from time import  sleep, time
from nullptr.util import *
from threading import Thread
from nullptr.models.atlas import Atlas
from functools import partial
from nullptr.models import System

class AtlasBuilder:
  def __init__(self, store, api):
    self.store = store
    self.api = api
    self.work = []
    self.max_work = 100
    self.unch_interval = 86400
    self.atlas = self.store.get(Atlas, 'ATLAS', create=True)   
  
  def find_work(self):
    first_page = self.atlas.total_pages == 0 
    pages_left = self.atlas.total_pages > self.atlas.seen_pages
    
    if first_page or pages_left:
      self.sched(self.get_systems)
      return
    for s in self.store.all(System):
      if len(self.work) > self.max_work:
        break
      if not s.uncharted: continue
      if s.last_crawl > time() - self.unch_interval: 
        continue
      self.sched(self.get_waypoints, s)
      
  
  def do_work(self):
    if len(self.work) == 0:
      self.find_work()
    if len(self.work) == 0:
      return
    work = self.work.pop()
    work()
  
  def get_systems(self):
    page = 1
    if self.atlas.seen_pages > 0:
      page = self.atlas.seen_pages + 1
      if page > self.atlas.total_pages:
        return
    # print('systems', page)
    data = self.api.list_systems(page)
    self.atlas.total_pages = total_pages(self.api.last_meta)
    self.atlas.seen_pages = page
  
  def get_waypoints(self, system):
    wps = self.api.list_waypoints(system)
    system.last_crawl = time()
    system.uncharted = len([1 for w in wps if w.uncharted]) > 0
    self.schedule_specials(wps)
 
  def sched(self, fun, *args):
    self.work.append(partial(fun, *args))
    
  def schedule_specials(self, waypoints):
    for w in waypoints:
      if 'UNCHARTED' in w.traits:
        continue
      if 'MARKETPLACE' in w.traits:
        #  print(f'marketplace at {w}')
        self.sched(self.api.marketplace, w)
      if w.type == 'JUMP_GATE':
        # print(f'jumpgate at {w}')
        self.sched(self.api.jumps, w)
      if 'SHIPYARD' in w.traits:
        # todo
        pass