package com.gh.common.util;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.PixelFormat;
import android.graphics.drawable.Drawable;
import android.media.ExifInterface;
import android.os.Build;

import com.halo.assistant.HaloApp;

import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import androidx.annotation.IntRange;
import androidx.annotation.RequiresApi;
import androidx.renderscript.Allocation;
import androidx.renderscript.Element;
import androidx.renderscript.RenderScript;
import androidx.renderscript.ScriptIntrinsicBlur;

/**
 * Created by LGT on 2016/10/21.
 */
public class BitmapUtils {

    /**
     * 保存图片
     *
     * @param newPath
     * @param filePath
     * @return
     */
    public static boolean savePicture(String newPath, String filePath) {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(filePath, options);
        options.inSampleSize = 2;
        options.inJustDecodeBounds = false;

        File file = new File(newPath);
        int quality = 80;
        do {
            try {
                Bitmap bitmap = BitmapFactory.decodeFile(filePath, options);
                BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file));
                bitmap.compress(Bitmap.CompressFormat.JPEG, quality, bos);
                bos.flush();
                bos.close();
            } catch (IOException e) {
                file.delete();
                e.printStackTrace();
                return false;
            }
            quality -= 10;
            if (quality < 10) {
                quality = 10;
            }
        } while (file.length() > 81920 && quality > 10);
        return true;
    }

    /**
     * 保存图片
     *
     * @param newPath
     * @param filePath
     * @return
     */
    public static boolean savePicture(String newPath, String filePath, int compressSize) {
        if (compressSize > new File(filePath).length()) {
            return false;
        }

        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(filePath, options);
        options.inSampleSize = 2;
        options.inJustDecodeBounds = false;

        Bitmap bitmap = BitmapFactory.decodeFile(filePath, options);

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 85, bos);
        float zoom = (float) Math.sqrt(compressSize / (float) bos.toByteArray().length);

        Matrix matrix = new Matrix();
        matrix.setScale(zoom, zoom);
        Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        bos.reset();
        bitmap.recycle();

        result.compress(Bitmap.CompressFormat.JPEG, 85, bos);
        while (bos.toByteArray().length > compressSize) {
            matrix.setScale(0.9f, 0.9f);

            result = Bitmap.createBitmap(result, 0, 0, result.getWidth(), result.getHeight(), matrix, true);
            bos.reset();
            result.compress(Bitmap.CompressFormat.JPEG, 85, bos);
        }

        File file = new File(newPath);
        try {
            BufferedOutputStream fbos = new BufferedOutputStream(new FileOutputStream(file));
            result.compress(Bitmap.CompressFormat.JPEG, 85, fbos);
            fbos.flush();
            fbos.close();

            result.recycle();
        } catch (Exception e) {
            file.delete();
            e.printStackTrace();
            return false;
        }

        return true;
    }

    public static Bitmap getBitmapByFile(String filepath, int w, int h) {
        return getBitmapByFile(filepath, w, h, Bitmap.Config.RGB_565);
    }

    public static Bitmap getBitmapByFile(String filepath, Bitmap.Config config) {
        return getBitmapByFile(filepath, 0, 0, config);
    }

    /**
     * 根据文件路径返回bitmap
     *
     * @param filepath 文件路径
     * @param w        宽
     * @param h        高
     * @return bitmap
     */
    public static Bitmap getBitmapByFile(String filepath, int w, int h, Bitmap.Config config) {
        try {
            BitmapFactory.Options options = new BitmapFactory.Options();
            // 设置为ture只获取图片大小
            options.inJustDecodeBounds = true;
            options.inPreferredConfig = config;
            // 返回为空
            BitmapFactory.decodeFile(filepath, options);
            int width = options.outWidth;
            int height = options.outHeight;
            float scaleWidth = 0.f, scaleHeight = 0.f;
            if (width > w || height > h) {
                // 缩放
                if (w > 0) scaleWidth = ((float) width) / w;
                if (h > 0) scaleHeight = ((float) height) / h;
            }
            options.inJustDecodeBounds = false;
            int scale = (int) Math.ceil(Math.max(scaleWidth, scaleHeight));
            if (scale % 2 == 1) {
                scale += 1;
            }
            options.inSampleSize = scale;
            Bitmap bitmap = BitmapFactory.decodeFile(filepath, options);
            bitmap = rotatePicture(filepath, bitmap);
            if (bitmap != null) {
                return bitmap;
            }
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static Bitmap rotatePicture(String path, Bitmap bitmap) {
        int rotate = 0;
        try {
            ExifInterface exifInterface = new ExifInterface(path);
            int orientation = exifInterface.getAttributeInt(
                    ExifInterface.TAG_ORIENTATION,
                    ExifInterface.ORIENTATION_NORMAL);
            switch (orientation) {
                case ExifInterface.ORIENTATION_ROTATE_90:
                    rotate = 90;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_180:
                    rotate = 180;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_270:
                    rotate = 270;
                    break;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (rotate != 0) {
            Matrix matrix = new Matrix();
            matrix.setRotate(rotate);
            return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(),
                    bitmap.getHeight(), matrix, true);
        } else {
            return bitmap;
        }
    }

    /**
     * Drawable转Bitmap
     *
     * @param isSquare 是否是正方形
     */
    public static Bitmap drawableToBitmap(Drawable drawable, boolean isSquare) {
        if (drawable == null) {
            return null;
        }

        int w, h;

        // 取 drawable 的长宽
        w = drawable.getIntrinsicWidth();
        h = drawable.getIntrinsicHeight();

        // 在低于 5.1 和运行内存小于 2G 的设备上减小图片大小，避免 OOM，128 * 128 又不是不能看
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP
                || DeviceUtils.getTotalRamSizeOfDevice(HaloApp.getInstance().getApplication()) < 2000) {
            if (isSquare) {
                w = w > 128 ? 128 : w;
                h = h > 128 ? 128 : h;
            } else {
                w = w > 128 ? w / 2 : w;
                h = h > 128 ? h / 2 : h;
            }
        }
        // 取 drawable 的颜色格式
        Bitmap.Config config = drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
                : Bitmap.Config.RGB_565;
        //建立对应的Bitmap
        Bitmap bitmap = Bitmap.createBitmap(w, h, config);
        // 建立对应 bitmap 的画布
        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, w, h);
        // 把 drawable 内容画到画布中
        drawable.draw(canvas);

        return bitmap;
    }

    /**
     * 修改bitmap透明度
     *
     * @param sourceImg
     * @param config
     * @param number
     * @return
     */
    public static Bitmap getTransparentBitmap(Bitmap sourceImg, Bitmap.Config config, int number) {
        int[] argb = new int[sourceImg.getWidth() * sourceImg.getHeight()];
        sourceImg.getPixels(argb, 0, sourceImg.getWidth(), 0, 0, sourceImg
                .getWidth(), sourceImg.getHeight());// 获得图片的ARGB值
        number = number * 255 / 100;
        for (int i = 0; i < argb.length; i++) {
            argb[i] = (number << 24) | (argb[i] & 0x00FFFFFF);
        }
        sourceImg = Bitmap.createBitmap(argb, sourceImg.getWidth(), sourceImg
                .getHeight(), config);
        return sourceImg;
    }


    /**
     * 高斯模糊
     *
     * @param context
     * @param image
     * @param radius
     * @return
     */
    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
    public static Bitmap getBlurBitmap(Context context, Bitmap image, @IntRange(from = 1, to = 25) int radius) {
        // 计算图片缩小后的长宽
        int width = Math.round(image.getWidth() * 0.8f);
        int height = Math.round(image.getHeight() * 0.8f);

        // 将缩小后的图片做为预渲染的图片。
        Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
        // 创建一张渲染后的输出图片。
        Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);
        // 创建RenderScript内核对象
        RenderScript rs = RenderScript.create(context);
        // 创建一个模糊效果的RenderScript的工具对象
        ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

        // 由于RenderScript并没有使用VM来分配内存,所以需要使用Allocation类来创建和分配内存空间。
        // 创建Allocation对象的时候其实内存是空的,需要使用copyTo()将数据填充进去。
        Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
        Allocation tmpOut = Allocation.createTyped(rs, tmpIn.getType());
        // 设置渲染的模糊程度, 25f是最大模糊度
        blurScript.setRadius(radius);
        // 设置blurScript对象的输入内存
        blurScript.setInput(tmpIn);
        // 将输出数据保存到输出内存中
        blurScript.forEach(tmpOut);

        // 将数据填充到Allocation中
        tmpOut.copyTo(outputBitmap);

        return outputBitmap;
    }

    /**
     * 保存图片
     *
     * @param bitmap
     * @param path
     */
    public static void saveBitmap(Bitmap bitmap, String path) {
        File file = new File(path);
        if (file.exists()) {
            file.delete();
        }
        FileOutputStream out;
        try {
            out = new FileOutputStream(file);
            if (bitmap.compress(Bitmap.CompressFormat.PNG, 80, out)) {
                out.flush();
                out.close();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * 压缩图片
     *
     * @param bitmap
     * @param compressSize 压缩大小(单位k)
     */
    public static Bitmap compressBitmap(Bitmap bitmap, int compressSize) {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        Matrix matrix = new Matrix();
        Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
        result.compress(Bitmap.CompressFormat.WEBP, 100, bos);

        while (bos.toByteArray().length > compressSize * 1024) {
            matrix.setScale(0.9f, 0.9f);
            result = Bitmap.createBitmap(result, 0, 0, result.getWidth(), result.getHeight(), matrix, true);
            bos.reset();
            result.compress(Bitmap.CompressFormat.WEBP, 100, bos);
        }

        return result;
    }
}