using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BattleParticipantSprite : MonoBehaviour
{
    public delegate void SpriteClickedAction(BattleParticipant participant);
    public event SpriteClickedAction OnSpriteClicked;

    private BattlePlayerControls playerControls;
    private BattleParticipant participant;
    private RuntimeAnimatorController animatorController;

    private bool removedFromBattle;

    public void Init(BattlePlayerControls playerControls, BattleParticipant participant,
            Material hitEffectMaterial, RuntimeAnimatorController animatorController) {
        this.playerControls = playerControls;
        this.participant = participant;
        this.animatorController = animatorController;
        this.removedFromBattle = false;
        this.GetComponent<SpriteRenderer>().material = hitEffectMaterial;
    }

    // Start is called before the first frame update
    void Start() {
        gameObject.AddComponent<BoxCollider2D>();
        Animator animator = gameObject.AddComponent<Animator>();
        animator.runtimeAnimatorController = this.animatorController;
    }

    // Update is called once per frame
    void Update() {
        if (this.colorChanged && !this.playerControls.CouldTarget(participant)) {
            OnMouseExit();
        }
    }

    void OnMouseDown() {
        if (!this.removedFromBattle) {
            OnSpriteClicked(participant);
        }
    }

    private Color savedColor;
    private bool colorChanged;

    void OnMouseEnter() {
        if (!this.removedFromBattle && this.playerControls.CouldTarget(participant)) {
            SpriteRenderer sprite = GetComponent<SpriteRenderer>();
            this.savedColor = sprite.color;
            sprite.color = Color.Lerp(this.savedColor, Color.white, .5f);
            this.colorChanged = true;
        }
    }

    void OnMouseExit() {
        if (this.colorChanged) {
            SpriteRenderer sprite = GetComponent<SpriteRenderer>();
            sprite.color = this.savedColor;
            this.colorChanged = false;
        }
    }

    public void NotifyDeath(BattleParticipant deadParticipant) {
        if (deadParticipant != this.participant) {
            throw new System.InvalidOperationException(
                "BattleParticipantSprite received NotifyDeath for another battle participant.");
        }
        
        if (!this.removedFromBattle) {
            SpriteRenderer sprite = GetComponent<SpriteRenderer>();
            sprite.enabled = false;
            BoxCollider2D collider = GetComponent<BoxCollider2D>();
            collider.enabled = false;
            this.removedFromBattle = true;
        }
    }
    public void NotifyHit(BattleParticipant deadParticipant) {
        if (deadParticipant != this.participant) {
            throw new System.InvalidOperationException(
                "BattleParticipantSprite received NotifyHit for another battle participant.");
        }
        
        if (!this.removedFromBattle) {
            Animator animator = gameObject.GetComponent<Animator>();
            animator.Play("Hit");
        }
    }
}