onPlayerJoin.txt

// When players join, lookup their old names

if( (!MODULEJSON) || (!MODULEHTTP) )
	log("&cThis Script needs the JSON & HTTP Module")
	stop
endif

&uuidjson = httpget("https://api.mojang.com/users/profiles/minecraft/%JOINEDPLAYER%","",#status1)

if(#status1 = 200)
	&uuid = jsonget(%&uuidjson%,"id")
	replace(&uuid,\",)
	//log("UUID: %&uuid%")
	&namesjson = httpget("https://api.mojang.com/user/profiles/%&uuid%/names","",#status2)
	if(#status2 = 200)
		&names[] = GetJsonAsArray(%&namesjson%)
		#names = arraysize(&names)
		#names = #names-2
		&oldnames = "Old names:"
		if(#names>-1)
			for(#i,0,%#names%)
				&name = jsonget(%&names[%#i%]%, "name")
				&oldnames = "%&oldnames% %&name%"
			next
			log("%&oldnames%")
		endif
	endif
	if(#status2 != 200)
		log("&cStatus getting names: %#status2%")
	endif
endif

if(#status1 != 200)
	log("&cStatus getting uuid: %#status1%")
endif