////////////////////////////////////////////////////////////////////////////////
/// Syringes.
////////////////////////////////////////////////////////////////////////////////
#define SYRINGE_DRAW 0
#define SYRINGE_INJECT 1
#define SYRINGE_BROKEN 2

/obj/item/weapon/reagent_containers/syringe
	name = "Syringe"
	desc = "A syringe."
	icon = 'icons/obj/syringe.dmi'
	item_state = "syringe_0"
	icon_state = "0"
	amount_per_transfer_from_this = 5
	possible_transfer_amounts = null //list(5,10,15)
	volume = 15
	var/mode = SYRINGE_DRAW

	on_reagent_change()
		update_icon()

	pickup(mob/user)
		..()
		update_icon()

	dropped(mob/user)
		..()
		update_icon()

	attack_self(mob/user as mob)

		switch(mode)
			if(SYRINGE_DRAW)
				mode = SYRINGE_INJECT
			if(SYRINGE_INJECT)
				mode = SYRINGE_DRAW
			if(SYRINGE_BROKEN)
				return
		update_icon()

	attack_hand()
		..()
		update_icon()

	attack_paw()
		return attack_hand()

	attackby(obj/item/I as obj, mob/user as mob)

		return

	afterattack(obj/target, mob/user , flag)
		if(!target.reagents) return

		if(mode == SYRINGE_BROKEN)
			user << "\red This syringe is broken!"
			return

		if (user.a_intent == "hurt" && ismob(target))
			if((CLUMSY in user.mutations) && prob(50))
				target = user
			syringestab(target, user)
			return


		switch(mode)
			if(SYRINGE_DRAW)

				if(reagents.total_volume >= reagents.maximum_volume)
					user << "\red The syringe is full."
					return

				if(ismob(target))//Blood!
					if(istype(target, /mob/living/carbon/slime))
						user << "\red You are unable to locate any blood."
						return
					if(src.reagents.has_reagent("blood"))
						user << "\red There is already a blood sample in this syringe"
						return
					if(istype(target, /mob/living/carbon))//maybe just add a blood reagent to all mobs. Then you can suck them dry...With hundreds of syringes. Jolly good idea.
						var/amount = src.reagents.maximum_volume - src.reagents.total_volume
						var/mob/living/carbon/T = target
						if(!T.dna)
							usr << "You are unable to locate any blood. (To be specific, your target seems to be missing their DNA datum)"
							return
						if(NOCLONE in T.mutations) //target done been et, no more blood in him
							user << "\red You are unable to locate any blood."
							return

						var/datum/reagent/B = T.take_blood(src,amount)

						if (B)
							src.reagents.reagent_list += B
							src.reagents.update_total()
							src.on_reagent_change()
							src.reagents.handle_reactions()
						user << "\blue You take a blood sample from [target]"
						for(var/mob/O in viewers(4, user))
							O.show_message("\red [user] takes a blood sample from [target].", 1)

				else //if not mob
					if(!target.reagents.total_volume)
						user << "\red [target] is empty."
						return

					if(!target.is_open_container() && !istype(target,/obj/structure/reagent_dispensers) && !istype(target,/obj/item/slime_extract))
						user << "\red You cannot directly remove reagents from this object."
						return

					var/trans = target.reagents.trans_to(src, amount_per_transfer_from_this) // transfer from, transfer to - who cares?

					user << "\blue You fill the syringe with [trans] units of the solution."
				if (reagents.total_volume >= reagents.maximum_volume)
					mode=!mode
					update_icon()

			if(SYRINGE_INJECT)
				if(!reagents.total_volume)
					user << "\red The Syringe is empty."
					return
				if(istype(target, /obj/item/weapon/implantcase/chem))
					return

				if(!target.is_open_container() && !ismob(target) && !istype(target, /obj/item/weapon/reagent_containers/food) && !istype(target, /obj/item/slime_extract) && !istype(target, /obj/item/clothing/mask/cigarette) && !istype(target, /obj/item/weapon/storage/fancy/cigarettes))
					user << "\red You cannot directly fill this object."
					return
				if(target.reagents.total_volume >= target.reagents.maximum_volume)
					user << "\red [target] is full."
					return

				if(ismob(target) && target != user)
					for(var/mob/O in viewers(world.view, user))
						O.show_message(text("\red <B>[] is trying to inject []!</B>", user, target), 1)
					if(!do_mob(user, target)) return
					for(var/mob/O in viewers(world.view, user))
						O.show_message(text("\red [] injects [] with the syringe!", user, target), 1)
					src.reagents.reaction(target, INGEST)
				if(ismob(target) && target == user)
					src.reagents.reaction(target, INGEST)
				spawn(5)
					var/datum/reagent/blood/B
					for(var/datum/reagent/blood/d in src.reagents.reagent_list)
						B = d
						break
					var/trans
					if(B && ishuman(target))
						var/mob/living/carbon/human/H = target
						H.inject_blood(src,5)
					else
						trans = src.reagents.trans_to(target, amount_per_transfer_from_this)
					user << "\blue You inject [trans] units of the solution. The syringe now contains [src.reagents.total_volume] units."
					if (reagents.total_volume <= 0 && mode==SYRINGE_INJECT)
						mode = SYRINGE_DRAW
						update_icon()

		return

	update_icon()
		if(mode == SYRINGE_BROKEN)
			icon_state = "broken"
			overlays.Cut()
			return
		var/rounded_vol = round(reagents.total_volume,5)
		overlays.Cut()
		if(ismob(loc))
			var/injoverlay
			switch(mode)
				if (SYRINGE_DRAW)
					injoverlay = "draw"
				if (SYRINGE_INJECT)
					injoverlay = "inject"
			overlays += injoverlay
		icon_state = "[rounded_vol]"
		item_state = "syringe_[rounded_vol]"

		if(reagents.total_volume)
			var/image/filling = image('icons/obj/reagentfillings.dmi', src, "syringe10")

			filling.icon_state = "syringe[rounded_vol]"

			filling.icon += mix_color_from_reagents(reagents.reagent_list)
			overlays += filling


	/obj/item/weapon/reagent_containers/syringe/proc/syringestab(mob/living/carbon/target as mob, mob/living/carbon/user as mob)

		user.attack_log += "\[[time_stamp()]\]<font color='red'> Attacked [target.name] ([target.ckey]) with [src.name] (INTENT: [uppertext(user.a_intent)])</font>"
		target.attack_log += "\[[time_stamp()]\]<font color='orange'> Attacked by [user.name] ([user.ckey]) with [src.name] (INTENT: [uppertext(user.a_intent)])</font>"

		log_attack("<font color='red'> [user.name] ([user.ckey]) attacked [target.name] ([target.ckey]) with [src.name] (INTENT: [uppertext(user.a_intent)])</font>")

		if(istype(target, /mob/living/carbon/human))

			var/target_zone = check_zone(user.zone_sel.selecting, target)
			var/datum/organ/external/affecting = target:get_organ(target_zone)

			if (!affecting)
				return
			if(affecting.status & ORGAN_DESTROYED)
				user << "What [affecting.display_name]?"
				return
			var/hit_area = affecting.display_name

			var/mob/living/carbon/human/H = target
			if((user != target) && H.check_shields(7, "the [src.name]"))
				return

			if (target != user && target.getarmor(target_zone, "melee") > 5 && prob(50))
				for(var/mob/O in viewers(world.view, user))
					O.show_message(text("\red <B>[user] tries to stab [target] in \the [hit_area] with [src.name], but the attack is deflected by armor!</B>"), 1)
				user.u_equip(src)
				del(src)
				return

			for(var/mob/O in viewers(world.view, user))
				O.show_message(text("\red <B>[user] stabs [target] in \the [hit_area] with [src.name]!</B>"), 1)

			if(affecting.take_damage(3))
				target:UpdateDamageIcon()

		else
			for(var/mob/O in viewers(world.view, user))
				O.show_message(text("\red <B>[user] stabs [target] with [src.name]!</B>"), 1)
			target.take_organ_damage(3)// 7 is the same as crowbar punch

		src.reagents.reaction(target, INGEST)
		var/syringestab_amount_transferred = rand(0, (reagents.total_volume - 5)) //nerfed by popular demand
		src.reagents.trans_to(target, syringestab_amount_transferred)
		src.desc += " It is broken."
		src.mode = SYRINGE_BROKEN
		src.add_blood(target)
		src.add_fingerprint(usr)
		src.update_icon()


/obj/item/weapon/reagent_containers/ld50_syringe
	name = "Lethal Injection Syringe"
	desc = "A syringe used for lethal injections."
	icon = 'icons/obj/syringe.dmi'
	item_state = "syringe_0"
	icon_state = "0"
	amount_per_transfer_from_this = 50
	possible_transfer_amounts = null //list(5,10,15)
	volume = 50
	var/mode = SYRINGE_DRAW

	on_reagent_change()
		update_icon()

	pickup(mob/user)
		..()
		update_icon()

	dropped(mob/user)
		..()
		update_icon()

	attack_self(mob/user as mob)
		mode = !mode
		update_icon()

	attack_hand()
		..()
		update_icon()

	attack_paw()
		return attack_hand()

	attackby(obj/item/I as obj, mob/user as mob)

		return

	afterattack(obj/target, mob/user , flag)
		if(!target.reagents) return

		switch(mode)
			if(SYRINGE_DRAW)

				if(reagents.total_volume >= reagents.maximum_volume)
					user << "\red The syringe is full."
					return

				if(ismob(target))
					if(istype(target, /mob/living/carbon))//I Do not want it to suck 50 units out of people
						usr << "This needle isn't designed for drawing blood."
						return
				else //if not mob
					if(!target.reagents.total_volume)
						user << "\red [target] is empty."
						return

					if(!target.is_open_container() && !istype(target,/obj/structure/reagent_dispensers))
						user << "\red You cannot directly remove reagents from this object."
						return

					var/trans = target.reagents.trans_to(src, amount_per_transfer_from_this) // transfer from, transfer to - who cares?

					user << "\blue You fill the syringe with [trans] units of the solution."
				if (reagents.total_volume >= reagents.maximum_volume)
					mode=!mode
					update_icon()

			if(SYRINGE_INJECT)
				if(!reagents.total_volume)
					user << "\red The Syringe is empty."
					return
				if(istype(target, /obj/item/weapon/implantcase/chem))
					return
				if(!target.is_open_container() && !ismob(target) && !istype(target, /obj/item/weapon/reagent_containers/food))
					user << "\red You cannot directly fill this object."
					return
				if(target.reagents.total_volume >= target.reagents.maximum_volume)
					user << "\red [target] is full."
					return

				if(ismob(target) && target != user)
					for(var/mob/O in viewers(world.view, user))
						O.show_message(text("\red <B>[] is trying to inject [] with a giant syringe!</B>", user, target), 1)
					if(!do_mob(user, target, 300)) return
					for(var/mob/O in viewers(world.view, user))
						O.show_message(text("\red [] injects [] with a giant syringe!", user, target), 1)
					src.reagents.reaction(target, INGEST)
				if(ismob(target) && target == user)
					src.reagents.reaction(target, INGEST)
				spawn(5)
					var/trans = src.reagents.trans_to(target, amount_per_transfer_from_this)
					user << "\blue You inject [trans] units of the solution. The syringe now contains [src.reagents.total_volume] units."
					if (reagents.total_volume >= reagents.maximum_volume && mode==SYRINGE_INJECT)
						mode = SYRINGE_DRAW
						update_icon()
		return


	update_icon()
		var/rounded_vol = round(reagents.total_volume,50)
		if(ismob(loc))
			var/mode_t
			switch(mode)
				if (SYRINGE_DRAW)
					mode_t = "d"
				if (SYRINGE_INJECT)
					mode_t = "i"
			icon_state = "[mode_t][rounded_vol]"
		else
			icon_state = "[rounded_vol]"
		item_state = "syringe_[rounded_vol]"


////////////////////////////////////////////////////////////////////////////////
/// Syringes. END
////////////////////////////////////////////////////////////////////////////////



/obj/item/weapon/reagent_containers/syringe/inaprovaline
	name = "Syringe (inaprovaline)"
	desc = "Contains inaprovaline - used to stabilize patients."
	New()
		..()
		reagents.add_reagent("inaprovaline", 15)
		mode = SYRINGE_INJECT
		update_icon()

/obj/item/weapon/reagent_containers/syringe/antitoxin
	name = "Syringe (anti-toxin)"
	desc = "Contains anti-toxins."
	New()
		..()
		reagents.add_reagent("anti_toxin", 15)
		mode = SYRINGE_INJECT
		update_icon()

/obj/item/weapon/reagent_containers/syringe/antiviral
	name = "Syringe (spaceacillin)"
	desc = "Contains antiviral agents."
	New()
		..()
		reagents.add_reagent("spaceacillin", 15)
		mode = SYRINGE_INJECT
		update_icon()

/obj/item/weapon/reagent_containers/ld50_syringe/choral
	New()
		..()
		reagents.add_reagent("chloralhydrate", 50)
		mode = SYRINGE_INJECT
		update_icon()


//Robot syringes
//Not special in any way, code wise. They don't have added variables or procs.
/obj/item/weapon/reagent_containers/syringe/robot/antitoxin
	name = "Syringe (anti-toxin)"
	desc = "Contains anti-toxins."
	New()
		..()
		reagents.add_reagent("anti_toxin", 15)
		mode = SYRINGE_INJECT
		update_icon()

/obj/item/weapon/reagent_containers/syringe/robot/inoprovaline
	name = "Syringe (inoprovaline)"
	desc = "Contains inaprovaline - used to stabilize patients."
	New()
		..()
		reagents.add_reagent("inaprovaline", 15)
		mode = SYRINGE_INJECT
		update_icon()

/obj/item/weapon/reagent_containers/syringe/robot/mixed
	name = "Syringe (mixed)"
	desc = "Contains inaprovaline & anti-toxins."
	New()
		..()
		reagents.add_reagent("inaprovaline", 7)
		reagents.add_reagent("anti_toxin", 8)
		mode = SYRINGE_INJECT
		update_icon()