package com.hdl.sdk.ttl.Utils.HDLUtlis;

import java.math.BigDecimal;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;

/**
 * Created by JLChen on 2019/7/25
 */
public class HDLUtlis {

    /**
     * 将object转为Integer类型
     *
     * @param object
     * @return
     */
    public static Integer getIntegerByObject(Object object) {
        Integer in = null;
        if (object != null) {
            if (object instanceof Integer) {
                in = (Integer) object;
            } else if (object instanceof String) {
                in = Integer.parseInt((String) object);
            } else if (object instanceof Double) {
                in = (int) ((double) object);
            } else if (object instanceof Float) {
                in = (int) ((float) object);
            } else if (object instanceof BigDecimal) {
                in = ((BigDecimal) object).intValue();
            } else if (object instanceof Long) {
                in = ((Long) object).intValue();
            }
        }
        return in;
    }

    /**
     * int类型转4字节byte数组
     *
     * @param mInt
     * @return 4字节byte数组
     */
    public static byte[] intToByteArray(int mInt) {
        byte[] result = new byte[4];
        // 由高位到低位
        result[0] = (byte) ((mInt >> 24) & 0xFF);
        result[1] = (byte) ((mInt >> 16) & 0xFF);
        result[2] = (byte) ((mInt >> 8) & 0xFF);
        result[3] = (byte) (mInt & 0xFF);
        return result;
    }

    /**
     * byte[]转int
     *
     * @param bytes
     * @return
     */
    public static int byteArrayToInt(byte[] bytes) {
        int value = 0;
        // 由高位到低位
        for (int i = 0; i < 4; i++) {
            int shift = (4 - 1 - i) * 8;
            value += (bytes[i] & 0x000000FF) << shift;// 往高位游
        }
        return value;
    }


    public static float byte2Float(byte[] bytes) {
       /* if (bytes.length != 4) {
            return 0;
        }*/
        byte b[] = bytes;
        ByteBuffer buf = ByteBuffer.allocateDirect(4);
        buf = buf.order(ByteOrder.LITTLE_ENDIAN);//小端用这行代码，默认大端转换
        buf.put(b);
        buf.rewind();
        float f2 = buf.getFloat();
        return f2;
    }

    /**
     * 调整int 类型参数
     *
     * @return progress
     */
    public static int getTrueProgressInt(int progress) {
        if (progress < 0) {
            progress = 0;
        } else if (progress > 100) {
            progress = 100;
        }
        return progress;
    }


    /**
     * 4 byte 转换为float类型
     *
     * @param b1
     * @param b2
     * @param b3
     * @param b4
     * @return
     */
    public static float byteToFloat(byte b1, byte b2, byte b3, byte b4) {
        byte[] mByte = new byte[4];
        mByte[0] = b1;
        mByte[1] = b2;
        mByte[2] = b3;
        mByte[3] = b4;
        return byteArrayToFloat(mByte);
    }


    /**
     * byte[4]数组 转换为float类型
     *
     * @param arr 长度为4
     * @return
     */
    public static float byteArrayToFloat(byte[] arr) {
        try {
            return Float.intBitsToFloat(getInt(arr));
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }


    /**
     * 连续4个字节获得一个int
     *
     * @param arr
     * @return int
     */
    public static int getInt(byte[] arr) {
        return (0xff000000 & (arr[0] << 24)) |
                (0x00ff0000 & (arr[1] << 16)) |
                (0x0000ff00 & (arr[2] << 8)) |
                (0x000000ff & arr[3]);
    }
}