/obj/item/barcodescanner
	name = "barcode scanner"
	icon = 'icons/obj/library.dmi'
	icon_state ="scanner"
	desc = "A fabulous tool if you need to scan a barcode."
	throw_speed = 3
	throw_range = 5
	w_class = WEIGHT_CLASS_TINY
	/// A weakref to our associated computer - Modes 1 to 3 use this
	var/datum/weakref/computer_ref
	/// Currently scanned book
	var/datum/book_info/book_data
	/// 0 - Scan only, 1 - Scan and Set Buffer, 2 - Scan and Attempt to Check In, 3 - Scan and Attempt to Add to Inventory
	var/mode = 0

/obj/item/barcodescanner/attack_self(mob/user)
	mode += 1
	if(mode > 3)
		mode = 0
	to_chat(user, "[src] Status Display:")
	var/modedesc
	switch(mode)
		if(0)
			modedesc = "Scan book to local buffer."
		if(1)
			modedesc = "Scan book to local buffer and set associated computer buffer to match."
		if(2)
			modedesc = "Scan book to local buffer, attempt to check in scanned book."
		if(3)
			modedesc = "Scan book to local buffer, attempt to add book to general inventory."
		else
			modedesc = "ERROR"
	to_chat(user, " - Mode [mode] : [modedesc]")
	if(computer_ref?.resolve())
		to_chat(user, "<font color=green>Computer has been associated with this unit.</font>")
	else
		to_chat(user, "<font color=red>No associated computer found. Only local scans will function properly.</font>")
	to_chat(user, "\n")