using System;
using System.Collections.Generic;
using Reset.Core.Tools;
using Reset.Units;
using UnityEngine;

public class UnitCombat : MonoBehaviour{
    public List<Collider> draggedUnits = new List<Collider>();
    
    private UnitMovementHandler movement;

    private Vector3 lastPosition;
    private Vector3 positionDelta;

    private float lastSpeed;
    private float speedDelta;
    
    void Awake(){
        movement = GetComponent<UnitMovementHandler>();
    }

    void Start(){
        lastPosition = transform.position;
    }

    // Update is called once per frame
    void Update(){
        positionDelta = lastPosition.DirectionTo(transform.position);
        speedDelta = Vector3.Distance(lastPosition, transform.position) / Time.deltaTime;
        
        // Test
        speedDelta *= 1.0f;
        speedDelta = Mathf.Max(3f, speedDelta);
        float speedDiff = Mathf.Lerp(.2f, 1.4f, speedDelta);
        speedDelta *= speedDiff;
        
        DebugOverlayDrawer.ChangeValue($"Combat - {name}", "Position Delta", positionDelta);
        DebugOverlayDrawer.ChangeValue($"Combat - {name}", "Speed Delta", speedDelta);
            
        lastPosition = transform.position;

        foreach (Collider draggedUnit in draggedUnits) {
            UnitMovementHandler draggedUnitMovement = draggedUnit.GetComponent<UnitMovementHandler>();
            if (!draggedUnitMovement) {
                Debug.LogError($"No available UnitMovement on {draggedUnit.name}. Aborting drag on this unit.");
                continue;
            }
            
            draggedUnitMovement.SetNewDirection((positionDelta).ToVector2(), 1f, true);
            draggedUnitMovement.SetNewSpeed(speedDelta, 1f, true);
            draggedUnitMovement.SetNewRotation(-transform.position.DirectionTo(draggedUnit.transform.position), 1f, true);
        }
    }
}