extends Control
const TRADE_CARD = preload("res://scene/trade_card.tscn")
var npc_data:Dictionary
var npc_id:String
#当前选择的对方背包里的物品的序列
var now_select_other_item_ind:int=0
#当前选择的自己背包的物品的序列
var now_select_self_item_ind:int=0

var favor:int=0:
	set(val):
		favor=val
		%sold_value.text=str(clamp((200-favor),50,200))+"%"
		%back_value.text=str(clamp((50+favor),50,150))+"%"
#NPC拥有金钱
var other_gold:int=0:
	set(val):
		%other_gold.text=str(val)
		other_gold=val
func set_data(npc_id:String):
	npc_data=Global.get_now_game_npc_data(npc_id)
	favor=Global.get_now_game_npc_favor(npc_id)
	%trade_name.text=npc_data["name"]
	fresh()
	pass
func fresh():
	%self_item_panel.hide()
	%other_item_panel.hide()
	other_gold=npc_data["gold"]
	%self_gold.text=str(Global.get_currency_game(1))
	for i in %other_bag.get_children():
		i.queue_free()
	for i in %self_bag.get_children():
		i.queue_free()
	var sold_item:Array=npc_data["sold_item"]
	for i in sold_item.size():
		var new_card=TRADE_CARD.instantiate()
		%other_bag.add_child(new_card)
		var i_data=sold_item[i]
		new_card.discount=clamp((2-float(favor)/100),0.5,2)
		new_card.set_item(i_data)
		new_card.click.connect(other_bag_card_click.bind([i,i_data]))
	var self_item=Global.get_all_item_game_data()
	for i in self_item.size():
		var new_card=TRADE_CARD.instantiate()
		%self_bag.add_child(new_card)
		new_card.discount=clamp(0.5+float(favor)/100,0.5,1.5)
		new_card.set_item(self_item[i])
		new_card.click.connect(self_bag_card_click.bind([i,self_item[i]]))
	
func other_bag_card_click(arr:Array):
	var ind:int=arr[0]
	var data=arr[1]
	now_select_other_item_ind=ind
	var item_data=npc_data["sold_item"][ind]
	%other_item_panel.show()
	%self_item_panel.hide()
	%other_item_icon.texture=Database.get_texture(item_data["texture"])
	%other_item_introduction.text=item_data["introduction"]
	if int(item_data["price"]*clamp((2-float(favor)/100),0.5,2))>Global.get_currency_game(1):
		%other_item_accept_btn.disable(true)
	else:
		%other_item_accept_btn.disable(false)

func self_bag_card_click(arr:Array):
	var ind:int=arr[0]
	var data=arr[1]
	now_select_self_item_ind=ind
	var item_data=data
	%self_item_panel.show()
	%other_item_panel.hide()
	%self_item_icon.texture=Database.get_texture(item_data["texture"])
	%self_item_introduction.text=item_data["introduction"]
	if int(item_data["price"]*clamp(0.5+float(favor)/100,0.5,1.5))>npc_data["gold"]:
		%self_item_accept_btn.disable(true)
	else:
		%self_item_accept_btn.disable(false)
	


func _on_other_item_accept_btn_pressed() -> void:
	var item_data=npc_data["sold_item"][now_select_other_item_ind].duplicate(true)
	dec_item_from_npc(now_select_other_item_ind)
	if item_data.has("num"):
		item_data["num"]=1
	var price=item_data["price"]
	
	price=int(price*clamp((2-float(favor)/100),0.5,2)) #计算价格
	Global.change_currency_game(1,-price)
	npc_data["gold"]-=price
	Global.add_item_to_bag(item_data)
	
	fresh()
	pass # Replace with function body.


func _on_other_item_refuse_btn_pressed() -> void:
	%other_item_panel.hide()
	pass # Replace with function body.


func _on_self_item_refuse_btn_pressed() -> void:
	%self_item_panel.hide()
	pass # Replace with function body.
#向NPC背包中添加item
func add_item_to_npc(item_data:Dictionary):
	if item_data["allow_merge"]:
		for i in npc_data["sold_item"]:
			if i["id"]==item_data["id"]:
				if i.has("num"):
					i["num"]+=item_data["num"]
				else:
					i["num"]=2
				return
		npc_data["sold_item"].append(item_data)
	else:
		npc_data["sold_item"].append(item_data)

func dec_item_from_npc(ind:int):
	if npc_data["sold_item"][ind].has("num"):
		if npc_data["sold_item"][ind]["num"]<=1:
			npc_data["sold_item"].pop_at(ind)
		else:
			npc_data["sold_item"][ind]["num"]-=1
		pass
	else:
		npc_data["sold_item"].pop_at(ind)
	
	
	
	pass
func _on_self_item_accept_btn_pressed() -> void:
	var item_data=Global.get_all_item_game_data()[now_select_self_item_ind].duplicate(true)
	if item_data["allow_merge"]:
		item_data["num"]=1
	else:
		item_data.erase("num")
		
		
	var price=item_data["price"]
	price=int(price*clamp(0.5+float(favor)/100,0.5,1.5))
	
	Global.change_currency_game(1,price)
	npc_data["gold"]-=price
	Global.decrease_item_num_index(now_select_self_item_ind)
	add_item_to_npc(item_data)
	fresh()
	pass # Replace with function body.


func _on_back_pressed() -> void:
	%self_item_panel.hide()
	%other_item_panel.hide()
	self.hide()
	pass # Replace with function body.