using System.Linq;
using Sandbox;

namespace NZombies;

/// <summary>
/// Console access to the Easter-egg flag pool while there is no editor UI yet — the same role the
/// wall-buy and time commands play. Lets the flag core and <see cref="EggStep"/> be exercised and
/// verified over MCP before any interactable exists to drive them.
/// </summary>
public static class EggCommands
{
	/// <summary>`nz_egg` — dump every EE flag: index, name, and whether it is active.</summary>
	[ConCmd( "nz_egg" )]
	public static void Dump()
	{
		var flags = EggFlags.Snapshot().ToList();
		Log.Info( $"[nz-egg] {flags.Count} flag(s) · General(open): {DoorLinks.Summary}" );
		foreach ( var (flag, value, index) in flags )
			Log.Info( $"[nz-egg]   #{index,-3} {(value ? "ON " : "off")}  {flag}" );
		if ( flags.Count == 0 )
			Log.Info( "[nz-egg]   (none yet — nz_egg_set <flag> 1, or load a map with EE steps)" );
	}

	/// <summary>`nz_egg_set &lt;flag&gt; [0|1]` — set an EE flag by hand, for testing.</summary>
	[ConCmd( "nz_egg_set" )]
	public static void SetFlag( string flag = "", int value = 1 )
	{
		if ( string.IsNullOrWhiteSpace( flag ) ) { Log.Warning( "[nz-egg] usage: nz_egg_set <flag> [0|1]" ); return; }
		EggFlags.Set( flag, value != 0 );
		Log.Info( $"[nz-egg] {flag} = {(value != 0 ? "ON" : "off")}  (#{EggFlags.IndexOf( flag )})" );
	}

	/// <summary>`nz_egg_reset` — clear all flag values (indices stay, as the tie-break needs).</summary>
	[ConCmd( "nz_egg_reset" )]
	public static void ResetFlags()
	{
		EggFlags.Reset();
		Log.Info( "[nz-egg] flag values cleared" );
	}

	/// <summary>
	/// `nz_egg_selftest` — build a two-step branch in code and walk it, proving availability,
	/// reward, exclusion lock-out and the General-flag bridge without needing a placed interactable.
	/// </summary>
	[ConCmd( "nz_egg_selftest" )]
	public static void SelfTest()
	{
		EggFlags.Reset();

		// Step A: available from the start, rewards flag "a" and opens General link "power".
		var a = new EggStep { Reward = { "a" }, GeneralReward = "power" };
		// Step B: needs "a", excluded once "b_locked" is set. Rewards "b".
		var b = new EggStep { Required = { "a" }, Excluded = { "b_locked" }, Reward = { "b" } };
		a.RegisterFlags(); b.RegisterFlags();

		Log.Info( $"[nz-egg] start        A avail={a.IsAvailable()} (exp True)   B avail={b.IsAvailable()} (exp False — needs 'a')" );
		a.Complete();
		Log.Info( $"[nz-egg] after A       a={EggFlags.IsSet( "a" )} (exp True)   power open={DoorLinks.IsOpen( "power" )} (exp True)   B avail={b.IsAvailable()} (exp True)" );
		EggFlags.Set( "b_locked", true );
		Log.Info( $"[nz-egg] lock B        B avail={b.IsAvailable()} (exp False — excluded)" );
		EggFlags.Set( "b_locked", false );
		b.Complete();
		Log.Info( $"[nz-egg] after B       b={EggFlags.IsSet( "b" )} (exp True)   B avail={b.IsAvailable()} (exp False — completed)" );

		Dump();
	}
}