--[[

        bot_opchat.lua v0.04 by blastbeat

        - this script regs an op chat
        - it exports also a module to access the opchat from other scripts

        - changelog 0.04:
          - updated script api, cached table lookups, removed global vars

]]--

--// settings begin //--

local permission = {    -- who is allowed to join the op chat?

    [ 0 ] = false,    -- unreg
    [ 10 ] = false,    -- guest
    [ 20 ] = false,    -- reg
    [ 30 ] = false,    -- vip
    [ 40 ] = false,    -- svip
    [ 60 ] = true,    -- operator
    [ 80 ] = true,    -- admin
    [ 100 ] = true,    -- hubowner

}

local nick = "[ BOT ] OpChat"
local desc = "chatroom for operators"

--// settings end //--

local hub_getbot = hub.getbot
local hub_getuser = hub.getuser
local hub_getusers = hub.getusers

local opchat, err    -- opchat user object

local feed = function( msg, dispatch )    -- ok, this is an ugly hack
    local from, pm
    if dispatch ~= "send" then    -- dispatch is the used send method
        dispatch = "reply"
        pm = opchat or hub_getbot( )    -- lol, maybe the opchat dows not exit, but then an error should be reported below
        from = hub_getbot( ) or opchat    -- maybe the hub bot does not exist
    end
    for sid, user in pairs( hub_getusers( ) ) do    -- send the msg to all ops...
        if permission[ user:getLevel( ) ] and not user:isBot( ) then    -- dont send to bots because of possible stack overflows!
            user[ dispatch ]( nil, msg, from, pm )    -- its maybe confusing, but all objects have no self arg but a first nil arg, so you can use the ":" style
        end
    end
end

local client = function( bot, cmd )
    if cmd:fourcc( ) == "EMSG" then
        local user = hub_getuser( cmd:mySid( ) )
        if not user or user:isBot( ) or not permission[ user:getLevel( ) ] then
            return true
        end
        --local tosid = cmd:np "PM"
        cmd:setnp( "PM", bot:getSid( ) )
        feed( cmd:adcString( ), "send" )
    end
    return true
end

opchat, err = hub.regbot{ nick = nick, desc = desc, client = client }    -- reg the bot in hub; in case of an error, report it because of side effects to other scripts
err = err and error( err )

hub.debug( "** Loaded bot_opchat.lua **" )

--// public //--

return {

    feed = feed,    -- use opchat = hub.import "bot_opchat"; opchat.feed( msg ) in other scripts to send a normal message to the opchat

}