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

public class GameDebug : MonoBehaviour
{
    [SerializeField] InputField speedInput;
    [SerializeField] InputField distanceInput;
    [SerializeField] Text absoluteAngleText;
    [SerializeField] InputField offsetAngleInput;
    [SerializeField] Text logText;
    bool loaded = false;

    public static GameDebug ins;

    void Awake()
    {
        ins = this;
    }

    void OnDestroy() {
        if (ins == this) ins = null;
    }

    void Start() 
    {
        BowCamera.ins.enabled = false;
        speedInput.onEndEdit.AddListener(onSpeedInput);
        distanceInput.onEndEdit.AddListener(onDistanceInput);
        onSpeedInput(null);
        onDistanceInput(null);
        loaded = true;
        caluculateAbsoluteAngle();
        //增加射速卡
        PropInfo propInfo = new PropInfo();
        propInfo.id = 22;
        propInfo.count = 1;
        propInfo.inuse = true;
        LoginMgr.myUserInfo.bagList.Add(propInfo);
    }

    public void onSpeedInput(string s) 
    {
        float value = 60;
        try {
            value = float.Parse(speedInput.text);
        } catch (System.Exception) {
            Log("发射速度解析错误\n已重置为默认值");
        }
        Arrow.speed = GameMgr.RealSizeToGameSize(value);
        caluculateAbsoluteAngle();
    }

    public void onDistanceInput(string s) 
    {
        float value = 50;
        try {
            value = float.Parse(distanceInput.text);
        } catch (System.Exception) {
            Log("靶心距离解析错误\n已重置为默认值");
        }
        if (value < 10 || value > 70) {
            Log("靶心距离超出范围\n超出合法区间");
        }
        TargetBody target = GameObject.Find("GameArea/TargetObject").GetComponentInChildren<TargetBody>();
        target.SetDistance(value);
        caluculateAbsoluteAngle();
    }

    public void caluculateAbsoluteAngle() {
        if (!loaded) return;
        float mySpeed = Arrow.speed;
        if (GameAssistUI.ins) {
            mySpeed *= GameAssistUI.ins.shootScaleValue;
        } 
        Vector3 destination = GameObject.Find("GameArea/TargetObject").transform.position;
        Vector3 startPoint = BowCamera.ins.transform.position;
        float deltaX = Vector2.Distance(
            new Vector2(destination.x, destination.z), 
            new Vector2(startPoint.x, startPoint.z)
        );
        float deltaY = destination.y - startPoint.y;
        float a = 0.5f * Physics.gravity.y * Mathf.Pow(deltaX, 2) / Mathf.Pow(mySpeed, 2);
        float b = deltaX;
        float c = a - deltaY;
        bool hasParabolaAngle = Mathf.Pow(b, 2) - 4 * a * c >= 0;
        if (hasParabolaAngle) {
            float res1 = (-b + Mathf.Pow(Mathf.Pow(b, 2) - 4*a*c, 0.5f)) / (2 * a);
            float res2 = (-b - Mathf.Pow(Mathf.Pow(b, 2) - 4*a*c, 0.5f)) / (2 * a);
            float parabolaAngle = Mathf.Min(Mathf.Atan(res1), Mathf.Atan(res2)) / Mathf.PI * 180;

            absoluteAngleText.text = "绝对角度: " + parabolaAngle + "°";
        } else {
            absoluteAngleText.text = "绝对角度: " + "无解";
        }
    }

    private void Log(string text) {
        logText.text = text;
    }

    public float GetOffsetAngle() {
        float angle = 0;
        try {
            angle = float.Parse(offsetAngleInput.text);
        } catch (System.Exception) {
            Log("偏移角度解析错误");
        }
        return angle;
    }

    public void ShowRes(Vector3 basePoint, Vector3 hitPoint) {
        string text = 
            "准心瞄点 " + V3ToString(basePoint) + "\n" +
            "实际落点 " + V3ToString(hitPoint) + "\n" +
            "偏移距离 " + (hitPoint - basePoint).magnitude.ToString("#0.0000") + "m";
        Log(text);
    }

    public string V3ToString(Vector3 v) {
        return "(" + v.x.ToString("#0.00") + ", " + v.y.ToString("#0.00") + ", " + v.z.ToString("#0.00") + ")";
    }

    public void deleteAllArrows() {
        Arrow[] arrows = GameObject.FindObjectsOfType<Arrow>();
        foreach (var arrow in arrows)
        {
            if (!arrow.hasDoneNextShoot) continue;
            try {
                GameObject.Destroy(arrow.gameObject);
            } catch (UnityException e) {
                Debug.Log("Delete Arrow Error\n" + e.Message);
            }
        }
    }
}