import android.annotation.SuppressLint;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.net.http.SslError;
import android.os.Build;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.webkit.*;
import android.widget.EditText;
import android.widget.LinearLayout;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AlertDialog;

import java.io.Serializable;
import java.util.Locale;

/**
 * Created by hp on 2017/8/31.
 * 通用WebView
 */
public class CommonWebView extends WebView implements Serializable {
    private static String tag = "CommonWebView";
    private static boolean DEBUG = false;

    public CommonWebView(Context context) {
        this(context, null);
    }

    public CommonWebView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CommonWebView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        // Generic
        setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
        setVerticalScrollBarEnabled(false);
        setHorizontalScrollBarEnabled(false);

        // WebSettings
        WebSettings settings = this.getSettings();
        settings.setDefaultTextEncodingName("utf-8");
        settings.setJavaScriptEnabled(true);//支持js
        settings.setDomStorageEnabled(true);
        settings.setLoadsImagesAutomatically(true);

        setWebViewClient(new DefaultWebViewClient(getContext()));
        setWebChromeClient(new DefaultWebChromeClient());
    }

    @Override
    public WebSettings getSettings() {
        return super.getSettings();
    }

    /**
     * @param object 供JS调用的实例
     * @param name   内部写定为 {@code "android"}
     */
    @SuppressLint("JavascriptInterface")
    @Override
    public void addJavascriptInterface(Object object, String name) {
        super.addJavascriptInterface(object, name);
    }

    public void registerJSO(Object object) {
        addJavascriptInterface(object, "android");
    }

    @Override
    public void loadUrl(String url) {
        super.loadUrl(url);
        System.out.println("loadUrl=" + url);
    }

    @Override
    public void goBack() {
        if (canGoBack()) {
            super.goBack();
        }
    }

    @Override
    public void goForward() {
        if (canGoForward()) {
            super.goForward();
        }
    }

    @Override
    public void goBackOrForward(int steps) {
        super.goBackOrForward(steps);
    }

    public void setDebug(boolean isDebug) {
        DEBUG = isDebug;
    }

    public static class DefaultWebViewClient extends WebViewClient {
        private Context context;

        public DefaultWebViewClient(@NonNull Context context) {
            this.context = context;
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
            // New API
            // 拦截'tel:'链接
            String targetUrl = request.getUrl().getScheme();
            if (matchSchemes(targetUrl) && context != null) {
                Intent intent = new Intent(Intent.ACTION_VIEW, request.getUrl());
                context.startActivity(intent);
                return true;
            }
            return super.shouldOverrideUrlLoading(view, request);
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String targetUrl) {
            // Old API
            // 拦截'tel:'链接
            if (matchSchemes(targetUrl) && context != null) {
                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(targetUrl));
                context.startActivity(intent);
                return true;
            }
            return super.shouldOverrideUrlLoading(view, targetUrl);
        }

        @Override
        public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
            String msg = "onReceivedError api-old";
            msg += String.format(
                    Locale.CHINESE,
                    ": (%d) %s, %s",
                    errorCode,
                    failingUrl,
                    description
            );
            if (DEBUG) Log.e(tag, msg);
        }

        @Override
        public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
            String msg = "onReceivedError api-new";
            if (Build.VERSION.SDK_INT >= 23) {
                msg += String.format(
                        Locale.CHINESE,
                        ": (%d) %s, %s",
                        error.getErrorCode(),
                        request.getUrl().toString(),
                        error.getDescription()
                );
            }
            if (DEBUG) Log.e(tag, msg);
        }

        @Override
        public void onReceivedHttpAuthRequest(final WebView view, final HttpAuthHandler handler, final String host, final String realm) {
            LinearLayout linearView = new LinearLayout(this.context);
            linearView.setOrientation(LinearLayout.VERTICAL);
            final EditText nameEdit = new EditText(this.context);
            nameEdit.setHint("用户名");
            linearView.addView(nameEdit);
            final EditText passEdit = new EditText(this.context);
            passEdit.setHint("密码");
            linearView.addView(passEdit);
            new AlertDialog.Builder(this.context).setTitle(host)
                    .setMessage(realm)
                    .setView(linearView)
                    .setNegativeButton("确定", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            handler.proceed(nameEdit.getText().toString().trim(), passEdit.getText().toString().trim());
                        }
                    })
                    .setPositiveButton("", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            handler.cancel();
                        }
                    })
                    .create()
                    .show();
        }

        @Override
        public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
            handler.proceed();
        }
    }

    public static class DefaultWebChromeClient extends WebChromeClient {
        @Override
        public boolean onConsoleMessage(ConsoleMessage consoleMessage) {
            if (DEBUG) {
                System.out.println(String.format(Locale.CHINESE, "%s---> [%s:Line(%d)] %s", tag, consoleMessage.messageLevel(), consoleMessage.lineNumber(), consoleMessage.message()));
            }
            return super.onConsoleMessage(consoleMessage);
        }
    }

    /**
     * 匹配链接协议，并匹配冒号间是否带空格
     * <br/><code>tel:</code>
     * <br/><code>tel :</code>
     */
    private static boolean matchSchemes(String url) {
        return url != null && (
                url.startsWith("mailto:")
                        || url.startsWith("mailto :")
                        || url.startsWith("tel:")
                        || url.startsWith("tel :")
        );
    }
}