/** This structure acts as a source of moisture loving cell lines,
as well as a location where a hidden item can somtimes be retrieved
at the cost of risking a vicious bite.**/
/obj/structure/moisture_trap
	name = "moisture trap"
	desc = "A device installed in order to control moisture in poorly ventilated areas.\nThe stagnant water inside basin seems to produce serious biofouling issues when improperly maintained.\nThis unit in particular seems to be teeming with life!\nWho thought mother Gaia could assert herself so vigoriously in this sterile and desolate place?"
	icon_state = "moisture_trap"
	anchored = TRUE
	density = FALSE
	///This var stores the hidden item that might be able to be retrieved from the trap
	var/obj/item/hidden_item
	///This var determines if there is a chance to recieve a bite when sticking your hand into the water.
	var/critter_infested = TRUE
	var/list/loot = list(
					/obj/item/food/meat/slab/human/mutant/skeleton = 35,
					/obj/item/food/meat/slab/human/mutant/zombie = 15,
					/obj/item/trash/can = 15,
					/obj/item/clothing/head/helmet/skull = 10,
					/obj/item/restraints/handcuffs = 4,
					/obj/item/restraints/handcuffs/cable/red = 1,
					/obj/item/restraints/handcuffs/cable/blue = 1,
					/obj/item/restraints/handcuffs/cable/green = 1,
					/obj/item/restraints/handcuffs/cable/pink = 1,
					/obj/item/restraints/handcuffs/alien = 2,
					/obj/item/coin/bananium = 9,
					/obj/item/knife/butcher = 5,
					/obj/item/coin/mythril = 1) //the loot table isn't that great and should probably be improved and expanded later.


/obj/structure/moisture_trap/Initialize(mapload)
	. = ..()
	if(prob(40))
		critter_infested = FALSE
	if(prob(75))
		var/picked_item = pick_weight(loot)
		hidden_item = new picked_item(src)
	loot = null
	AddElement(/datum/element/swabable, CELL_LINE_TABLE_MOIST, CELL_VIRUS_TABLE_GENERIC, rand(2,4), 20)

/obj/structure/moisture_trap/Destroy()
	if(hidden_item)
		QDEL_NULL(hidden_item)
	return ..()


///This proc checks if we are able to reach inside the trap to interact with it.
/obj/structure/moisture_trap/proc/CanReachInside(mob/user)
	if(!isliving(user))
		return FALSE
	var/mob/living/living_user = user
	if(living_user.body_position == STANDING_UP && ishuman(living_user)) //I dont think monkeys can crawl on command.
		return FALSE
	return TRUE


/obj/structure/moisture_trap/attack_hand(mob/user, list/modifiers)
	. = ..()
	if(iscyborg(user) || isalien(user))
		return
	if(!CanReachInside(user))
		to_chat(user, span_warning("You need to lie down to reach into [src]."))
		return
	to_chat(user, span_notice("You reach down into the cold water of the basin."))
	if(!do_after(user, 2 SECONDS, target = src))
		return
	if(hidden_item)
		user.put_in_hands(hidden_item)
		to_chat(user, span_notice("As you poke around inside [src] you feel the contours of something hidden below the murky waters.</span>\n<span class='nicegreen'>You retrieve [hidden_item] from [src]."))
		hidden_item = null
		return
	if(critter_infested && prob(50) && iscarbon(user))
		var/mob/living/carbon/bite_victim = user
		var/obj/item/bodypart/affecting = bite_victim.get_bodypart("[(user.active_hand_index % 2 == 0) ? "r" : "l" ]_arm")
		if(affecting?.receive_damage(30))

			to_chat(user, span_danger("You feel a sharp as an unseen creature sinks it's [pick("fangs", "beak", "proboscis")] into your arm!"))
			bite_victim.update_damage_overlays()
			playsound(src,'sound/weapons/bite.ogg', 70, TRUE)
			return
	to_chat(user, span_warning("You find nothing of value..."))

/obj/structure/moisture_trap/attackby(obj/item/I, mob/user, params)
	if(iscyborg(user) || isalien(user) || !CanReachInside(user))
		return ..()
	add_fingerprint(user)
	if(istype(I, /obj/item/reagent_containers))
		if(istype(I, /obj/item/food/monkeycube))
			var/obj/item/food/monkeycube/cube = I
			cube.Expand()
			return
		var/obj/item/reagent_containers/reagent_container = I
		if(reagent_container.is_open_container())
			reagent_container.reagents.add_reagent(/datum/reagent/water, min(reagent_container.volume - reagent_container.reagents.total_volume, reagent_container.amount_per_transfer_from_this))
			to_chat(user, span_notice("You fill [reagent_container] from [src]."))
			return
	if(hidden_item)
		to_chat(user, span_warning("There is already something inside [src]."))
		return
	if(!user.transferItemToLoc(I, src))
		to_chat(user, span_warning("\The [I] is stuck to your hand, you cannot put it in [src]!"))
		return
	hidden_item = I
	to_chat(user, span_notice("You hide [I] inside the basin."))