import datetime
from peewee import JOIN, fn

from .models import database, User, OrdersPool, DomSubUsers, Repeat, SkipDay, OrderStatus, MastodonServer

def initdb():
  database.connect()
  database.create_tables([
    Repeat,
    SkipDay,
    OrderStatus
  ])

def user_add(username, chat_id):
  return User.create(
    telegram_username=username,
    telegram_chat_id=chat_id
  )

def user_get(username):
  return User.get(
    telegram_username=username
  )

def user_mastodon_server_set(id, mastodon_server):
  q = User.update(
    mastodon_server=mastodon_server
  ).where(
    User.id == id
  )
  return q.execute()

def user_mastodon_user_set(id, mastodon_username, mastodon_access_token):
  q = User.update(
    mastodon_username=mastodon_username,
    mastodon_access_token=mastodon_access_token
  ).where(
    User.id == id
  )
  return q.execute()

def user_preferences_set(id, mastodon_post_public, mastodon_attn_list):
  q = User.update(
    mastodon_attn_list=mastodon_attn_list,
    mastodon_post_public=mastodon_post_public
  ).where(
    User.id == id
  )
  return q.execute()

def mastodon_server_get(name):
  return MastodonServer.get(name=name)

def mastodon_server_put(name, client_id, client_secret):
  return MastodonServer.create(
    name=name,
    client_id=client_id,
    client_secret=client_secret
  )

def orders_pool_list(user_id):
  return OrdersPool.select().where(OrdersPool.user_id == user_id)

def orders_pool(user_id, set_id):
  return OrdersPool.get(OrdersPool.user_id == user_id, OrdersPool.id == set_id)

def orders_pool_by_id(pool_id):
  return OrdersPool.get(OrdersPool.id == pool_id)

def orders_pool_since(dt):
  return OrdersPool.select().where(OrdersPool.updated_at > dt)

def orders_pool_scheduled():
  return OrdersPool.select().where(OrdersPool.scheduled == True)

def domsubusers_add(sub, dom):
  return DomSubUsers.create(
    sub=sub,
    dom=dom
  )
def domsubusers_delete(sub, dom):
  q = DomSubUsers.get(
    sub=sub,
    dom=dom
  ).delete()
  return q.execute()

def domsubusers_list(dom):
  return DomSubUsers.select().where(DomSubUsers.dom == dom)

def repeat_get(orders_pool_id):
  try:
    return Repeat.get(orders_pool_id = orders_pool_id)
  except Repeat.DoesNotExist:
    return None

def repeat_increment(id):
  r = Repeat.get(id=id)
  q = Repeat.update(
    count = r.count + 1
  )
  q.execute()

def repeat_put(orders_pool_id, probability, orders):
  return Repeat.create(
    orders_pool_id=orders_pool_id,
    probability=probability,
    orders=orders
  )

def repeat_clear(id):
  q = Repeat.delete()
  q.execute()

def skip_day_put(user, date):
  return SkipDay.create(user=user, date=date)

def skip_day_delete(user, date):
  q = SkipDay.delete().where(SkipDay.user == user & SkipDay.date == date)
  return q.execute()

def skip_days_upcoming(user):
  return (SkipDay.select()
    .where(SkipDay.user == user and SkipDay.date >= datetime.date.today())
    .order_by(SkipDay.date)
    .limit(10))

def skip_day_contains(user, date):
  q = SkipDay.select().where(SkipDay.user == user & SkipDay.date == date)
  return len(q) > 0

def order_status_put(orders_pool, user, mastodon_id, created_at, due_at, text, punishment_for=None):
  return OrderStatus.create(
    orders_pool_id=orders_pool.id,
    user_id=user.id,
    mastodon_id=mastodon_id,
    created_at=created_at,
    due_at=due_at,
    text=text,
    punishment_for=punishment_for
  )

def order_status_by_id(order_status_id):
  return OrderStatus.get(id=order_status_id)

def order_status_confirm(id, confirmed_at):
  q = OrderStatus.update(
    confirmed_at=confirmed_at
  ).where(
    OrderStatus.id == id
  )
  return q.execute()

def order_status_outstanding():
  Punishment = OrderStatus.alias()
  return (OrderStatus
    .select(OrderStatus)
    .where(OrderStatus.due_at.is_null(False) & OrderStatus.confirmed_at.is_null())
    .join(Punishment, JOIN.LEFT_OUTER, on=(OrderStatus.id == Punishment.punishment_for))
    .group_by(OrderStatus)
    .having(fn.COUNT(Punishment.id) == 0)
  )