diff --git a/abgabesystem.py b/abgabesystem.py
new file mode 100644
index 0000000..710beca
--- /dev/null
+++ b/abgabesystem.py
@@ -0,0 +1,183 @@
+#!/usr/bin/env python3
+
+import argparse
+import yaml
+import gitlab
+import datetime
+import logging as log
+import csv
+import secrets
+
+
+class Deadline(yaml.YAMLObject):
+    """A deadline"""
+
+    yaml_tag = 'Deadline'
+
+    def __init__(self, tag, time, ref):
+        self.tag = tag
+        self.time = time
+        self.ref = ref
+
+    def tag(self, project):
+        """Create protected tag on ref for all deadlines that have been
+        reached"""
+
+        try:
+            project.tags.create({
+                'tag_name': self.tag,
+                'ref': self.ref
+            })
+        except gitlab.exceptions.GitlabHttpError as e:
+            log.warn(e)
+
+
+class Course(yaml.YAMLObject):
+    """A course"""
+
+    yaml_tag = 'Course'
+
+    def setup_gitlab_group(self, groups):
+        try:
+            found = groups.list(search=self.name)
+            return found[0]
+        except gitlab.exceptions.GitlabHttpError as e:
+            log.info(e)
+            if e.response_code == 404:
+                gl.groups.create({})
+                path = self.name.replace(' ', '_').lower()
+                group =  gl.groups.create({
+                    'name': self.name,
+                    'path': path
+                })
+                for repo in self.repos:
+                    group.repos.create({
+                        'name': repo,
+                        'namespace_id': group.path,
+                        'visibility': 'internal'
+                    })
+                return group
+            else:
+                raise e
+
+    def __init__(self, name, deadlines, repos):
+        self.name = name
+        self.repos = repos
+        self.deadlines = deadlines
+
+    def projects(self, groups):
+        return groups.list(search=self.name)[0].projects.list()
+
+
+class Student():
+    """A student"""
+
+    def __init__(self, user, mail, name, group):
+        self.user = user
+        self.email = mail
+        self.name = name
+        self.group = group
+
+    def setup_project(self, base, course):
+        """Create user projects as forks from course/solutions in namespace of
+        course and add user as developer (NOT master) user should not be able
+        to modify protected TAG or force-push on protected branch users can
+        later invite other users into their projects"""
+
+        fork = course.group.projects.list(name=self.user)
+        if len(fork) == 0:
+            fork = base.forks.create({
+                'name': self.user,
+                'namespace': base.namspace,
+                'visibility': 'private'
+            })
+
+        fork.members.create({
+            'user_id': self.user,
+            'access_level': gitlab.DEVELOPER_ACCESS
+        })
+
+        return fork
+
+    def setup_ldap_dummy(self, users, provider, basedn):
+        # TODO call from creation of student object()
+
+        """Creates a dummy user for users that do not exist in gitlab
+        but in LDAP and have not logged in yet"""
+
+        users = users.list(search=self.user)
+
+        if len(users) == 0:
+            dummy = users.create({
+                'email': self.email,
+                'username': self.name,
+                'name': self.user,
+                'provider': provider,
+                'skip_confirmation': True,
+                'extern_uid': 'uid=%s,%s' % (self.user, basedn),
+                'password': secrets.token_urlsafe(nbytes=32)
+            })
+
+            return dummy
+        else:
+            return users[0]
+
+    def from_csv(csvfile):
+        reader = csv.DictReader(csvfile, delimiter=';', quotechar='"')
+
+        for line in reader:
+            student = Student(line['Nutzernamen'],
+                              line['E-Mail'],
+                              line['Vorname'] + ' ' + line['Nachname'],
+                              line['Gruppe'])
+            yield student
+
+
+def create_students(gl, conf, args):
+    with open(args.students[0], 'r') as csvfile:
+        for student in Student.from_csv(csvfile):
+            student.setup_ldap_dummy(gl.users, conf['ldap']['provider'], conf['ldap']['basedn'])
+            student.setup_project('solutions', args['course'][0]) #TODO
+            print(student)
+
+
+def create_courses(gl, conf, args):
+    for course in conf['courses']:
+        course.setup_gitlab_group(gl.groups)
+        print(course)
+
+
+def create_deadlines(gl, conf, args):
+    for course in conf['courses']:
+        for deadline in course.deadlines:
+            pass
+            #if deadline.time <= datetime.datetime.now():
+                # deadline has approached
+                # TODO setup cronjob?
+                # deadline.tag(project)
+
+
+if __name__ == '__main__':
+
+    gl = gitlab.Gitlab.from_config()
+    gl.auth()
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--config', type=str, nargs=1, help='path to config file', default='config.yml')
+
+    course_parser = parser.add_subparsers('courses')
+    course_parser.set_defaults(func=create_courses)
+
+    student_parser = parser.add_subparsers('students')
+    student_parser.add_argument('students', desc='Exported CSV file from Stud.IP', nargs=1, type=str)
+    student_parser.add_argument('course', desc='Course for CSV file', nargs=1, type=str)
+    student_parser.set_defaults(func=create_students)
+
+    deadline_parser = parser.add_subparsers('deadlines')
+    deadline_parser.set_defaults(func=create_deadlines)
+
+    args = parser.parse_args()
+
+    with open(args.config, 'r') as conf:
+        conf = yaml.safe_load(conf)
+        args.func(gl, conf, args)
diff --git a/config.yml b/config.yml
new file mode 100644
index 0000000..fe2436f
--- /dev/null
+++ b/config.yml
@@ -0,0 +1,23 @@
+ldap:
+  basedn: "ou=people,dc=tu-bs,dc=de"
+  dummy_user:
+    provider: main
+    skip_confirmation: true
+
+courses:
+  -
+--- !Course
+    name: Programmieren 1
+    repos: [solutions, exercises]
+    deadlines:
+      -
+    --- !Deadline
+        tag: Exercise 1
+        time: 2018-04-01t00:00.00
+        ref: master
+
+      -
+    --- !Deadline
+        tag: Exercise 2
+        time: 2018-04-15t15:00.00
+        ref: master
diff --git a/groupimporter.py b/groupimporter.py
deleted file mode 100644
index ae10e44..0000000
--- a/groupimporter.py
+++ /dev/null
@@ -1,189 +0,0 @@
-import csv
-import argparse
-import gitlab
-
-from mimetypes import guess_type
-
-
-DEFAULT_REPOS = ['solutions', 'exercises']
-BASEDN = 'ou=people,dc=tu-bs,dc=de'
-
-gl = gitlab.Gitlab.from_config()
-gl.auth()
-
-
-def group_name(longname):
-    """Use the group number (located at start of group name)"""
-
-    if longname in ['keine Teilnahme an den Übungen', 'keiner Funktion oder Gruppe zugeordnet', 'Gruppe']:
-        return None
-    else:
-        return longname.split(' ')[0]
-
-
-def parse_groups_csv(csvfile, encoding='utf-8'):
-    """Reads the names of the groups from CSV file and yields the group names
-    """
-
-    with open(csvfile, 'r', encoding=encoding) as lines:
-        """ Get distinct values from first column (groups)"""
-
-        reader = csv.reader(lines, delimiter=';', quotechar='"')
-        zipped = list(zip(*reader))
-
-        for groupname in set(zipped[0]):
-            short_name = group_name(groupname)
-
-            """Discard groups that are None"""
-            if short_name:
-                yield(short_name)
-
-
-def parse_users_csv(csvfile, encoding='utf-8'):
-    """Reads user information from a CSV file and yields id and group"""
-
-    with open(csvfile, 'r', encoding=encoding) as lines:
-        reader = csv.DictReader(lines, delimiter=';', quotechar='"')
-
-        for line in reader:
-            user = object()
-            user.id = line['Nutzernamen']
-            user.email = line['E-Mail']
-            user.name = line['Vorname'] + ' ' + line['Nachname']
-            user.group = group_name(line['Gruppe'])
-
-
-def create_student(user_id, email, tutorial):
-    """Create user and add to tutorial group and workgroup based on preferred Abgabepartner
-    User will later be updated with password from LDAP
-
-    https://gitlab.com/gitlab-org/gitlab-ee/issues/699
-    """
-    pass
-
-
-def create_abgabegruppe(tutorial):
-    """Create a Abgabegruppe"""
-    pass
-
-
-def create_tutorial(course, group):
-    """Creates a group via Gitlab API"""
-
-    # this is the short path, not the full path
-    path = group.replace(' ', '_').lower()
-
-    try:
-        subgroup = gl.groups.create({'name': group, 'path': path, 'parent_id': course.id})
-        return subgroup
-    except gitlab.exceptions.GitlabHttpError as e:
-        print(e)
-
-
-def create_course(course_name):
-
-    courses = gl.groups.list(search=course_name)
-    course = None
-
-    if len(courses) == 0:
-        path = course_name.replace(' ', '_').lower()
-        course = gl.groups.create({'name': course_name, 'path': path})
-    else:
-        course = courses[0]
-
-    return course
-
-
-def create_course_project(name, course):
-
-    try:
-        gl.projects.create({
-            'name': name,
-            'namespace_id': course.id,
-            'visibility': 'internal'
-        })
-    except gitlab.exceptions.GitlabHttpError as e:
-        print(e)
-
-
-def setup_user_project(user, base, course):
-    """Create user projects as forks from course/solutions
-    in namespace of course and add user as developer (NOT master)
-    user should not be able to modify protected TAG or force-push on protected branch
-    users can later invite other users into their projects"""
-
-    fork = course.projects.list(name=user)
-    if len(fork) == 0:
-        fork = base.forks.create({
-            'name': user.id,
-            'namespace': base.namspace,
-            'visibility': 'private'
-        })
-
-    fork.members.create({
-        'user_id': user.id,
-        'access_level': gitlab.DEVELOPER_ACCESS
-    })
-
-    return fork
-
-
-def create_dummy_ldap_user(user):
-    """Creates a dummy user for users that do not exist in gitlab
-    but in LDAP and have not logged in yet"""
-
-    users = gl.users.list(search=user)
-
-    if len(users) == 0:
-        dummy = gl.users.create({
-            'email': user.email,
-            'username': user.name,
-            'name': user.id,
-            'provider': 'main',
-            'skip_confirmation': true,
-            'extern_uid': 'uid=%s,%s' % (user.id, basedn),
-            'password': secrets.token_urlsafe(nbytes=32)
-        })
-
-        return dummy
-    else:
-        return users[0]
-
-
-if __name__ == '__main__':
-
-    parser = argparse.ArgumentParser(description='Import groups and users from data source')
-    parser.add_argument('course', type=str, nargs=1, help='name of the course')
-    parser.add_argument('source', type=str, nargs=1, help='data source')
-    parser.add_argument('--encoding', type=str, nargs=1, help='encoding of source')
-
-    args = parser.parse_args()
-
-    type, _ = guess_type(args.source[0])
-    course = args.course[0]
-
-    course = create_course(course)
-
-    for repo in DEFAULT_REPOS:
-        course_project = create_course_project(repo, course)
-
-    users = None
-
-    if type == 'text/csv':
-        # TODO get functions from API and add hiwis to admins
-        users = parse_users_csv(args.source[0], args.encoding[0])
-
-    elif type == None:
-
-        print('MIME type not recognized')
-
-    for user in users:
-        create_dummy_user_ldap(user)
-        setup_user_project(user, course)
-
-"""TODO
-- add users (LDAP) with custom attribute for group, matrikelnummer
-  + if user exists set custom attributes
-
-- create search for custom attribute (-> checkout repos for group)
-"""