include library.create;
include library.ai_lib;
include library.city;
include library.utils;

const boolean TRAINERS_OFF = true;

//------------------------------------------------
// OnInitialize
//------------------------------------------------

trigger OnInitialize()
{
	if ( TRAINERS_OFF )
	{
		return SCRIPT_CONTINUE;
	}

	string spawn = getStringObjVar( self, "spawns" );
	if ( spawn == null )
		return SCRIPT_OVERRIDE;

	if ( getIntObjVar( self, "city_id" ) > 0 )
	 	city.validateSpecialStructure( self );

	messageTo( self, "spawnTrainer", null, 1.f, false );

	return SCRIPT_CONTINUE;
}

//------------------------------------------------
// OnDestroy
//------------------------------------------------

trigger OnDestroy()
{
	if ( getIntObjVar( self, "city_id" ) > 0 )
	{
		obj_id trainer = utils.getObjIdScriptVar( self, "trainer" );
		destroyObject( trainer );
		city.removeSkillTrainer( self );
	}

	return SCRIPT_CONTINUE;
}

//------------------------------------------------
// OnUnloadedFromMemory
//
// This will prevent duplicate skill trainers by unloading the trainers when the spawner unloads
// A code solution is still in progress, but should give us what we need. - cmayer
//------------------------------------------------

trigger OnUnloadedFromMemory()
{
	if ( getIntObjVar( self, "city_id" ) > 0 )
	{
		obj_id trainer = utils.getObjIdScriptVar( self, "trainer" );
		destroyObject( trainer );
		utils.removeScriptVar( self, "trainer" );
	}
	return SCRIPT_CONTINUE;
}

//------------------------------------------------
// spawnTrainer
//------------------------------------------------

messageHandler spawnTrainer()
{
	if ( utils.hasScriptVar( self, "trainer" ) )
		return SCRIPT_CONTINUE;

	string spawn = getStringObjVar( self, "spawns" );
	if ( spawn == null )
		return SCRIPT_OVERRIDE;
	if(!isTrainerAllowed(spawn))
	{
		return SCRIPT_CONTINUE;
	}
	obj_id trainer = create.object( spawn, getLocation(self) );
	if ( trainer == null || !isIdValid( trainer ) )
	{
		obj_id creator = getObjIdObjVar( self, "creator" );
		sendSystemMessage( creator, new string_id( "city/city", "st_fail" ) );
		destroyObject( self );
		return SCRIPT_CONTINUE;
	}
	setInvulnerable( trainer, true );
	setCreatureStatic( trainer, true );
	ai_lib.setDefaultCalmBehavior( trainer, ai_lib.BEHAVIOR_SENTINEL );

	if ( getIntObjVar( self, "city_id" ) > 0 )
	{
		setYaw( trainer, getYaw( self ) );
		setObjVar( trainer, "spawner", self );
		utils.setScriptVar( self, "trainer", trainer );
		attachScript( trainer, "npc.skillteacher.civic_skillteacher" );
		//setName( self, spawn );
		string spawn_r = "st" + spawn.substring( spawn.indexOf('_'), spawn.length() );
		//setName( self, new string_id( "city/city", spawn_r ) );
	}

	return SCRIPT_CONTINUE;
}

//------------------------------------------------
// requestDestroy
//------------------------------------------------

messageHandler requestDestroy()
{
	obj_id trainer = utils.getObjIdScriptVar( self, "trainer" );
	destroyObject( trainer );
	destroyObject( self );
	return SCRIPT_CONTINUE;
}

boolean isTrainerAllowed(string strTrainer)
{
	if(utils.checkConfigFlag("ScriptFlags","noEliteTrainers"))
	{
		string[] strAllowedTrainers = {
						"trainer_artisan",
						"trainer_brawler",
						"trainer_entertainer",
						"trainer_marksman",
						"trainer_medic",
						"trainer_scout"


						};
		for(int intI = 0; intI < strAllowedTrainers.length; intI++)
		{
			string strTest = strAllowedTrainers[intI]; // just in case that fucking preprocessor bug hits
			if(strTrainer.equals(strTest))
			{
				return true;
			}

		}
		return false;
	}
	return true;
}