from .base_agent import BaseAgent
from ..exchange import Exchange
from lightmatchingengine.lightmatchingengine import Order,Side
from abc import ABC
class Base_Aquire_Agent(BaseAgent,ABC):

    def __init__(self,simulation,business,resource,exchanges: list) -> None:
        """
        Agent for aquire of resources.
        business: Business to aquire resources for.
        resource: Resource to aquire.
        exchanges: list of exchanges to aquire resources from
        """
        self.business=business
        self.resource=resource
        self.exchanges=exchanges
        self.orders={i: {} for i in range(len(self.exchanges))}
        self.target=0
        self.trades=[]
        self.max_price=-1
        super().__init__(simulation)
    
    def set_target(self,target: int):
        """
        Sets the amount of resources the agent should aquire. 
        Checks against current inventory of business.
        """
        self.target=target

    def target_error(self):
        """
        Returns the difference between target and current business inventory.
        If err >0 the business is in surplus
        If err < 0 then agent needs to aquire resources 
        """
        err=self.business.inventory[self.resource]-self.target
        return err
    
    def set_price_max(self,price: int):
        """
        Sets the min price the agent should distribute the resources for.
        Set to -1 to disable minimum
        """
        self.max_price=price

    def order_resource(self,price_per, amount,cx_id):
        """
        Aquire resource from selected exchange.
        Return order if order has been placed else None.
        """
        # Get exchange
        cx=self.exchanges[cx_id]
        # Calculate order price
        total_price=price_per*amount

        if not self.business.balance>=total_price:
            return None # we dont have enough balance

        self.business.balance-=total_price
        cx.add_to_account(self.id,"balance",total_price) # prepaid charge account for cx
        order=cx.submit_order(self.id,self.resource,amount,price_per,Side.BUY)
        if order==None: # Order failed
            return False
        self.orders[cx_id][order.order_id]=order
        self.update_trades()
        return order
    
    def collect_balance_from_cxs(self):
        """
        Collects resouces from account inventory in cxs.
        """
        for cx in self.exchanges:
            amount=cx.get_account_resource_amount(self.id,"balance")
            cx.remove_from_account(self.id,"balance",amount)
            self.business.balance+=amount
    
    def collect_resource_from_cxs(self,resource):
        """
        Collects resouces from account inventory in cxs.
        """
        for cx in self.exchanges:
            amount=cx.get_account_resource_amount(self.id,resource)
            cx.remove_from_account(self.id,resource,amount)
            self.business.inventory[resource]+=amount
    
    def update_trades(self) -> list:
        """
        Returns a list of all trades performed by this agent
        """
        trades=[]
        for cx_id in range(len(self.exchanges)):
            cx=self.exchanges[cx_id]
            orders=self.orders[cx_id]
            if len(orders)>0:
                for k,o in orders.items():
                    if k in cx.order_trades_map:
                        trades.append(cx.order_trades_map[k])
        self.trades=trades
        return trades