contentmatcher/sr_session.py

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from random import choice
from datetime import date, timedelta
from flask import session, redirect, url_for, request, render_template
from sqlalchemy import desc
from share import share
from create_db import Card, Rating, get_session
"""
testing
"""
def autofill_ratings():
dbsession = get_session()
for i in range(100):
card = Rating(user_id="1", card_id="10", rating_value=choice(["Yes", "Maybe", "No"]), rating_time=date.today()-timedelta(choice([i for i in range(100)])))
dbsession.add(card)
dbsession.commit()
dbsession.close()
return None
"""
Main fuctions
"""
def calculate_interval(sorted_rates):
maybe_factor = 1.2
no_factor = 2.1
print(sorted_rates[0].rating_value)
if sorted_rates == []:
#this is a new card, but interval can't be zero cuz multiplication... may have to handeled differently
return 1
elif sorted_rates[0].rating_value == "Yes":
return 1
elif sorted_rates[0].rating_value == "Maybe":
sorted_rates.pop(0)
return calculate_interval(sorted_rates) * maybe_factor
elif sorted_rates[0].rating_value == "No":
sorted_rates.pop(0)
return calculate_interval(sorted_rates) * no_factor
elif sorted_rates[0].rating_value == "Delete":
return "Deleted"
def get_interval(card_id):
"""
takes card_id looks at the history of rates and gives the current interval
"""
dbsession = get_session()
sorted_rates_by_card = dbsession.query(Rating).filter(Rating.card_id == card_id).order_by(desc(Rating.rating_time)).all()
if sorted_rates_by_card == None:
print("ni kart... kaj zdaj") #@TODO
return None
else:
interval = calculate_interval(sorted_rates_by_card)
return round(interval)
#print(get_interval(card_id="10"))
def is_due(card_id):
dbsession = get_session()
interval = get_interval(card_id)
last_rating_date = dbsession.query(Rating).filter(Rating.card_id == card_id).order_by(desc(Rating.rating_time)).first()
due_date = last_rating_date.rating_time + timedelta(interval)
return date.today() >= due_date
def list_of_due_cardby_ids(user_id):
dbsession = get_session()
cards = dbsession.query(Card).filter(Card.owner_id == user_id).all()
l = []
for card in cards:
if is_due(card.id):
l.append(card.id)
return l
def list_of_new_cards(user_id):
dbsession = get_session()
cards = dbsession.query(Card).filter(Card.owner_id == user_id).all()
l = []
for card in cards:
rating = dbsession.query(Rating).filter(Rating.card_id == card.id).first()
if rating == None:
l.append(card.id)
return l
def next_card(user_id):
"""
find a due card in user's collection. A due card is last_review + interval <= current_date. There could be no new card.
"""
dbsession = get_session()
#verjetno ne bo tako easy
next_card = dbsession.query(Rating).filter().first()
return None
def sr_session():
dbsession = get_session()
#check if user in
if not 'user_id' in session:
redirect(url_for('login'))
user_id = session['user_id']
username = session['username']
#what is the next card, None means no next card, aka deck done...
show_card = next_card(user_id)
# Smo oddali obrazec?
if request.method == 'POST':
#get card_if from the card, rendered from the template, data actually from the template...
card_id = request.form.get('card_id', None)
if not card_id:
raise Exception("card_id je nujen!")
#this is the rendered card aka the card we are rating and submiting the data on
submit_card = dbsession.query(Card).get(card_id)
#@TODO check if this card is part of the user's deck to prevent possibile hack?
# Share
#Share button pressed? then reset the form - hence the if-else
share_request = request.form.get("share", None)
if share_request:
# @TODO logika za share!
share(submit_card, user_id)
# Rate
#If it's not a share it's a rate!
else:
rate = request.form.get('rate', None) #is this get somehow dangerous?
if not rate:
raise Exception("Need rate info!")
if rate == "Yes":
pass
elif rate == "Maybe":
pass
elif rate == "No":
pass
elif rate == "Delete":
#@TODO this should delete the file in some cases.
pass
# Any more cards?
#Display from
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return render_template("deck.html", username=username, card=show_card)