/obj/machinery/gear_painter
	name = "Color Mate"
	desc = "A machine to give your apparel a fresh new color!"
	icon = 'icons/obj/vending_vr.dmi'
	icon_state = "colormate"
	density = TRUE
	anchored = TRUE
	var/atom/movable/inserted
	var/activecolor = "#FFFFFF"
	var/list/color_matrix_last
	var/active_mode = COLORMATE_HSV

	var/build_hue = 0
	var/build_sat = 1
	var/build_val = 1

	/// Allow holder'd mobs
	var/allow_mobs = TRUE
	/// Minimum lightness for normal mode
	var/minimum_normal_lightness = 50
	/// Minimum lightness for matrix mode, tested using 4 test colors of full red, green, blue, white.
	var/minimum_matrix_lightness = 75
	/// Minimum matrix tests that must pass for something to be considered a valid color (see above)
	var/minimum_matrix_tests = 2
	/// Temporary messages
	var/temp

	var/list/allowed_types = list(
		/obj/item/clothing,
		/obj/item/storage/backpack,
		/obj/item/storage/belt,
		/obj/item/toy,
		/obj/item/stack/material
	)

/obj/machinery/gear_painter/Initialize(mapload)
	. = ..()
	color_matrix_last = list(
		1, 0, 0,
		0, 1, 0,
		0, 0, 1,
		0, 0, 0,
	)

/obj/machinery/gear_painter/update_icon()
	if(panel_open)
		icon_state = "colormate_open"
	else if(inoperable())
		icon_state = "colormate_off"
	else if(inserted)
		icon_state = "colormate_active"
	else
		icon_state = "colormate"

/obj/machinery/gear_painter/Destroy()
	if(inserted) //please i beg you do not drop nulls
		inserted.forceMove(drop_location())
	return ..()

/obj/machinery/gear_painter/attackby(obj/item/I, mob/living/user)
	if(inserted)
		to_chat(user, span_warning("The machine is already loaded."))
		return
	if(default_deconstruction_screwdriver(user, I))
		return
	if(default_deconstruction_crowbar(user, I))
		return
	if(default_unfasten_wrench(user, I, 40))
		return

	if(is_type_in_list(I, allowed_types) && !inoperable())
		if(istype(I,/obj/item/stack/material/cyborg)) //Needs an exception for borg materials to avoid glitches.
			return
		user.visible_message(span_notice("[user] inserts \the [I] into the Color Mate receptable."))
		user.drop_from_inventory(I)
		I.forceMove(src)
		inserted = I
		SStgui.update_uis(src)

	else
		return ..()

/obj/machinery/gear_painter/attack_hand(mob/user)
	if(..())
		return
	tgui_interact(user)

/obj/machinery/gear_painter/proc/insert_mob(mob/victim, mob/user)
	if(inserted)
		return
	if(user)
		visible_message(span_warning("[user] stuffs [victim] into [src]!"))
	inserted = victim
	inserted.forceMove(src)

/obj/machinery/gear_painter/AllowDrop()
	return FALSE

// /obj/machinery/gear_painter/handle_atom_del(atom/movable/AM)
// 	if(AM == inserted)
// 		inserted = null
// 	return ..()

/obj/machinery/gear_painter/click_alt(mob/user)
	. = ..()
	drop_item(user)

/obj/machinery/gear_painter/proc/drop_item(var/mob/user)
	if(!oview(1,src))
		return
	if(!inserted)
		return
	to_chat(user, span_notice("You remove [inserted] from [src]"))
	inserted.forceMove(drop_location())
	if(isliving(user))
		user.put_in_hands(inserted)
	inserted = null
	update_icon()
	SStgui.update_uis(src)

/obj/machinery/gear_painter/tgui_interact(mob/user, datum/tgui/ui)
	ui = SStgui.try_update_ui(user, src, ui)
	if(!ui)
		ui = new(user, src, "ColorMate", src.name)
		ui.set_autoupdate(FALSE) //This might be a bit intensive, better to not update it every few ticks
		ui.open()

/obj/machinery/gear_painter/tgui_data(mob/user)
	. = list()
	.["activemode"] = active_mode
	.["matrixcolors"] = list(
		"rr" = color_matrix_last[1],
		"rg" = color_matrix_last[2],
		"rb" = color_matrix_last[3],
		"gr" = color_matrix_last[4],
		"gg" = color_matrix_last[5],
		"gb" = color_matrix_last[6],
		"br" = color_matrix_last[7],
		"bg" = color_matrix_last[8],
		"bb" = color_matrix_last[9],
		"cr" = color_matrix_last[10],
		"cg" = color_matrix_last[11],
		"cb" = color_matrix_last[12],
	)
	.["buildhue"] = build_hue
	.["buildsat"] = build_sat
	.["buildval"] = build_val
	if(temp)
		.["temp"] = temp
	if(inserted)
		.["item_name"] = inserted.name
		.["item_sprite"] = icon2base64(get_flat_icon(inserted,dir=SOUTH,no_anim=TRUE))
		.["item_preview"] = icon2base64(build_preview(user))
	else
		.["item_name"] = null
		.["item_sprite"] = null
		.["item_preview"] = null

/obj/machinery/gear_painter/tgui_act(action, params, datum/tgui/ui)
	. = ..()
	if(.)
		return
	if(inserted)
		switch(action)
			if("switch_modes")
				active_mode = text2num(params["mode"])
				return TRUE
			if("choose_color")
				var/chosen_color = tgui_color_picker(ui.user, "Choose a color: ", "ColorMate colour picking", activecolor)
				if(chosen_color)
					activecolor = chosen_color
				return TRUE
			if("paint")
				if(!do_paint(ui.user))
					return TRUE
				temp = "Painted Successfully!"
				return TRUE
			if("drop")
				temp = ""
				drop_item(ui.user)
				return TRUE
			if("clear")
				inserted.remove_atom_colour(FIXED_COLOUR_PRIORITY)
				playsound(src, 'sound/effects/spray3.ogg', 50, 1)
				temp = "Cleared Successfully!"
				return TRUE
			if("set_matrix_color")
				color_matrix_last[params["color"]] = params["value"]
				return TRUE
			if("set_matrix_string")
				if(params["value"])
					var/list/colours = splittext(params["value"], ",")
					if(colours.len > 12)
						colours.Cut(13)
					for(var/i = 1, i <= colours.len, i++)
						var/number = text2num(colours[i])
						if(isnum(number))
							color_matrix_last[i] = clamp(number, -10, 10)
				return TRUE
			if("set_hue")
				build_hue = clamp(text2num(params["buildhue"]), 0, 360)
				return TRUE
			if("set_sat")
				build_sat = clamp(text2num(params["buildsat"]), -10, 10)
				return TRUE
			if("set_val")
				build_val = clamp(text2num(params["buildval"]), -10, 10)
				return TRUE


/obj/machinery/gear_painter/proc/do_paint(mob/user)
	var/color_to_use
	switch(active_mode)
		if(COLORMATE_TINT)
			color_to_use = activecolor
		if(COLORMATE_MATRIX, COLORMATE_MATRIX_AUTO)
			color_to_use = rgb_construct_color_matrix(
				text2num(color_matrix_last[1]),
				text2num(color_matrix_last[2]),
				text2num(color_matrix_last[3]),
				text2num(color_matrix_last[4]),
				text2num(color_matrix_last[5]),
				text2num(color_matrix_last[6]),
				text2num(color_matrix_last[7]),
				text2num(color_matrix_last[8]),
				text2num(color_matrix_last[9]),
				text2num(color_matrix_last[10]),
				text2num(color_matrix_last[11]),
				text2num(color_matrix_last[12]),
			)
		if(COLORMATE_HSV)
			color_to_use = color_matrix_hsv(build_hue, build_sat, build_val)
			color_matrix_last = color_to_use
	if(!color_to_use || !check_valid_color(color_to_use, user))
		temp = "Invalid color!"
		return FALSE
	inserted.add_atom_colour(color_to_use, FIXED_COLOUR_PRIORITY)
	playsound(src, 'sound/effects/spray3.ogg', 50, 1)
	return TRUE


/// Produces the preview image of the item, used in the UI, the way the color is not stacking is a sin.
/obj/machinery/gear_painter/proc/build_preview(mob/user)
	if(inserted) //sanity
		var/list/cm
		switch(active_mode)
			if(COLORMATE_MATRIX, COLORMATE_MATRIX_AUTO)
				cm = rgb_construct_color_matrix(
					text2num(color_matrix_last[1]),
					text2num(color_matrix_last[2]),
					text2num(color_matrix_last[3]),
					text2num(color_matrix_last[4]),
					text2num(color_matrix_last[5]),
					text2num(color_matrix_last[6]),
					text2num(color_matrix_last[7]),
					text2num(color_matrix_last[8]),
					text2num(color_matrix_last[9]),
					text2num(color_matrix_last[10]),
					text2num(color_matrix_last[11]),
					text2num(color_matrix_last[12]),
				)
				if(!check_valid_color(cm, user))
					return get_flat_icon(inserted, dir=SOUTH, no_anim=TRUE)

			if(COLORMATE_TINT)
				if(!check_valid_color(activecolor, user))
					return get_flat_icon(inserted, dir=SOUTH, no_anim=TRUE)

			if(COLORMATE_HSV)
				cm = color_matrix_hsv(build_hue, build_sat, build_val)
				color_matrix_last = cm
				if(!check_valid_color(cm, user))
					return get_flat_icon(inserted, dir=SOUTH, no_anim=TRUE)

		var/cur_color = inserted.color
		inserted.color = null
		inserted.color = (active_mode == COLORMATE_TINT ? activecolor : cm)
		var/icon/preview = get_flat_icon(inserted, dir=SOUTH, no_anim=TRUE)
		inserted.color = cur_color
		temp = ""

		. = preview

/obj/machinery/gear_painter/proc/check_valid_color(list/cm, mob/user)
	if(!islist(cm))		// normal
		var/list/HSV = ReadHSV(RGBtoHSV(cm))
		if(HSV[3] < minimum_normal_lightness)
			temp = "[cm] is too dark (Minimum lightness: [minimum_normal_lightness])"
			return FALSE
		return TRUE
	else	// matrix
		// We test using full red, green, blue, and white
		// A predefined number of them must pass to be considered valid
		var/passed = 0
#define COLORTEST(thestring, thematrix) passed += (ReadHSV(RGBtoHSV(RGBMatrixTransform(thestring, thematrix)))[3] >= minimum_matrix_lightness)
		COLORTEST("FF0000", cm)
		COLORTEST("00FF00", cm)
		COLORTEST("0000FF", cm)
		COLORTEST("FFFFFF", cm)
#undef COLORTEST
		if(passed < minimum_matrix_tests)
			temp = "Matrix is too dark. (passed [passed] out of [minimum_matrix_tests] required tests. Minimum lightness: [minimum_matrix_lightness])."
			return FALSE
		return TRUE