package com.zy.core.constant;


/**
 * 任务下发字段枚举（对应 §2.4）
 */
public enum TaskField {
    ALL("DB13", 0, 12),
    TASK_NUMBER("DB13", 0, 4),
    START_STATION("DB13", 4, 2),
    DEST_STATION("DB13", 6, 2),
    DIRECTION("DB13", 8, 2),
    ROUTE_NUMBER("DB13", 10, 2);

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

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

    public String getAddressPattern() {
        return addressPattern;
    }

    public int getOffset() {
        return offset;
    }

    public int getByteLength() {
        return byteLength;
    }

    /**
     * 根据 DB 块编号和站点偏移生成具体地址
     *
     * @return PLC4X 地址字符串，如 "DB100.DBD0"
     */
    public String buildAddress() {
        return addressPattern + PlcConstant.ADDRESS_CONCATENATION + offset;
    }
}