/* Morgue stuff
 * Contains:
 *		Morgue
 *		Morgue trays
 *		Creamatorium
 *		Creamatorium trays
 */

/*
 * Morgue
 */

#define EXTENDED_TRAY "extended"
#define EMPTY_MORGUE "empty"
#define UNREVIVABLE "unrevivable"
#define REVIVABLE "revivable"
#define NOT_BODY "notbody"
#define GHOST_CONNECTED "ghost"

/obj/structure/morgue
	name = "morgue"
	desc = "Used to keep bodies in until someone fetches them."
	icon = 'icons/obj/stationobjs.dmi'
	icon_state = "morgue"
	density = TRUE
	max_integrity = 400
	dir = EAST
	var/obj/structure/m_tray/connected = null
	var/static/status_descriptors = list(
		EXTENDED_TRAY = "The tray is currently extended.",
		EMPTY_MORGUE = "The tray is currently empty.",
		UNREVIVABLE = "The tray contains an unviable body.",
		REVIVABLE = "The tray contains a body that is responsive to revival techniques.",
		NOT_BODY = "The tray contains something that is not a body.",
		GHOST_CONNECTED = "The tray contains a body that might be responsive."
	)
	anchored = TRUE
	var/open_sound = 'sound/items/deconstruct.ogg'
	var/status
	new_attack_chain = TRUE

/obj/structure/morgue/Initialize(mapload)
	. = ..()
	update_icon(update_state())
	set_light(1, LIGHTING_MINIMUM_POWER)

/obj/structure/morgue/proc/get_revivable(closing)
	var/mob/living/M = locate() in contents
	var/obj/structure/closet/body_bag/B = locate() in contents

	if(!M)
		M = locate() in B

	if(!M)
		return

	if(closing)
		RegisterSignal(M, COMSIG_LIVING_GHOSTIZED, PROC_REF(update_state))
		RegisterSignal(M, COMSIG_LIVING_REENTERED_BODY, PROC_REF(update_state))
		RegisterSignal(M, COMSIG_LIVING_SET_DNR, PROC_REF(update_state))
	else
		UnregisterSignal(M, COMSIG_LIVING_GHOSTIZED)
		UnregisterSignal(M, COMSIG_LIVING_REENTERED_BODY)
		UnregisterSignal(M, COMSIG_LIVING_SET_DNR)

/obj/structure/morgue/proc/update_state()
	if(connected)
		status = EXTENDED_TRAY
		return update_icon(UPDATE_OVERLAYS)

	if(!length(contents))
		status = EMPTY_MORGUE
		return update_icon(UPDATE_OVERLAYS)

	var/mob/living/M = locate() in contents
	var/obj/structure/closet/body_bag/B = locate() in contents

	if(!M)
		M = locate() in B

	if(!M)
		status = NOT_BODY
		return update_icon(UPDATE_OVERLAYS)

	var/mob/dead/observer/G = M.get_ghost()

	if(M.mind && !M.mind.suicided && !M.suiciding)
		if(M.client)
			status = REVIVABLE
			return update_icon(UPDATE_OVERLAYS)

		if(G && G.client) //There is a ghost and it is connected to the server
			status = GHOST_CONNECTED
			return update_icon(UPDATE_OVERLAYS)

	status = UNREVIVABLE
	update_icon(UPDATE_OVERLAYS)

/obj/structure/morgue/update_overlays()
	. = ..()
	underlays.Cut()

	if(!connected)
		. += "morgue_[status]"
		underlays += emissive_appearance(icon, "morgue_[status]")

	if(name != initial(name))
		. += "morgue_label"

/obj/structure/morgue/examine(mob/user)
	. = ..()
	. += "[status_descriptors[status]]"

/obj/structure/morgue/ex_act(severity)
	switch(severity)
		if(1.0)
			for(var/atom/movable/A in src)
				A.forceMove(loc)
				ex_act(severity)
			qdel(src)
			return

		if(2.0)
			if(prob(50))
				for(var/atom/movable/A in src)
					A.forceMove(loc)
					ex_act(severity)
				qdel(src)
				return

		if(3.0)
			if(prob(5))
				for(var/atom/movable/A in src)
					A.forceMove(loc)
					ex_act(severity)
				qdel(src)
				return

/obj/structure/morgue/attack_hand(mob/user as mob)
	toggle_tray()
	add_fingerprint()
	update_state()
	return

/obj/structure/morgue/proc/toggle_tray()
	if(connected)
		for(var/atom/movable/A in connected.loc)
			if(!A.anchored)
				A.forceMove(src)
		get_revivable(TRUE)
		playsound(loc, open_sound, 50, 1)
		QDEL_NULL(connected)
	else
		playsound(loc, open_sound, 50, 1)
		get_revivable(FALSE)
		connect()

/obj/structure/morgue/attack_ai(mob/user)
	if(isrobot(user) && Adjacent(user)) //Robots can open/close it, but not the AI
		attack_hand(user)

/obj/structure/morgue/attack_animal(mob/living/user)
	if(user.a_intent == INTENT_HARM)
		return ..()
	if(user.mob_size < MOB_SIZE_HUMAN)
		return ..()
	if(!user.mind) //Stops mindless mobs from doing weird stuff with them
		return ..()
	attack_hand(user)

/obj/structure/morgue/attack_alien(mob/user)
	if(user.a_intent == INTENT_HARM)
		return ..()
	if(!user.mind)
		return ..()
	attack_hand(user)

/obj/structure/morgue/item_interaction(mob/living/user, obj/item/used, list/modifiers)
	if(is_pen(used))
		rename_interactive(user, used)
		update_icon(UPDATE_OVERLAYS)
		add_fingerprint(user)
		return ITEM_INTERACT_COMPLETE
	return ..()

/obj/structure/morgue/wirecutter_act(mob/user)
	if(name != initial(name))
		to_chat(user, "<span class='notice'>You cut the tag off the morgue.</span>")
		name = initial(name)
		update_icon(UPDATE_OVERLAYS)
		return TRUE

/obj/structure/morgue/relaymove(mob/user)
	if(user.stat)
		return
	connect()

/obj/structure/morgue/proc/connect()
	connected = new /obj/structure/m_tray(loc)
	step(connected, dir)
	connected.layer = BELOW_OBJ_LAYER
	var/turf/T = get_step(src, dir)

	if(T.contents.Find(connected))
		connected.connected = src

		for(var/atom/movable/A in src)
			if(A.move_resist != INFINITY)
				A.forceMove(connected.loc)

		connected.icon_state = "morgue_tray"
		connected.dir = dir
		return

	QDEL_NULL(connected)

/obj/structure/morgue/Destroy()
	if(!connected)
		var/turf/T = loc
		for(var/atom/movable/A in src)
			A.forceMove(T)
	else
		QDEL_NULL(connected)

	return ..()

/obj/structure/morgue/container_resist(mob/living/L)
	var/mob/living/carbon/CM = L

	if(!istype(CM))
		return

	if(CM.stat || CM.restrained())
		return

	to_chat(CM, "<span class='alert'>You attempt to slide yourself out of \the [src]...</span>")
	src.attack_hand(CM)


/obj/structure/morgue/get_remote_view_fullscreens(mob/user)
	if(user.stat == DEAD || !(user.sight & (SEEOBJS|SEEMOBS)))
		user.overlay_fullscreen("remote_view", /atom/movable/screen/fullscreen/stretch/impaired, 2)

/*
 * Morgue tray
 */
/obj/structure/m_tray
	name = "morgue tray"
	desc = "Apply corpse before closing."
	icon = 'icons/obj/stationobjs.dmi'
	icon_state = "morgue_tray"
	density = TRUE
	layer = 2.0
	var/obj/structure/morgue/connected = null
	anchored = TRUE
	pass_flags_self = LETPASSTHROW | PASSTAKE
	max_integrity = 350

/obj/structure/m_tray/attack_hand(mob/user as mob)
	if(connected)
		for(var/atom/movable/A as mob|obj in loc)
			if(!A.anchored)
				A.forceMove(connected)
		connected.connected = null
		connected.update_icon(connected.update_state())
		playsound(loc, connected.open_sound, 50, 1)
		add_fingerprint(user)
		qdel(src)
		return

/obj/structure/m_tray/MouseDrop_T(atom/movable/O, mob/living/user)
	if((!(istype(O, /atom/movable)) || O.anchored || get_dist(user, src) > 1 || get_dist(user, O) > 1 || user.contents.Find(src) || user.contents.Find(O)))
		return

	if(!ismob(O) && !istype(O, /obj/structure/closet/body_bag))
		return

	if(!ismob(user) || HAS_TRAIT(user, TRAIT_HANDS_BLOCKED))
		return

	O.forceMove(loc)

	if(user != O)
		user.visible_message("<span class='warning'>[user] stuffs [O] into [src]!</span>")
	return TRUE


/obj/structure/m_tray/Destroy()
	if(connected && connected.connected == src)
		connected.connected = null

	connected = null
	return ..()

/obj/structure/m_tray/CanPass(atom/movable/mover, border_dir)
	if(istype(mover))
		if(mover.checkpass(PASSTABLE))
			return TRUE
		var/mob/living/our_mover = mover
		if(istype(our_mover) && IS_HORIZONTAL(our_mover) && HAS_TRAIT(our_mover, TRAIT_CONTORTED_BODY))
			return TRUE
	if(locate(/obj/structure/table) in get_turf(mover))
		return TRUE

	return FALSE

/obj/structure/m_tray/CanPathfindPass(to_dir, datum/can_pass_info/pass_info)
	. = !density
	if(pass_info.is_movable)
		. = . || pass_info.pass_flags & PASSTABLE

/obj/structure/m_tray/Process_Spacemove(movement_dir = 0, continuous_move = FALSE)
	return TRUE

/*
 * Crematorium
 */

#define CREMATOR_DESTROYED 0
#define CREMATOR_IN_REPAIR 1
#define CREMATOR_OPERATIONAL 2

GLOBAL_LIST_EMPTY(crematoriums)
// These have so much copypasted code from the above that they should really be made into subtypes
// Someone please I beg
/obj/structure/crematorium
	name = "crematorium"
	desc = "A human incinerator. Works well on barbeque nights."
	icon = 'icons/obj/stationobjs.dmi'
	icon_state = "crema"
	density = TRUE
	max_integrity = 1000
	integrity_failure = 700 // Actual integrity is thus only 300, the max_integrity is so high to prevent it from being destroyed before it's made invincibile once broken
	var/obj/structure/c_tray/connected = null
	anchored = TRUE
	var/cremating = FALSE
	var/id = 1
	var/repairstate = CREMATOR_OPERATIONAL // Repairstate 0 is DESTROYED, 1 has the igniter applied but needs welding (IN_REPAIR), 2 is OPERATIONAL
	var/locked = FALSE
	var/open_sound = 'sound/items/deconstruct.ogg'
	new_attack_chain = TRUE

/obj/structure/crematorium/Initialize(mapload)
	. = ..()
	GLOB.crematoriums += src
	update_icon(UPDATE_OVERLAYS)

/obj/structure/crematorium/update_overlays()
	. = ..()
	if(connected)
		return

	. += "crema_closed"

	if(cremating)
		. += "crema_active"
		return

	if(length(contents))
		. += "crema_full"

/obj/structure/crematorium/attack_hand(mob/user as mob)
	if(cremating)
		to_chat(usr, "<span class='warning'>It's locked.</span>")
		return

	if(connected && !locked)
		for(var/atom/movable/A in connected.loc)
			if(!(A.anchored) && A.move_resist != INFINITY)
				A.forceMove(src)

		playsound(loc, open_sound, 50, 1)
		QDEL_NULL(connected)

	else if(!locked)
		playsound(loc, open_sound, 50, 1)
		connect()

	add_fingerprint(user)
	update_icon(UPDATE_OVERLAYS)

/obj/structure/crematorium/obj_break(damage_flag)
	if(broken)
		return
	visible_message("<span class='warning'>[src] dims as its paneling collapses and it becomes non-functional.</span>")
	icon_state = "crema_broke" // this will need a proper sprite when possible, as it's just a shitty codersprite
	resistance_flags = INDESTRUCTIBLE // prevents it from being destroyed instead of just broken
	name = "broken crematorium"
	desc = "A broken human incinerator. No longer works well on barbeque nights. It requires a new igniter to be repaired."
	repairstate = CREMATOR_DESTROYED
	broken = TRUE
	cremating = FALSE
	update_icon(UPDATE_OVERLAYS)
	GLOB.crematoriums -= src

/obj/structure/crematorium/welder_act(mob/user, obj/item/I)
	if(user.a_intent == INTENT_HARM) // if you want to damage it with a welder you should be able to
		return
	if(!broken)
		to_chat(user, "<span class='notice'>The crematorium does not seem to need fixing.</span>")
		return TRUE
	if(!I.tool_use_check(user, 0))
		return TRUE
	if(repairstate != CREMATOR_IN_REPAIR)
		to_chat(user, "<span class='notice'>[src] needs a new igniter before you weld the paneling closed.</span>")
		return TRUE
	WELDER_ATTEMPT_REPAIR_MESSAGE
	if(!I.use_tool(src, user, 3 SECONDS, volume = I.tool_volume))
		return TRUE
	WELDER_REPAIR_SUCCESS_MESSAGE
	icon_state = initial(icon_state)
	resistance_flags = NONE
	name = initial(name)
	desc = initial(desc)
	repairstate = CREMATOR_OPERATIONAL
	broken = FALSE
	obj_integrity = max_integrity
	GLOB.crematoriums += src
	return TRUE

/obj/structure/crematorium/item_interaction(mob/living/user, obj/item/used, list/modifiers)
	if(is_pen(used))
		rename_interactive(user, used)
		add_fingerprint(user)
		return ITEM_INTERACT_COMPLETE
	if(istype(used, /obj/item/assembly/igniter))
		if(repairstate == CREMATOR_DESTROYED)
			user.visible_message("<span class='notice'>[user] replaces [src]'s igniter.</span>", "<span class='notice'>You replace [src]'s damaged igniter. Now it just needs its paneling welded.</span>")
			repairstate = CREMATOR_IN_REPAIR
			desc = "A broken human incinerator. No longer works well on barbeque nights. It requires its paneling to be welded to function."
			qdel(used)
		else
			to_chat(user, "<span class='notice'>[src] does not need its igniter replaced.</span>")
		return ITEM_INTERACT_COMPLETE
	return ..()

/obj/structure/crematorium/relaymove(mob/user as mob)
	if(user.stat || locked)
		return

	connect()


/obj/structure/crematorium/proc/connect()
	connected = new /obj/structure/c_tray(loc)
	step(connected, SOUTH)
	connected.layer = BELOW_OBJ_LAYER

	var/turf/T = get_step(src, SOUTH)

	if(T.contents.Find(connected))
		connected.connected = src
		update_icon(UPDATE_OVERLAYS)

		for(var/atom/movable/A in src)
			A.forceMove(connected.loc)

		connected.icon_state = "crema_tray"
		return

	QDEL_NULL(connected)

/obj/structure/crematorium/proc/cremate(mob/user as mob)
	if(cremating)
		return //don't let you cremate something twice or w/e

	if(!length(contents))
		for(var/mob/M in viewers(src))
			M.show_message("<span class='warning'>You hear a hollow crackle.</span>", EMOTE_VISIBLE)

		return
	for(var/mob/living/M in search_contents_for(/mob/living)) //search for this for funny cling shenaigins first.
		if(HAS_TRAIT(M, TRAIT_CLING_BURSTING))
			visible_message("<span class='warning'>The crematorium fails to start, something big is blocking the pipes!</span>")
			return

	for(var/mob/M in viewers(src))
		M.show_message("<span class='warning'>You hear a roar as the crematorium activates.</span>", EMOTE_VISIBLE)

	cremating = TRUE
	locked = TRUE
	update_icon(UPDATE_OVERLAYS)

	for(var/mob/living/M in search_contents_for(/mob/living))
		if(QDELETED(M))
			continue

		if(M.stat != DEAD)
			M.emote("scream")

		if(istype(user))
			add_attack_logs(user, M, "Cremated")

		M.death(TRUE)

		if(QDELETED(M))
			continue // Re-check for mobs that delete themselves on death

		M.ghostize()
		qdel(M)

	for(var/obj/O in contents) //obj instead of obj/item so that bodybags and ashes get destroyed. We dont want tons and tons of ash piling up
		qdel(O)

	new /obj/effect/decal/cleanable/ash(src)
	sleep(30)
	cremating = FALSE
	locked = FALSE
	update_icon(UPDATE_OVERLAYS)
	playsound(loc, 'sound/machines/ding.ogg', 50, 1)


/obj/structure/crematorium/Destroy()
	GLOB.crematoriums -= src

	if(!connected)
		var/turf/T = loc
		for(var/atom/movable/A in src)
			A.forceMove(T)
	else
		QDEL_NULL(connected)

	return ..()

/obj/structure/crematorium/container_resist(mob/living/L)
	var/mob/living/carbon/CM = L
	if(!istype(CM))
		return
	if(CM.stat || CM.restrained())
		return

	to_chat(CM, "<span class='alert'>You attempt to slide yourself out of \the [src]...</span>")
	attack_hand(CM)

/obj/structure/crematorium/get_remote_view_fullscreens(mob/user)
	if(user.stat == DEAD || !(user.sight & (SEEOBJS|SEEMOBS)))
		user.overlay_fullscreen("remote_view", /atom/movable/screen/fullscreen/stretch/impaired, 2)

/*
 * Crematorium tray
 */
/obj/structure/c_tray
	name = "crematorium tray"
	desc = "Apply body before burning."
	icon = 'icons/obj/stationobjs.dmi'
	icon_state = "crema_tray"
	density = TRUE
	resistance_flags = INDESTRUCTIBLE
	layer = 2.0
	var/obj/structure/crematorium/connected = null
	anchored = TRUE
	pass_flags_self = LETPASSTHROW | PASSTAKE

/obj/structure/c_tray/attack_hand(mob/user as mob)
	if(connected)
		for(var/atom/movable/A in loc)
			if(!A.anchored)
				A.forceMove(connected)

		connected.connected = null
		connected.update_icon(UPDATE_OVERLAYS)
		add_fingerprint(user)
		qdel(src)


/obj/structure/c_tray/MouseDrop_T(atom/movable/O, mob/living/user)
	if((!istype(O, /atom/movable) || O.anchored || get_dist(user, src) > 1 || get_dist(user, O) > 1 || user.contents.Find(src) || user.contents.Find(O)))
		return
	if(!ismob(O) && !istype(O, /obj/structure/closet/body_bag))
		return
	if(!ismob(user) || HAS_TRAIT(user, TRAIT_HANDS_BLOCKED))
		return
	O.forceMove(loc)
	if(user != O)
		user.visible_message("<span class='warning'>[user] stuffs [O] into [src]!</span>")
			//Foreach goto(99)
	return TRUE

/obj/structure/c_tray/Destroy()
	if(connected && connected.connected == src)
		connected.connected = null
	connected = null
	return ..()

/obj/structure/c_tray/Process_Spacemove(movement_dir = 0, continuous_move = FALSE)
	return TRUE

// Crematorium switch
/obj/machinery/crema_switch
	desc = "Burn baby burn!"
	name = "crematorium igniter"
	icon = 'icons/obj/power.dmi'
	icon_state = "crema_switch"
	resistance_flags = INDESTRUCTIBLE // could use a more elegant solution like being able to be rebuilt, broken and repaired, or by directly attaching the switch to the crematorium
	idle_power_consumption = 100
	active_power_consumption = 5000
	anchored = TRUE
	req_access = list(ACCESS_CREMATORIUM)
	/// ID of the crematorium to hook into
	var/id = 1

/obj/machinery/crema_switch/attack_ghost(mob/user)
	if(user.can_advanced_admin_interact())
		return attack_hand(user)

/obj/machinery/crema_switch/attack_hand(mob/user)
	if(!has_power(power_channel)) // Do we have power?
		return

	if(!(allowed(usr) || user.can_advanced_admin_interact()))
		to_chat(usr, "<span class='warning'>Access denied.</span>")
		return

	use_power(400000)
	for(var/obj/structure/crematorium/C in GLOB.crematoriums)
		if(C.id == id && !C.cremating)
			C.cremate(user)


/mob/proc/update_morgue()
	if(stat == DEAD)
		var/obj/structure/morgue/morgue
		var/mob/living/C = src
		var/mob/dead/observer/G = src
		if(istype(G) && G.can_reenter_corpse && G.mind) //We're a ghost, let's find our corpse
			C = G.mind.current
		if(istype(C)) //We found our corpse, is it inside a morgue?
			morgue = get(C.loc, /obj/structure/morgue)
			if(morgue)
				morgue.update_icon(UPDATE_OVERLAYS)

#undef EXTENDED_TRAY
#undef EMPTY_MORGUE
#undef UNREVIVABLE
#undef REVIVABLE
#undef NOT_BODY
#undef GHOST_CONNECTED
#undef CREMATOR_DESTROYED
#undef CREMATOR_IN_REPAIR
#undef CREMATOR_OPERATIONAL