package com.zy.acs.conveyor.core.constant;


/**
 * 站点状态字段枚举（对应 §2.1）
 */
public enum StationStatusField {
    TASK_NUMBER("DB100", 0, 4),          // 任务号，偏移0，4字节
    FINAL_TARGET("DB100", 4, 2),          // 最终目标站，偏移4，2字节
    STATUS_WORD("DB100", 6, 2),           // 状态字，偏移6，2字节
    TASK_WRITABLE("DB100", 8, 2);          // 任务可写区，偏移8，2字节

    private final String addressPattern;
    private final int offset;
    private final int byteLength;

    StationStatusField(String addressPattern, int offset, int byteLength) {
        this.addressPattern = addressPattern;
        this.offset = offset;
        this.byteLength = byteLength;
    }

    /**
     * 根据 DB 块编号和站点偏移生成具体地址
     *
     * @param dbBlock           DB块编号
     * @param stationBaseOffset 站点基址偏移（站点号*站点长度）
     * @return PLC4X 地址字符串，如 "DB100.DBD0"
     */
    public String buildAddress(int dbBlock, int stationBaseOffset) {
        int finalOffset = stationBaseOffset + offset;
        return String.format(addressPattern, dbBlock, finalOffset);
    }

    public String getAddressPattern() {
        return addressPattern;
    }

    public int getOffset() {
        return offset;
    }

    public int getByteLength() {
        return byteLength;
    }
}