Add support for listing chats and users.

Description

Add support for listing users end endpoints.

Proposal

module code (version beta)

-- Module for Prosody IM
-- Copyright (C) 2020 CI Task
--

local json = require "util.json";
local iterators = require "util.iterators";
local array = require"util.array";
local wrap_async_run = module:require "util".wrap_async_run;

local get_room_from_jid = module:require "util".get_room_from_jid;

function get_field(data, field_name)
    if data[field_name] then
        return data[field_name];
    end;
    return {}
end;


function handle_get_rooms (event)
    local rooms = {};

    rooms["rooms"] = {};
    
    for key, value in pairs(prosody.full_sessions) do
        for key, value in pairs(get_field(value, 'directed')) do
            rooms["rooms"][string.gmatch(key, "(.*)/")()] = {};
        end
    end
    rooms["rooms_count"] = iterators.count(pairs(rooms["rooms"]));

    for key, value in pairs(rooms["rooms"]) do
        local room = get_room_from_jid(key);
        local occupants = room._occupants;
        value["users"] = array();
		if occupants then
			value["user_count"] = iterators.count(room:each_occupant());
            for _, occupant in room:each_occupant() do
                local nick;
                local email;
                local jid;
                local affiliation;
                for pr_jid, pr in occupant:each_session() do
                    jid = pr_jid;
                    affiliation = room:get_affiliation(occupant.nick);
					nick = pr:get_child_text("nick", "http://jabber.org/protocol/nick");
					email = pr:get_child_text("email");
                end
                
                value["users"]:push({
                    jid = occupant.nick,
                    jid2 = jid,
                    affiliation = affiliation,
                    email = email,
                    display_name = nick
                })
			end
		end
    end

    return json.encode(rooms);
end;

function module.load()
    module:depends("http");
	module:provides("http", {
		default_path = "/";
		route = {
            ["GET rooms"] = function (event) return wrap_async_run(event,handle_get_rooms); end;
		};
	});
end

example output

{
    "rooms": {
        "app1@muc.meet.jitsi": {
            "user_count": 2,
            "users": [
                {
                    "display_name": "korthalsp",
                    "email": "adres@ustawiony.w.gui",
                    "jid": "app1@muc.meet.jitsi/04ec24f7",
                    "jid2": "sqmg1whvfajs8sna@guest.meet.jitsi/AyRhCDW9"
                },
                {
                    "jid": "app1@muc.meet.jitsi/focus",
                    "jid2": "focus@auth.meet.jitsi/focus92606046946366"
                }
            ]
        },
        "app3@muc.meet.jitsi": {
            "user_count": 2,
            "users": [
                {
                    "jid": "app3@muc.meet.jitsi/focus",
                    "jid2": "focus@auth.meet.jitsi/focus92606046946366"
                },
                {
                    "display_name": "gosc",
                    "jid": "app3@muc.meet.jitsi/5722ea9d",
                    "jid2": "bofurpwrrotym3vg@guest.meet.jitsi/XeriJisT"
                }
            ]
        },
        "app@muc.meet.jitsi": {
            "user_count": 2,
            "users": [
                {
                    "jid": "app@muc.meet.jitsi/focus",
                    "jid2": "focus@auth.meet.jitsi/focus92606046946366"
                },
                {
                    "display_name": "korthalsp",
                    "email": "adres@ustawiony.w.gui",
                    "jid": "app@muc.meet.jitsi/10c31110",
                    "jid2": "pdzxeocm93wfxexe@guest.meet.jitsi/n17V_qbq"
                }
            ]
        },
        "jvbbrewery@internal-muc.meet.jitsi": {
            "user_count": 2,
            "users": [
                {
                    "jid": "jvbbrewery@internal-muc.meet.jitsi/focus",
                    "jid2": "focus@auth.meet.jitsi/focus92606046946366"
                },
                {
                    "jid": "jvbbrewery@internal-muc.meet.jitsi/b89beabb4f9e",
                    "jid2": "jvb@auth.meet.jitsi/flmelkY2"
                }
            ]
        }
    },
    "rooms_count": 4
}

Personal suggetion to output:

• We should filter *@internal-muc.meet.jitsi (may be needed only for debuging during scaling of JVB)
• We should filter focus user (Increases number of room members by 1)
• We should display jid2 as jid (this is user's login in jitsi, may be usefull if we somehow solve issue with logged users use "their" guest account in conference
• we should not display jid since it is only id in chat

Links / references