#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import re
import logging

from packaging import version
from api import EjabberdApi

class EjabberdCtl(EjabberdApi):


    @property
    def verstring(self):
        if self._login is not None:
            ver_str = re.compile('([1-9][0-9.]+(?![.a-z]))\\b')
            status = self.cmd('status', {})

            # matches
            try:
                tmp = ver_str.findall(status)[0]
            # raise SystemExit code 17 if no status message is received
            except TypeError:
                raise SystemExit(17)

            # return parsed version string
            logging.debug(f"fetch version: {tmp}")
            return version.parse(tmp)

        return None

    def fetch_onlineuser(self):
        tmp = self.cmd("connected_users_info", {})
        if "connected_users_info" not in tmp:
            return tmp
        data = []
        for c in tmp["connected_users_info"]:
            if "session" not in c:
                continue
            user = {}
            for attrs in c["session"]:
                for k, v in attrs.items():
                    user[k] = v
            data.append(user)
        return data

    def fetch_nodes(self):
        result = self.cmd("list_cluster", {})
        if "nodes" not in result:
            return result
        data = []
        for node in result["nodes"]:
            data.append(node["node"])
        return data

    def fetch_vhosts(self):
        result = self.cmd("registered_vhosts", {})
        if "vhosts" not in result:
            return result
        data = []
        for vhost in result["vhosts"]:
            data.append(vhost["vhost"])
        return data

    def fetch_s2s_in(self):
        result = self.cmd("incoming_s2s_number", {})
        if "s2s_incoming" not in result:
            return result
        return result["s2s_incoming"]

    def fetch_s2s_out(self):
        result = self.cmd("outgoing_s2s_number", {})
        if "s2s_outgoing" not in result:
            return result
        return result["s2s_outgoing"]

    def fetch_uptime(self):
        result = self.cmd("stats", {"name": "uptimeseconds"})
        if "stat" in result:
            return result["stat"]

    def fetch_processes(self):
        result = self.cmd("stats", {"name": "processes"})
        if "stat" in result:
            return result["stat"]

    def fetch_registered_count(self, vhost=None):
        if vhost is None:
            result = self.cmd("stats", {"name":"registeredusers"})
            if "stat" in result:
                return result["stat"]
        else:
            result = self.cmd("stats_host", {"name":"registeredusers", "host": vhost})
            if "stat" in result:
                return result["stat"]

    def fetch_muc_count(self, vhost=None, muc_host="conference"):
         host = "global"
         if vhost is not None:
             if self.verstring.major >= 19:
                 host = '.'.join([muc_host, vhost])
             else:
                 host = vhost
         result = self.cmd("muc_online_rooms", {"host": host})
         if "rooms" in result:
             return len(result["rooms"])
         return len(result)