ORdner Struktur sowie Beispiel Backend

backend_nodejs/wbs_rechner_express.js

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+const express = require('express');
+const app = express();
+const expressSwagger = require('express-swagger-generator')(app);
+app.use(express.json()); //für das Parsing von JSON-Daten
+
+let options = {
+    swaggerDefinition: {
+        info: {
+            description: 'API Dokumentation',
+            title: 'WBS API',
+            version: '1.0.0',
+        },
+        host: 'localhost:3000',
+        basePath: '/',
+        produces: [
+            "application/json"
+        ],
+        schemes: ['http', 'https']
+    },
+    basedir: __dirname,
+    files: ['./**/*.js']
+};
+expressSwagger(options)
+
+/**
+ * @typedef Income
+ * @property {string} type.required
+ * @property {number} amount.required
+ * @property {string} frequency.required - monthly / quarterly / yearly
+ * @property {number} advertisingCosts.required
+ */
+
+/**
+ * @typedef Person
+ * @property {string} name.required
+ * @property {Array.<Income>} incomes.required
+ */
+
+/**
+ * @typedef Frequency
+ * @property {string} id.required
+ * @property {string} description.required
+ */
+
+
+/**
+ * @route POST /calculate
+ * @group Einkommen - Operationen für Einkommen
+ * @param {Income.model} incomes.body.required - eine neue Person
+ * @returns {object} 200 - Eine Person hinzufügen
+ * @returns {Error}  default - Unerwarteter Fehler
+ */
+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 nicht entsprechend der WBS Berechnung
+    let maxIncome = persons.length * 12000;
+    let wbsGranted = maxIncome <= totalIncome;
+
+    res.send({ wbsGranted: wbsGranted });
+});
+
+/**
+ * @route GET /frequencies
+ * @group Einkommen - Operationen für Einkommen
+ * @returns {Array.<Frequency>} 200 - Eine Liste der Frequenzen abrufen
+ * @returns {Error}  default - Unerwarteter Fehler
+ */
+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);
+});
+
+
+/**
+ * @route GET /types
+ * @group Einkommen - Operationen für Einkommen
+ * @returns {Array.<IncomeType>} 200 - Eine Liste der Einkommensarten
+ * @returns {Error}  default - Unerwarteter Fehler
+ */
+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}...`));