//------------------------------------------------------------------------------
/*
    This file is part of Beast: https://github.com/vinniefalco/Beast
    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>

    Portions of this file are from JUCE.
    Copyright (c) 2013 - Raw Material Software Ltd.
    Please visit http://www.juce.com

    Permission to use, copy, modify, and/or distribute this software for any
    purpose  with  or without fee is hereby granted, provided that the above
    copyright notice and this permission notice appear in all copies.

    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================

package com.beast;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.net.Uri;
import android.os.Bundle;
import android.view.*;
import android.view.inputmethod.BaseInputConnection;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;
import android.graphics.*;
import android.opengl.*;
import android.text.ClipboardManager;
import android.text.InputType;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.HttpURLConnection;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.media.MediaScannerConnection;
import android.media.MediaScannerConnection.MediaScannerConnectionClient;

//==============================================================================
public final class BeastAppActivity   extends Activity
{
    //==============================================================================
    static
    {
        System.loadLibrary ("beast_jni");
    }

    @Override
    public final void onCreate (Bundle savedInstanceState)
    {
        super.onCreate (savedInstanceState);

        viewHolder = new ViewHolder (this);
        setContentView (viewHolder);

        setVolumeControlStream (AudioManager.STREAM_MUSIC);
    }

    @Override
    protected final void onDestroy()
    {
        quitApp();
        super.onDestroy();
    }

    @Override
    protected final void onPause()
    {
        if (viewHolder != null)
            viewHolder.onPause();

        suspendApp();
        super.onPause();
    }

    @Override
    protected final void onResume()
    {
        super.onResume();

        if (viewHolder != null)
            viewHolder.onResume();

        resumeApp();
    }

    @Override
    public void onConfigurationChanged (Configuration cfg)
    {
        super.onConfigurationChanged (cfg);
        setContentView (viewHolder);
    }

    private void callAppLauncher()
    {
        launchApp (getApplicationInfo().publicSourceDir,
                   getApplicationInfo().dataDir);
    }

    //==============================================================================
    private native void launchApp (String appFile, String appDataDir);
    private native void quitApp();
    private native void suspendApp();
    private native void resumeApp();
    private native void setScreenSize (int screenWidth, int screenHeight);

    //==============================================================================
    public native void deliverMessage (long value);
    private android.os.Handler messageHandler = new android.os.Handler();

    public final void postMessage (long value)
    {
        messageHandler.post (new MessageCallback (value));
    }

    private final class MessageCallback  implements Runnable
    {
        public MessageCallback (long value_)        { value = value_; }
        public final void run()                     { deliverMessage (value); }

        private long value;
    }

    //==============================================================================
    private ViewHolder viewHolder;

    public final ComponentPeerView createNewView (boolean opaque)
    {
        ComponentPeerView v = new ComponentPeerView (this, opaque);
        viewHolder.addView (v);
        return v;
    }

    public final void deleteView (ComponentPeerView view)
    {
        ViewGroup group = (ViewGroup) (view.getParent());

        if (group != null)
            group.removeView (view);
    }

    final class ViewHolder  extends ViewGroup
    {
        public ViewHolder (Context context)
        {
            super (context);
            setDescendantFocusability (ViewGroup.FOCUS_AFTER_DESCENDANTS);
            setFocusable (false);
        }

        protected final void onLayout (boolean changed, int left, int top, int right, int bottom)
        {
            setScreenSize (getWidth(), getHeight());

            if (isFirstResize)
            {
                isFirstResize = false;
                callAppLauncher();
            }
        }

        public final void onPause()
        {
            for (int i = getChildCount(); --i >= 0;)
            {
                View v = getChildAt (i);

                if (v instanceof ComponentPeerView)
                    ((ComponentPeerView) v).onPause();
            }
        }

        public final void onResume()
        {
            for (int i = getChildCount(); --i >= 0;)
            {
                View v = getChildAt (i);

                if (v instanceof ComponentPeerView)
                    ((ComponentPeerView) v).onResume();
             }
         }

        private boolean isFirstResize = true;
    }

    public final void excludeClipRegion (android.graphics.Canvas canvas, float left, float top, float right, float bottom)
    {
        canvas.clipRect (left, top, right, bottom, android.graphics.Region.Op.DIFFERENCE);
    }

    //==============================================================================
    public final String getClipboardContent()
    {
        ClipboardManager clipboard = (ClipboardManager) getSystemService (CLIPBOARD_SERVICE);
        return clipboard.getText().toString();
    }

    public final void setClipboardContent (String newText)
    {
        ClipboardManager clipboard = (ClipboardManager) getSystemService (CLIPBOARD_SERVICE);
        clipboard.setText (newText);
    }

    //==============================================================================
    public final void showMessageBox (String title, String message, final long callback)
    {
        AlertDialog.Builder builder = new AlertDialog.Builder (this);
        builder.setTitle (title)
               .setMessage (message)
               .setCancelable (true)
               .setPositiveButton ("OK", new DialogInterface.OnClickListener()
                    {
                        public void onClick (DialogInterface dialog, int id)
                        {
                            dialog.cancel();
                            BeastAppActivity.this.alertDismissed (callback, 0);
                        }
                    });

        builder.create().show();
    }

    public final void showOkCancelBox (String title, String message, final long callback)
    {
        AlertDialog.Builder builder = new AlertDialog.Builder (this);
        builder.setTitle (title)
               .setMessage (message)
               .setCancelable (true)
               .setPositiveButton ("OK", new DialogInterface.OnClickListener()
                    {
                        public void onClick (DialogInterface dialog, int id)
                        {
                            dialog.cancel();
                            BeastAppActivity.this.alertDismissed (callback, 1);
                        }
                    })
               .setNegativeButton ("Cancel", new DialogInterface.OnClickListener()
                    {
                        public void onClick (DialogInterface dialog, int id)
                        {
                            dialog.cancel();
                            BeastAppActivity.this.alertDismissed (callback, 0);
                        }
                    });

        builder.create().show();
    }

    public final void showYesNoCancelBox (String title, String message, final long callback)
    {
        AlertDialog.Builder builder = new AlertDialog.Builder (this);
        builder.setTitle (title)
               .setMessage (message)
               .setCancelable (true)
               .setPositiveButton ("Yes", new DialogInterface.OnClickListener()
                    {
                        public void onClick (DialogInterface dialog, int id)
                        {
                            dialog.cancel();
                            BeastAppActivity.this.alertDismissed (callback, 1);
                        }
                    })
               .setNegativeButton ("No", new DialogInterface.OnClickListener()
                    {
                        public void onClick (DialogInterface dialog, int id)
                        {
                            dialog.cancel();
                            BeastAppActivity.this.alertDismissed (callback, 2);
                        }
                    })
               .setNeutralButton ("Cancel", new DialogInterface.OnClickListener()
                    {
                        public void onClick (DialogInterface dialog, int id)
                        {
                            dialog.cancel();
                            BeastAppActivity.this.alertDismissed (callback, 0);
                        }
                    });

        builder.create().show();
    }

    public native void alertDismissed (long callback, int id);

    //==============================================================================
    public final class ComponentPeerView extends ViewGroup
                                         implements View.OnFocusChangeListener
    {
        public ComponentPeerView (Context context, boolean opaque_)
        {
            super (context);
            setWillNotDraw (false);
            opaque = opaque_;

            setFocusable (true);
            setFocusableInTouchMode (true);
            setOnFocusChangeListener (this);
            requestFocus();
        }

        //==============================================================================
        private native void handlePaint (Canvas canvas);

        @Override
        public void draw (Canvas canvas)
        {
            super.draw (canvas);
            handlePaint (canvas);
        }

        @Override
        public boolean isOpaque()
        {
            return opaque;
        }

        private boolean opaque;

        //==============================================================================
        private native void handleMouseDown (int index, float x, float y, long time);
        private native void handleMouseDrag (int index, float x, float y, long time);
        private native void handleMouseUp   (int index, float x, float y, long time);

        @Override
        public boolean onTouchEvent (MotionEvent event)
        {
            int action = event.getAction();
            long time = event.getEventTime();

            switch (action & MotionEvent.ACTION_MASK)
            {
                case MotionEvent.ACTION_DOWN:
                    handleMouseDown (event.getPointerId(0), event.getX(), event.getY(), time);
                    return true;

                case MotionEvent.ACTION_CANCEL:
                case MotionEvent.ACTION_UP:
                    handleMouseUp (event.getPointerId(0), event.getX(), event.getY(), time);
                    return true;

                case MotionEvent.ACTION_MOVE:
                {
                    int n = event.getPointerCount();
                    for (int i = 0; i < n; ++i)
                        handleMouseDrag (event.getPointerId(i), event.getX(i), event.getY(i), time);

                    return true;
                }

                case MotionEvent.ACTION_POINTER_UP:
                {
                    int i = (action & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
                    handleMouseUp (event.getPointerId(i), event.getX(i), event.getY(i), time);
                    return true;
                }

                case MotionEvent.ACTION_POINTER_DOWN:
                {
                    int i = (action & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
                    handleMouseDown (event.getPointerId(i), event.getX(i), event.getY(i), time);
                    return true;
                }

                default:
                    break;
            }

            return false;
        }

        //==============================================================================
        private native void handleKeyDown (int keycode, int textchar);
        private native void handleKeyUp (int keycode, int textchar);

        public void showKeyboard (boolean shouldShow)
        {
            InputMethodManager imm = (InputMethodManager) getSystemService (Context.INPUT_METHOD_SERVICE);

            if (imm != null)
            {
                if (shouldShow)
                    imm.showSoftInput (this, InputMethodManager.SHOW_FORCED);
                else
                    imm.hideSoftInputFromWindow (getWindowToken(), 0);
            }
        }

        @Override
        public boolean onKeyDown (int keyCode, KeyEvent event)
        {
            handleKeyDown (keyCode, event.getUnicodeChar());
            return true;
        }

        @Override
        public boolean onKeyUp (int keyCode, KeyEvent event)
        {
            handleKeyUp (keyCode, event.getUnicodeChar());
            return true;
        }

        // this is here to make keyboard entry work on a Galaxy Tab2 10.1
        @Override
        public InputConnection onCreateInputConnection (EditorInfo outAttrs)
        {
            outAttrs.actionLabel = "";
            outAttrs.hintText = "";
            outAttrs.initialCapsMode = 0;
            outAttrs.initialSelEnd = outAttrs.initialSelStart = -1;
            outAttrs.label = "";
            outAttrs.imeOptions = EditorInfo.IME_ACTION_DONE | EditorInfo.IME_FLAG_NO_EXTRACT_UI;
            outAttrs.inputType = InputType.TYPE_NULL;

            return new BaseInputConnection (this, false);
        }

        //==============================================================================
        @Override
        protected void onSizeChanged (int w, int h, int oldw, int oldh)
        {
            super.onSizeChanged (w, h, oldw, oldh);
            viewSizeChanged();
        }

        @Override
        protected void onLayout (boolean changed, int left, int top, int right, int bottom)
        {
            for (int i = getChildCount(); --i >= 0;)
                requestTransparentRegion (getChildAt (i));
        }

        private native void viewSizeChanged();

        @Override
        public void onFocusChange (View v, boolean hasFocus)
        {
            if (v == this)
                focusChanged (hasFocus);
        }

        private native void focusChanged (boolean hasFocus);

        public void setViewName (String newName)    {}

        public boolean isVisible()                  { return getVisibility() == VISIBLE; }
        public void setVisible (boolean b)          { setVisibility (b ? VISIBLE : INVISIBLE); }

        public boolean containsPoint (int x, int y)
        {
            return true; //xxx needs to check overlapping views
        }

        public final void onPause()
        {
            for (int i = getChildCount(); --i >= 0;)
            {
                View v = getChildAt (i);

                if (v instanceof OpenGLView)
                    ((OpenGLView) v).onPause();
            }
        }

        public final void onResume()
        {
            for (int i = getChildCount(); --i >= 0;)
            {
                View v = getChildAt (i);

                if (v instanceof OpenGLView)
                    ((OpenGLView) v).onResume();
            }
        }

        public OpenGLView createGLView()
        {
            OpenGLView glView = new OpenGLView (getContext());
            addView (glView);
            return glView;
        }
    }

    //==============================================================================
    public final class OpenGLView   extends GLSurfaceView
                                    implements GLSurfaceView.Renderer
    {
        OpenGLView (Context context)
        {
            super (context);
            setEGLContextClientVersion (2);
            setRenderer (this);
            setRenderMode (RENDERMODE_WHEN_DIRTY);
        }

        @Override
        public void onSurfaceCreated (GL10 unused, EGLConfig config)
        {
            contextCreated();
        }

        @Override
        public void onSurfaceChanged (GL10 unused, int width, int height)
        {
            contextChangedSize();
        }

        @Override
        public void onDrawFrame (GL10 unused)
        {
            render();
        }

        private native void contextCreated();
        private native void contextChangedSize();
        private native void render();
    }

    //==============================================================================
    public final int[] renderGlyph (char glyph, Paint paint, android.graphics.Matrix matrix, Rect bounds)
    {
        Path p = new Path();
        paint.getTextPath (String.valueOf (glyph), 0, 1, 0.0f, 0.0f, p);

        RectF boundsF = new RectF();
        p.computeBounds (boundsF, true);
        matrix.mapRect (boundsF);

        boundsF.roundOut (bounds);
        bounds.left--;
        bounds.right++;

        final int w = bounds.width();
        final int h = Math.max (1, bounds.height());

        Bitmap bm = Bitmap.createBitmap (w, h, Bitmap.Config.ARGB_8888);

        Canvas c = new Canvas (bm);
        matrix.postTranslate (-bounds.left, -bounds.top);
        c.setMatrix (matrix);
        c.drawPath (p, paint);

        final int sizeNeeded = w * h;
        if (cachedRenderArray.length < sizeNeeded)
            cachedRenderArray = new int [sizeNeeded];

        bm.getPixels (cachedRenderArray, 0, w, 0, 0, w, h);
        bm.recycle();
        return cachedRenderArray;
    }

    private int[] cachedRenderArray = new int [256];

    //==============================================================================
    public static class HTTPStream
    {
        public HTTPStream (HttpURLConnection connection_) throws IOException
        {
            connection = connection_;
            inputStream = new BufferedInputStream (connection.getInputStream());
        }

        public final void release()
        {
            try
            {
                inputStream.close();
            }
            catch (IOException e)
            {}

            connection.disconnect();
        }

        public final int read (byte[] buffer, int numBytes)
        {
            int num = 0;

            try
            {
                num = inputStream.read (buffer, 0, numBytes);
            }
            catch (IOException e)
            {}

            if (num > 0)
                position += num;

            return num;
        }

        public final long getPosition()                 { return position; }
        public final long getTotalLength()              { return -1; }
        public final boolean isExhausted()              { return false; }
        public final boolean setPosition (long newPos)  { return false; }

        private HttpURLConnection connection;
        private InputStream inputStream;
        private long position;
    }

    public static final HTTPStream createHTTPStream (String address, boolean isPost, byte[] postData,
                                                     String headers, int timeOutMs,
                                                     java.lang.StringBuffer responseHeaders)
    {
        try
        {
            HttpURLConnection connection = (HttpURLConnection) (new URL (address).openConnection());

            if (connection != null)
            {
                try
                {
                    if (isPost)
                    {
                        connection.setConnectTimeout (timeOutMs);
                        connection.setDoOutput (true);
                        connection.setChunkedStreamingMode (0);

                        OutputStream out = connection.getOutputStream();
                        out.write (postData);
                        out.flush();
                    }

                    return new HTTPStream (connection);
                }
                catch (Throwable e)
                {
                    connection.disconnect();
                }
            }
        }
        catch (Throwable e)
        {}

        return null;
    }

    public final void launchURL (String url)
    {
        startActivity (new Intent (Intent.ACTION_VIEW, Uri.parse (url)));
    }

    public static final String getLocaleValue (boolean isRegion)
    {
        java.util.Locale locale = java.util.Locale.getDefault();

        return isRegion ? locale.getDisplayCountry  (java.util.Locale.US)
                        : locale.getDisplayLanguage (java.util.Locale.US);
    }

    //==============================================================================
    private final class SingleMediaScanner  implements MediaScannerConnectionClient
    {
        public SingleMediaScanner (Context context, String filename)
        {
            file = filename;
            msc = new MediaScannerConnection (context, this);
            msc.connect();
        }

        @Override
        public void onMediaScannerConnected()
        {
            msc.scanFile (file, null);
        }

        @Override
        public void onScanCompleted (String path, Uri uri)
        {
            msc.disconnect();
        }

        private MediaScannerConnection msc;
        private String file;
    }

    public final void scanFile (String filename)
    {
        new SingleMediaScanner (this, filename);
    }
}