/obj/item/organ/heart
	name = "heart"
	desc = "I feel bad for the heartless bastard who lost this."
	icon_state = "heart-on"
	zone = BODY_ZONE_CHEST
	slot = ORGAN_SLOT_HEART

	healing_factor = STANDARD_ORGAN_HEALING
	decay_factor = 4 * STANDARD_ORGAN_DECAY		//designed to fail about 5 minutes after death

	low_threshold_passed = "<span class='info'>Prickles of pain appear then die out from within your chest...</span>"
	high_threshold_passed = "<span class='warning'>Something inside your chest hurts, and the pain isn't subsiding. You notice yourself breathing far faster than before.</span>"
	now_fixed = "<span class='info'>Your heart begins to beat again.</span>"
	high_threshold_cleared = "<span class='info'>The pain in your chest has died down, and your breathing becomes more relaxed.</span>"

	// Heart attack code is in code/modules/mob/living/carbon/human/life.dm
	var/beating = 1
	var/icon_base = "heart"
	attack_verb = list("beat", "thumped")
	var/beat = BEAT_NONE//is this mob having a heatbeat sound played? if so, which?

	var/failed = FALSE		//to prevent constantly running failing code
	var/operated = FALSE	//whether the heart's been operated on to fix some of its damages

/obj/item/organ/heart/update_icon()
	if(beating)
		icon_state = "[icon_base]-on"
	else
		icon_state = "[icon_base]-off"

/obj/item/organ/heart/Remove(mob/living/carbon/M, special = 0)
	..()
	if(!special)
		addtimer(CALLBACK(src,PROC_REF(stop_if_unowned)), 120)

/obj/item/organ/heart/proc/stop_if_unowned()
	if(!owner)
		Stop()

/obj/item/organ/heart/attack_self(mob/user)
	..()
	if(!beating)
		user.visible_message("<span class='notice'>[user] squeezes [src] to \
			make it beat again!</span>","<span class='notice'>You squeeze [src] to make it beat again!</span>")
		Restart()
		addtimer(CALLBACK(src,PROC_REF(stop_if_unowned)), 80)

/obj/item/organ/heart/proc/Stop()
	beating = 0
	update_icon()
	return 1

/obj/item/organ/heart/proc/Restart()
	beating = 1
	update_icon()
	return 1

/obj/item/organ/heart/proc/HeartStrengthMessage()
	if(beating)
		return "a healthy"
	return "<span class='danger'>an unstable</span>"

/obj/item/organ/heart/prepare_eat()
	var/obj/S = ..()
	S.icon_state = "[icon_base]-off"
	return S

/obj/item/organ/heart/on_life()
	..()
	if(owner.client && beating)
		failed = FALSE
		var/sound/slowbeat = sound('sound/health/slowbeat.ogg', repeat = TRUE)
		var/sound/fastbeat = sound('sound/health/fastbeat.ogg', repeat = TRUE)
		var/mob/living/carbon/H = owner

		if(H.health <= H.crit_threshold && beat != BEAT_SLOW)
			beat = BEAT_SLOW
			H.playsound_local(get_turf(H), slowbeat,40,0, channel = CHANNEL_HEARTBEAT)
			to_chat(owner, "<span class = 'notice'>You feel your heart slow down...</span>")
		if(beat == BEAT_SLOW && H.health > H.crit_threshold)
			H.stop_sound_channel(CHANNEL_HEARTBEAT)
			beat = BEAT_NONE

		if(H.jitteriness)
			if(H.health > HEALTH_THRESHOLD_FULLCRIT && (!beat || beat == BEAT_SLOW))
				H.playsound_local(get_turf(H),fastbeat,40,0, channel = CHANNEL_HEARTBEAT)
				beat = BEAT_FAST
		else if(beat == BEAT_FAST)
			H.stop_sound_channel(CHANNEL_HEARTBEAT)
			beat = BEAT_NONE

	if(organ_flags & ORGAN_FAILING)	//heart broke, stopped beating, death imminent
		if(owner.stat == CONSCIOUS)
			owner.visible_message("<span class='userdanger'>[owner] clutches at [owner.p_their()] chest as if [owner.p_their()] heart is stopping!</span>")
		owner.set_heartattack(TRUE)
		failed = TRUE

obj/item/organ/heart/slime
	name = "slime heart"
	desc = "It seems we've gotten to the slimy core of the matter."
	icon_state = "heart-s-on"
	icon_base = "heart-s"

/obj/item/organ/heart/cursed
	name = "cursed heart"
	desc = "A heart that, when inserted, will force you to pump it manually."
	icon_state = "cursedheart-off"
	icon_base = "cursedheart"
	decay_factor = 0
	actions_types = list(/datum/action/item_action/organ_action/cursed_heart)
	var/last_pump = 0
	var/add_colour = TRUE //So we're not constantly recreating colour datums
	var/pump_delay = 30 //you can pump 1 second early, for lag, but no more (otherwise you could spam heal)
	var/blood_loss = 100 //600 blood is human default, so 5 failures (below 122 blood is where humans die because reasons?)

	//How much to heal per pump, negative numbers would HURT the player
	var/heal_brute = 0
	var/heal_burn = 0
	var/heal_oxy = 0


/obj/item/organ/heart/cursed/attack(mob/living/carbon/human/H, mob/living/carbon/human/user, obj/target)
	if(H == user && istype(H))
		playsound(user,'sound/effects/singlebeat.ogg',40,1)
		user.temporarilyRemoveItemFromInventory(src, TRUE)
		Insert(user)
	else
		return ..()

/obj/item/organ/heart/cursed/on_life()
	if(world.time > (last_pump + pump_delay))
		if(ishuman(owner) && owner.client) //While this entire item exists to make people suffer, they can't control disconnects.
			var/mob/living/carbon/human/H = owner
			if(H.dna && !(NOBLOOD in H.dna.species.species_traits))
				H.blood_volume = max(H.blood_volume - blood_loss, 0)
				to_chat(H, "<span class = 'userdanger'>You have to keep pumping your blood!</span>")
				if(add_colour)
					H.add_client_colour(/datum/client_colour/cursed_heart_blood) //bloody screen so real
					add_colour = FALSE
		else
			last_pump = world.time //lets be extra fair *sigh*

/obj/item/organ/heart/cursed/Insert(mob/living/carbon/M, special = 0)
	..()
	if(owner)
		to_chat(owner, "<span class ='userdanger'>Your heart has been replaced with a cursed one, you have to pump this one manually otherwise you'll die!</span>")

/obj/item/organ/heart/cursed/Remove(mob/living/carbon/M, special = 0)
	..()
	M.remove_client_colour(/datum/client_colour/cursed_heart_blood)

/datum/action/item_action/organ_action/cursed_heart
	name = "Pump your blood"

//You are now brea- pumping blood manually
/datum/action/item_action/organ_action/cursed_heart/Trigger()
	. = ..()
	if(. && istype(target, /obj/item/organ/heart/cursed))
		var/obj/item/organ/heart/cursed/cursed_heart = target

		if(world.time < (cursed_heart.last_pump + (cursed_heart.pump_delay-10))) //no spam
			to_chat(owner, "<span class='userdanger'>Too soon!</span>")
			return

		cursed_heart.last_pump = world.time
		playsound(owner,'sound/effects/singlebeat.ogg',40,1)
		to_chat(owner, "<span class = 'notice'>Your heart beats.</span>")

		var/mob/living/carbon/human/H = owner
		if(istype(H))
			if(H.dna && !(NOBLOOD in H.dna.species.species_traits))
				H.blood_volume = min(H.blood_volume + cursed_heart.blood_loss*0.5, BLOOD_VOLUME_MAXIMUM)
				H.remove_client_colour(/datum/client_colour/cursed_heart_blood)
				cursed_heart.add_colour = TRUE
				H.adjustBruteLoss(-cursed_heart.heal_brute)
				H.adjustFireLoss(-cursed_heart.heal_burn)
				H.adjustOxyLoss(-cursed_heart.heal_oxy)


/datum/client_colour/cursed_heart_blood
	priority = 100 //it's an indicator you're dieing, so it's very high priority
	colour = "red"

/obj/item/organ/heart/cybernetic
	name = "cybernetic heart"
	desc = "An electronic device designed to mimic the functions of an organic human heart. Offers no benefit over an organic heart other than being easy to make."
	icon_state = "heart-c"
	organ_flags = ORGAN_SYNTHETIC

/obj/item/organ/heart/cybernetic/emp_act(severity)
	. = ..()
	if(. & EMP_PROTECT_SELF)
		return
	Stop()
	addtimer(CALLBACK(src,PROC_REF(Restart)), 20/severity SECONDS)
	damage += 100/severity

/obj/item/organ/heart/cybernetic/upgraded
	name = "upgraded cybernetic heart"
	desc = "An electronic device designed to mimic the functions of an organic human heart. Also holds an emergency dose of epinephrine, used automatically after facing severe trauma. This upgraded model can regenerate its dose after use."
	icon_state = "heart-c-u"
	maxHealth = 2 * STANDARD_ORGAN_THRESHOLD

	//I put it on upgraded for now.
	var/dose_available = TRUE
	var/rid = /datum/reagent/medicine/epinephrine
	var/ramount = 10

obj/item/organ/heart/cybernetic/upgraded/on_life()
	. = ..()
	if(dose_available && owner.health <= owner.crit_threshold && !owner.reagents.has_reagent(rid))
		owner.reagents.add_reagent(rid, ramount)
		used_dose()
	if(ramount < 10) //eats your nutrition to regen epinephrine
		var/regen_amount = owner.nutrition/2000
		owner.nutrition -= regen_amount
		ramount += regen_amount

/obj/item/organ/heart/cybernetic/upgraded/proc/used_dose()
	addtimer(VARSET_CALLBACK(src, dose_available, TRUE), 5 MINUTES)
	ramount = 0

/obj/item/organ/heart/ipc
	name = "IPC heart"
	desc = "An electronic pump that regulates hydraulic functions, they have an auto-restart after EMPs."
	icon_state = "heart-c"
	organ_flags = ORGAN_SYNTHETIC

/obj/item/organ/heart/freedom
	name = "heart of freedom"
	desc = "This heart pumps with the passion to give... something freedom."
	organ_flags = ORGAN_SYNTHETIC //the power of freedom prevents heart attacks
	var/min_next_adrenaline = 0

/obj/item/organ/heart/freedom/on_life()
	. = ..()
	if(owner.health < 5 && world.time > min_next_adrenaline)
		min_next_adrenaline = world.time + rand(250, 600) //anywhere from 4.5 to 10 minutes
		to_chat(owner, "<span class='userdanger'>You feel yourself dying, but you refuse to give up!</span>")
		owner.heal_overall_damage(15, 15)
		if(owner.reagents.get_reagent_amount(/datum/reagent/medicine/ephedrine) < 20)
			owner.reagents.add_reagent(/datum/reagent/medicine/ephedrine, 10)