from time import time
from nullptr.util import *
from .base import Base

class Contract(Base):
  identifier = 'id'
  type: str
  deliveries: list
  accepted: bool
  fulfilled: bool
  expires: int
  expires_str: str
  pay: int
  
  @classmethod
  def ext(cls):
    return 'cnt'
  
  def path(self):
    return f'contracts/{self.symbol}.{self.ext()}'
  
  def is_expired(self):
    return time() > self.expires
  
  def api_dict(self):
    return {
      'id': self.symbol.lower(),
      'expiration': self.expires_str,
    }
  
  def update(self, d):
    self.seta('expires',d, 'terms.deadline',parse_timestamp)
    self.seta('expires_str', d,'terms.deadline')
    self.seta('accepted', d, 'accepted')
    self.seta('fulfilled', d, 'fulfilled')
    self.seta('type', d, 'type')
    self.pay = mg(d, 'terms.payment.onAccepted') + mg(d, 'terms.payment.onFulfilled')
    deliveries = must_get(d, 'terms.deliver')
    self.deliveries = []
    for e in deliveries:
      delivery = {}
      delivery['trade_symbol'] = must_get(e, 'tradeSymbol')
      delivery['units_fulfilled'] = must_get(e, 'unitsFulfilled')
      delivery['units_required'] = must_get(e, 'unitsRequired')
      delivery['destination'] = must_get(e, 'destinationSymbol')
      self.deliveries.append(delivery)

  def f(self, detail=1):
    hours = int(max(0, self.expires - time()) / 3600)
    accepted = 'A' if self.accepted else '-'
    fulfilled = 'F' if self.fulfilled else '-'
    result = f'{self.symbol} {hours}h {accepted}{fulfilled}'
    if detail > 1:
      result += '\n'
      for d in self.deliveries:
        result += f"({d['units_fulfilled']} / {d['units_required']}) {d['trade_symbol']} to {d['destination']}"
    return result