#define OPEN 1
#define CLOSED 0
#define SCREWSHUT 3

/obj/structure/shipsystem
	name = "system"
	desc = "..This shouldn't be here. What have you done?"
	density = 1
	anchored = 1

	icon = 'StarTrek13/icons/trek/subsystem_parts.dmi'
	icon_state = "system"
	var/basestate = "system"

	verb_say = "states"
	verb_yell = "blares"

	var/heat = 0
	var/heat_max_threshhold = 10000
	var/maximum_integrity = 1000
	var/integrity
	var/efficiency = 60 // 1 - 100, it's a percentage. If this hits zero, it's going to heat up like one crazy motherfucker
	var/active
	var/failed

	var/panel = SCREWSHUT
	var/repair_stage = 0
	var/brute_damage = 0//Damage that can be repaired by a welder
	var/electric_damage = 0//Damage that can be repaired by wiring (NOTABLY harder to repair, because of a higher skill requirement)

/obj/structure/shipsystem/New()
	..()
	integrity = maximum_integrity
	START_PROCESSING(SSobj, src)
	start()

/obj/structure/shipsystem/update_icon()
	overlays = null
	icon_state = "[basestate]"
	if(active)
		icon_state = "[icon_state]_active"
	if(panel == OPEN)
		overlays += "panel_open"

/obj/structure/shipsystem/process()
	if(integrity < 0 || heat > heat_max_threshhold && active)
		fail()

	if(active)
		var/heat_gained = 100/efficiency
		if(prob(60))
			heat += heat_gained
	else
		heat--

/obj/structure/shipsystem/proc/fail()
	active = FALSE
	failed = TRUE
	panel = OPEN
	//STOP_PROCESSING(SSobj, src)
	visible_message("<span class='warning'>The [src] blinks out as sparks spray out!</span>")
	var/datum/effect_system/spark_spread/s = new /datum/effect_system/spark_spread
	s.set_up(3, 1, src)
	s.start()
	playsound(src,'sound/effects/sparks4.ogg',50,1)
	update_icon()

/obj/structure/shipsystem/proc/start()
	active = TRUE
	say("Initializing systems..")
	update_icon()

/obj/structure/shipsystem/proc/damage(var/damage, var/damtype = "BRUTE", var/modifier = 1)
	if(failed || integrity <= 0)
		return

	if(panel == OPEN)
		modifier++
	if(repair_stage > 1)
		modifier ++
	damage = damage*modifier

	var/end_result = integrity - damage
	if(end_result < 0)
		damage = damage + end_result
	integrity -= damage

	if(damtype == "BRUTE")
		brute_damage += damage
	if(damtype == "BURN")
		electric_damage += damage

/obj/structure/shipsystem/examine(var/mob/user)
	..()

	if(panel == CLOSED || panel == SCREWSHUT)
		to_chat(user, "The panel is <b>closed</b>.")
	else
		to_chat(user, "The panel is <b>open</b>.")
	if(panel == OPEN)
		var/datum/skill/skill = user.skills.getskill("construction and maintenance")
		if(skill.value > 2)
			switch(brute_damage)
				if(0)
					to_chat(user, "<span class='info'>The interior structuring of [src] appears fine.</span>")
				if(1 to maximum_integrity*0.20)
					to_chat(user, "<span class='usrdanger'>The internal structuring looks dented.</span>")
				if(maximum_integrity*0.21 to maximum_integrity*0.61)
					to_chat(user, "<span class='usrdanger'>The internal structuring looks damaged.</span>")
				if(maximum_integrity*0.61 to INFINITY)
					to_chat(user, "<span class='usrdanger'>The internal structuring looks severely damaged!.</span>")
		if(!skill.value > 4)
			switch(electric_damage)
				if(0)
					to_chat(user, "<span class='info'>The interior wiring of [src] appears fine.</span>")
				if(1 to maximum_integrity*0.20)
					to_chat(user, "<span class='userdanger'>The internal structuring looks dented.</span>")
				if(maximum_integrity*0.21 to maximum_integrity*0.61)
					to_chat(user, "<span class='userdanger'>The internal structuring looks damaged.</span>")
				if(maximum_integrity*0.61 to INFINITY)
					to_chat(user, "<span class='userdanger'>The internal structuring looks severely damaged!.</span>")

/obj/structure/shipsystem/attack_hand(var/mob/user)
	add_fingerprint(user)
	switch(panel)
		if(SCREWSHUT)
			to_chat(user, "<span class='userdanger'>[src]'s panel is screwed shut.</span>")
		if(CLOSED)
			to_chat(user, "<span class='info'>You open the [src]'s panel.</span>")
			panel = OPEN
			update_icon()
			return
		if(OPEN)
			to_chat(user, "<span class='info'>You close the [src]'s panel.</span>")
			panel = CLOSED
			update_icon()


/obj/structure/shipsystem/attackby(var/obj/item/P, var/mob/user)//if(!do_after(user, 10, target = src))
	if(user.a_intent == INTENT_HARM)
		return ..()

	if(istype(P, /obj/item/screwdriver))
		if(panel == OPEN)
			to_chat(user, "<span class='userdanger'>Close the panel before attempting to screw it closed!</span>")
			return //Change me if the screwdriver is later required in repairing
		to_chat(user, "<span class='info'>You [panel ? "un" : ""]screw the panel[panel ? " in." : "."]</span>")
		playsound(src.loc, P.usesound, 50, 1)
		if(panel == SCREWSHUT)
			to_chat(user, "<span class='info'>You unscrew the panel.</span>")
			panel = CLOSED
			return
		panel = SCREWSHUT
		return

	if(istype(P, /obj/item/wirecutters))
		if(panel == CLOSED || panel == SCREWSHUT)
			//attempt to activate
			if(!failed)
				playsound(src.loc, P.usesound, 50, 1)
				if(!active)
					start()
				active = !active
				to_chat(user, "<span class='info'>You [active ? "deactivate" : "activate"] [src].</span>")
				update_icon()