commands.lua

--List of files to load
dofile("tableSave.lua")
math.randomseed(os.time())
commands = {}
allCommands = {}
local stepcount=0
local cmdcount = 0
local function infhook()
	stepcount = stepcount+1
	if stepcount>100000 then
		stepcount=0
		debug.sethook()
		error("Break INF LOOP")
	else
		return
	end
end
function add_cmd(f, name, lvl, help, shown, aliases)
	if type(f)~="function" then return end
	lvl = commandPermissions[name] or lvl
	allCommands[name]={["name"]=name,["f"]=f,["level"]=lvl,["helptext"]=help,["show"]=shown}
	commands[name]=allCommands[name]
	if aliases then
		for k,v in pairs(aliases) do
			allCommands[v] = {["name"]=name,["f"]=f,["level"]=lvl,["helptext"]=help,false}
			commands[v]=allCommands[v]
		end
	end
end

--Helper to return user object from a name
function getUserFromNick(nick, normalize)
	if not nick then return end
	nick = nick:lower()
	for k,v in pairs(irc.channels) do
		if v and v.users then
			for k2,v2 in pairs(v.users) do
				if v2 and v2.nick:lower() == nick then
					if normalize then
						return normalizeHost(v2)
					end
					return v2
				end
			end
		end
	end
end

-- Hack to change irccloud user hosts to something static
function normalizeHost(usr)
	if usr and usr.host and usr.host:find("gateway/web/irccloud.com/x%-%a+") then
		copy = {}
		for k,v in pairs(usr) do
			copy[k] = v
		end
                copy.host = "gateway/web/irccloud.com/"..copy.username
		return copy
        end
	return usr
end

--Load all plugins in plugins/ here
local listcmd = WINDOWS and "dir /b" or "ls"
local pluginList = io.popen(listcmd.." \"plugins\"")
for file in pluginList:lines() do
	if file:sub(#file-3,#file) == ".lua" then
		local s,e = pcall(dofile, "plugins/"..file)
		if not s then
			if config.logchannel then
				ircSendChatQ(config.logchannel, e)
			end
			print("Error loading plugins/"..file..": "..e)
		else
			print("Loaded plugins/"..file)
		end
	end
end

--CORE FUNCTIONS HERE

local function userstatus(usr,chan,msg,args)
	if chan:sub(1,1)~="#" then return "Be in chan idiot" end
	if irc.channels[chan].users[msg] then
		local info = msg.." on "..chan
		if irc.channels[chan].users[msg].access then
			info = info.." has "..irc.channels[chan].users[msg].access
		end
		ircSendChatQ(chan,info)
	end
end
add_cmd(userstatus,"userinfo",101,"Test info about someone",false)

--DISABLE a command for the bot
local function disable(usr,chan,msg,args)
	if not msg then return "Usage: '/disable <cmd> [<cmd2> ...]'" end
	if args[1]=="all" then
		for k,v in pairs(commands) do
			if k~="enable" then commands[k]=nil end
		end
		return "Disabled all"
	else
		local t={}
		for i=1,#args do
			local dcmd = args[i]:lower()
			if dcmd~="enable" and commands[dcmd] then
				commands[dcmd]=nil
				table.insert(t,dcmd)
			end
		end
		return "Disabled: "..table.concat(t," ")
	end
end
add_cmd(disable,"disable",100,"Disable a command for the bot, '/disable <cmd> [<cmd2> ...]'",true)

--ENABLE a command previously disabled
local function enable(usr,chan,msg,args)
	if not msg then return "Usage: '/enable <cmd> [<cmd2> ...]'" end
	if args[1]=="all" then
		for k,v in pairs(allCommands) do
			if not commands[k] then commands[k]=v end
		end
		return "Enabled all"
	else
		local t={}
		for i=1,#args do
			local ecmd = args[i]:lower()
			if not commands[ecmd] and allCommands[ecmd] then
				commands[ecmd]=allCommands[ecmd]
				table.insert(t,ecmd)
			end
		end
		return "Enabled: "..table.concat(t," ")
	end
end
add_cmd(enable,"enable",100,"Enables a command previously disabled, '/enable <cmd> [<cmd2> ...]'",true)

--QUIT
local function suicide(usr,chan,msg)
	ircSendRawQ("QUIT :moo")
	shutdown = true;
end
add_cmd(suicide,"suicide",101,"Quits the bot",true,{"quit","die"})

--PING
local function ping(usr,chan,msg)
	return "pong"
end
add_cmd(ping,"ping",0,"pong",true)

--DO
local function dothis(usr,chan,msg) --fix DO and ME with filters
	if msg then return "\001ACTION does "..msg.."\001",true end
end
add_cmd(dothis,"do",0,"Performs an action, '/do <text>'",true)
--ME
local function methis(usr,chan,msg)
	if msg then return "\001ACTION "..msg.."\001",true end
end
add_cmd(methis,"me",0,"Performs an action, '/me <text>'",true)

--SNEAAK
local function sneaky(usr,chan,msg)
	return "You found me!"
end
add_cmd(sneaky,"./",0,nil,false)
local function sneaky2(usr,chan,msg)
	ircSendChatQ(usr.nick,"1 point gained")
	return nil
end
add_cmd(sneaky2,"./moo",0,nil,false)
local function sneaky3(usr,chan,msg)
	return "MooOoOoooOooo"
end
add_cmd(sneaky3,"moo",0,nil,false)

--RELOAD files
local function reload(usr,chan,msg,args)
	if not args[1] then args[1]="hooks" args[2]="commands"
	else
		if getPerms(usr.host)<101 then return "You can't use args" end
	end
	local rmsg=""
	for k,v in pairs(args) do
		local s,r = pcall(dofile,v..".lua")
		if s then
			rmsg = rmsg .. "Loaded: "..v.." "
		elseif r:find("No such file or directory") then
			s,r = pcall(dofile,"plugins/"..v..".lua")
			if s then
				rmsg = rmsg .. "Loaded: "..v.." "
			else
				rmsg = rmsg .. r .. " "
			end
		else
			rmsg = rmsg .. r .. " "
		end
	end
	return rmsg
end
add_cmd(reload,"load",100,"Loads file(s), '/load [<file1>] [<files...>]', Only admin can specify file names.",true,{"reload"})

--ECHO
local function echo(usr,chan,msg)
	return msg,true
end
add_cmd(echo,"echo",0,"Replies same text, '/echo <text>'",true,{"say"})

--LIST
local function list(usr,chan,msg,args)
	local perm,chanPerm = tonumber(args[1]) or getPerms(usr.host), not tonumber(args[1]) and getPerms(usr.host,chan)
	local t = {}
	local cmdcount=0
	for k,v in pairs(commands) do
		if (chanPerm or perm)>=getCommandPerms(k, chan) and commands[k].show then
			cmdcount=cmdcount+1
			t[cmdcount]=k
		end
	end
	table.sort(t,function(x,y)return x<y end)
	return "Commands("..perm..(chanPerm and perm~=chanPerm and ":"..chanPerm or "").."): " .. table.concat(t,", ")
end
add_cmd(list,"list",0,"Lists commands for the specified level, or your own, '/list [<level>]'",true,{"ls","commands"})

local function changeLevel(usr,chan,msg,args,isignore)
	local channel, noescape = nil, false
	if #args > 1 and args[1]:sub(1,1) == "#" then
		channel = args[1]
		table.remove(args, 1)
	end
	if args[1] == "-noescape" then
		noescape = true
		table.remove(args, 1)
	end
	if not args[1] or (not isignore and not args[2]) then
		if isignore then
			return "Usage: '/ignore [<channel>] [-noescape] <user/host> [<seconds>]'"
		else
			return "Usage: '/chmod [<channel>] [-noescape] <user/host> <level>'"
		end
	end
	local user, seconds, host = args[1], tonumber(args[2]), nil
	if irc.channels[chan].users[user] then
		host = irc.channels[chan].users[user].host
	else
		local found = false
		for k,v in pairs(irc.channels) do
			if irc.channels[k].users[user] then
				host = irc.channels[k].users[user].host
				found = true
				break
			end
		end
		if not found then
			host = user
		end
	end
	if not noescape then
		host = host:gsub("([%.%-%+%*%%%?%(%)%[%]%^%$])","%%%1")
	end
	local perm, chanPerm, otherPerm = getPerms(usr.host), getPerms(usr.host, channel), getPerms(host, channel)
	if otherPerm >= perm and not channel then
		if isignore then
			return "You cannot ignore "..args[1]
		else
			return "You cannot modify the permissions for "..args[1]
		end
	elseif otherPerm >= chanPerm and channel then
		if isignore then
			return "You cannot ignore "..args[1].." in "..channel
		else
			return "You cannot modify the permissions for "..args[1].." in "..channel
		end
	elseif perm < getCommandPerms(isignore and "ignore" or "chmod") and not channel then
		if isignore then
			return "You cannot ignore people globally"
		else
			return "You cannot set permission levels globally"
		end
	elseif chanPerm < getCommandPerms(isignore and "ignore" or "chmod", channel) then
		if isignore then
			return "You cannot ignore people in "..channel
		else
			return "You cannot set permission levels in "..channel
		end
	elseif isignore then
		if otherPerm == -1 then
			return args[1].." is already ignored"
		end
	else
		if channel and seconds > chanPerm then
			return "You can't set permissions that high in "..channel
		elseif (not channel and seconds > perm) or seconds > 99 then
			return "You can't set permissions that high"
		end
	end
	if channel then
		if not channelPermissions[channel] then
			channelPermissions[channel] = {}
		end
		if isignore and seconds then
			local oldlevel = channelPermissions[channel][host]
			addTimer(function() channelPermissions[channel][host] = oldlevel end, seconds, chan, usr.nick)
		end
		channelPermissions[channel][host] = isignore and -1 or seconds
		if isignore then
			return "ignored "..host.." in "..channel..(seconds and " for "..seconds.." second"..(seconds==1 and "" or "s") or "")
		else
			return "permissions for "..host.." in "..channel.." changed to "..seconds
		end
	else
		if isignore and seconds then
			local oldlevel = permissions[host]
			addTimer(function() permissions[host] = oldlevel end, seconds, chan, usr.nick)
		end
		permissions[host] = isignore and -1 or seconds
		if isignore then
			return "ignored "..host..(seconds and " for "..seconds.." second"..(seconds==1 and "" or "s") or "")
		else
			return "permissions for "..host.." changed to "..seconds
		end
	end
end
local function chmod(usr,chan,msg,args)
	return changeLevel(usr, chan, msg, args, false)
end
add_cmd(chmod,"chmod",40,"Sets permission levels on a user, '/chmod [<channel>] [-noescape] <user/host> <level>'",true)
local function ignore(usr,chan,msg,args)
	return changeLevel(usr, chan, msg, args, true)
end
add_cmd(ignore,"ignore",40,"Sets a global or channel ignore on a user, '/ignore [<channel>] [-noescape] <user/host> [<seconds>]'",true)

--hostmask
local function getHost(usr,chan,msg,args)
	if not args[1] then return usr.host end
	local user = getUserFromNick(args[1])
	if not user then
		return "Invalid User"
	end
	return user.host
end
add_cmd(getHost,"host",0,"The host for a user, '/host <name>' Use /hostmask for full hostmask",false)

local function getHostmask(usr,chan,msg,args)
	if not args[1] then return usr.fullhost end
	local user = getUserFromNick(args[1])
	if not user then
		return "Invalid User"
	end
	return user.fullhost
end
add_cmd(getHostmask,"hostmask",0,"The hostmask for a user, '/hostmask <name>' Use /host for short host",false)

--username, for nesting
local function getName(usr,chan,msg,args)
	return usr.nick
end
add_cmd(getName,"nick",0,"Your nick, '/nick'",false)

--channel name, for nesting
local function getChan(usr,chan,msg,args)
	return chan
end
add_cmd(getChan,"chan",0,"The current channel, '/chan'",false)

--LUA full access
local function lua2(usr,chan,msg,args)
	local e,err = loadstring(msg, "..")
	if e then
		debug.sethook(infhook,"l")
		local s,r = pcall(e)
		debug.sethook()
		stepcount=0
		if s then
			local str = tostring(r) 
			return str:gsub("[\r\n]"," ")
		else
			return "ERROR: " .. r
		end
		return
	end
	return "ERROR: " .. err
end
add_cmd(lua2,"..",101,"Runs full lua code, '/lua <code>'",false)

--HELP
local function help(usr,chan,msg)
	msg = msg or "help"
	msg = msg:lower()
	if commands[msg] then
		if commands[msg].helptext then
			return msg ..": ".. commands[msg].helptext
		end
	end
	return "No help for "..msg.." found!"
end
add_cmd(help,"help",0,"Returns hopefully helpful information, '/help <cmd>'",true)

--UNHELP, no idea
local function unhelp(usr,chan,msg)
	msg = msg or "unhelp"
	msg = msg:lower()
	if commands[msg] then
		if commands[msg].helptext then
			return msg ..": ".. string.reverse(commands[msg].helptext)
		end
	end
	if msg==string.reverse(usr.nick) then
		ircSendChatQ(usr.nick,"1 point gained")
	end
	return "No help for "..msg.." found!"
end
add_cmd(unhelp,"unhelp",0,"'>dmc< plehnu/' ,noitamrofni lufplehnu yllufepoh snruteR",true)

--TIMER
local function timer(usr,chan,msg,args)
	if #timers > 10 then
		return "Error: too many timers already"
	end
	local num = tonumber(args[1])
	local perms = getPerms(usr.host, chan)
	if num and num==num and (num<108000 or perms >= 101) and args[2] then
		local t={}
		for i=2,#args do
			table.insert(t,args[i])
		end
		local pstring, seconds = table.concat(t," "), tonumber(args[1])
		addTimer(ircSendChatQ[chan][pstring],seconds,chan,usr.nick)
		return "Timer will go off in "..seconds.." second"..(seconds ~= 1 and "s" or "")
	else
		return "Bad timer"
	end
end
add_cmd(timer,"timer",0,"Time until a print is done, '/timer <time(seconds)> <text>'",true)

--BUG, report something to me in a file
local function rbug(usr,chan,msg,args)
	if not msg then error("No msg") end
	local f = io.open("bug.txt","a")
	f:write("["..os.date().."] ".. usr.host..": "..msg.."\r\n")
	f:close()
	return "Reported bug"
end
add_cmd(rbug,"bug",0,"Report something to "..config.owner.nick..", '/bug <msg>'",true)

--SEEN, display last message by a user
local function seen(usr,chan,msg,args)
	if not args[1] then return commands["seen"].helptext end
	local nick = args[1]
	if args[1]:sub(1,1) == "#" then
		if not args[2] then return commands["seen"].helptext end
		chan, nick = args[1], args[2]
	end
	if not irc.channels[chan] then
		return "not a channel: "..chan
	elseif not irc.channels[chan].users[nick] or not irc.channels[chan].users[nick].lastSaid then
		return "I have not seen "..nick
	end
	
	local sssss = function(moo) return moo == 1 and "" or "s" end
	local difference = os.difftime(os.time(), irc.channels[chan].users[nick].lastSaid.time) or 0
	local time = os.date("!*t", difference)
	local msg = time.sec.." second"..sssss(time.sec).." ago"
	if time.min ~= 0 or difference > 86400 then msg = time.min.." minute"..sssss(time.min).." and "..msg end
	if time.hour ~= 0 or difference > 86400 then msg = time.hour.." hour"..sssss(time.hour)..", "..msg end
	time.day = time.day - 1
	if time.day ~= 0 then msg = (time.day%7).." day"..sssss(time.day%7)..", "..msg end
	if time.day >= 7 then msg = math.floor(time.day/7).." week"..sssss(time.day/7)..", "..msg end
	if time.year-1970 ~= 0 then msg = (time.year-1970).." year"..sssss(time.year-1970)..", "..msg end
	msg = nick.." was last seen in "..chan.." "..msg..": <"..nick.."> "..irc.channels[chan].users[nick].lastSaid.msg
	return msg
end
add_cmd(seen,"seen",0,"Display a last seen message '/seen [<chan>] <nick>'",true)