package com.luciofm.ifican.app.anim;

import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Build;
import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.RenderScript;
import android.renderscript.ScriptIntrinsicBlur;
import android.transition.TransitionManager;
import android.view.View;
import android.view.ViewGroup;

/**
 * Created by luciofm on 5/25/14.
 */
public class AnimUtils {
    private AnimUtils() {
    }

    public static void shakeView(final View view) {
        ObjectAnimator physX = ObjectAnimator.ofFloat(view, "translationX", -12f, 12f);
        physX.setDuration(50);
        physX.setRepeatCount(10);
        physX.setRepeatMode(ObjectAnimator.RESTART);
        physX.addListener(new SimpleAnimatorListener() {
            @Override
            public void onAnimationEnd(Animator animation) {
                view.animate().translationX(0f).setDuration(10);
            }
        });
        physX.start();
    }

    public static void beginDelayedTransition(ViewGroup container) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
            TransitionManager.beginDelayedTransition(container);
    }

    public static Animator createXTransition(View view, boolean enter) {
        ObjectAnimator x;
        ObjectAnimator y;
        if (enter) {
            x = ObjectAnimator.ofFloat(view, "translationX", 1f, 0f);
            y = ObjectAnimator.ofFloat(view, "translationY", 1f, 0f);
        } else {
            x = ObjectAnimator.ofFloat(view, "translationX", 0f, -1f);
            y = ObjectAnimator.ofFloat(view, "translationY", 0f, -1f);
        }

        AnimatorSet set = new AnimatorSet();
        set.playTogether(x, y);
        return set;
    }

    /**
     * This method of image pixelization utilizes the bitmap scaling operations built
     * into the framework. By downscaling the bitmap and upscaling it back to its
     * original size (while setting the filter flag to false), the same effect can be
     * achieved with much better performance.
     */
    public static BitmapDrawable builtInPixelization(Context context, float pixelizationFactor,
                                                     Bitmap bitmap) {

        int width = bitmap.getWidth();
        int height = bitmap.getHeight();

        int downScaleFactorWidth = (int) (pixelizationFactor * width);
        downScaleFactorWidth = downScaleFactorWidth > 0 ? downScaleFactorWidth : 1;
        int downScaleFactorHeight = (int) (pixelizationFactor * height);
        downScaleFactorHeight = downScaleFactorHeight > 0 ? downScaleFactorHeight : 1;

        int downScaledWidth = width / downScaleFactorWidth;
        int downScaledHeight = height / downScaleFactorHeight;

        Bitmap pixelatedBitmap = Bitmap.createScaledBitmap(bitmap, downScaledWidth,
                                                           downScaledHeight, false);

        /* Bitmap's createScaledBitmap method has a filter parameter that can be set to either
         * true or false in order to specify either bilinear filtering or point sampling
         * respectively when the bitmap is scaled up or now.
         *
         * Similarly, a BitmapDrawable also has a flag to specify the same thing. When the
         * BitmapDrawable is applied to an ImageView that has some scaleType, the filtering
         * flag is taken into consideration. However, for optimization purposes, this flag was
         * ignored in BitmapDrawables before Jelly Bean MR1.
         *
         * Here, it is important to note that prior to JBMR1, two bitmap scaling operations
         * are required to achieve the pixelization effect. Otherwise, a BitmapDrawable
         * can be created corresponding to the downscaled bitmap such that when it is
         * upscaled to fit the ImageView, the upscaling operation is a lot faster since
         * it uses internal optimizations to fit the ImageView.
         * */
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            BitmapDrawable bitmapDrawable = new BitmapDrawable(context.getResources(),
                                                               pixelatedBitmap);
            bitmapDrawable.setFilterBitmap(false);
            return bitmapDrawable;
        } else {
            Bitmap upscaled = Bitmap.createScaledBitmap(pixelatedBitmap, width, height, false);
            return new BitmapDrawable(context.getResources(), upscaled);
        }
    }

    public static final float DEFAULT_BLUR_RADIUS = 12f;

    public static Bitmap fastblur(Context context, Bitmap sentBitmap) {
        return fastblur(context, sentBitmap, DEFAULT_BLUR_RADIUS);
    }

    @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
    public static Bitmap fastblur(Context context, Bitmap sentBitmap, float radius) {

        if (Build.VERSION.SDK_INT > 16 &&
                    (!Build.MODEL.contains("google_sdk")
                             && !Build.MODEL.contains("Emulator")
                             && !Build.MODEL.contains("Android SDK")
                             && !Build.FINGERPRINT.contains("vbox86p"))) {
            Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

            final RenderScript rs = RenderScript.create(context);
            final Allocation input = Allocation.createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE,
                                                                 Allocation.USAGE_SCRIPT);
            final Allocation output = Allocation.createTyped(rs, input.getType());
            final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
            script.setRadius(radius /* e.g. 3.f */);
            script.setInput(input);
            script.forEach(output);
            output.copyTo(bitmap);
            return bitmap;
        }

        radius *= 0.1;
        return blurfast(sentBitmap, (int) radius);

        // Stack Blur v1.0 from
        // http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
        //
        // Java Author: Mario Klingemann <mario at quasimondo.com>
        // http://incubator.quasimondo.com
        // created Feburary 29, 2004
        // Android port : Yahel Bouaziz <yahel at kayenko.com>
        // http://www.kayenko.com
        // ported april 5th, 2012

        // This is a compromise between Gaussian Blur and Box blur
        // It creates much better looking blurs than Box Blur, but is
        // 7x faster than my Gaussian Blur implementation.
        //
        // I called it Stack Blur because this describes best how this
        // filter works internally: it creates a kind of moving stack
        // of colors whilst scanning through the image. Thereby it
        // just has to add one new block of color to the right side
        // of the stack and remove the leftmost color. The remaining
        // colors on the topmost layer of the stack are either added on
        // or reduced by one, depending on if they are on the right or
        // on the left side of the stack.
        //
        // If you are using this algorithm in your code please add
        // the following line:
        //
        // Stack Blur Algorithm by Mario Klingemann <[email protected]>

/*        try {
            Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

            radius *= 0.8;
            if (radius < 1) {
                return (null);
            }

            int w = bitmap.getWidth();
            int h = bitmap.getHeight();

            int[] pix = new int[w * h];
            Log.e("pix", w + " " + h + " " + pix.length);
            bitmap.getPixels(pix, 0, w, 0, 0, w, h);

            int wm = w - 1;
            int hm = h - 1;
            int wh = w * h;
            int div = (int) (radius + radius + 1);

            int r[] = new int[wh];
            int g[] = new int[wh];
            int b[] = new int[wh];
            int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
            int vmin[] = new int[Math.max(w, h)];

            int divsum = (div + 1) >> 1;
            divsum *= divsum;
            int dv[] = new int[256 * divsum];
            for (i = 0; i < 256 * divsum; i++) {
                dv[i] = (i / divsum);
            }

            yw = yi = 0;

            int[][] stack = new int[div][3];
            int stackpointer;
            int stackstart;
            int[] sir;
            int rbs;
            int r1 = (int) (radius + 1);
            int routsum, goutsum, boutsum;
            int rinsum, ginsum, binsum;

            for (y = 0; y < h; y++) {
                rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
                for (i = (int) -radius; i <= radius; i++) {
                    p = pix[yi + Math.min(wm, Math.max(i, 0))];
                    sir = stack[((int) (i + radius))];
                    sir[0] = (p & 0xff0000) >> 16;
                    sir[1] = (p & 0x00ff00) >> 8;
                    sir[2] = (p & 0x0000ff);
                    rbs = r1 - Math.abs(i);
                    rsum += sir[0] * rbs;
                    gsum += sir[1] * rbs;
                    bsum += sir[2] * rbs;
                    if (i > 0) {
                        rinsum += sir[0];
                        ginsum += sir[1];
                        binsum += sir[2];
                    } else {
                        routsum += sir[0];
                        goutsum += sir[1];
                        boutsum += sir[2];
                    }
                }
                stackpointer = (int) radius;

                for (x = 0; x < w; x++) {

                    r[yi] = dv[rsum];
                    g[yi] = dv[gsum];
                    b[yi] = dv[bsum];

                    rsum -= routsum;
                    gsum -= goutsum;
                    bsum -= boutsum;

                    stackstart = (int) (stackpointer - radius + div);
                    sir = stack[stackstart % div];

                    routsum -= sir[0];
                    goutsum -= sir[1];
                    boutsum -= sir[2];

                    if (y == 0) {
                        vmin[x] = (int) Math.min(x + radius + 1, wm);
                    }
                    p = pix[yw + vmin[x]];

                    sir[0] = (p & 0xff0000) >> 16;
                    sir[1] = (p & 0x00ff00) >> 8;
                    sir[2] = (p & 0x0000ff);

                    rinsum += sir[0];
                    ginsum += sir[1];
                    binsum += sir[2];

                    rsum += rinsum;
                    gsum += ginsum;
                    bsum += binsum;

                    stackpointer = (stackpointer + 1) % div;
                    sir = stack[(stackpointer) % div];

                    routsum += sir[0];
                    goutsum += sir[1];
                    boutsum += sir[2];

                    rinsum -= sir[0];
                    ginsum -= sir[1];
                    binsum -= sir[2];

                    yi++;
                }
                yw += w;
            }
            for (x = 0; x < w; x++) {
                rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
                yp = (int) (-radius * w);
                for (i = (int) -radius; i <= radius; i++) {
                    yi = Math.max(0, yp) + x;

                    sir = stack[((int) (i + radius))];

                    sir[0] = r[yi];
                    sir[1] = g[yi];
                    sir[2] = b[yi];

                    rbs = r1 - Math.abs(i);

                    rsum += r[yi] * rbs;
                    gsum += g[yi] * rbs;
                    bsum += b[yi] * rbs;

                    if (i > 0) {
                        rinsum += sir[0];
                        ginsum += sir[1];
                        binsum += sir[2];
                    } else {
                        routsum += sir[0];
                        goutsum += sir[1];
                        boutsum += sir[2];
                    }

                    if (i < hm) {
                        yp += w;
                    }
                }
                yi = x;
                stackpointer = (int) radius;
                for (y = 0; y < h; y++) {
                    // Preserve alpha channel: ( 0xff000000 & pix[yi] )
                    pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];

                    rsum -= routsum;
                    gsum -= goutsum;
                    bsum -= boutsum;

                    stackstart = (int) (stackpointer - radius + div);
                    sir = stack[stackstart % div];

                    routsum -= sir[0];
                    goutsum -= sir[1];
                    boutsum -= sir[2];

                    if (x == 0) {
                        vmin[y] = Math.min(y + r1, hm) * w;
                    }
                    p = x + vmin[y];

                    sir[0] = r[p];
                    sir[1] = g[p];
                    sir[2] = b[p];

                    rinsum += sir[0];
                    ginsum += sir[1];
                    binsum += sir[2];

                    rsum += rinsum;
                    gsum += ginsum;
                    bsum += binsum;

                    stackpointer = (stackpointer + 1) % div;
                    sir = stack[stackpointer];

                    routsum += sir[0];
                    goutsum += sir[1];
                    boutsum += sir[2];

                    rinsum -= sir[0];
                    ginsum -= sir[1];
                    binsum -= sir[2];

                    yi += w;
                }
            }

            bitmap.setPixels(pix, 0, w, 0, 0, w, h);
            return (bitmap);
        } catch (OutOfMemoryError ex) {
            return sentBitmap;
        }*/
    }

    static Bitmap blurfast(Bitmap bmp, int radius) {
        try {
            Bitmap bitmap = bmp.copy(bmp.getConfig(), true);
            int w = bmp.getWidth();
            int h = bmp.getHeight();
            int[] pix = new int[w * h];
            bmp.getPixels(pix, 0, w, 0, 0, w, h);

            for(int r = radius; r >= 1; r /= 2) {
                for(int i = r; i < h - r; i++) {
                    for(int j = r; j < w - r; j++) {
                        int tl = pix[(i - r) * w + j - r];
                        int tr = pix[(i - r) * w + j + r];
                        int tc = pix[(i - r) * w + j];
                        int bl = pix[(i + r) * w + j - r];
                        int br = pix[(i + r) * w + j + r];
                        int bc = pix[(i + r) * w + j];
                        int cl = pix[i * w + j - r];
                        int cr = pix[i * w + j + r];

                        pix[(i * w) + j] = 0xFF000000 |
                                                   (((tl & 0xFF) + (tr & 0xFF) + (tc & 0xFF) + (bl & 0xFF) + (br & 0xFF) + (bc & 0xFF) + (cl & 0xFF) + (cr & 0xFF)) >> 3) & 0xFF |
                                                   (((tl & 0xFF00) + (tr & 0xFF00) + (tc & 0xFF00) + (bl & 0xFF00) + (br & 0xFF00) + (bc & 0xFF00) + (cl & 0xFF00) + (cr & 0xFF00)) >> 3) & 0xFF00 |
                                                   (((tl & 0xFF0000) + (tr & 0xFF0000) + (tc & 0xFF0000) + (bl & 0xFF0000) + (br & 0xFF0000) + (bc & 0xFF0000) + (cl & 0xFF0000) + (cr & 0xFF0000)) >> 3) & 0xFF0000;
                    }
                }
            }
            bitmap.setPixels(pix, 0, w, 0, 0, w, h);
            return bitmap;
        }catch (Exception e) {
            return bmp;
        }
    }
}