using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.EventSystems;

namespace RimWorldAnimationStudio
{
    public class ActorBody : MonoBehaviour, IPointerClickHandler, IDragHandler
    {
        public int actorID;
        public string bodyType = "Male"; 

        public SpriteRenderer bodyRenderer;
        public SpriteRenderer headRenderer;

        public void Initialize(int actorID)
        {
            this.actorID = actorID;
        }

        public void OnPointerClick(PointerEventData eventData)
        {
            if (eventData.pointerCurrentRaycast.gameObject.GetComponent<ActorBody>() == null)
            { return; }

            Activate();
        }

        public void OnDrag(PointerEventData eventData)
        {
            Activate();

            PawnKeyframe keyframe = Workspace.Instance.GetCurrentPawnKeyframe();

            if (Workspace.Instance.GetCurrentPawnKeyframe() == null)
            { Debug.LogWarning("Cannot alter actor - no keyframe data available"); return; }

            Vector3 mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);        

            if (Workspace.actorManipulationMode == ActorManipulationMode.Pan)
            {
                keyframe.bodyOffsetX = mousePosition.x;
                keyframe.bodyOffsetZ = mousePosition.y;
            }

            else if (Workspace.actorManipulationMode == ActorManipulationMode.Rotate)
            {
                float angle = Vector2.SignedAngle(Vector2.down, (Vector2)mousePosition - (Vector2)transform.position);
                keyframe.bodyAngle = angle;
            }

            else if (Workspace.actorManipulationMode == ActorManipulationMode.Face)
            {
                float angle = Vector2.SignedAngle(Vector2.up, (Vector2)mousePosition - (Vector2)transform.position);
                int facing = -Mathf.RoundToInt(angle / 90f );
                facing = facing < 0 ? facing + 4 : facing;

                keyframe.bodyFacing = facing;
            }

            PawnAnimationClip clip = Workspace.Instance.GetPawnAnimationClip(actorID);
            clip.BuildSimpleCurves();
        }

        public void Activate()
        {
            Workspace.actorID = actorID;

            foreach (ActorBody actorBody in AnimationController.Instance.GetComponentsInChildren<ActorBody>())
            {
                if (actorBody == this)
                { continue; }

                actorBody.bodyRenderer.color = new Color(1f, 1f, 1f);
                actorBody.headRenderer.color = new Color(1f, 1f, 1f);
            }

            bodyRenderer.color = new Color(0f, 1f, 0f);
            headRenderer.color = new Color(0f, 1f, 0f);
        }
    }
}