package com.myapp.myapp;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.webkit.CookieManager;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.ProgressBar;

import com.parse.ParseInstallation;

public class MainActivity extends Activity {

    private Activity activity;
    private WebView webView;
    private View noInternetImage, splashImage;
    private ProgressBar progressBar;
    private Button retryButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_activity);

        activity = this;
        splashImage = findViewById(R.id.splashImage);
        progressBar = (ProgressBar)findViewById(R.id.progressBar);
        webView = (WebView)findViewById(R.id.webview);
        noInternetImage = findViewById(R.id.noInternetImage);
        retryButton = (Button)findViewById(R.id.retryButton);

        webView.setBackgroundColor(Color.parseColor("#1e2b3e"));
        webView.getSettings().setJavaScriptEnabled(true);
        webView.setWebViewClient(new MyWebViewClient());
        webView.setWebChromeClient(new WebChromeClient());

        if (!DetectConnection.checkInternetConnection(activity)) {
            showNoInternetScreen();
        } else {
            String url = getUrlFromParamsOrDefault();
            webView.loadUrl(url);
        }
    }

    private class MyWebViewClient extends WebViewClient
    {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            if (!DetectConnection.checkInternetConnection(activity)) {
                showNoInternetScreen();
            } else {
                view.loadUrl(url);
            }
            return true;
        }

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            super.onPageStarted(view, url, favicon);
        }

        @Override
        public void onPageFinished(final WebView view, final String url) {
            setParseUser(url);
            showWebView();
            super.onPageFinished(view, url);
        }

        public void setParseUser(final String url) {
            String userId = getCookie(url, "snp_notification_id");
            if (userId != null) {
                ParseInstallation installation = ParseInstallation.getCurrentInstallation();
                installation.put("userId", userId);
                installation.saveInBackground();
            }
        }

        public String getCookie(String siteName, String cookieName){
            CookieManager cookieManager = CookieManager.getInstance();
            String cookiesString = CookieManager.getInstance().getCookie(siteName);
            String[] cookiesArray = cookiesString.split(";");
            for (String cookie : cookiesArray ){
                String[] keyValueArray = cookie.split("=");
                String key = keyValueArray[0];
                String value = keyValueArray[1];
                if (key.equals(cookieName)) return value;
            }
            return null;
        }
    }

    public void reloadWebView(View view) {
        if (!DetectConnection.checkInternetConnection(activity)) {
            showNoInternetScreen();
        } else {
            showLoadingScreen();
            String url = getUrlFromParamsOrDefault();
            webView.loadUrl(url);
        }
    }

    private void showWebView() {
        webView.setVisibility(View.VISIBLE);
        noInternetImage.setVisibility(View.GONE);
        retryButton.setVisibility(View.GONE);
        splashImage.setVisibility(View.GONE);
        progressBar.setVisibility(View.GONE);
    }

    private void showLoadingScreen() {
        webView.setVisibility(View.GONE);
        noInternetImage.setVisibility(View.GONE);
        retryButton.setVisibility(View.GONE);
        splashImage.setVisibility(View.VISIBLE);
        progressBar.setVisibility(View.VISIBLE);
    }

    private void showNoInternetScreen() {
        noInternetImage.setVisibility(View.VISIBLE);
        retryButton.setVisibility(View.VISIBLE);
        splashImage.setVisibility(View.GONE);
        progressBar.setVisibility(View.GONE);
        webView.setVisibility(View.GONE);
    }

    private String getUrlFromParamsOrDefault() {
        String url = "https://www.example.com";
        Bundle extras = getIntent().getExtras();
        if (extras != null) { url = extras.getString("url"); }
        return url;
    }

    @Override
    public void onBackPressed() {
        if (webView != null && webView.canGoBack()) {
            webView.goBack();
        } else {
            super.onBackPressed();
        }
    }

}