Function getTotalWeight

frontend/src/lib/utils/weight.ts:17–57

(unit: WeightUnit, items: (PackItem | Item)[])

};

export const getTotalWeight = (unit: WeightUnit, items: (PackItem | Item)[]): AggregateWeightProps => {
    function reducer(acc: { include: number, exclude: number }, item: PackItem | Item) {
        const isWorn = 'packItem' in item ? item.packItem.worn : false;
        const quantity = 'packItem' in item ? item.packItem.quantity : 1;
        const { weight, weight_unit, Category } = item;

        // no weight unit specified
        if (!weight_unit) return acc;

        const conversionValue = converter(weight).from(unitDict[weight_unit]).to(unitDict[unit]);
        const convertedWeight = parseFloat(conversionValue);

        if (Category.exclude_weight) {
             return { ...acc, exclude: acc.exclude + convertedWeight * quantity };
        }

        if (isWorn) {
            return { ...acc, include: acc.include + convertedWeight * (quantity - 1), exclude: acc.exclude + convertedWeight };
        }

        return { ...acc, include: acc.include + convertedWeight * quantity };
    }

    const { include, exclude } = items.reduce(reducer, { include: 0, exclude: 0 });
    const total = include + exclude;

    return {
        included: {
            value: include,
            label: include.toFixed(2)
        },
        excluded: {
            value: exclude,
            label: exclude.toFixed(2)
        },
        total: {
            value: total,
            label: total.toFixed(2)
        }
    }
};

export const getItemWeight = (unit: WeightUnit, item: PackItem | Item): WeightProps => {
    const { weight, weight_unit } = item;