using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using sam;
using System;
using exprivia;
using System.IO;

public class HeightVariableSubsession : MonoBehaviour, IProductDataConsumer
{
    public Text prodNameText;
    public Text varNameText;
    public Text minValText;
    public Text maxValText;
    public Text curValText;
    public Text latText;
    public Text lonText;
    public Text altText;
    public Text dateText;

    public string dateFormat;

    public Image lut;
    public float lutRange = 40.0f;
    public Color fillColor;

    Texture2D lutTexture;
    int luty;

    [HideInInspector] public int initiallySelectedVariableIndex = 0;
    [HideInInspector] public ProductData data;
    [HideInInspector] public ProductProfile profile;
    [HideInInspector] public int variableIndex;
    [HideInInspector] public ProductVariable prodvar;

    public ProductDataPoint selectedDP = null;
    float lastSelectedX = -1f;
    float lastSelectedY = -1f;

    List<float> latStopList, lonStopList, altBottomList, altTopList;
    List<short> durationList;

    void IProductDataConsumer.SetInitiallySelectedVariableIndex(int i)
    {
        initiallySelectedVariableIndex = i;
    }

    ProductData IProductDataConsumer.GetSelectedProduct()
    {
        return data;
    }
    SatelliteHeightDataConfig cfg;

    private void Awake()
    {
        lutTexture = lut.sprite.texture;
        luty = lutTexture.height >> 1;

        cfg = GlobalDictionary.GetValue("SatelliteDataTypeConfig") as SatelliteHeightDataConfig;
        lutRange = cfg.lutRange;
    }

    public virtual Color GetDataPointColor(ProductDataPoint dp)
    {
        //return Random.ColorHSV();

        if (!dp.varValid[variableIndex])
        {
            return fillColor;
        }

        float val = dp.variables[variableIndex];

        //float frac = ((val - prodvar.scaledMinValue) / prodvar.scaledRange);
        float frac = (val + lutRange) / (2*lutRange);

        frac = Mathf.Clamp(frac, 0.0f, 1.0f);
        float tc = frac * lutTexture.width;
        int intCoord = (int)tc;
        float fracCoord = tc - intCoord;
        Color val1 = lutTexture.GetPixel(intCoord, luty);
        Color val2 = lutTexture.GetPixel(Math.Min(intCoord + 1, lutTexture.width - 1), luty);
        Color c = Color.Lerp(val1, val2, fracCoord);
        c.a = 1f;
        return c;

    }

    public void OnBackButtonPressed() {
        string previousSceneName = (string)GlobalDictionary.GetValue("DataVariableParentSceneName");
        if (!string.IsNullOrEmpty(previousSceneName)) {
            Debug.Log($"<color=white>SWITCHING BACK TO SCENE {previousSceneName}</color>");
            exprivia.ui.Utils.LoadScene(previousSceneName);
        }
        else {
            Debug.Log("<color=green>SHOULD GO BACK TO PREVIOUS SCENE</Color>");
        }
    }

    void IProductDataConsumer.SelectProduct(ProductData pd)
    {
        data = pd;
        profile = data.profile;
        variableIndex = -1;
        prodvar = null;

        prodNameText.text = data.referenceProductName;
        BroadcastMessage("OnProductSelected", data, SendMessageOptions.DontRequireReceiver);

        ProductUserData ud = data.profile.GetUserData("LatStop");
        latStopList = (data.userData[ud.fieldIndex] as List<float>);

        ud = data.profile.GetUserData("LonStop");
        lonStopList = (data.userData[ud.fieldIndex] as List<float>);

        ud = data.profile.GetUserData("AltBottom");
        altBottomList = (data.userData[ud.fieldIndex] as List<float>);

        ud = data.profile.GetUserData("AltTop");
        altTopList = (data.userData[ud.fieldIndex] as List<float>);

        ud = data.profile.GetUserData("DeltaSeconds");
        durationList = (data.userData[ud.fieldIndex] as List<short>);

        SelectVariable(initiallySelectedVariableIndex);
    }

    public void SelectVariable(int varInd)
    {
        if (varInd == variableIndex) return;

        variableIndex = varInd;
        prodvar = profile.variables[variableIndex];

        varNameText.text = prodvar.name;
        minValText.text = (-lutRange).ToString() + prodvar.unit; // prodvar.ScaledMinValWithUnit();
        maxValText.text = lutRange.ToString() + prodvar.unit; // prodvar.ScaledMaxValWithUnit();

        BroadcastMessage("OnVariableSelected", variableIndex, SendMessageOptions.DontRequireReceiver);
    }

    public void SelectDataPoint(ProductDataPoint dp, float x, float y)
    {
        if ((selectedDP != dp) || (lastSelectedX != x) || (lastSelectedY != y))
        {
            if (dp == null)
            {
                latText.text = "Lat: " /*+ Utils.FormatLatitude(selectedLat)*/;
                lonText.text = "Lon: " /*+ Utils.FormatLongitude(selectedLon)*/;
                altText.text = "Alt: ";
                curValText.text = "";
                dateText.text = "";

                if (selectedDP != null)
                    BroadcastMessage("OnDataPointDeselected", SendMessageOptions.DontRequireReceiver);
            }
            else
            {

                float lonStart = dp.longitude;
                float lonEnd = lonStopList[dp.dataPointIndex];

                if (Mathf.Abs(lonStart - lonEnd) > 180.0f)
                {
                    if (lonStart < lonEnd) lonStart += 360.0f;
                    else lonEnd += 360.0f;
                }

                float latStart = dp.latitude;
                float latEnd = latStopList[dp.dataPointIndex];

                float altBot = altBottomList[dp.dataPointIndex];
                float altTop = altTopList[dp.dataPointIndex];

                short duration = durationList[dp.dataPointIndex];
                float secs = (int)(duration * x);
                DateTime t = dp.time.AddSeconds(secs);

                float lat = Mathf.Lerp(latStart, latEnd, x);
                float lon = Mathf.Lerp(lonStart, lonEnd, x);
                float alt = Mathf.Lerp(altBot, altTop, y);

                //Debug.Log($"<color=green> x:{x} lonStart: {lonStart} lonEnd: {lonEnd} lat: {lat}</color>");


                latText.text = "Lat: " + sam.Utils.FormatLatitude(lat);
                lonText.text = "Lon: " + sam.Utils.FormatLongitude(lon);
                altText.text = "Alt: " + alt.ToString("F2") + " Km";
                curValText.text = dp.variables[variableIndex].ToString() + " " + prodvar.unit;
                dateText.text = t.ToString(dateFormat);
                
                if (selectedDP != dp)
                    BroadcastMessage("OnDataPointSelected", dp, SendMessageOptions.DontRequireReceiver);
            }

            selectedDP = dp;
            lastSelectedX = x;
            lastSelectedY = y;



        }
    }

    public void OnEmailButtonPressed() {
        string satelliteId = (string)GlobalDictionary.GetValue("SatelliteId");
        string productId = data.productName;
        string subject = $"ESA {satelliteId} product: {productId}";
        string body =
              $"{satelliteId} data\n\n"
            + $"- Product Name:{productId}\n\n"
            + $"- Variable: {prodvar.name}\n\n"
            + $"- Date: {dateText.text}\n\n"
            + $"- Longitude: {lonText.text}\n\n"
            + $"- Latitude: {latText.text}\n\n"
            + $"- Value: {curValText.text}\n\n"
            + $"Mail from ESA {satelliteId} app\n";

        Debug.Log($"SEND EMAIL! Subject: {subject} body:\n{body}");

        StartCoroutine(CaptureScreenshot(subject, body));


    }

    IEnumerator CaptureScreenshot(string subject, string body) {
        yield return new WaitForEndOfFrame();
        string fileName = "mailScreenshot";
        string filePath = Path.Combine(Application.persistentDataPath, fileName + ".png");

        Texture2D screenImage = new Texture2D(Screen.width, Screen.height);
        //Get Image from screen
        screenImage.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
        screenImage.Apply();

        File.WriteAllBytes(filePath, screenImage.EncodeToPNG());
        Destroy(screenImage);

#if UNITY_ANDROID

        StartCoroutine(ShareAndroidScreenshot(subject, body, filePath));

#else
        NativeShare shareObject = new NativeShare();

        shareObject.SetTitle("Send email"); // Dialog title
        shareObject.SetSubject(subject);
        shareObject.SetText(body);
        shareObject.AddFile(filePath);

        //shareObject.SetCallback(MyCallback);
        shareObject.Share();
#endif
    }

    IEnumerator ShareAndroidScreenshot(string subject, string body, string filePath)
    {
        yield return new WaitForEndOfFrame();

        AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
        AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");
        AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");
        AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent");
        intentObject.Call<AndroidJavaObject>("setAction", intentClass.GetStatic<string>("ACTION_SEND"));

        AndroidJavaObject fileObject = new AndroidJavaObject("java.io.File", filePath);
        AndroidJavaClass fileProviderClass = new AndroidJavaClass("android.support.v4.content.FileProvider");

        object[] providerParams = new object[3];
        providerParams[0] = currentActivity;
        providerParams[1] = Application.identifier + ".provider";
        providerParams[2] = fileObject;
        AndroidJavaObject uriObject = fileProviderClass.CallStatic<AndroidJavaObject>("getUriForFile", providerParams);

        intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_STREAM"), uriObject);
        intentObject.Call<AndroidJavaObject>("setType", "image/png");
        intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_SUBJECT"), subject);
        intentObject.Call<AndroidJavaObject>("putExtra", intentClass.GetStatic<string>("EXTRA_TEXT"), body);
        intentObject.Call<AndroidJavaObject>("addFlags", intentClass.GetStatic<int>("FLAG_GRANT_READ_URI_PERMISSION"));

        AndroidJavaObject chooser = intentClass.CallStatic<AndroidJavaObject>("createChooser", intentObject, "Send email");
        currentActivity.Call("startActivity", chooser);
    }

}