diff --git a/README.md b/README.md
index 5d0e7b9..ded9be1 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,11 @@ apply changes
 npx drizzle-kit push --config=drizzle-dev.config.ts
 ```
 
+export sql statements instead of running migration
+```bash
+npx drizzle-kit export --config=drizzle-dev.config.ts
+```
+
 ## SQLite / D1
 Delete view
 ```sql
diff --git a/api/src/db/schema.ts b/api/src/db/schema.ts
index bc56e07..cdb7942 100644
--- a/api/src/db/schema.ts
+++ b/api/src/db/schema.ts
@@ -1,4 +1,4 @@
-import { integer, text, sqliteTable, sqliteView } from "drizzle-orm/sqlite-core";
+import { check, integer, text, sqliteTable, sqliteView } from "drizzle-orm/sqlite-core";
 import { eq, sql } from "drizzle-orm";
 
 // Tables
@@ -48,9 +48,15 @@ export const themepark = sqliteTable('themepark', {
 
 export const user = sqliteTable('user', {
     id: integer().primaryKey({ autoIncrement: true }),
-    username: text().notNull(),
-    isActive: integer({ mode: 'boolean' }).default(false)
-})
+    mail: text().notNull().unique(),
+    isActive: integer({ mode: 'boolean' }).notNull().default(false),
+    createdAt: integer().notNull(),
+    lastActive: integer().notNull()
+},
+(table) => [
+    check("mail_validation", sql`${table.mail} LIKE '%@%'`)
+]
+)
 
 // Views
 export const subscribedThemeparks = sqliteView('subscribed_themeparks').as((qb) =>
diff --git a/api/src/index.ts b/api/src/index.ts
index 767b467..6547f1b 100644
--- a/api/src/index.ts
+++ b/api/src/index.ts
@@ -1,5 +1,6 @@
 import { Hono } from 'hono'
 import { authHandler, initAuthConfig, verifyAuth } from '@hono/auth-js'
+import { getUser } from './lib/user-auth'
 import GitHub from '@auth/core/providers/github'
 import notification from './routes/notification'
 import logbook from './routes/logbook'
@@ -24,9 +25,9 @@ app.use('/auth/*', authHandler())
 app.use('/*', verifyAuth())
 
 // example endpoint
-app.get('/protected', (c) => {
-  const auth = c.get('authUser')
-  return c.json(auth)
+app.get('/protected', async (c) => {
+  const user = await getUser(c);
+  return c.json(user);
 })
 
 // define routes & export app
diff --git a/api/src/lib/user-auth.ts b/api/src/lib/user-auth.ts
new file mode 100644
index 0000000..b5ebec8
--- /dev/null
+++ b/api/src/lib/user-auth.ts
@@ -0,0 +1,70 @@
+import { getDbContext } from "../db/client";
+import { Context } from "hono";
+import { UserSelect } from "../types/user";
+import { user } from "../db/schema";
+import { like } from "drizzle-orm";
+import { DrizzleD1Database } from "drizzle-orm/d1";
+import { MissingMailError, UserInactiveError } from "../types/error";
+
+/**
+ * Returns the details of a user from the given context
+ * @param c Request context
+ * @returns Object of the user details as type UserSelect
+ */
+export async function getUser(c: Context): Promise<UserSelect>{
+    const db = getDbContext(c);
+    const auth = c.get('authUser');
+    if(!auth.session.user || !auth.session.user.email) throw new MissingMailError();
+
+    const currentUser: UserSelect = c.get('currentUser');
+    if(currentUser) return currentUser;
+
+    const mail = auth.session.user.email;
+
+    let userData: UserSelect[];
+    try{
+        userData = await db.selectDistinct().from(user).limit(1).where(like(user.mail, mail));
+
+    }
+    catch(e){
+        throw new Error(`Database error: ${e}`);
+    }
+
+    const dbResult = userData[0] ?? await createUser(db, mail);
+    if(!dbResult.isActive) throw new UserInactiveError();
+
+    c.set('currentUser', dbResult);
+    return dbResult;
+}
+
+/**
+ * Creates a new user in the DB from the given context
+ * @param c Request context
+ * @returns The created user as Object of type UserSelect
+ */
+async function createUser(db: DrizzleD1Database, userMail: string): Promise<UserSelect>{
+    let userData: UserSelect[];
+
+    try{
+        userData = await db.insert(user).values(
+            {
+                mail: userMail,
+                isActive: true,
+                createdAt: now(),
+                lastActive: now()
+            }
+        ).returning();
+
+    }
+    catch(e){
+        throw new Error(`Database error: ${e}`);
+    }
+
+    return userData[0];
+}
+
+/**
+ * Getting the current time
+ * @returns Current unix timestamp
+ */
+const now = () => Math.floor(Date.now() / 1000);
diff --git a/api/src/types/error.ts b/api/src/types/error.ts
new file mode 100644
index 0000000..fa072b6
--- /dev/null
+++ b/api/src/types/error.ts
@@ -0,0 +1,13 @@
+import { HTTPException } from "hono/http-exception";
+
+export class UserInactiveError extends HTTPException{
+    constructor(){
+        super(403, { message: 'User is currently disabled.' })
+    }
+}
+
+export class MissingMailError extends HTTPException{
+    constructor(){
+        super(400, { message: 'Mail address is missing in authorizaton header.' })
+    }
+}
\ No newline at end of file