def ims():
"""
Get ims categories given the level and type
"""
logger.info("Fetching Catalogue items per retailer")
try:
ctype = request.args.get('type') or 'atc'
levels = request.args.get('levels').split(",") or [3, 4]
nested = request.args.get('nested') == '1' or False
except:
raise errors.ApiError('invalid_data_type',
"Query params with wrong data types!")
# Call function to obtain items from certain retailer
categories = Category.get_ims(ctype=ctype, levels=levels, nested=nested)
return jsonify(categories)
