photocopiers (custom forms not included)

tgstation/tgstation#61323, tgstation/tgstation#63287,
tgstation/tgstation#69198,
tgstation/tgstation#69005

code/modules/asset_cache/asset_list_items.dm

@@ -99,6 +99,7 @@
 		"stamp-clown" = 'icons/stamp_icons/large_stamp-clown.png',
 		"stamp-deny" = 'icons/stamp_icons/large_stamp-deny.png',
 		"stamp-ok" = 'icons/stamp_icons/large_stamp-ok.png',
+		"stamp-void" = 'icons/stamp_icons/large_stamp-void.png',
 		"stamp-hop" = 'icons/stamp_icons/large_stamp-hop.png',
 		"stamp-cmo" = 'icons/stamp_icons/large_stamp-cmo.png',
 		"stamp-ce" = 'icons/stamp_icons/large_stamp-ce.png',
@@ -107,6 +108,10 @@
 		"stamp-cap" = 'icons/stamp_icons/large_stamp-cap.png',
 		"stamp-qm" = 'icons/stamp_icons/large_stamp-qm.png',
 		"stamp-law" = 'icons/stamp_icons/large_stamp-law.png',
+		"stamp-chap" = 'icons/stamp_icons/large_stamp-chap.png',
+		"stamp-mime" = 'icons/stamp_icons/large_stamp-mime.png',
+		"stamp-centcom" = 'icons/stamp_icons/large_stamp-centcom.png',
+		"stamp-syndicate" = 'icons/stamp_icons/large_stamp-syndicate.png',
 		"stamp-solgov" = 'icons/stamp_icons/large_stamp-solgov.png'
 	)
 

code/modules/paperwork/photocopier.dm

@@ -45,11 +45,33 @@
 	var/color_mode = PHOTO_COLOR
 	/// Indicates whether the printer is currently busy copying or not.
 	var/busy = FALSE
+	/// Variable needed to determine the selected category of forms on Photocopier.js
+	var/category
 
 /obj/machinery/photocopier/Initialize()
 	. = ..()
 	toner_cartridge = new(src)
 
+/obj/machinery/photocopier/handle_atom_del(atom/deleting_atom)
+	if(deleting_atom == paper_copy)
+		paper_copy = null
+	if(deleting_atom == photo_copy)
+		photo_copy = null
+	if(deleting_atom == document_copy)
+		document_copy = null
+	if(deleting_atom == ass)
+		ass = null
+	if(deleting_atom == toner_cartridge)
+		toner_cartridge = null
+	return ..()
+
+/obj/machinery/photocopier/Destroy()
+	QDEL_NULL(paper_copy)
+	QDEL_NULL(photo_copy)
+	QDEL_NULL(toner_cartridge)
+	ass = null //the mob isn't actually contained and just referenced, no need to delete it.
+	return ..()
+
 /obj/machinery/photocopier/ui_interact(mob/user, datum/tgui/ui)
 	ui = SStgui.try_update_ui(user, src, ui)
 	if(!ui)
@@ -61,6 +83,18 @@
 	data["has_item"] = !copier_empty()
 	data["num_copies"] = num_copies
 
+	try
+		var/list/blanks = json_decode(file2text("config/blanks.json"))
+		if (blanks != null)
+			data["blanks"] = blanks
+			data["category"] = category
+			data["forms_exist"] = TRUE
+		else
+			data["forms_exist"] = FALSE
+	catch()
+		data["forms_exist"] = FALSE
+
+
 	if(photo_copy)
 		data["is_photo"] = TRUE
 		data["color_mode"] = color_mode
@@ -165,6 +199,27 @@
 		if("set_copies")
 			num_copies = clamp(text2num(params["num_copies"]), 1, MAX_COPIES_AT_ONCE)
 			return TRUE
+		// Changes the forms displayed on Photocopier.js when you switch categories
+		if("choose_category")
+			category = params["category"]
+			return TRUE
+		// Called when you press print blank
+		if("print_blank")
+			if(busy)
+				to_chat(usr, span_warning("[src] is currently busy copying something. Please wait until it is finished."))
+				return FALSE
+			if (toner_cartridge.charges - PAPER_TONER_USE < 0)
+				to_chat(usr, span_warning("There is not enough toner in [src] to print the form, please replace the cartridge."))
+				return FALSE
+			do_copy_loop(CALLBACK(src, .proc/make_blank_print), usr)
+			var/obj/item/paper/printblank = new /obj/item/paper (loc)
+			var/printname = params["name"]
+			var/list/printinfo
+			for(var/infoline as anything in params["info"])
+				printinfo += infoline
+			printblank.name = printname
+			printblank.add_raw_text(printinfo)
+			return printblank
 
 /**
  * Determines if the photocopier has enough toner to create `num_copies` amount of copies of the currently inserted item.
@@ -278,6 +333,12 @@
 
 	return copied_doc
 
+/**
+ * The procedure is called when printing a blank to write off toner consumption.
+ */
+/obj/machinery/photocopier/proc/make_blank_print()
+	toner_cartridge.charges -= PAPER_TONER_USE
+
 /**
  * Handles the copying of an ass photo.
  *