# -*- coding: utf-8 -*-
# Description: squid netdata python.d module
# Author: Pawel Krupa (paulfantom)

from base import NetSocketService

# default module values (can be overridden per job in `config`)
# update_every = 2
priority = 60000
retries = 5

# charts order (can be overridden if you want less charts, or different order)
ORDER = ['clients_net', 'clients_requests', 'servers_net', 'servers_requests']

CHARTS = {
    'clients_net': {
        'options': [None, "Squid Client Bandwidth", "kilobits/s", "clients", "squid.clients.net" "area"],
        'lines': [
            ["client_http_kbytes_in", "in", "incremental", 8, 1],
            ["client_http_kbytes_out", "out", "incremental", -8, 1],
            ["client_http_hit_kbytes_out", "hits", "incremental", -8, 1]
        ]},
    'clients_requests': {
        'options': [None, "Squid Client Requests", "requests/s", "clients", "squid.clients.requests", 'line'],
        'lines': [
            ["client_http_requests", "requests"],
            ["client_http_hits", "hits"],
            ["client_http_errors", "errors", "incremental", -1, 1]
        ]},
    'servers_net': {
        'options': [None, "Squid Server Bandwidth", "kilobits/s", "servers", "squid.servers.net" "area"],
        'lines': [
            ["server_all_kbytes_in", "in", "incremental", 8, 1],
            ["server_all_kbytes_out", "out", "incremental", -8, 1]
        ]},
    'servers_requests': {
        'options': [None, "Squid Server Requests", "requests/s", "servers", "squid.servers.requests", 'line'],
        'lines': [
            ["server_all_requests", "requests"],
            ["server_all_errors", "errors", "incremental", -1, 1]
        ]}
}


class Service(NetSocketService):
    def __init__(self, configuration=None, name=None):
        NetSocketService.__init__(self, configuration=configuration, name=name)
        self.request = ""
        self.host = "localhost"
        self.port = 3128
        self.order = ORDER
        self.definitions = CHARTS

    def _get_data(self):
        """
        Get data via http request
        :return: dict
        """
        try:
            raw = self._get_raw_data().split('\n')
            if "200 OK" not in raw[0]:
                return None
            data = {}
            for row in raw:
                if row.startswith(("client", "server.all")):
                    tmp = row.split("=")
                    data[tmp[0].replace('.', '_').strip(' ')] = int(tmp[1])

            return data
        except (ValueError, AttributeError):
            return None

    def check(self):
        """
        Parse essential configuration, autodetect squid configuration (if needed), and check if data is available
        :return: boolean
        """
        self._parse_config()
        # format request
        req = self.request.decode()
        if not req.startswith("GET"):
            req = "GET " + req
        if not req.endswith(" HTTP/1.0\r\n\r\n"):
            req += " HTTP/1.0\r\n\r\n"
        self.request = req.encode()
        #
        # # autodetect squid
        # if type(self.port) is tuple:
        #     ports = self.port
        #     for port in ports:
        #         self.port = port
        #         urls = ["cache_object://" + self.host + ":" + str(port) + "/counters",
        #                 "/squid-internal-mgr/counters"]
        #         for url in urls:
        #             tmp = "GET " + url + " HTTP/1.0\r\n\r\n"
        #             self.request = tmp.encode()
        #             if self._get_data() is not None:
        #                 return True
        # else:
        if True:
            if self._get_data() is not None:
                return True
            else:
                return False