//Procedures in this file: Inernal wound patching, Implant removal.
//////////////////////////////////////////////////////////////////
//					INTERNAL WOUND PATCHING						//
//////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////
// Internal Bleeding Surgery
///////////////////////////////////////////////////////////////

/datum/surgery_step/fix_vein
	priority = 2
	allowed_tools = list(
	/obj/item/weapon/surgical/FixOVein = 100, \
	/obj/item/stack/cable_coil = 75
	)
	can_infect = 1
	blood_level = 1

	min_duration = 70
	max_duration = 90

/datum/surgery_step/fix_vein/can_use(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	if(!hasorgans(target))
		return 0

	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	if(!affected) return
	if(coverage_check(user, target, affected, tool))
		return 0
	var/internal_bleeding = 0
	for(var/datum/wound/W in affected.wounds) if(W.internal)
		internal_bleeding = 1
		break

	return affected.open == (affected.encased ? 3 : 2) && internal_bleeding

/datum/surgery_step/fix_vein/begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	user.visible_message("[user] starts patching the damaged vein in [target]'s [affected.name] with \the [tool]." , \
	"You start patching the damaged vein in [target]'s [affected.name] with \the [tool].")
	target.custom_pain("The pain in [affected.name] is unbearable!", 100)
	..()

/datum/surgery_step/fix_vein/end_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	user.visible_message("<font color='blue'>[user] has patched the damaged vein in [target]'s [affected.name] with \the [tool].</font>", \
		"<font color='blue'>You have patched the damaged vein in [target]'s [affected.name] with \the [tool].</font>")

	for(var/datum/wound/W in affected.wounds) if(W.internal)
		affected.wounds -= W
		affected.update_damages()
	if (ishuman(user) && prob(40)) user:bloody_hands(target, 0)

/datum/surgery_step/fix_vein/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	user.visible_message("<font color='red'>[user]'s hand slips, smearing [tool] in the incision in [target]'s [affected.name]!</font>" , \
	"<font color='red'>Your hand slips, smearing [tool] in the incision in [target]'s [affected.name]!</font>")
	affected.take_damage(5, 0)

///////////////////////////////////////////////////////////////
// Necrosis Surgery Step 1
///////////////////////////////////////////////////////////////
/datum/surgery_step/fix_dead_tissue        //Debridement
	priority = 2
	allowed_tools = list(
		/obj/item/weapon/surgical/scalpel = 100,        \
		/obj/item/weapon/material/knife = 75,    \
		/obj/item/weapon/material/shard = 50,         \
	)

	can_infect = 1
	blood_level = 1

	min_duration = 110
	max_duration = 160

/datum/surgery_step/fix_dead_tissue/can_use(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	if(!hasorgans(target))
		return 0

	if (target_zone == O_MOUTH || target_zone == O_EYES)
		return 0

	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	if(coverage_check(user, target, affected, tool))
		return 0

	return affected && affected.open >= 2 && (affected.status & ORGAN_DEAD)

/datum/surgery_step/fix_dead_tissue/begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	user.visible_message("[user] starts cutting away necrotic tissue in [target]'s [affected.name] with \the [tool]." , \
	"You start cutting away necrotic tissue in [target]'s [affected.name] with \the [tool].")
	target.custom_pain("The pain in [affected.name] is unbearable!", 100)
	..()

/datum/surgery_step/fix_dead_tissue/end_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	user.visible_message("<font color='blue'>[user] has cut away necrotic tissue in [target]'s [affected.name] with \the [tool].</font>", \
		"<font color='blue'>You have cut away necrotic tissue in [target]'s [affected.name] with \the [tool].</font>")
	affected.open = 3

/datum/surgery_step/fix_dead_tissue/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	user.visible_message("<font color='red'>[user]'s hand slips, slicing an artery inside [target]'s [affected.name] with \the [tool]!</font>", \
	"<font color='red'>Your hand slips, slicing an artery inside [target]'s [affected.name] with \the [tool]!</font>")
	affected.createwound(CUT, 20, 1)

///////////////////////////////////////////////////////////////
// Necrosis Surgery Step 2
///////////////////////////////////////////////////////////////
/datum/surgery_step/treat_necrosis
	priority = 2
	allowed_tools = list(
		/obj/item/weapon/reagent_containers/dropper = 100,
		/obj/item/weapon/reagent_containers/glass/bottle = 75,
		/obj/item/weapon/reagent_containers/glass/beaker = 75,
		/obj/item/weapon/reagent_containers/spray = 50,
		/obj/item/weapon/reagent_containers/glass/bucket = 50,
	)

	can_infect = 0
	blood_level = 0

	min_duration = 50
	max_duration = 60

/datum/surgery_step/treat_necrosis/can_use(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	if (!istype(tool, /obj/item/weapon/reagent_containers))
		return 0

	var/obj/item/weapon/reagent_containers/container = tool
	if(!container.reagents.has_reagent("peridaxon"))
		return 0

	if(!hasorgans(target))
		return 0

	if (target_zone == O_MOUTH || target_zone == O_EYES)
		return 0

	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	if(coverage_check(user, target, affected, tool))
		return 0
	return affected && affected.open == 3 && (affected.status & ORGAN_DEAD)

/datum/surgery_step/treat_necrosis/begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)
	user.visible_message("[user] starts applying medication to the affected tissue in [target]'s [affected.name] with \the [tool]." , \
	"You start applying medication to the affected tissue in [target]'s [affected.name] with \the [tool].")
	target.custom_pain("Something in your [affected.name] is causing you a lot of pain!", 50)
	..()

/datum/surgery_step/treat_necrosis/end_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)

	if (!istype(tool, /obj/item/weapon/reagent_containers))
		return

	var/obj/item/weapon/reagent_containers/container = tool

	var/trans = container.reagents.trans_to_mob(target, container.amount_per_transfer_from_this, CHEM_BLOOD) //technically it's contact, but the reagents are being applied to internal tissue
	if (trans > 0)
		affected.status &= ~ORGAN_DEAD
		affected.owner.update_icons_body()

		user.visible_message("<font color='blue'>[user] applies [trans] units of the solution to affected tissue in [target]'s [affected.name].</font>", \
			"<font color='blue'>You apply [trans] units of the solution to affected tissue in [target]'s [affected.name] with \the [tool].</font>")

/datum/surgery_step/treat_necrosis/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/organ/external/affected = target.get_organ(target_zone)

	if (!istype(tool, /obj/item/weapon/reagent_containers))
		return

	var/obj/item/weapon/reagent_containers/container = tool

	var/trans = container.reagents.trans_to_mob(target, container.amount_per_transfer_from_this, CHEM_BLOOD)

	user.visible_message("<font color='red'>[user]'s hand slips, applying [trans] units of the solution to the wrong place in [target]'s [affected.name] with the [tool]!</font>" , \
	"<font color='red'>Your hand slips, applying [trans] units of the solution to the wrong place in [target]'s [affected.name] with the [tool]!</font>")

	//no damage or anything, just wastes medicine

///////////////////////////////////////////////////////////////
// Hardsuit Removal Surgery
///////////////////////////////////////////////////////////////

/datum/surgery_step/hardsuit
	allowed_tools = list(
		/obj/item/weapon/weldingtool = 80,
		/obj/item/weapon/surgical/circular_saw = 60,
		/obj/item/weapon/pickaxe/plasmacutter = 100
		)
	req_open = 0

	can_infect = 0
	blood_level = 0

	min_duration = 120
	max_duration = 180

/datum/surgery_step/hardsuit/can_use(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	if(!istype(target))
		return 0
	if(istype(tool,/obj/item/weapon/weldingtool))
		var/obj/item/weapon/weldingtool/welder = tool
		if(!welder.isOn() || !welder.remove_fuel(1,user))
			return 0
	return (target_zone == BP_TORSO) && ((istype(target.back, /obj/item/weapon/rig) && !(target.back.canremove)) || (istype(target.belt, /obj/item/weapon/rig) && !(target.belt.canremove)))

/datum/surgery_step/hardsuit/begin_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/weapon/rig/rig = target.back
	if(!istype(rig))
		rig = target.belt
		if(!istype(rig))
			return
	user.visible_message("[user] starts cutting through the support systems of \the [rig] on [target] with \the [tool]." , \
	"You start cutting through the support systems of \the [rig] on [target] with \the [tool].")
	..()

/datum/surgery_step/hardsuit/end_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	var/obj/item/weapon/rig/rig = target.back
	if(!istype(rig))
		rig = target.belt
		if(!istype(rig))
			return
	rig.reset()
	user.visible_message("<span class='notice'>[user] has cut through the support systems of \the [rig] on [target] with \the [tool].</span>", \
		"<span class='notice'>You have cut through the support systems of \the [rig] on [target] with \the [tool].</span>")

/datum/surgery_step/hardsuit/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
	user.visible_message("<span class='danger'>[user]'s [tool] can't quite seem to get through the metal...</span>", \
	"<span class='danger'>\The [tool] can't quite seem to get through the metal. It's weakening, though - try again.</span>")