GLOBAL_LIST_INIT(print_types, init_print_types())

/proc/init_print_types()
	var/list/print_types = list()
	for(var/obj/item/canvas/canvas_type as anything in typesof(/obj/item/canvas))
		var/width = canvas_type::width
		var/height = canvas_type::height
		LAZYADDASSOC(print_types, "[width]x[height]", list(
			"displayText" = "Canvas ([width]x[height])",
			"typepath" = canvas_type,
			"width" = width,
			"height" = height,
			"check_callback" = CALLBACK(GLOBAL_PROC, GLOBAL_PROC_REF(check_can_print_canvas)),
			"prepare_callback" = CALLBACK(GLOBAL_PROC, GLOBAL_PROC_REF(prepare_canvas_from_file)),
		))
	for(var/size in 1 to CAMERA_PICTURE_SIZE_HARD_LIMIT)
		var/meters = APERTURE_TO_METERS(size)
		var/width = ICON_SIZE_X * meters
		var/height = ICON_SIZE_Y * meters
		LAZYADDASSOC(print_types, "[width]x[height]",  list(
			"displayText" = "Photo Paper ([meters]m focal length)",
			"typepath" = /obj/item/photo,
			"width" = width,
			"height" = height,
			"check_callback" = CALLBACK(GLOBAL_PROC, GLOBAL_PROC_REF(check_can_print_photo)),
			"prepare_callback" = CALLBACK(GLOBAL_PROC, GLOBAL_PROC_REF(prepare_photo_from_file)),
		))
	return print_types

/proc/check_can_print_canvas(_typepath, _image_file, obj/item/modular_computer/computer, mob/user)
	if(!(computer.hardware_flag & PROGRAM_CONSOLE))
		to_chat(user, span_notice("Printing error: Canvas printing is only supported on stationary consoles."))
		return FALSE
	if(computer.stored_paper < CANVAS_PAPER_COST)
		to_chat(user, span_notice("Printing error: Your printer needs at least [CANVAS_PAPER_COST] paper to print a canvas."))
		return FALSE
	return TRUE

/proc/prepare_canvas_from_file(obj/item/canvas/canvas, datum/computer_file/image/image_file, obj/item/modular_computer/computer, width, height, x, y)
	computer.stored_paper -= CANVAS_PAPER_COST
	if(istype(image_file.source_photo_or_painting, /datum/painting))
		var/datum/painting/source_painting = image_file.source_photo_or_painting
		var/icon/painting_icon = source_painting.get_icon()
		if(width == painting_icon.Width() && height == painting_icon.Height() && !x && !y)
			source_painting.fill_canvas(canvas)
			return
	var/datum/icon_transformer/transformer = new()
	var/temp_file = "tmp/[copytext(REF(image_file.stored_icon), 2, -1)].dmi"
	fcopy(image_file.stored_icon, temp_file)
	transformer.scale(width, height)
	transformer.blend_color("#ffffff", ICON_OVERLAY)
	transformer.blend_icon(uni_icon(temp_file, ""), ICON_OVERLAY, x+1, y+1)
	var/datum/universal_icon/blank = uni_icon('icons/blanks/32x32.dmi', "nothing", transform = transformer)
	canvas.fill_grid_from_icon(blank.to_icon())
	fdel(temp_file)
	canvas.painting_metadata.medium = "Digital Art"
	canvas.used = TRUE
	canvas.update_icon()

/proc/check_can_print_photo(_typepath, _image_file, obj/item/modular_computer/computer, mob/user)
	if(computer.stored_paper < PHOTO_PAPER_COST)
		to_chat(user, span_notice("Printing error: Your printer needs at least [PHOTO_PAPER_COST] paper to print a photo."))
		return FALSE
	return TRUE

/proc/prepare_photo_from_file(obj/item/photo/photo, datum/computer_file/image/image_file, obj/item/modular_computer/computer, width, height, x, y)
	computer.stored_paper -= PHOTO_PAPER_COST
	var/icon/photo_image = image_file.stored_icon
	var/image_width = photo_image.Width()
	var/image_height = photo_image.Height()
	if(istype(image_file.source_photo_or_painting, /datum/picture) && width == image_width && height == image_height && !x && !y)
		var/datum/picture/source_photo = image_file.source_photo_or_painting
		photo.set_picture(source_photo, TRUE, TRUE)
		return
	var/datum/icon_transformer/transformer = new()
	var/temp_file = "tmp/[copytext(REF(photo_image), 2, -1)].dmi"
	fcopy(photo_image, temp_file)
	transformer.scale(width, height)
	transformer.blend_color("#ffffff", ICON_OVERLAY)
	transformer.blend_icon(uni_icon(temp_file, ""), ICON_OVERLAY, x+1, y+1)
	var/datum/universal_icon/blank = uni_icon('icons/blanks/32x32.dmi', "nothing", transform = transformer)
	var/datum/picture/new_photo = new(image_file.filename, desc = "A printout of a digital image.", image = blank.to_icon(), size_x = width, size_y = height, autogenerate_icon = TRUE, author_ckey_ = image_file.author_ckey)
	fdel(temp_file)
	image_file.source_photo_or_painting = new_photo
	photo.set_picture(new_photo, TRUE, TRUE)

/datum/computer_file/program/filemanager
	filename = "filemanager"
	filedesc = "File Manager"
	extended_desc = "This program allows management of files."
	program_open_overlay = "generic"
	size = 8
	program_flags = NONE
	undeletable = TRUE
	tgui_id = "NtosFileManager"
	program_icon = "folder"

	var/open_file
	var/error

/datum/computer_file/program/filemanager/ui_act(action, params, datum/tgui/ui, datum/ui_state/state)
	. = ..()
	switch(action)
		if("PRG_deletefile")
			var/datum/computer_file/file = computer.find_file_by_name(params["name"])
			if(!file || file.undeletable)
				return
			computer.remove_file(file)
			return TRUE
		if("PRG_usbdeletefile")
			if(!computer.inserted_disk)
				return
			var/datum/computer_file/file = computer.find_file_by_name(params["name"], computer.inserted_disk)
			if(!file || file.undeletable)
				return
			computer.inserted_disk.remove_file(file)
			return TRUE
		if("PRG_renamefile")
			var/datum/computer_file/file = computer.find_file_by_name(params["name"])
			if(!file)
				return
			var/newname = trim(params["new_name"], MAX_MESSAGE_LEN)
			if(!length(newname) || !filter_filename_pda(newname))
				playsound(computer, 'sound/machines/terminal/terminal_error.ogg', 25, FALSE)
				return
			file.filename = newname
			return TRUE
		if("PRG_usbrenamefile")
			if(!computer.inserted_disk)
				return
			var/datum/computer_file/file = computer.find_file_by_name(params["name"], computer.inserted_disk)
			if(!file)
				return
			var/newname = trim(params["new_name"], MAX_MESSAGE_LEN)
			if(!length(newname) || !filter_filename_pda(newname))
				playsound(computer, 'sound/machines/terminal/terminal_error.ogg', 25, FALSE)
				return
			file.filename = newname
			return TRUE
		if("PRG_copytousb")
			if(!computer.inserted_disk)
				return
			var/datum/computer_file/F = computer.find_file_by_name(params["name"])
			if(!F)
				return
			if(computer.find_file_by_name(params["name"], computer.inserted_disk))
				return
			var/datum/computer_file/C = F.clone(FALSE)
			computer.inserted_disk.add_file(C)
			return TRUE
		if("PRG_copyfromusb")
			if(!computer.inserted_disk)
				return
			var/datum/computer_file/F = computer.find_file_by_name(params["name"], computer.inserted_disk)
			if(!F || !istype(F))
				return
			if(!computer.can_store_file(F))
				return FALSE
			var/datum/computer_file/C = F.clone(FALSE)
			computer.store_file(C, usr)
			return TRUE
		if("PRG_togglesilence")
			var/datum/computer_file/program/binary = computer.find_file_by_name(params["name"])
			if(!binary || !istype(binary))
				return
			binary.alert_silenced = !binary.alert_silenced
		if("PRG_print")
			var/datum/computer_file/image/picture = computer.find_file_by_name(params["name"])
			if(!istype(picture))
				return
			try_print(picture, params["width"], params["height"], params["offsetX"], params["offsetY"], params["typepath"], usr)
		if("PRG_usbprint")
			if(!computer.inserted_disk)
				return
			var/datum/computer_file/image/picture = computer.find_file_by_name(params["name"], computer.inserted_disk)
			if(!istype(picture))
				return
			try_print(picture, params["width"], params["height"], params["offsetX"], params["offsetY"], params["typepath"], usr)

/datum/computer_file/program/filemanager/proc/try_print(datum/computer_file/image/picture, width, height, offset_x, offset_y, typepath, mob/user)
	var/list/print_type = GLOB.print_types["[width]x[height]"]
	if(!length(print_type))
		return
	var/image_width = picture.stored_icon.Width()
	var/image_height = picture.stored_icon.Height()
	var/min_offset_x = min(width - image_width, 0)
	var/max_offset_x = max(width - image_width, 0)
	var/min_offset_y = min(height - image_height, 0)
	var/max_offset_y = max(height - image_height, 0)
	if(!ISINRANGE(offset_x, min_offset_x, max_offset_x) || !ISINRANGE(offset_y, min_offset_y, max_offset_y))
		return
	typepath = text2path(typepath)
	var/datum/callback/check_callback = print_type["check_callback"]
	if(!check_callback.Invoke(typepath, picture, computer, user))
		return
	var/obj/item/printed_item = new typepath(computer.physical.drop_location())
	var/datum/callback/prepare_callback = print_type["prepare_callback"]
	prepare_callback.Invoke(printed_item, picture, computer, width, height, offset_x, offset_y)
	user?.put_in_hands(printed_item)
	playsound(computer.physical, 'sound/machines/printer.ogg', 100, TRUE)

/datum/computer_file/program/filemanager/ui_static_data(mob/user)
	var/list/print_types = list()
	for(var/dimensions, types_for_dimensions in GLOB.print_types)
		var/list/typepath =  types_for_dimensions["typepath"]
		if(ispath(typepath, /obj/item/canvas) && !(computer.hardware_flag & PROGRAM_CONSOLE))
			continue
		print_types += list(list(
			displayText = types_for_dimensions["displayText"],
			typepath = "[typepath]",
			width = types_for_dimensions["width"],
			height = types_for_dimensions["height"]
		))
	return list("printTypes" = print_types)

/datum/computer_file/program/filemanager/ui_data(mob/user)
	var/list/data = list()
	if(error)
		data["error"] = error
	if(!computer)
		data["error"] = "I/O ERROR: Unable to access hard drive."
	else
		var/list/files = list()
		for(var/datum/computer_file/F as anything in computer.stored_files)
			var/noisy = FALSE
			var/silenced = FALSE
			var/printable = FALSE
			var/image_width = 0
			var/image_height = 0
			var/image_ref
			var/datum/computer_file/program/binary = F
			if(istype(binary))
				noisy = binary.alert_able
				silenced = binary.alert_silenced
			var/datum/computer_file/image/picture_file = F
			if(istype(picture_file))
				printable = TRUE
				image_width = picture_file.stored_icon.Width()
				image_height = picture_file.stored_icon.Height()
				image_ref = picture_file.get_image_ref()
			files += list(list(
				"name" = F.filename,
				"type" = F.filetype,
				"size" = F.size,
				"undeletable" = F.undeletable,
				"alert_able" = noisy,
				"alert_silenced" = silenced,
				"printable" = printable,
				"image_ref" = image_ref,
				"image_width" = image_width,
				"image_height" = image_height,
			))
		data["files"] = files
		if(computer.inserted_disk)
			data["usbconnected"] = TRUE
			var/list/usbfiles = list()
			for(var/datum/computer_file/F as anything in computer.inserted_disk.stored_files)
				var/printable = FALSE
				var/image_width = 0
				var/image_height = 0
				var/image_ref
				var/datum/computer_file/image/picture_file = F
				if(istype(picture_file))
					printable = TRUE
					image_width = picture_file.stored_icon.Width()
					image_height = picture_file.stored_icon.Height()
					image_ref = picture_file.get_image_ref()
				usbfiles += list(list(
					"name" = F.filename,
					"type" = F.filetype,
					"size" = F.size,
					"undeletable" = F.undeletable,
					"printable" = printable,
					"image_ref" = image_ref,
					"image_width" = image_width,
					"image_height" = image_height,
				))
			data["usbfiles"] = usbfiles

	return data