zakat-calculator-api/routeService.js

A simple NPM package to calculate Zakat based on different asset types.

exports.calculateZakat = async (zakatData) => {
    try {
        console.log(zakatData);
        
        //const zakatData = req.body;
        const defaultPercentages = {
            money: 0.025, // 2.5%
            gold: 0.025,
            silver: 0.025,
            investments: 0.025,
            properties: 0.025,
            business: 0.025,
            agriculture_rainWater: 0.10, // 10% for rain-fed agriculture
            agriculture_irrigation: 0.05, // 5% for irrigated agriculture
            agriculture_both: 0.075,
            cattle: 0.025,
            otherAssets: 0.025,
        };
        const money = zakatData.money || {};
        const gold = zakatData.gold || {};
        const silver = zakatData.silver || {};
        const investments = zakatData.investments || {};
        const properties = zakatData.properties || {};
        const business = zakatData.business || {};
        const agriculture = zakatData.agriculture || {};
        const cattle = zakatData.cattle || {};
        const payables = zakatData.payables || {};
        const otherAssets = zakatData.otherAssets || {};
        const percentages = zakatData.percentages || defaultPercentages;

        // Calculate total values for each category
        const totalMoney = (money.cashInHands || 0) + (money.cashInBankAccounts || 0);
        money.total = totalMoney;

        // Gold calculation based on carats
        let totalGold = 0;
        if (gold.unitType === "Value") {
            totalGold = (gold.gold24Carats || 0) + (gold.gold22Carats || 0) + (gold.gold18Carats || 0);
        } else if (gold.unitType === "Weight") {
            totalGold = ((gold.gold24Carats || 0) * (gold.goldPrice || 0)) +
                ((gold.gold22Carats || 0) * (gold.goldPrice || 0) * 0.9167) +
                ((gold.gold18Carats || 0) * (gold.goldPrice || 0) * 0.75);
        }
        gold.totalGoldValue = totalGold;

        // Silver calculation based on unit type
        let totalSilver = 0;
        if (silver.unitType === "Value") {
            //  totalSilver = silver.silverWeight || 0;
            totalSilver = silver.silverPrice || 0;
            // totalSilver = (silver.silverWeight || 0) * (silver.silverPrice || 0);
        } else if (silver.unitType === "Weight") {
            totalSilver = (silver.silverWeight || 0) * (silver.silverPrice || 0);
        }
        silver.totalSilverValue = totalSilver;
        const totalInvestments = (investments.shares || 0) + (investments.otherInvestments || 0);
        investments.totalInvest = totalInvestments;
        const totalProperties = (properties.rentalIncome || 0);
        properties.totalProperties = totalProperties;
        const totalBusiness = (business.cash || 0) + (business.goodsStock || 0);
        business.totalBusiness = totalBusiness;
        const totalAgriculture1 = (agriculture.rainWater || 0) +
            (agriculture.irrigation || 0) +
            (agriculture.both || 0);
        const totalAgriculture = (agriculture.rainWater || 0) * (percentages.agriculture_rainWater || 0.10) +
            (agriculture.irrigation || 0) * (percentages.agriculture_irrigation || 0.05) +
            (agriculture.both || 0) * (percentages.agriculture_both || 0.075);
        agriculture.totalAgriculture = totalAgriculture1;
        const totalCattle = (cattle.cows || 0) + (cattle.camels || 0) + (cattle.others || 0);
        cattle.totalCattle = totalCattle;
        const totalOthers = (otherAssets.pension || 0) + (otherAssets.loansGiven || 0) + (otherAssets.otherHoldings || 0);
        otherAssets.totalOthers = totalOthers;
        const totalAssets = money.total + gold.totalGoldValue + silver.totalSilverValue + investments.totalInvest +
            properties.totalProperties + business.totalBusiness + agriculture.totalAgriculture +
            cattle.totalCattle + otherAssets.totalOthers;
        const totalPayables = (payables.creditCard || 0) + (payables.homeLoan || 0) +
            (payables.carLoan || 0) + (payables.businessPayment || 0) +
            (payables.debt_to_family || 0) + (payables.debt_to_other || 0);

        payables.totalPayable = totalPayables
        const finalTotalAssets = totalAssets - totalPayables;
        let payablesPercentage = (totalPayables) * 2.5 / 100
        const nisab = zakatData.nisab || 0;
        let zakatDue = 0;
        if (finalTotalAssets >= nisab) {
            zakatDue += totalMoney * percentages.money;
            zakatDue += totalGold * percentages.gold;
            zakatDue += totalSilver * percentages.silver;
            zakatDue += totalInvestments * percentages.investments;
            zakatDue += totalProperties * percentages.properties;
            zakatDue += totalBusiness * percentages.business;
            zakatDue += totalAgriculture;
            zakatDue += totalCattle * percentages.cattle;
            zakatDue += totalOthers * percentages.otherAssets;
            zakatDue -= payablesPercentage;
            //zakatDue += totalPayables;
        }
        zakatData.totalAssets = finalTotalAssets;
        zakatData.zakatDue = zakatDue;
        return {
            status: 200,
            message: "Zakat Calculated successfully",
            zakatData
        };
    } catch (error) {
        console.log(error);
        
        return { status: 500, message: "Internal Server Error", error };
    }
};