from nullptr.store import Store
from nullptr.models.base import Base
from nullptr.models.waypoint import Waypoint
from nullptr.models.contract import Contract
from nullptr.models.system import System
from nullptr.models.survey import Survey
from nullptr.models.ship import Ship
from nullptr.analyzer import Analyzer
from time import time
from functools import partial
import logging
from nullptr.util import *

class MissionError(Exception):
  pass
  
class MissionParam:
  def __init__(self, cls, required=True, default=None):
    self.cls = cls
    self.required = required
    self.default = default
  
  def parse(self, val, store):
    if self.cls == str:
      return str(val)
    elif self.cls == int:
      return int(val)
    elif self.cls == list:
      if type(val) == str:
        return [i.strip() for i in val.split(',')]
      return val
    elif issubclass(self.cls, Base):
      if type(val) == str:
        data = store.get(self.cls, val)
      else:
        data = val
      if data is None:
        raise ValueError('object not found')
      return data.symbol
    else:
      raise ValueError('unknown param typr')
    
class Mission:
  @classmethod
  def params(cls):
    return {
      
    }
  
  def __init__(self, ship, store, api):
    self.ship = ship
    self.store = store
    self.api = api
    self.next_step = 0
    self.analyzer = Analyzer(self.store)

  def sts(self, nm, v):
    if issubclass(type(v), Base):
      v = v.symbol
    self.ship.set_mission_state(nm, v)
  
  def rst(self, typ, nm):
    symbol = self.st(nm)
    if symbol is None:
      return None
    return self.store.get(typ, symbol)
    
  def st(self, nm):
    if not nm in self.ship.mission_state:
      return None
    return self.ship.mission_state[nm]
  
  def status(self, nw=None):
    if nw is None:
      return self.ship.mission_status
    else:
      self.ship.mission_status = nw
      
  def start_state(self):
    return 'done'
  
  def error(self, msg):
    self.status('error')
    print(msg)

  def init_state(self):
    for name, param in self.params().items():
      if param.required and param.default is None:
        if not name in self.ship.mission_state:
          return self.error(f'Param {name} not set')
    self.status(self.start_state())
  
  def steps(self):
    return {
      
    }
  
  def step_done(self):
    self.ship.log(f'mission finished', 3)
    
  def is_waiting(self):
    return self.next_step > time() or self.ship.cooldown > time() or self.ship.arrival > time()
  
  def is_finished(self):
    return self.status() in ['done','error']
  
  def is_ready(self):
    return not self.is_waiting() and not self.is_finished()
  
  def step(self):
    steps = self.steps()
    if self.status() == 'init':
      self.init_state()
    status = self.status()
    if not status in steps:
      self.ship.log(f"Invalid mission status {status}", 1)
      self.status('error')
      return
    handler, next_step = steps[status]
    try:
      result = handler()
    except Exception as e:
      logging.error(e, exc_info=True)
      self.status('error')
      return
    if type(next_step) == str:
      self.status(next_step)
    elif type(next_step) == dict:
      if result not in next_step:
        self.ship.log(f'Invalid step result {result}', 1)
        self.status('error')
        return
      else:
        if result is None: result=''
        self.status(next_step[result])
    self.ship.log(f'{status} {result} -> {self.status()}', 8)

class BaseMission(Mission):
  def step_go_dest(self):
    destination = self.rst(Waypoint, 'destination')
    if self.ship.location() == destination:
      return
    self.api.navigate(self.ship, destination)
    self.next_step = self.ship.arrival
  
  def step_go_site(self):
    site = self.rst(Waypoint,'site')
    if self.ship.location() == site:
      return
    self.api.navigate(self.ship, site)
    self.next_step = self.ship.arrival
    
  def step_market(self):
    loc = self.ship.location
    self.api.marketplace(loc)
    
  def step_unload(self):
    delivery = self.st('delivery')
    if delivery == 'sell':
      return self.step_sell(False)
    contract = self.rst(Contract, 'contract') 
    typs = self.ship.deliverable_cargo(contract)
    if len(typs) == 0:
      return 'done'
    self.api.deliver(self.ship, typs[0], contract)
    if len(typs) == 1:
      return 'done'
    else:
      return 'more'

  def step_sell(self, except_resource=True):
    market = self.store.get('Marketplace', self.ship.location.symbol)
    sellables = market.sellable_items(self.ship.cargo.keys())
    if len(sellables) == 0:
      return 'done'
    resource = sellables[0]
    volume = market.volume(resource)
    
    amt_cargo = self.ship.get_cargo(resource)
  
    amount = min(amt_cargo, volume)
    self.api.sell(self.ship, resource, amount)
    
    if len(sellables) == 1 and amt_cargo == amount:
      return 'done'
    else:
      return 'more'
  
  def step_travel(self):
    traject = self.st('traject')
    if traject is None or traject == []:
      return
    dest = traject[-1]
    loc = self.ship.location
    
    hop = traject.pop(0)
    if type(hop) == Waypoint:
      self.api.navigate(self.ship, hop)
      self.next_step = self.ship.arrival
    else:
      self.api.jump(self.ship, hop)
      self.next_step = self.ship.cooldown
    self.sts('traject', traject)
    
  def step_navigate_traject(self):
    traject = self.st('traject')
    
    
    loc = self.ship.location
    
    if traject is None or traject == []:
      return 'done'
    dest =traject[-1]
    if dest == loc:
      return 'done'
    return 'more'
    
  def step_calculate_traject(self, dest):
    if type(dest) == str:
      dest = self.store.get(Waypoint, dest)
    loc = self.ship.location
    loc_sys = loc.system
    
    loc_jg = self.analyzer.get_jumpgate(loc_sys)
    loc_jg_wp = self.store.get(Waypoint, loc_jg.symbol)
    dest_sys = dest.system
    dest_jg = self.analyzer.get_jumpgate(dest_sys)
    if dest_sys == loc_sys:
      result = self.analyzer.find_nav_path(loc, dest, self.ship.range())
      self.sts('traject', result)
      return
    path = self.analyzer.find_path(loc_sys, dest_sys)
    result = []
    if loc.symbol != loc_jg.symbol:
      result.append(loc_jg_wp)
    result += [s for s in path[1:]]
    if dest_jg.symbol != dest.symbol:
      result.append(dest)
    self.sts('traject', result)
    print(result)
    return result
    
  def step_dock(self):
    if self.ship.status == 'DOCKED':
      return
    self.api.dock(self.ship)
 
  def step_refuel(self):
    if self.ship.fuel_capacity == 0:
      return
    #if  self.ship.fuel_capacity - self.ship.fuel_current > 100:
    try:
      self.api.refuel(self.ship)
    except Exception as e:
      pass
       
  def step_orbit(self):
    if self.ship.status != 'DOCKED':
      return
    self.api.orbit(self.ship)
  
  def travel_steps(self, nm, destination, next_step):
    destination = self.st(destination)
    calc = partial(self.step_calculate_traject, destination)
    steps = {
      
      f'travel-{nm}': (calc, f'dock-{nm}'),
      f'dock-{nm}': (self.step_dock, f'refuel-{nm}'),
      f'refuel-{nm}': (self.step_refuel, f'orbit-{nm}'),
      f'orbit-{nm}': (self.step_orbit, f'go-{nm}'),
      f'go-{nm}': (self.step_travel, f'nav-{nm}'),
      f'nav-{nm}': (self.step_navigate_traject, {
        'done': next_step,
        'more': f'dock-{nm}'
        })
    }
    if self.ship.fuel_capacity == 0:
      steps = {
      
      f'travel-{nm}': (calc, f'go-{nm}'),
      f'go-{nm}': (self.step_travel, f'nav-{nm}'),
      f'nav-{nm}': (self.step_navigate_traject, {
        'done': next_step,
        'more': f'go-{nm}'
        }),
    }
    return steps