var/global/datum/crafting_controller/crafting_master

/datum/crafting_recipe
	var/name = ""
	var/reqs[] = list()
	var/result_path
	var/tools[] = list()
	var/time = 0
	var/parts[] = list()
	var/chem_catalists[] = list()
	var/can_be_deconstructed = 0

/datum/crafting_recipe/New()
	crafting_master.all_crafting_recipes[name] = src

/datum/crafting_recipe/table/New()
	..()
	crafting_master.add_recipe_to_family("table", src)


/datum/crafting_controller
	var/list/families = list()
	var/list/all_crafting_points = list()
	var/list/all_crafting_recipes = list()

/hook/startup/proc/setupCraftingMaster()
	crafting_master = new /datum/crafting_controller()
	return 1

/datum/crafting_controller/New()
	crafting_master = src
	add_family("table")
	add_family("forge")
	for(var/A in typesof(/datum/crafting_recipe))
		if(A == /datum/crafting_recipe)
			continue
		var/datum/crafting_recipe/CR = new A()
		all_crafting_recipes[CR.name] = CR

/datum/crafting_controller/proc/add_global_recipe(datum/crafting_recipe/CR)
	all_crafting_recipes[CR.name] = CR

/datum/crafting_controller/proc/remove_global_recipe(datum/crafting_recipe/CR)
	all_crafting_recipes[CR.name] = null
	all_crafting_recipes.Remove(CR.name)

/datum/crafting_controller/proc/add_family(name, list/members, list/recipes)
	var/datum/crafting_family/family = new(name, members, recipes)
	families[name] = family

/datum/crafting_controller/proc/get_family_by_name(name)
	return families[name]

/datum/crafting_controller/proc/add_member_to_family(family_name, member)
	var/datum/crafting_family/family = families[family_name]
	family.add_member(member)

/datum/crafting_controller/proc/add_recipe_to_family(family_name, datum/crafting_recipe/recipe)
	var/datum/crafting_family/family = families[family_name]
	family.add_recipe(recipe)

/datum/crafting_controller/proc/remove_recipe_from_family(family_name, datum/crafting_recipe/recipe)
	var/datum/crafting_family/family = families[family_name]
	family.remove_recipe(recipe)

/datum/crafting_controller/proc/remove_member(family_name, member)
	var/datum/crafting_family/family = families[family_name]
	family.remove_member(member)

/datum/crafting_controller/proc/remove_family(family_name)
	var/datum/crafting_family/family = families[family_name]
	del(family)

/datum/crafting_family
	var/name
	var/list/recipes
	var/list/members

/datum/crafting_family/New(new_name, list/new_members = list(), list/new_recipes = list())
	name = new_name
	recipes = new_recipes
	members = new_members

/datum/crafting_family/proc/add_member(datum/crafting_holder/member)
	members |= member
	member.family = src

/datum/crafting_family/proc/remove_member(datum/crafting_holder/member)
	members -= member
	member.family = null

/datum/crafting_family/proc/add_recipe(datum/crafting_recipe/recipe)
	recipes[recipe.name] = recipe

/datum/crafting_family/proc/remove_recipe(datum/crafting_recipe/recipe)
	recipes[recipe.name] = null
	recipes.Remove(recipe.name)


/datum/crafting_holder
	var/name
	var/atom/holder
	var/recipes
	var/busy
	var/datum/crafting_family/family

/datum/crafting_holder/New(atom/location, family_name)
	location.craft_holder = src
	holder = location
	spawn(50)
		if(crafting_master)
			crafting_master.all_crafting_points |= src
			if(family_name)
				family = crafting_master.get_family_by_name(family_name)
			if(family)
				recipes = family.recipes

/datum/crafting_holder/proc/add_recipe(recipe)
	recipes |= recipe

/datum/crafting_holder/proc/remove_recipe(recipe)
	recipes -= recipe

/datum/crafting_holder/proc/deconstruct(mob/user, datum/crafting_recipe/R)
	if(!R.can_be_deconstructed)
		return
	var/list/result = list()
	var/list/holder_contents = check_holder()
	var/atom/movable/target = locate(R.result_path) in holder_contents
	if(!target)
		return
	if(check_tools(user, R, holder_contents))
		for(var/A in R.reqs)
			var/amount = R.reqs[A]
			if(ispath(A, /datum/reagent))
				for(var/obj/item/weapon/reagent_containers/RC in holder_contents)
					var/diff = RC.reagents.total_volume - RC.reagents.maximum_volume
					if(diff)
						diff = min(diff, amount)
						var/datum/reagent/C = new A()
						C.volume = diff
						RC.reagents.reagent_list.Add(C)
						RC.reagents.total_volume += diff
						result.Add(C)
						amount -= diff
						if(!amount)
							break
			else
				while(amount)
					result.Add(new A(holder.loc))
					amount--
	qdel(target)
	return result

/datum/crafting_holder/proc/check_contents(datum/crafting_recipe/R, list/holder_contents)
	main_loop:
		for(var/A in R.reqs)
			for(var/B in holder_contents)
				if(ispath(B, A))
					if(holder_contents[B] >= R.reqs[A])
						continue main_loop
			return 0
	for(var/A in R.chem_catalists)
		if(holder_contents[A] < R.chem_catalists[A])
			return 0
	return 1

/datum/crafting_holder/proc/check_holder()
	var/list/holder_contents = list()
	for(var/obj/I in holder.loc)
		if(istype(I, /obj/item/stack))
			var/obj/item/stack/S = I
			holder_contents[I.type] += S.amount
		else
			if(istype(I, /obj/item/weapon/reagent_containers))
				for(var/datum/reagent/R in I.reagents.reagent_list)
					holder_contents[R.type] += R.volume

			holder_contents[I.type] += 1

	return holder_contents

/datum/crafting_holder/proc/check_tools(mob/user, datum/crafting_recipe/R, list/holder_contents)
	if(!R.tools.len)
		return 1
	var/list/possible_tools = list()
	for(var/obj/item/I in user.contents)
		if(istype(I, /obj/item/weapon/storage))
			for(var/obj/item/SI in I.contents)
				possible_tools += SI.type
		else
			possible_tools += I.type
	possible_tools += holder_contents
	var/i = R.tools.len
	var/I
	for(var/A in R.tools)
		I = possible_tools.Find(A)
		if(I)
			possible_tools.Cut(I, I+1)
			i--
		else
			break
	return !i

/datum/crafting_holder/proc/construct_item(mob/user, datum/crafting_recipe/R)
	var/list/holder_contents = check_holder()
	if(check_contents(R, holder_contents) && check_tools(user, R, holder_contents))
		if(do_after(user, R.time))
			if(!check_contents(R, holder_contents) || !check_tools(user, R, holder_contents))
				return 0
			var/list/parts = del_reqs(R, holder_contents)
			var/atom/movable/I = new R.result_path
			for(var/A in parts)
				if(istype(A, /obj/item))
					var/atom/movable/B = A
					B.loc = I
				else
					if(!I.reagents)
						I.reagents = new /datum/reagents()
					I.reagents.reagent_list.Add(A)
			I.CheckParts()
			I.loc = holder.loc
			return 1
	return 0

/datum/crafting_holder/proc/del_reqs(datum/crafting_recipe/R, list/holder_contents)
	var/list/Deletion = list()
	var/amt
	for(var/A in R.reqs)
		amt = R.reqs[A]
		if(ispath(A, /obj/item/stack))
			var/obj/item/stack/S
			stack_loop:
				for(var/B in holder_contents)
					if(ispath(B, A))
						while(amt > 0)
							S = locate(B) in holder.loc
							if(S.amount >= amt)
								S.use(amt)
								break stack_loop
							else
								amt -= S.amount
								qdel(S)
		else if(ispath(A, /obj/item))
			var/obj/item/I
			item_loop:
				for(var/B in holder_contents)
					if(ispath(B, A))
						while(amt > 0)
							I = locate(B) in holder.loc
							Deletion.Add(I)
							amt--
						break item_loop
		else
			var/datum/reagent/RG = new A
			reagent_loop:
				for(var/B in holder_contents)
					if(ispath(B, /obj/item/weapon/reagent_containers))
						var/obj/item/RC = locate(B) in holder.loc
						if(RC.reagents.has_reagent(RG.id, amt))
							RC.reagents.remove_reagent(RG.id, amt)
							RG.volume = amt
							Deletion.Add(RG)
							break reagent_loop
						else if(RC.reagents.has_reagent(RG.id))
							Deletion.Add(RG)
							RG.volume += RC.reagents.get_reagent_amount(RG.id)
							amt -= RC.reagents.get_reagent_amount(RG.id)
							RC.reagents.del_reagent(RG.id)

	for(var/A in R.parts)
		for(var/B in Deletion)
			if(!istype(B, A))
				Deletion.Remove(B)
				qdel(B)
	return Deletion

/datum/crafting_holder/proc/interact(mob/user)
	var/list/holder_contents = check_holder()
	if(!holder_contents.len)
		return
	var/dat = "<h3>Construction menu</h3>"
	dat += "<div class='statusDisplay'>"
	if(busy)
		dat += "Construction inprogress...</div>"
	else
		for(var/A in recipes)
			var/datum/crafting_recipe/R = recipes[A]
			if(check_contents(R, holder_contents))
				dat += "<A href='?src=\ref[src];make=\ref[R]'>[R.name]</A><BR>"
		dat += "</div>"

	var/datum/browser/popup = new(user, "craft", "Craft", 300, 300)
	popup.set_content(dat)
	popup.open()
	return

/datum/crafting_holder/Topic(href, href_list)
	if(usr.stat || !holder.Adjacent(usr) || usr.lying)
		return
	if(href_list["make"])
		if(busy)
			return
		busy = 1
		interact(usr)
		var/datum/crafting_recipe/TR = locate(href_list["make"])
		if(construct_item(usr, TR))
			usr << "<span class='notice'>[TR.name] constructed.</span>"
		else
			usr << "<span class ='warning'>Construction failed.</span>"
		busy = 0
		interact(usr)