package com.example.pdaplccontrol;

final class WeightInputParser {

    private WeightInputParser() {
    }

    static short parseKg(String input) {
        if (input == null || input.trim().isEmpty()) {
            throw new IllegalArgumentException("请输入重量");
        }

        int kg;
        try {
            kg = Integer.parseInt(input.trim());
        } catch (NumberFormatException e) {
            throw new IllegalArgumentException("重量必须为整数kg");
        }

        if (kg < PlcConfig.MIN_WEIGHT_KG || kg > PlcConfig.MAX_WEIGHT_KG) {
            throw new IllegalArgumentException("重量范围为 0-30kg");
        }

        return (short) kg;
    }

    static String kgToDisplayText(short weightKg) {
        return String.valueOf(weightKg);
    }
}