wbs_rechner/backend_nodejs/wbs_rechner_express.js

const express = require('express');
const app = express();
app.use(express.json()); //für das Parsing von JSON-Daten


app.post('/calculate', (req, res) => {
    let totalIncome = 0;
    const persons = req.body;
    for (const person of persons) {
        for (const income of person.incomes) {
            let annualIncome = income.amount * income.frequency;
            annualIncome -= income.advertisingCosts;
            totalIncome += annualIncome;
        }
    }

    //Beispiel Berechnung entspricht nicht der WBS Berechnung
    let maxIncome = persons.length * 12000;
    let wbsGranted = maxIncome <= totalIncome;

    res.send({ wbsGranted: wbsGranted });
});

app.get('/frequencies', (req, res) => {
    const frequencies = [
        { value: 365, description: 'täglich' },
        { value: 12, description: 'monatlich' },
        { value: 4, description: 'vierteljährlich' },
        { value: 1, description: 'jährlich' }
        //usw...
    ];
    res.send(frequencies);
});

app.get('/types', (req, res) => {
    const types = [
        { value: 'work', description: 'als Arbeitnehmer' },
        { value: 'pensioner', description: 'als Rentner' },
        { value: 'social', description: 'Einnahme aus Sozialeistungen' },
        { value: 'entertains', description: 'Unterhalt' }
        //usw...
    ];
    res.send(frequencies);
});

const port = process.env.PORT || 3000;
app.listen(port, () => console.log(`Server läuft auf Port ${port}...`));