package electrosphere.entity.state.attack;


import electrosphere.net.synchronization.BehaviorTreeIdEnums;

import electrosphere.engine.Globals;
import electrosphere.entity.Entity;
import electrosphere.entity.EntityDataStrings;
import electrosphere.entity.EntityUtils;
import electrosphere.entity.btree.BehaviorTree;
import electrosphere.entity.state.client.firstPerson.FirstPersonTree;
import electrosphere.entity.state.collidable.Impulse;
import electrosphere.entity.state.equip.ClientEquipState;
import electrosphere.entity.state.hitbox.HitboxCollectionState;
import electrosphere.entity.state.rotator.RotatorTree;
import electrosphere.entity.types.attach.AttachUtils;
import electrosphere.entity.types.collision.CollisionObjUtils;
import electrosphere.entity.types.creature.CreatureUtils;
import electrosphere.entity.types.item.ItemUtils;
import electrosphere.game.data.creature.type.attack.AttackMove;
import electrosphere.net.parser.net.message.EntityMessage;
import electrosphere.net.synchronization.annotation.SyncedField;
import electrosphere.net.synchronization.annotation.SynchronizableEnum;
import electrosphere.net.synchronization.annotation.SynchronizedBehaviorTree;
import electrosphere.renderer.actor.Actor;

import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

import org.joml.Vector3d;

@SynchronizedBehaviorTree(name = "clientAttackTree", isServer = false, correspondingTree="serverAttackTree")
/**
 * Client basic attack tree
 */
public class ClientAttackTree implements BehaviorTree {
    
    @SynchronizableEnum
    /**
     * States available to the attack tree
     */
    public static enum AttackTreeState {
        WINDUP,
        HOLD,
        ATTACK,
        COOLDOWN,
        IDLE,
    }

    @SynchronizableEnum
    /**
     * The state of drifting forward during the attack
     */
    public static enum AttackTreeDriftState {
        DRIFT,
        NO_DRIFT,
    }
    
    //the current state of the tree
    @SyncedField
    AttackTreeState state;

    //the current state of drifting caused by the tree
    @SyncedField
    AttackTreeDriftState driftState;
    
    //the parent entity of this attack tree
    Entity parent;
    
    //the queue of network messages to process
    CopyOnWriteArrayList<EntityMessage> networkMessageQueue = new CopyOnWriteArrayList<EntityMessage>();
    
    //the last time this tree was updated by server
    long lastUpdateTime = 0;
    
    //the current frame of the current animation/move
    float frameCurrent;
    
    //the name of the current animation
    String animationName = "SwingWeapon";
    
    //the max frame
    int maxFrame = 60;

    List<AttackMove> currentMoveset = null;
    AttackMove currentMove = null;
    @SyncedField
    String currentMoveId = null;
    Entity currentWeapon = null;
    boolean currentMoveHasWindup;
    boolean currentMoveCanHold;
    boolean stillHold = true;
    boolean firesProjectile = false;
    String projectileToFire = null;
    String attackingPoint = null;
    
    public ClientAttackTree(Entity e){
        setState(AttackTreeState.IDLE);
        setDriftState(AttackTreeDriftState.NO_DRIFT);
        parent = e;
    }
    
    /**
     * <p> Automatically generated </p>
     * <p>
     * Gets state.
     * </p>
     */
    public AttackTreeState getState(){
        return state;
    }
    
    /**
     * Starts an attack
     */
    public void start(){
        currentMoveCanHold = false;
        currentMoveHasWindup = false;
        stillHold = true;
        firesProjectile = false;
        projectileToFire = null;
        currentWeapon = null;
        attackingPoint = null;
        //figure out attack type we should be doing
        String attackType = getAttackType();
        //if we can attack, setup doing so
        if(canAttack(attackType)){
            setAttackMoveTypeActive(attackType);
            currentMoveset = getMoveset(attackType);
            if(currentMoveset != null){
                Globals.clientConnection.queueOutgoingMessage(EntityMessage.constructstartAttackMessage());
            }
        }
    }

    public void release(){
        stillHold = false;
    }
    
    public void interrupt(){
        setState(AttackTreeState.IDLE);
    }
    
    public void slowdown(){
        setState(AttackTreeState.COOLDOWN);
    }
    
    @Override
    public void simulate(float deltaTime){
        frameCurrent = frameCurrent + (float)Globals.timekeeper.getDeltaFrames();
        Actor entityActor = EntityUtils.getActor(parent);
        Vector3d movementVector = CreatureUtils.getFacingVector(parent);

        //
        //synchronize move from server
        if(this.currentMoveset == null){
            this.currentMoveset = getMoveset(getAttackType());
        }
        if(
            this.currentMoveset != null &&
                (this.currentMove == null && this.currentMoveId != null)
                ||
                (this.currentMove != null && this.currentMove.getAttackMoveId() != this.currentMoveId)
        ){
            for(AttackMove move : currentMoveset){
                if(move.getAttackMoveId().equals(currentMoveId)){
                    currentMove = move;
                }
            }
        }

        //
        //parse attached network messages
        for(EntityMessage message : networkMessageQueue){
            networkMessageQueue.remove(message);
//            System.out.println("MOVE to " + message.getX() + " " + message.getY() + " " + message.getZ());
            long updateTime = message.gettime();
            switch(message.getMessageSubtype()){
                case ATTACKUPDATE:
                    if(updateTime > lastUpdateTime){
                        lastUpdateTime = updateTime;
                        switch(message.gettreeState()){
                         case 0:
                                setState(AttackTreeState.WINDUP);
                                frameCurrent = 0;
    //                            System.out.println("Set state STARTUP");
                                break;
                            case 1:
                                frameCurrent = currentMove.getWindupFrames()+1;
                                setState(AttackTreeState.ATTACK);
    //                            System.out.println("Set state MOVE");
                                break;
                            case 2:
                                frameCurrent = currentMove.getWindupFrames()+currentMove.getAttackFrames()+1;
                                setState(AttackTreeState.COOLDOWN);
    //                            System.out.println("Set state SLOWDOWN");
                                break;
                            case 3:
                                frameCurrent = 60;
                                setState(AttackTreeState.IDLE);
    //                            System.out.println("Set state IDLE");
                                break;
                        }
                    }
                    EntityUtils.getPosition(parent).set(message.getpositionX(),message.getpositionY(),message.getpositionZ());
                    CreatureUtils.setFacingVector(parent, new Vector3d(message.getrotationX(),message.getrotationY(),message.getrotationZ()));
                    break;
                default:
                //silently ignore
                break;
            }
        }

        //handle the drifting if we're supposed to currently
        switch(driftState){
            case DRIFT:
            if(currentMove != null){
                //calculate the vector of movement
                CollisionObjUtils.getCollidable(parent).addImpulse(new Impulse(new Vector3d(movementVector), new Vector3d(0,0,0), new Vector3d(0,0,0), currentMove.getDriftGoal() * Globals.timekeeper.getSimFrameTime(), "movement"));
                if(frameCurrent > currentMove.getDriftFrameEnd()){
                    setDriftState(AttackTreeDriftState.NO_DRIFT);
                }
            }
            break;
            case NO_DRIFT:
            if(currentMove != null){
                if(frameCurrent > currentMove.getDriftFrameStart() && frameCurrent < currentMove.getDriftFrameEnd()){
                    setDriftState(AttackTreeDriftState.DRIFT);
                }
            }
            break;
        }

        //state machine
        switch(state){
            case WINDUP: {
                if(parent.containsKey(EntityDataStrings.CLIENT_ROTATOR_TREE)){
                    RotatorTree.getClientRotatorTree(parent).setActive(true);
                }
                if(currentMove != null){
                    if(entityActor != null){
                        if(!entityActor.isPlayingAnimation() || !entityActor.isPlayingAnimation(currentMove.getWindupAnimationName())){
                            entityActor.playAnimation(currentMove.getWindupAnimationName(),1);
                            entityActor.incrementAnimationTime(0.0001);
                        }
                        FirstPersonTree.conditionallyPlayAnimation(Globals.firstPersonEntity, currentMove.getAnimationFirstPersonWindup().getName());
                    }
                }
            } break;
            case HOLD: {
                if(entityActor != null){
                    if(!entityActor.isPlayingAnimation() || !entityActor.isPlayingAnimation(currentMove.getHoldAnimationName())){
                        entityActor.playAnimation(currentMove.getHoldAnimationName(),1);
                        entityActor.incrementAnimationTime(0.0001);
                    }
                    FirstPersonTree.conditionallyPlayAnimation(Globals.firstPersonEntity, currentMove.getAnimationFirstPersonHold().getName());
                }
            } break;
            case ATTACK: {
                if(entityActor != null && currentMove != null){
                    if(!entityActor.isPlayingAnimation() || !entityActor.isPlayingAnimation(currentMove.getAttackAnimationName())){
                        entityActor.playAnimation(currentMove.getAttackAnimationName(),1);
                        entityActor.incrementAnimationTime(0.0001);
                    }
                    FirstPersonTree.conditionallyPlayAnimation(Globals.firstPersonEntity, currentMove.getAnimationFirstPersonAttack().getName());
                }
                //activate hitboxes
                List<Entity> attachedEntities = AttachUtils.getChildrenList(parent);
                for(Entity currentAttached : attachedEntities){
                    if(HitboxCollectionState.hasHitboxState(currentAttached)){
                        HitboxCollectionState currentState = HitboxCollectionState.getHitboxState(currentAttached);
                        currentState.setActive(true);
                    }
                }
            } break;
            case COOLDOWN: {
                //deactive hitboxes
                List<Entity> attachedEntities = AttachUtils.getChildrenList(parent);
                for(Entity currentAttached : attachedEntities){
                    if(HitboxCollectionState.hasHitboxState(currentAttached)){
                        HitboxCollectionState currentState = HitboxCollectionState.getHitboxState(currentAttached);
                        currentState.setActive(false);
                    }
                }
                if(currentMove != null && frameCurrent > currentMove.getWindupFrames() + currentMove.getAttackFrames() + currentMove.getCooldownFrames()){
                    frameCurrent = 0;
                    if(parent.containsKey(EntityDataStrings.CLIENT_ROTATOR_TREE)){
                        RotatorTree.getClientRotatorTree(parent).setActive(false);
                    }
                }
            } break;
            case IDLE: {
                currentMove = null;
                currentMoveset = null;
            } break;
        }
    }

    public void addNetworkMessage(EntityMessage networkMessage) {
        networkMessageQueue.add(networkMessage);
    }

    /**
     * Gets the current attack type
     * @return The current attack type
     */
    String getAttackType(){
        String rVal = null;
        if(ClientEquipState.hasEquipState(parent)){
            ClientEquipState equipState = ClientEquipState.getEquipState(parent);
            for(String point : equipState.getEquippedPoints()){
                Entity item = equipState.getEquippedItemAtPoint(point);
                if(ItemUtils.isWeapon(item)){
                    attackingPoint = point;
                    currentWeapon = item;
                    switch(ItemUtils.getWeaponClass(item)){
                        case "sword1h":
                        rVal = EntityDataStrings.ATTACK_MOVE_TYPE_MELEE_SWING_ONE_HAND;
                        break;
                        case "bow2h":
                        rVal = EntityDataStrings.ATTACK_MOVE_TYPE_BOW_TWO_HAND;
                        break;
                    }
                }
            }
        }
        return rVal;
    }
    
    boolean canAttack(String attackType){
        boolean rVal = true;
        if(attackType == null){
            return false;
        } else if(state != AttackTreeState.IDLE){
            //checks if we have a next move and if we're in the specified range of frames when we're allowed to chain into it
            if(
                currentMove != null &&
                currentMove.getNextMoveId() != null && 
                !currentMove.getNextMoveId().equals("") &&
                frameCurrent >= currentMove.getMoveChainWindowStart() && frameCurrent <= currentMove.getMoveChainWindowEnd()
            ){
                rVal = true;
            }
        } else {
            if(ClientEquipState.hasEquipState(parent)){
                // ClientEquipState equipState = ClientEquipState.getEquipState(parent);
                // if(equipState.hasEquipPrimary()){
                //     switch(attackType){
                //         case EntityDataStrings.ATTACK_MOVE_TYPE_MELEE_SWING_ONE_HAND:
                //             break;
                //         default:
                //             rVal = false;
                //             break;
                //     }
                // } else {
                //     switch(attackType){
                //         case EntityDataStrings.ATTACK_MOVE_TYPE_MELEE_SWING_ONE_HAND:
                //             rVal = false;
                //             break;
                //         default:
                //             rVal = false;
                //             break;
                //     }
                // }
            }
        }
        return rVal;
    }

    /**
     * Gets the object for next move in the current attack chain
     * @param moveset The moveset to search
     * @param nextMoveId The id of the next move
     * @return The object that corresponds to the id if it exists, otherwise false
     */
    AttackMove getNextMove(List<AttackMove> moveset, String nextMoveId){
        AttackMove rVal = null;
        for(AttackMove move : moveset){
            if(move.getAttackMoveId().equals(nextMoveId)){
                rVal = move;
                break;
            }
        }
        return rVal;
    }

    /**
     * Sets the current attack type of the entity
     * @param attackType the current attack type
     */
    public void setAttackMoveTypeActive(String attackType){
        parent.putData(EntityDataStrings.ATTACK_MOVE_TYPE_ACTIVE, attackType);
    }

    /**
     * Gets the current moveset
     * @param attackType the attack type
     * @return The moveset if it exists
     */
    public List<AttackMove> getMoveset(String attackType){
        return (List<AttackMove>)parent.getData(attackType);
    }
    
    /**
     * <p> Automatically generated </p>
     * <p>
     * Sets state and handles the synchronization logic for it.
     * </p>
     * @param state The value to set state to.
     */
    public void setState(AttackTreeState state){
        this.state = state;
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Gets driftState.
     * </p>
     */
    public AttackTreeDriftState getDriftState(){
        return driftState;
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Sets driftState and handles the synchronization logic for it.
     * </p>
     * @param driftState The value to set driftState to.
     */
    public void setDriftState(AttackTreeDriftState driftState){
        this.driftState = driftState;
    }
    /**
     * <p> (initially) Automatically generated </p>
     * <p> More parameters can be safely added to this method</p>
     * <p>
     * Attaches this tree to the entity.
     * </p>
     * @param entity The entity to attach to
     * @param tree The behavior tree to attach
     */
    public static ClientAttackTree attachTree(Entity parent){
        ClientAttackTree rVal = new ClientAttackTree(parent);
        //put manual code here (setting params, etc)
    
    
        //!!WARNING!! from here below should not be touched
        //This was generated automatically to properly alert various systems that the btree exists and should be tracked
        parent.putData(EntityDataStrings.TREE_CLIENTATTACKTREE, rVal);
        Globals.clientScene.registerBehaviorTree(rVal);
        Globals.entityValueTrackingService.attachTreeToEntity(parent, BehaviorTreeIdEnums.BTREE_CLIENTATTACKTREE_ID);
        return rVal;
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Detatches this tree from the entity.
     * </p>
     * @param entity The entity to detach to
     * @param tree The behavior tree to detach
     */
    public static void detachTree(Entity entity, BehaviorTree tree){
        Globals.entityValueTrackingService.detatchTreeFromEntity(entity, BehaviorTreeIdEnums.BTREE_CLIENTATTACKTREE_ID);
    }
    /**
     * <p>
     * Gets the ClientAttackTree of the entity
     * </p>
     * @param entity the entity
     * @return The ClientAttackTree
     */
    public static ClientAttackTree getClientAttackTree(Entity entity){
        return (ClientAttackTree)entity.getData(EntityDataStrings.TREE_CLIENTATTACKTREE);
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Converts this enum type to an equivalent short value
     * </p>
     * @param enumVal The enum value
     * @return The short value
     */
    public static short getAttackTreeStateEnumAsShort(AttackTreeState enumVal){
        switch(enumVal){
            case WINDUP:
                return 0;
            case HOLD:
                return 1;
            case ATTACK:
                return 2;
            case COOLDOWN:
                return 3;
            case IDLE:
                return 4;
            default:
                return 0;
        }
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Converts a short to the equivalent enum value
     * </p>
     * @param shortVal The short value
     * @return The enum value
     */
    public static AttackTreeState getAttackTreeStateShortAsEnum(short shortVal){
        switch(shortVal){
            case 0:
                return AttackTreeState.WINDUP;
            case 1:
                return AttackTreeState.HOLD;
            case 2:
                return AttackTreeState.ATTACK;
            case 3:
                return AttackTreeState.COOLDOWN;
            case 4:
                return AttackTreeState.IDLE;
            default:
                return AttackTreeState.WINDUP;
        }
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Converts this enum type to an equivalent short value
     * </p>
     * @param enumVal The enum value
     * @return The short value
     */
    public static short getAttackTreeDriftStateEnumAsShort(AttackTreeDriftState enumVal){
        switch(enumVal){
            case DRIFT:
                return 0;
            case NO_DRIFT:
                return 1;
            default:
                return 0;
        }
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Converts a short to the equivalent enum value
     * </p>
     * @param shortVal The short value
     * @return The enum value
     */
    public static AttackTreeDriftState getAttackTreeDriftStateShortAsEnum(short shortVal){
        switch(shortVal){
            case 0:
                return AttackTreeDriftState.DRIFT;
            case 1:
                return AttackTreeDriftState.NO_DRIFT;
            default:
                return AttackTreeDriftState.DRIFT;
        }
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Gets currentMoveId.
     * </p>
     */
    public String getCurrentMoveId(){
        return currentMoveId;
    }
    /**
     * <p> Automatically generated </p>
     * <p>
     * Sets currentMoveId and handles the synchronization logic for it.
     * </p>
     * @param currentMoveId The value to set currentMoveId to.
     */
    public void setCurrentMoveId(String currentMoveId){
        this.currentMoveId = currentMoveId;
    }
}