using BspImport.Decompiler.Formats.Readers;

namespace BspImport.Decompiler.Formats.Descriptors;

/// <summary>
/// Left 4 Dead BSP descriptor.
/// Uses standard lump header layout.
/// </summary>
public sealed class Left4DeadBspFormatDescriptor : IBspFormatDescriptor
{
	private static readonly HashSet<string> Signatures = new( StringComparer.OrdinalIgnoreCase )
	{
		"env_outtro_stats",
		"env_player_blocker",
		"env_rock_launcher",
		"env_tonemap_controller_ghost",
		"env_tonemap_controller_infected",
		"env_weaponfire",
		"filter_activator_infected_class",
		"func_button_timed",
		"func_elevator",
		"func_nav_avoidance_obstacle",
		"func_nav_blocker",
		"func_nav_stairs_toggle",
		"func_orator",
		"func_playerinfected_clip",
		"func_ragdoll_fader",
		"func_spawn_volume",
		"info_director",
		"info_elevator_floor",
		"info_goal_infected_chase",
		"info_map_parameters_versus",
		"info_survivor_position",
		"info_survivor_rescue",
		"info_zombie_spawn",
		"logic_versus_random",
		"point_deathfall_camera",
		"point_viewcontrol_survivor",
		"prop_car_alarm",
		"prop_car_glass",
		"prop_door_rotating_checkpoint",
		"prop_fuel_barrel",
		"prop_glowing_object",
		"prop_health_cabinet",
		"prop_minigun",
		"prop_mounted_machine_gun",
		"trigger_auto_crouch",
		"trigger_escape",
		"trigger_finale",
		"trigger_finale_dlc3",
		"trigger_hurt_ghost",
		"weapon_ammo_spawn",
		"weapon_autoshotgun_spawn",
		"weapon_first_aid_kit_spawn",
		"weapon_hunting_rifle_spawn",
		"weapon_molotov_spawn",
		"weapon_pain_pills_spawn",
		"weapon_pipe_bomb_spawn",
		"weapon_pistol_spawn",
		"weapon_pumpshotgun_spawn",
		"weapon_rifle_spawn",
		"weapon_smg_spawn"
	};

	public BspGameFormat GameFormat => BspGameFormat.Left4Dead;
	public IReadOnlySet<int> SupportedVersions { get; } = new HashSet<int> { 20 };
	public string DisplayName => "Left 4 Dead";
	public int SpecificityScore => 100;

	public LumpHeaderLayout LumpHeaderLayout => LumpHeaderLayout.Standard;
	public BrushSideLayout BrushSideLayout => BrushSideLayout.Standard;
	public StaticPropLayout StaticPropLayout => StaticPropLayout.V8;

	public IBspStructReaders GetStructReaders( int bspVersion ) => new StandardBspStructReaders();

	public bool MatchesMapName( string mapName )
	{
		return !string.IsNullOrEmpty( mapName ) && mapName.StartsWith( "l4d_", StringComparison.OrdinalIgnoreCase );
	}

	public bool MatchesEntities( IReadOnlyList<string> entityClassNames )
	{
		return Signatures.Overlaps( entityClassNames );
	}
}