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

public class VenusThermosphereEffects : MonoBehaviour
{
    [Header("Ðàä³àö³éí³ õâèë³")]
    public Material radiationMaterial;
    public float planetRadius = 12f;

    [Header("Venus Glow")]
    public GameObject venusGlowObject;

    [Range(0f, 1f)]
    public float thermosphereLevel = 1f;
    public float previousLevel = 1f;

    private List<GameObject> activeRings = new List<GameObject>();
    private bool glowEnabled = false;
    private bool wavesActive = false;

    void Awake()
    {
        enabled = false;
        if (venusGlowObject != null)
            venusGlowObject.SetActive(false);
    }

    public void InitState()
    {
        CleanUpRings();

        thermosphereLevel = 1f;
        previousLevel = 1f;
        glowEnabled = false;
        wavesActive = false;

        if (venusGlowObject != null)
            venusGlowObject.SetActive(false);
    }

    void CleanUpRings()
    {
        foreach (var obj in activeRings)
            if (obj != null) Destroy(obj);
        activeRings.Clear();
    }

    void StartWaves()
    {
        if (wavesActive) return;
        wavesActive = true;
        StartCoroutine(SpawnRadiationRing(0f));
        StartCoroutine(SpawnRadiationRing(0.4f));
        StartCoroutine(SpawnRadiationRing(0.8f));
        StartCoroutine(SpawnRadiationRing(1.2f));
        StartCoroutine(SpawnRadiationRing(1.3f));
        StartCoroutine(SpawnRadiationRing(1.4f));
        StartCoroutine(SpawnRadiationRing(1.6f));
        StartCoroutine(SpawnRadiationRing(2.0f));
    }

    void StopWaves()
    {
        wavesActive = false;
        CleanUpRings();
    }

    IEnumerator SpawnRadiationRing(float delay)
    {
        yield return new WaitForSeconds(delay);

        while (wavesActive && enabled)
        {
            float level = thermosphereLevel;

            float intensity;
            float waitTime;

            if (level >= 10.5f)
            {
                intensity = 1f;
                waitTime = 0.2f;
            }
            else if (level >= 7f)
            {
                intensity = 0.85f;
                waitTime = 0.6f;
            }
            else if (level >= 4f)
            {
                intensity = 0.5f;
                waitTime = 1.5f;
            }
            else if (level >= 1f)
            {
                intensity = 0.25f;
                waitTime = 3f;
            }
            else
            {
                yield return new WaitForSeconds(0.5f);
                continue;
            }

            GameObject ringObj = new GameObject("RadiationRing");
            ringObj.transform.position = transform.position;
            activeRings.Add(ringObj);

            LineRenderer lr = ringObj.AddComponent<LineRenderer>();
            lr.useWorldSpace = true;
            lr.loop = true;
            lr.positionCount = 128;
            lr.material = radiationMaterial;

            Vector3 randomAxis = Random.onUnitSphere;
            Vector3 perp1 = Vector3.Cross(randomAxis, Vector3.up).normalized;
            if (perp1.magnitude < 0.1f)
                perp1 = Vector3.Cross(randomAxis, Vector3.right).normalized;
            Vector3 perp2 = Vector3.Cross(randomAxis, perp1).normalized;

            float duration = Mathf.Lerp(2f, 0.8f, intensity);
            float elapsed = 0f;
            float startRadius = planetRadius * 0.95f;
            float endRadius = planetRadius * Mathf.Lerp(2f, 3.5f, intensity);
            float maxWidth = Mathf.Lerp(0.2f, 0.8f, intensity);

            while (elapsed < duration && ringObj != null)
            {
                float t = elapsed / duration;
                float radius = Mathf.Lerp(startRadius, endRadius, t);
                float alpha = Mathf.Sin(t * Mathf.PI) * intensity;
                float width = maxWidth * Mathf.Sin(t * Mathf.PI);

                for (int j = 0; j < 128; j++)
                {
                    float angle = j * Mathf.PI * 2f / 128f;
                    Vector3 pos = transform.position +
                        (perp1 * Mathf.Cos(angle) + perp2 * Mathf.Sin(angle)) * radius;
                    lr.SetPosition(j, pos);
                }

                lr.startColor = new Color(0.2f, 1f, 0.6f, alpha);
                lr.endColor = new Color(0.1f, 0.8f, 1f, alpha);
                lr.startWidth = width;
                lr.endWidth = width;

                elapsed += Time.deltaTime;
                yield return null;
            }

            if (ringObj != null)
            {
                activeRings.Remove(ringObj);
                Destroy(ringObj);
            }

            yield return new WaitForSeconds(waitTime);
        }
    }

    void UpdateGlow()
    {
        if (venusGlowObject == null) return;

        if (thermosphereLevel >= 7f && !glowEnabled)
        {
            glowEnabled = true;
            venusGlowObject.SetActive(true);
        }
        else if (thermosphereLevel < 7f && glowEnabled)
        {
            glowEnabled = false;
            venusGlowObject.SetActive(false);
        }
    }

    void Update()
    {
        if (!Application.isPlaying) return;

        previousLevel = thermosphereLevel;

        float intensity = Mathf.Clamp01((thermosphereLevel - 1f) / 14f);

        if (intensity > 0f && !wavesActive)
            StartWaves();
        else if (intensity <= 0f && wavesActive)
            StopWaves();

        UpdateGlow();
    }

    public void CleanUp()
    {
        StopWaves();

        if (venusGlowObject != null)
            venusGlowObject.SetActive(false);

        glowEnabled = false;
        enabled = false;
    }
}