkyIndirectLighting = value != 0f; break;
				default:
					Log.Warning( $"[nz-sky] no such part '{part}' - on, off, bright, turn, light" );
					return;
			}

			// ⚠️ "material none" IS A REFUSED MATERIAL. SkyBox2D silently drops one whose shader is
			// not a sky shader, or that failed to load, and then draws nothing.
			Log.Info( $"[nz-sky] '{s.GameObject.Name}'  {( s.Enabled ? "on" : "OFF" )}"
				+ $"  material {s.SkyMaterial?.Name ?? "none"}"
				+ $"  tint {s.Tint.r:0.##},{s.Tint.g:0.##},{s.Tint.b:0.##}"
				+ $"  yaw {s.WorldRotation.Yaw():0}"
				+ ( s.SkyIndirectLighting ? "  lights the map too" : "  look only, the lighting is the map's" ) );
		}

		if ( verb != "" )
			Log.Info( "[nz-sky] live only - the map scene keeps its own sky" );
	}
}