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				https://gitlab.ub.uni-bielefeld.de/sfb1288inf/nopaque.git
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	strictly use socket.io class based namespaces
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		@@ -1,47 +0,0 @@
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from flask_login import current_user
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from flask_socketio import join_room, leave_room
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from app import hashids, socketio
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from app.decorators import socketio_login_required
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from app.models import User
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@socketio.on('GET /users/<user_id>')
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@socketio_login_required
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def get_user(user_hashid):
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    user_id = hashids.decode(user_hashid)
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    user = User.query.get(user_id)
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    if user is None:
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        return {'status': 404, 'statusText': 'Not found'}
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    if not (user == current_user or current_user.is_administrator):
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        return {'status': 403, 'statusText': 'Forbidden'}
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    return {
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        'body': user.to_json_serializeable(backrefs=True, relationships=True),
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        'status': 200,
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        'statusText': 'OK'
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    }
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@socketio.on('SUBSCRIBE /users/<user_id>')
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@socketio_login_required
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def subscribe_user(user_hashid):
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    user_id = hashids.decode(user_hashid)
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    user = User.query.get(user_id)
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    if user is None:
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        return {'status': 404, 'statusText': 'Not found'}
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    if not (user == current_user or current_user.is_administrator):
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        return {'status': 403, 'statusText': 'Forbidden'}
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    join_room(f'/users/{user.hashid}')
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    return {'status': 200, 'statusText': 'OK'}
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@socketio.on('UNSUBSCRIBE /users/<user_id>')
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@socketio_login_required
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def unsubscribe_user(user_hashid):
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    user_id = hashids.decode(user_hashid)
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    user = User.query.get(user_id)
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    if user is None:
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        return {'status': 404, 'statusText': 'Not found'}
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    if not (user == current_user or current_user.is_administrator):
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        return {'status': 403, 'statusText': 'Forbidden'}
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    leave_room(f'/users/{user.hashid}')
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    return {'status': 200, 'statusText': 'OK'}
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