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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Plugin to monitor the amount shares to and from the specified nextcloud instance
#
# Parameters understood:
#     config   (required)
#     autoconf (optional - used by munin-config)
#
# Magic markers - optional - used by installation scripts and
# munin-config:
#
#  #%# family=manual
#  #%# capabilities=autoconf
import re
import requests
import sys
import os


class NextcloudShares:
	if (sys.argv.__len__() == 2) and (sys.argv[1] == "config"):
		print('graph_title Nextcloud Shares')
		print('graph_args --base 1024 -l 0')
		print('graph_vlabel number of shares')
		print('graph_info graph showing the number of shares')
		print('graph_category nextcloud')

		print('num_fed_shares_received.label federated shares recieved')
		print('num_fed_shares_received.info current total of federated shares recieved')
		print('num_fed_shares_sent.label federated shares sent')
		print('num_fed_shares_sent.info current total of federated shares sent')
		print('num_shares.label total number of shares')
		print('num_shares.info current over all total of shares')
		print('num_shares_groups.label group shares')
		print('num_shares_groups.info current total of group shares')
		print('num_shares_link.label link shares')
		print('num_shares_link.info current total of shares through a link')
		print('num_shares_link_no_password.label link shares without a password')
		print('num_shares_link_no_password.info current total of shares through a link without a password protection')
		print('num_shares_user.label user shares')
		print('num_shares_user.info current total of user shares')
	elif (sys.argv.__len__() == 2) and (sys.argv[1] == 'autoconf'):
		# check host if env variables are set
		try:
			if None not in {os.environ['url'], os.environ['username'], os.environ['password']}:
				print('yes')
		except KeyError:
			print('no env configuration options are missing')
	else:
		# read the configuration from munin environment
		URL = os.environ['url']
		auth = (os.environ['username'], os.environ['password'])

		# init requests session with specific header and credentials
		s = requests.Session()
		s.auth = auth
		s.headers.update({'Accept': 'application/json'})

		# request data from api
		r = s.get(URL)

		# if status code is successful close connection and continue
		if r.status_code == 200:
			s.close()
			api_response = r.json()
			shares = api_response['ocs']['data']['nextcloud']['shares']

			# use regex to remove permission stats from api response
			reg = re.compile("num.*")
			share_keys = shares.keys()
			sharelist = list(filter(reg.match, share_keys))

			result = list()
			for key in sharelist:
				result.append(str(key) + ".value " + str(shares[key]))
			print("\n".join(result))

		elif r.status_code == 996:
			print('server error')
		elif r.status_code == 997:
			print('not authorized')
		elif r.status_code == 998:
			print('not found')
		else:
			print('unknown error')


if __name__ == "__main__":
	NextcloudShares()
	quit(0)