package electrosphere.entity.state.equip;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.List;

import org.joml.Vector3d;

import annotations.IntegrationTest;
import electrosphere.engine.Globals;
import electrosphere.entity.Entity;
import electrosphere.entity.state.inventory.InventoryUtils;
import electrosphere.entity.types.attach.AttachUtils;
import electrosphere.entity.types.creature.CreatureTemplate;
import electrosphere.entity.types.creature.CreatureUtils;
import electrosphere.entity.types.item.ItemUtils;
import template.EntityTestTemplate;
import testutils.TestEngineUtils;

/**
 * Server equip state tests
 */
public class ServerEquipStateTests extends EntityTestTemplate {
    
    /**
     * Try equipping an item
     */
    @IntegrationTest
    public void testEquipItem(){
        TestEngineUtils.simulateFrames(1);
        //spawn entities
        CreatureTemplate creatureTemplate = CreatureTemplate.createDefault("human");
        Entity creature = CreatureUtils.serverSpawnBasicCreature(Globals.realmManager.first(), new Vector3d(0,0,0), "human", creatureTemplate);
        Entity katana = ItemUtils.serverSpawnBasicItem(Globals.realmManager.first(), new Vector3d(0,0,0), "Katana2H");

        //equip
        Entity inInventoryItem = InventoryUtils.serverAttemptStoreItem(creature, katana);
        ServerEquipState serverEquipState = ServerEquipState.getServerEquipState(creature);
        serverEquipState.commandAttemptEquip(inInventoryItem, serverEquipState.getEquipPoint("handsCombined"));

        //propagate to client
        TestEngineUtils.simulateFrames(2);
        
        //
        //verify was equipped
        assertNotNull(serverEquipState.getEquippedItemAtPoint("handsCombined"));
        List<Entity> children = AttachUtils.getChildrenList(creature);
        assertNotNull(children);
        assertEquals(1, children.size());
        Entity child = children.get(0);
        assertTrue(ItemUtils.isItem(child));
        assertTrue(ItemUtils.isWeapon(child));
        assertNotNull(AttachUtils.getParent(child));
        assertEquals(AttachUtils.getParent(child), creature);
    }

    /**
     * Try equipping two items to the same slot
     */
    @IntegrationTest
    public void testFailEquipToOccupied(){
        TestEngineUtils.simulateFrames(1);
        //spawn entities
        CreatureTemplate creatureTemplate = CreatureTemplate.createDefault("human");
        Entity creature = CreatureUtils.serverSpawnBasicCreature(Globals.realmManager.first(), new Vector3d(0,0,0), "human", creatureTemplate);
        Entity katana = ItemUtils.serverSpawnBasicItem(Globals.realmManager.first(), new Vector3d(0,0,0), "Katana2H");
        Entity katana2 = ItemUtils.serverSpawnBasicItem(Globals.realmManager.first(), new Vector3d(0,0,0), "Katana2H");

        //equip
        Entity inInventoryItem = InventoryUtils.serverAttemptStoreItem(creature, katana);
        ServerEquipState serverEquipState = ServerEquipState.getServerEquipState(creature);
        serverEquipState.commandAttemptEquip(inInventoryItem, serverEquipState.getEquipPoint("handsCombined"));

        //attempt to equip second katana
        Entity inInventoryItem2 = InventoryUtils.serverAttemptStoreItem(creature, katana2);
        serverEquipState.commandAttemptEquip(inInventoryItem2, serverEquipState.getEquipPoint("handsCombined"));

        //propagate to client
        TestEngineUtils.simulateFrames(2);
        
        //
        //verify that only one item was equipped
        assertNotNull(serverEquipState.getEquippedItemAtPoint("handsCombined"));
        List<Entity> children = AttachUtils.getChildrenList(creature);
        assertNotNull(children);
        assertEquals(1, children.size());
        Entity child = children.get(0);
        assertTrue(ItemUtils.isItem(child));
        assertTrue(ItemUtils.isWeapon(child));
        assertNotNull(AttachUtils.getParent(child));
        assertEquals(AttachUtils.getParent(child), creature);
    }
    
}