import requests
from nullptr.models.system import System
from nullptr.models.waypoint import Waypoint
from nullptr.models.marketplace import Marketplace
from nullptr.models.jumpgate import Jumpgate
from .util import *
from time import sleep
class ApiError(Exception):
  def __init__(self, msg, code):
    super().__init__(msg)
    self.code = code
  
class ApiLimitError(Exception):
  pass
  
class Api:
  def __init__(self, store, agent):
    self.agent = agent
    self.store = store
    self.meta = None
    self.root = 'https://api.spacetraders.io/v2/'
    
  def token(self):
    if self.agent.token is None:
      raise ApiError('no token. Please register', 1337)
    return self.agent.token
  
  def request(self, method, path, data=None, need_token=True, params={}):
    try:
      return self.request_once(method, path, data, need_token, params)
    except ApiLimitError:
      print('oops, hit the limit. take a break')
      sleep(10)
      return self.request_once(method, path, data, need_token, params)
      
  def request_once(self, method, path, data=None, need_token=True, params={}):
    headers = {}
    if need_token:
      headers['Authorization'] = 'Bearer ' + self.token()
    if method == 'get':
      params['limit'] = 20
    r = requests.request(method, self.root+path, json=data, headers=headers, params=params)
    if r.status_code == 429:
      raise ApiLimitError()
    result = r.json()
    self.last_result = result
    if result is None:
      raise ApiError('http call failed', r.status_code)
    if 'meta' in result:
      self.last_meta = result['meta']
    if 'data' not in result:
      error_code = sg(result, 'error.code', -1)
      self.last_error = error_code
      error_message = sg(result, 'error.message')
      raise ApiError(error_message, error_code)
    else:
      self.last_error = 0
      return result['data']
    
  def register(self, faction):
    callsign = self.agent.symbol
    data = {
      'symbol': callsign,
      'faction': faction
    }
    result = self.request('post', 'register', data, need_token=False)
    token = mg(result, 'token')
    self.agent.token = token
  
  def info(self):
    data = self.request('get', 'my/agent')
    self.agent.update(data)
    return self.agent
  
  def list_systems(self, page=1):
    data = self.request('get', 'systems', params={'page': page})
    #pprint(self.last_meta)
    return self.store.update_list(System, data)
  
  def list_waypoints(self, system):
    data = self.request('get', f'systems/{system}/waypoints/')
    # pprint(data)
    return self.store.update_list(Waypoint, data)
  
  def marketplace(self, waypoint):
    system = waypoint.system()
    symbol = str(waypoint)
    data = self.request('get', f'systems/{system}/waypoints/{waypoint}/market')
    return self.store.update(Marketplace, symbol, data)
  
  def jumps(self, waypoint):
    data = self.request('get', f'systems/{waypoint.system()}/waypoints/{waypoint}/jump-gate')
    symbol = str(waypoint)
    return self.store.update(Jumpgate, symbol, data)