Add scheduler.

app/__init__.py

+from apscheduler.schedulers.background import BackgroundScheduler
 from config import config
 from flask import Flask
 from flask_login import LoginManager
@@ -6,11 +7,14 @@ from flask_sqlalchemy import SQLAlchemy
 
 
 db = SQLAlchemy()
-mail = Mail()
 
 login_manager = LoginManager()
 login_manager.login_view = 'auth.login'
 
+mail = Mail()
+
+background_scheduler = BackgroundScheduler()
+
 
 def create_app(config_name):
     app = Flask(__name__)
@@ -27,4 +31,9 @@ def create_app(config_name):
     from .main import main as main_blueprint
     app.register_blueprint(main_blueprint)
 
+    from .scheduler import scheduler as scheduler_blueprint
+    app.register_blueprint(scheduler_blueprint, url_prefix='/scheduler')
+
+    background_scheduler.start()
+
     return app

app/scheduler/__init__.py

+from flask import Blueprint
+
+scheduler = Blueprint('scheduler', __name__)
+
+from . import views

app/scheduler/views.py

+from flask import render_template
+from . import scheduler
+from flask_login import current_user, login_required
+from .. import background_scheduler
+import json
+
+
+@scheduler.route('/')
+@login_required
+def schedule():
+    job = {
+        'creator': current_user.id,
+        'files': ['file_1', 'file_2', 'file_3'],
+        'service': 'ocr',
+        'args': {
+            'lang': 'deu'
+        }
+    }
+    job = background_scheduler.add_job(print, trigger='date', args=[job])
+    print(job)
+    return 'job'