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

public class JupiterStratosphereEffects : MonoBehaviour
{
    [Header("Налаштування")]
    public Material cloudMaterial;
    public Material lightningMaterial;
    public float planetRadius = 72f;
    public ParticleSystem jupiterGlow;

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

    private List<ParticleSystem> cloudClusters = new List<ParticleSystem>();
    private List<GameObject> lightningObjects = new List<GameObject>();
    private Coroutine lightningCoroutine;

    void Awake()
    {
        enabled = false;
    }

    public void InitState()
    {
        foreach (var ps in cloudClusters)
            if (ps != null) Destroy(ps.gameObject);
        cloudClusters.Clear();

        foreach (var obj in lightningObjects)
            if (obj != null) Destroy(obj);
        lightningObjects.Clear();

        if (lightningCoroutine != null)
            StopCoroutine(lightningCoroutine);

        stratosphereLevel = 1f;
        previousLevel = 1f;

        CreateClouds();
        lightningCoroutine = StartCoroutine(SpawnLightning());

        if (jupiterGlow != null)
        {
            var e = jupiterGlow.emission;
            e.rateOverTime = 100f;
            if (!jupiterGlow.isPlaying) jupiterGlow.Play();
        }
    }

    void CreateClouds()
    {
        float[] latitudes = { -40f, -15f, 15f, 40f };
        Color[] colors =
        {
            new Color(0.75f, 0.5f, 0.25f),
            new Color(0.85f, 0.65f, 0.35f),
            new Color(0.8f, 0.6f, 0.3f),
            new Color(0.7f, 0.45f, 0.2f)
        };

        for (int i = 0; i < latitudes.Length; i++)
        {
            GameObject obj = new GameObject("JupiterCloud_" + i);
            obj.transform.parent = null;
            obj.transform.position = transform.position;

            ParticleSystem ps = obj.AddComponent<ParticleSystem>();

            var main = ps.main;
            main.loop = true;
            main.playOnAwake = true;
            main.maxParticles = 1500;
            main.startLifetime = new ParticleSystem.MinMaxCurve(6f, 12f);
            main.startSpeed = new ParticleSystem.MinMaxCurve(0f, 0f);
            main.startSize = new ParticleSystem.MinMaxCurve(1.5f, 4f);
            main.startColor = new ParticleSystem.MinMaxGradient(
                new Color(colors[i].r, colors[i].g, colors[i].b, 0.35f),
                new Color(colors[i].r * 0.8f, colors[i].g * 0.8f, colors[i].b * 0.8f, 0.2f)
            );
            main.simulationSpace = ParticleSystemSimulationSpace.World;
            main.gravityModifier = 0f;

            var emission = ps.emission;
            emission.rateOverTime = 80f;

            var shape = ps.shape;
            shape.enabled = true;
            shape.shapeType = ParticleSystemShapeType.Sphere;
            shape.radius = planetRadius * 1.1f;
            shape.radiusThickness = 0.05f;
            shape.arc = 360f;
            shape.rotation = new Vector3(latitudes[i], 0f, 0f);

            var vel = ps.velocityOverLifetime;
            vel.enabled = true;
            vel.space = ParticleSystemSimulationSpace.World;
            vel.orbitalX = new ParticleSystem.MinMaxCurve(0f);
            vel.orbitalY = new ParticleSystem.MinMaxCurve(i % 2 == 0 ? 2f : -2f);
            vel.orbitalZ = new ParticleSystem.MinMaxCurve(0f);
            vel.x = new ParticleSystem.MinMaxCurve(0f);
            vel.y = new ParticleSystem.MinMaxCurve(0f);
            vel.z = new ParticleSystem.MinMaxCurve(0f);

            var colorOverLifetime = ps.colorOverLifetime;
            colorOverLifetime.enabled = true;
            Gradient gradient = new Gradient();
            gradient.SetKeys(
                new GradientColorKey[] {
                    new GradientColorKey(colors[i], 0f),
                    new GradientColorKey(colors[i] * 0.8f, 0.5f),
                    new GradientColorKey(colors[i] * 0.6f, 1f)
                },
                new GradientAlphaKey[] {
                    new GradientAlphaKey(0f, 0f),
                    new GradientAlphaKey(0.35f, 0.15f),
                    new GradientAlphaKey(0.25f, 0.8f),
                    new GradientAlphaKey(0f, 1f)
                }
            );
            colorOverLifetime.color = new ParticleSystem.MinMaxGradient(gradient);

            var noise = ps.noise;
            noise.enabled = true;
            noise.strength = 0.4f;
            noise.frequency = 0.2f;
            noise.scrollSpeed = 0.1f;

            var renderer = ps.GetComponent<ParticleSystemRenderer>();
            renderer.renderMode = ParticleSystemRenderMode.Billboard;
            renderer.sortingFudge = 4f;
            if (cloudMaterial != null)
                renderer.material = cloudMaterial;

            ps.Play();
            cloudClusters.Add(ps);
        }
    }

    IEnumerator SpawnLightning()
    {
        while (enabled)
        {
            if (stratosphereLevel < 1f)
            {
                float interval = Mathf.Lerp(0.3f, 2f, stratosphereLevel);
                yield return new WaitForSeconds(interval);

                Vector3 dir = Random.onUnitSphere;
                Vector3 pos = transform.position + dir * planetRadius * 1.05f;

                GameObject lightObj = new GameObject("JupiterLightning");
                lightObj.transform.position = pos;
                Light light = lightObj.AddComponent<Light>();
                light.type = LightType.Point;
                light.color = new Color(0.8f, 0.9f, 1f);
                light.intensity = Mathf.Lerp(50f, 200f, 1f - stratosphereLevel);
                light.range = planetRadius * 3f;
                lightningObjects.Add(lightObj);

                yield return new WaitForSeconds(0.1f);
                if (lightObj != null) Destroy(lightObj);
                lightningObjects.Remove(lightObj);
            }
            else
            {
                yield return new WaitForSeconds(0.5f);
            }
        }
    }

    void UpdateClouds()
    {
        foreach (var ps in cloudClusters)
        {
            if (ps == null) continue;
            var emission = ps.emission;

            if (stratosphereLevel >= 1f)
                emission.rateOverTime = 80f;
            else if (stratosphereLevel >= 0.7f)
                emission.rateOverTime = Mathf.Lerp(80f, 50f, Mathf.InverseLerp(1f, 0.7f, stratosphereLevel));
            else if (stratosphereLevel >= 0.5f)
                emission.rateOverTime = Mathf.Lerp(50f, 20f, Mathf.InverseLerp(0.7f, 0.5f, stratosphereLevel));
            else if (stratosphereLevel >= 0.3f)
                emission.rateOverTime = Mathf.Lerp(20f, 5f, Mathf.InverseLerp(0.5f, 0.3f, stratosphereLevel));
            else
                emission.rateOverTime = 0f;
        }
    }

    void UpdateGlow()
    {
        if (jupiterGlow == null) return;
        var glowEmission = jupiterGlow.emission;

        if (stratosphereLevel >= 1f)
            glowEmission.rateOverTime = 100f;
        else if (stratosphereLevel >= 0.7f)
            glowEmission.rateOverTime = Mathf.Lerp(100f, 60f, Mathf.InverseLerp(1f, 0.7f, stratosphereLevel));
        else if (stratosphereLevel >= 0.5f)
            glowEmission.rateOverTime = Mathf.Lerp(60f, 30f, Mathf.InverseLerp(0.7f, 0.5f, stratosphereLevel));
        else if (stratosphereLevel >= 0.3f)
            glowEmission.rateOverTime = Mathf.Lerp(30f, 10f, Mathf.InverseLerp(0.5f, 0.3f, stratosphereLevel));
        else if (stratosphereLevel > 0f)
            glowEmission.rateOverTime = Mathf.Lerp(10f, 0f, Mathf.InverseLerp(0.3f, 0f, stratosphereLevel));
        else
        {
            glowEmission.rateOverTime = 0f;
            jupiterGlow.Stop();
        }
    }

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

        if (stratosphereLevel >= 1f && previousLevel < 1f)
            InitState();

        previousLevel = stratosphereLevel;
        UpdateClouds();
        UpdateGlow();
    }

    public void CleanUp()
    {
        foreach (var ps in cloudClusters)
            if (ps != null) Destroy(ps.gameObject);
        cloudClusters.Clear();

        foreach (var obj in lightningObjects)
            if (obj != null) Destroy(obj);
        lightningObjects.Clear();

        if (lightningCoroutine != null)
            StopCoroutine(lightningCoroutine);

        if (jupiterGlow != null)
        {
            var e = jupiterGlow.emission;
            e.rateOverTime = 100f;
            jupiterGlow.Play();
        }

        enabled = false;
    }
}