package dell55AAData;

import dell_targets.Dell_BaseStation;

public class Dell55AA02Parser {
	private static final String EXPECTED_HEADER = "55AA02";
	private static final int MIN_LENGTH = 36; // 18×Ö½Ú * 2×Ö·û/×Ö½Ú
	private static final int BASE_ID_START = 8;   // »ùÕ¾IDÆðʼλÖÃ(µÚ4×Ö½Ú)
	private static final int SYNC_STATUS_START = 12; // ͬ²½×´Ì¬ÆðʼλÖÃ(µÚ5×Ö½Ú)
	private static final int PRESSURE_START = 14; // ÆøѹֵÆðʼλÖÃ(µÚ6×Ö½Ú)

	/**
	 * ½âÎö55AA02¸ñʽµÄ»ùÕ¾Êý¾Ý
	 * @param message ½ÓÊÕµ½µÄÊý¾Ý£¨Ê®Áù½øÖÆ×Ö·û´®£©
	 */
	public static void parseAndUpdate(String message) {
		// 1. »ù´¡Ð£Ñé
		if (message == null || message.length() < MIN_LENGTH) {
			return;
		}

		// 2. Í·²¿Ð£Ñ飨¹Ì¶¨¿ªÍ·×Ö·û´®£©
		for (int i = 0; i < EXPECTED_HEADER.length(); i++) {
			if (message.charAt(i) != EXPECTED_HEADER.charAt(i)) {
				return;
			}
		}

		// 3. ½âÎö»ùÕ¾ID£¨Ô­Ê¼Êý¾Ý×Ö·û´®£©
		String baseId = new String(new char[]{
				message.charAt(BASE_ID_START),
				message.charAt(BASE_ID_START + 1),
				message.charAt(BASE_ID_START + 2),
				message.charAt(BASE_ID_START + 3)
		});

		// 4. ½âÎöͬ²½×´Ì¬£¨1×Ö½Ú£©
		char syncChar = message.charAt(SYNC_STATUS_START + 1); // ȡ״̬×Ö·û
		String syncStatus = (syncChar == '0') ? "0" : "1";

		// 5. ½âÎöÆøѹֵ£¨4×Ö½ÚС¶ËÐò£©
		int pressure = 0;
		for (int i = 0; i < 8; i += 2) {
			int idx = PRESSURE_START + i;
			// ʹÓÃHexUtilsµÄ¿ìËÙת»»·½·¨
			int byteValue = HexUtils.fastHexToByte(message.charAt(idx), message.charAt(idx + 1));
			pressure |= (byteValue << (i * 4)); // С¶ËºÏ²¢
		}
		String pressureStr = String.valueOf(pressure);

		// 6. ¸üлùÕ¾Êý¾Ý		
		updateBaseStationData(baseId, syncStatus ,pressureStr);
	}

	/**
	 * ¸üлùÕ¾Êý¾Ý
	 * @param baseId »ùÕ¾ID
	 * @param syncStatus ͬ²½×´Ì¬
	 * @param pressure Æøѹֵ×Ö·û´®
	 */
	private static void updateBaseStationData(String baseId, String syncStatus, String pressure) {
		Dell_BaseStation.updateBaseStationProperty(baseId, "syncStatus", syncStatus);
		Dell_BaseStation.updateBaseStationProperty(baseId, "barometerReading", pressure);
	}

}