from nullptr.models.base import Base
from nullptr.models.waypoint import Waypoint
from nullptr.models.sector import Sector
from nullptr.models.system import System
from nullptr.models.agent import Agent
from nullptr.models.marketplace import Marketplace
from nullptr.models.system_member import SystemMember
from nullptr.models.jumpgate import Jumpgate
from nullptr.models.ship import Ship
from os.path import isfile, dirname, isdir
import os
from os.path import basename
import json
from .util import *
from time import time

class Store:
  def __init__(self, data_dir):
    self.init_models()
    self.data_dir = data_dir
    self.data = {m: {} for m in self.models}
    self.system_members = {}
    self.dirty_objects = set()
  
  def init_models(self):
    self.models = all_subclasses(Base)
    self.extensions = {c.ext(): c for c in self.models}
    self.model_names = {c.__name__: c for c in self.models}
    
  def dirty(self, obj):
    self.dirty_objects.add(obj)
    
  def path(self, obj):
    return os.path.join(self.data_dir, obj.path())
    
  def load_file(self, path):
    if not isfile(path):
      return None
    fn = basename(path)
    ext = fn.split('.')[-1]
    symbol = fn.split('.')[0]
    if ext not in self.extensions:
      return None
    with open(path) as f:
      data = json.load(f)
    
    typ = self.extensions[ext]
    obj = self.create(typ, symbol)
    data['store'] = self
    obj.__dict__ = data
    return obj
  
  def load(self):
    cnt = 0
    start_time = time()
    for fil in list_files(self.data_dir, True):
      self.load_file(fil)
      cnt += 1
    dur = time() - start_time
    print(f'loaded {cnt} objects in {dur:.2f} seconds')
  
  def store(self, obj):
    path = self.path(obj)
    path_dir = dirname(path)
    data = obj.dict()
    if not isdir(path_dir):
      os.makedirs(path_dir, exist_ok=True)
    with open(path, 'w') as f:
      json.dump(data, f, indent=2)
  
  def create(self, typ, symbol):
    obj = typ(symbol, self)
    self.data[typ][symbol] = obj
    if issubclass(typ, SystemMember):
      system_str = obj.system()
      
      if system_str not in self.system_members:
        self.system_members[system_str] = set()
      self.system_members[system_str].add(obj)
    return obj
    
  def get(self, typ, symbol, create=False):
    if type(typ) == str and typ in self.model_names:
      typ = self.model_names[typ]
    symbol = symbol.upper()
    if typ not in self.data:
      return None
    if symbol not in self.data[typ]:
      if create:
        return self.create(typ, symbol)
      else:
        return None
    return self.data[typ][symbol]
  
  def update(self, typ, symbol, data):
    obj = self.get(typ, symbol, True)
    obj.update(data)
    return obj
  
  def update_list(self, typ, lst):
    return [self.update(typ, mg(d, 'symbol'), d) for d in lst]
    
  def all(self, typ):
    if type(typ) == str and typ in self.model_names:
      typ = self.model_names[typ]
    
    for m in self.data[typ].values():
      yield m
  
  def all_members(self, system, typ=None):
    if type(typ) == str and typ in self.model_names:
      typ = self.model_names[typ]
    
    if type(system) == System:
      system = system.symbol
  
    if system not in self.system_members:
      return 
    for m in self.system_members[system]:
      if typ is None or type(m) == typ:
        yield m
      
  def flush(self):
    it = 0
    start_time = time()
    for obj in self.dirty_objects:
      it += 1
      self.store(obj)
    self.dirty_objects = set()
    dur = time() - start_time
    #  print(f'flush done {it} items {dur:.2f}')