package com.waytronic.libwtronline;

import org.junit.Test;

import static org.junit.Assert.*;

import java.util.Arrays;

/**
 * Example local unit test, which will execute on the development machine (host).
 *
 * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
 */
public class ExampleUnitTest {
    @Test
    public void addition_isCorrect() {
//        assertEquals(4, 2 + 2);
        //模拟广播包数据
        String hexString = "02010A030357540CFF0050E57757140003640001040D00051003021218100957545F303035306535373735373134";
        byte[] scanRecordBytes = hexStringToBytes(hexString);
        processScanResult(scanRecordBytes);
    }

    private void processScanResult(byte[] scanRecordBytes) {
        if (scanRecordBytes == null) return;

        // 解析广播数据包格式（BLE 广播数据格式规范）
        int offset = 0;
        while (offset < scanRecordBytes.length) {
            int length = scanRecordBytes[offset] & 0xFF; // 数据段长度
            if (length == 0) break;

            int type = scanRecordBytes[offset + 1] & 0xFF; // 数据类型

            // 检查是否为厂商自定义数据（0xFF 类型）
            if (type == 0xFF) {
                byte[] data = Arrays.copyOfRange(scanRecordBytes, offset + 2, offset + length + 1);
                // 厂商自定义数据格式：2字节厂商ID + 自定义内容
                if (data.length >= 6) {
                    byte[] macData = Arrays.copyOfRange(data, 0, 6);
                    String macString = bytesToHex(macData); // 转为十六进制字符串
                    System.out.println("mac地址:" + macString);
                }

            }

            offset += (length + 1); // 移动到下一段
        }
    }

    public static byte[] hexStringToBytes(String hexString) {
        if (hexString == null || hexString.isEmpty()) {
            return new byte[0];
        }

        // 移除所有空格和分隔符（如 "FF A1 B2" -> "FFA1B2"）
        String cleanedHex = hexString.replaceAll("\\s+", "");

        // 检查是否为有效十六进制字符串
        if (!cleanedHex.matches("[0-9a-fA-F]+")) {
            throw new IllegalArgumentException("Invalid hex string: " + hexString);
        }

        // 补齐偶数长度（例如 "A" -> "0A"）
        if (cleanedHex.length() % 2 != 0) {
            cleanedHex = "0" + cleanedHex;
        }

        byte[] byteArray = new byte[cleanedHex.length() / 2];
        for (int i = 0; i < byteArray.length; i++) {
            int index = i * 2;
            int hexValue = Integer.parseInt(cleanedHex.substring(index, index + 2), 16);
            byteArray[i] = (byte) hexValue;
        }
        return byteArray;
    }


    public  String bytesToHex(byte[] bytes) {
        if (bytes == null){
            return "";
        }
        StringBuilder hexString = new StringBuilder();
        for (byte b : bytes) {
            String hex = Integer.toHexString(0xff & b);
            if (hex.length() == 1) {
                hexString.append('0');
            }
            hexString.append(hex);
        }
        return hexString.toString();
    }
}