Added Backend

backend/src/utils/helpers.ts

@@ -0,0 +1,106 @@
+// 🔧 Hilfsfunktionen
+import { FastifyInstance } from "fastify"
+import { eq, ilike, and } from "drizzle-orm"
+
+import { contacts, customers } from "../../db/schema"
+
+// -------------------------------------------------------------
+//  Extract Domain
+// -------------------------------------------------------------
+export function extractDomain(email: string) {
+    if (!email) return null
+    const parts = email.split("@")
+    return parts.length === 2 ? parts[1].toLowerCase() : null
+}
+
+// -------------------------------------------------------------
+//  Kunde oder Kontakt anhand E-Mail oder Domain finden
+// -------------------------------------------------------------
+export async function findCustomerOrContactByEmailOrDomain(
+    server: FastifyInstance,
+    fromMail: string,
+    tenantId: number
+) {
+    const sender = fromMail.toLowerCase()
+    const senderDomain = extractDomain(sender)
+    if (!senderDomain) return null
+
+    // 1️⃣ Direkter Match über Contacts (email)
+    const contactMatch = await server.db
+        .select({
+            id: contacts.id,
+            customer: contacts.customer,
+        })
+        .from(contacts)
+        .where(
+            and(
+                eq(contacts.email, sender),
+                eq(contacts.tenant, tenantId)
+            )
+        )
+        .limit(1)
+
+    if (contactMatch.length && contactMatch[0].customer) {
+        return {
+            customer: contactMatch[0].customer,
+            contact: contactMatch[0].id,
+        }
+    }
+
+    // 2️⃣ Kunden anhand Domain vergleichen
+    const allCustomers = await server.db
+        .select({
+            id: customers.id,
+            infoData: customers.infoData,
+        })
+        .from(customers)
+        .where(eq(customers.tenant, tenantId))
+
+    for (const c of allCustomers) {
+        const info = c.infoData || {}
+
+        // @ts-ignore
+        const email = info.email?.toLowerCase()
+        //@ts-ignore
+        const invoiceEmail = info.invoiceEmail?.toLowerCase()
+        const emailDomain = extractDomain(email)
+        const invoiceDomain = extractDomain(invoiceEmail)
+
+        if (
+            sender === email ||
+            sender === invoiceEmail ||
+            senderDomain === emailDomain ||
+            senderDomain === invoiceDomain
+        ) {
+            return { customer: c.id, contact: null }
+        }
+    }
+
+    return null
+}
+
+// -------------------------------------------------------------
+//  getNestedValue (für Sortierung & Suche im Backend)
+// -------------------------------------------------------------
+export function getNestedValue(obj: any, path: string): any {
+    return path
+        .split(".")
+        .reduce((acc, part) => (acc && acc[part] !== undefined ? acc[part] : undefined), obj)
+}
+
+// -------------------------------------------------------------
+//  compareValues (Sortierung für paginated)
+// -------------------------------------------------------------
+export function compareValues(a: any, b: any): number {
+    if (a === b) return 0
+    if (a == null) return 1
+    if (b == null) return -1
+
+    // String Compare
+    if (typeof a === "string" && typeof b === "string") {
+        return a.localeCompare(b)
+    }
+
+    // Numerisch
+    return a < b ? -1 : 1
+}