package dell55AAData;

public class Dell55AA12HighPerf {
    
    // ЭÒé³£Á¿
    @SuppressWarnings("unused")
	private static final String HEADER = "55AA12"; // ЭÒéÍ·
    private static final int MIN_LENGTH = 34; // ×îСÊý¾Ý³¤¶È
    private static final ThreadLocal<ParseResult> RESULT_CACHE = // ½âÎö½á¹û»º´æ
        ThreadLocal.withInitial(ParseResult::new);

    // ½âÎö½á¹ûÀà
    public static class ParseResult { 
        public String tagId; // ±êÇ©ID
        public int sequenceNum; // ÐòÁкÅ
        public int power; // µçÁ¿
        public int vibrationState; // Õñ¶¯×´Ì¬
        public boolean tagRemoved; // ±êÇ©ÒƳý״̬
        public boolean isSleeping; // ÐÝÃß״̬
        public boolean isStatic; // ¾²Ö¹×´Ì¬
        public boolean sosButtonPressed; // SOS°´Å¥×´Ì¬
        public int tagHeight; // ±êÇ©¸ß¶È
        public int anchorCount; // êµãÊýÁ¿
        public String[] anchorIds = new String[0]; // êµãIDÊý×é
        public int[] distances = new int[0]; // ¾àÀëÊý×é
        public int[] anchorPowers = new int[0]; // êµãµçÁ¿Êý×é
        public int[] signalStrengths1 = new int[0]; // ÐźÅÇ¿¶È1
        public int[] signalStrengths2 = new int[0]; // ÐźÅÇ¿¶È2
        
        // ÖØÖ÷½·¨
        public void reset() {
            tagId = "";
            sequenceNum = 0;
            power = 0;
            vibrationState = 0;
            tagRemoved = false;
            isSleeping = false;
            isStatic = false;
            sosButtonPressed = false;
            tagHeight = 0;
            anchorCount = 0;
            // Êý×é±£³Ö³¤¶È£¬Ö»ÖØÖüÆÊý
        }
    }

    /**
     * ½âÎöЭÒéÊý¾Ý
     * @param message ԭʼ16½øÖÆ×Ö·û´®
     * @return ½âÎö½á¹û¶ÔÏó£¨Ḭ̈߳²È«£©
     */
    public static ParseResult parse(String message,String ip,int port) { 
        // ³¤¶ÈУÑé
        if (message == null || message.length() < MIN_LENGTH) {
            return null;
        }
        
        // ЭÒéͷУÑé
        if (!(message.charAt(0) == '5' && 
              message.charAt(1) == '5' && 
              message.charAt(2) == 'A' && 
              message.charAt(3) == 'A' && 
              message.charAt(4) == '1' && 
              message.charAt(5) == '2')) {
            return null;
        }
        
        // »ñÈ¡Ï̱߳¾µØ½á¹û¶ÔÏó
        ParseResult result = RESULT_CACHE.get();
        result.reset();
        
        // »ñÈ¡×Ö·û»º³åÇø
        char[] chars = HexUtils.getThreadLocalBuffer();
        message.getChars(0, Math.min(message.length(), chars.length), chars, 0);
        
        // ½âÎöÊý¾Ý³¤¶È
        int dataLength = (HexUtils.fastHexToByte(chars[6], chars[7]) * 2) + 8;
        if (message.length() != dataLength) {
            return null;
        }
        
        // ½âÎö±êÇ©ÐÅÏ¢
        parseTagInfo(chars, result);
        
        // ½âÎöêµãÐÅÏ¢
        parseAnchorInfo(chars, result);
        
        return result;
    }

    /**
     * ½âÎö±êÇ©ÐÅÏ¢
     */
    private static void parseTagInfo(char[] chars, ParseResult result) {
        // ±êÇ©ID£¨Ð¡¶ËÐò£©
        result.tagId = new String(new char[] { 
                chars[10], chars[11], // ¸ß×Ö½Ú
                chars[8], chars[9]    // µÍ×Ö½Ú
            }); 
        // ÐòÁкţ¨Ð¡¶ËÐò£©
        result.sequenceNum = (HexUtils.fastHexToByte(chars[14], chars[15]) << 8 | 
                            HexUtils.fastHexToByte(chars[12], chars[13]));
        
        // µçÁ¿
        result.power = HexUtils.fastHexToByte(chars[16], chars[17]);
        
        // ״̬±êÖ¾
        int buttonState = HexUtils.fastHexToByte(chars[18], chars[19]);
        result.vibrationState = (buttonState >> 5) & 1;
        result.tagRemoved = ((buttonState >> 3) & 1) == 1;
        result.isSleeping = ((buttonState >> 2) & 1) == 1;
        result.isStatic = ((buttonState >> 1) & 1) == 1;
        result.sosButtonPressed = (buttonState & 1) == 1;
        
        // ±êÇ©¸ß¶È£¨Ð¡¶ËÐò£©
        result.tagHeight = (HexUtils.fastHexToByte(chars[22], chars[23]) << 8 | 
                          HexUtils.fastHexToByte(chars[20], chars[21]));
    }

    /**
     * ½âÎöêµãÐÅÏ¢
     */
    private static void parseAnchorInfo(char[] chars, ParseResult result) {
        // êµãÊýÁ¿
        result.anchorCount = HexUtils.fastHexToByte(chars[32], chars[33]);
        if (result.anchorCount == 0) return;

        // ¶¯Ì¬À©Õ¹Êý×é
        if (result.anchorIds.length < result.anchorCount) {
            result.anchorIds = new String[result.anchorCount];
            result.distances = new int[result.anchorCount];
            result.anchorPowers = new int[result.anchorCount];
            result.signalStrengths1 = new int[result.anchorCount];
            result.signalStrengths2 = new int[result.anchorCount];
        }

        int baseIndex = 34; // êµãIDÆðʼλÖÃ
        int distanceStart = baseIndex + result.anchorCount * 4; // ¾àÀëÆðʼλÖÃ
        int powerStart = distanceStart + result.anchorCount * 4; // µçÁ¿ÆðʼλÖÃ

        // ½âÎöêµãID£¨Ð¡¶ËÐò£©
        for (int i = 0; i < result.anchorCount; i++) {
            int idOffset = baseIndex + i * 4;
            result.anchorIds[i] = new String(new char[]{
                chars[idOffset + 2], // ¸ß×Ö½Ú1
                chars[idOffset + 3], // ¸ß×Ö½Ú2
                chars[idOffset],     // µÍ×Ö½Ú1
                chars[idOffset + 1]  // µÍ×Ö½Ú2
            });
        }

        // ½âÎö¾àÀ루ÓзûºÅÕûÊý´¦Àí£©
        for (int i = 0; i < result.anchorCount; i++) {
            int distOffset = distanceStart + i * 4;
            int distLow = HexUtils.fastHexToByte(chars[distOffset], chars[distOffset + 1]);
            int distHigh = HexUtils.fastHexToByte(chars[distOffset + 2], chars[distOffset + 3]);
            int rawDistance = (distHigh << 8) | distLow;
            result.distances[i] = (rawDistance > 0x7FFF)
                                ? (rawDistance - 0x10000)
                                : rawDistance;
        }

        // ½âÎöêµãµçÁ¿
        for (int i = 0; i < result.anchorCount; i++) {
            int powerOffset = powerStart + i * 2;
            result.anchorPowers[i] = HexUtils.fastHexToByte(chars[powerOffset], chars[powerOffset + 1]);
        }
    }
}