contentmatcher/sr_session.py

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from random import choice
from datetime import date, timedelta
from flask import flash, session, redirect, url_for, request, render_template
from sqlalchemy import desc
from share import share
from create_db import Card, Rating, get_session
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from settings import get_settings
"""
testing
"""
def autofill_ratings():
dbsession = get_session()
for i in range(100):
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card = Rating(user_id="1", card_id=choice([10, 13, 14, 75]), rating_value=choice(["Maybe", "No"]), rating_time=date.today()-timedelta(choice([i for i in range(100)])))
dbsession.add(card)
dbsession.commit()
dbsession.close()
return None
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"""
Config
"""
maybe_factor = 1.2
no_factor = 2.1
"""
Main fuctions
"""
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def calculate_interval(sorted_rates, maybe_factor, no_factor):
if sorted_rates == []:
return 1
elif sorted_rates[0].rating_value == "Yes":
return 1
elif sorted_rates[0].rating_value == "Maybe":
sorted_rates.pop(0)
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return calculate_interval(sorted_rates, maybe_factor, no_factor) * maybe_factor
elif sorted_rates[0].rating_value == "No":
sorted_rates.pop(0)
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return calculate_interval(sorted_rates, maybe_factor, no_factor) * no_factor
elif sorted_rates[0].rating_value == "Delete":
return -1 #"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()
dbsession.close()
if sorted_rates_by_card == None:
print("ni kart... kaj zdaj") #@TODO
return None
else:
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interval = calculate_interval(sorted_rates_by_card, maybe_factor, no_factor)
return round(interval)
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#to vključuje tudi new...
def is_due(card_id):
dbsession = get_session()
interval = get_interval(card_id)
if interval < 0:
return False
last_rating_date = dbsession.query(Rating).filter(Rating.card_id == card_id).order_by(desc(Rating.rating_time)).first()
if last_rating_date == None:
dbsession.close()
return True
due_date = last_rating_date.rating_time + timedelta(interval)
dbsession.close()
return date.today() >= due_date
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def list_of_due_cards_by_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)
dbsession.close()
return l
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def list_of_new_cards_by_ids(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)
dbsession.close()
return l
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def rated_today_by_staus (card_status, user_id):
"""
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Returns number of cards rated today by user by status (new or due)
"""
dbsession = get_session()
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today = date.today()
ratings_today = dbsession.query(Rating).filter(
Rating.rating_time == today,
Rating.user_id == user_id
)
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n = 0
d = 0
for rating in ratings_today:
count_all_rates_of_card = dbsession.query(Card).filter(Card.id == rating.card_id).count()
if count_all_rates_of_card == 1:
n+=1
elif count_all_rates_of_card > 1:
d+=1
else:
print("wtf")
raise Exception("Count be wrong! There should be at least one rating")
dbsession.close()
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if card_status == "new":
return n
elif card_status == "due":
return d
else:
raise Exception("must input either 'new' or 'due' as parameter")
def get_a_card_by_status(user_id, card_status):
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if card_status == "new":
l = list_of_new_cards_by_ids(user_id)
card_id = l[0]
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if card_status == "due":
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l = list_of_due_cards_by_ids(user_id)
card_id = l[0]
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return card_id
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"""
Export functions
"""
def remaining_items(max_items, total_queue, rated_today):
"""
gives number of remaining items. Either upto max or if total runs out earlier.
"""
n_of_remaining = min((max_items-rated_today), total_queue)
return n_of_remaining
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def schedule_status(user_id):
"""
Returns information needed for start/continue/done menu ui
"""
user_settings = get_settings(user_id)
max_new = int(user_settings["max_new"])
max_due = int(user_settings["max_due"])
rated_new = rated_today_by_staus("new", user_id)
rated_due = rated_today_by_staus("due", user_id)
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total_new = len(list_of_new_cards_by_ids(user_id))
total_due = len(list_of_due_cards_by_ids(user_id)) - total_new
remaining_new_today = remaining_items(max_new, total_new, rated_new)
remaining_due_today = remaining_items(max_due, total_due, rated_due)
remaining_total_today = remaining_due_today + remaining_new_today
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if remaining_total_today == 0:
return "done"
elif rated_due+rated_new == 0:
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return "start"
else:
return "continue"
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def remaining_by_status(user_id, status):
if status == "new":
l = len(list_of_new_cards_by_ids(user_id))
elif status == "due":
l = len(list_of_due_cards_by_ids(user_id))
return l
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"""
Engine
"""
def sr_session():
dbsession = get_session()
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#check if user in session
if not 'user_id' in session:
redirect(url_for('login'))
user_id = session['user_id']
username = session['username']
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#form sent?
if request.method == 'POST':
#get card_id from the card, rendered from the template, data actually from the template... why tho
card_id = request.form.get('card_id', None)
if not card_id:
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raise Exception("card_id necesarry!")
#@TODO check if this card is part of the user's deck to prevent possibile hack?
submit_card = dbsession.query(Card).get(card_id)
# Share
#@@TODO, this should not change the card
share_request = request.form.get("share", None)
if share_request:
share(submit_card, user_id)
#Rate
else:
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rate = request.form.get('rate', None)
if not rate:
raise Exception("Need rate info!")
r = Rating(user_id=user_id, card_id=submit_card.id, rating_value=rate, rating_time=date.today())
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dbsession.add(r)
dbsession.commit()
dbsession.close()
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user_settings = get_settings(user_id)
max_new = int(user_settings["max_new"])
max_due = int(user_settings["max_due"])
total_new = len(list_of_new_cards_by_ids(user_id))
total_due = len(list_of_due_cards_by_ids(user_id)) - total_new
rated_today_new = rated_today_by_staus("new", user_id)
rated_today_due = rated_today_by_staus("due", user_id)
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remaining_new_today = remaining_items(max_new, total_new, rated_today_new)
remaining_due_today = remaining_items(max_due, total_due, rated_today_due)
print("remaining_new_today: ", remaining_new_today)
print("remaining_due_today: ", remaining_due_today)
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#checks if there are any new/due cards left for today and gets the next one.
#max can be more than all scheduled, min decides which is the limt.
if remaining_new_today > 0:
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new_card_id=get_a_card_by_status(user_id, "new")
elif remaining_due_today > 0:
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new_card_id=get_a_card_by_status(user_id, "due")
else:
dbsession.close()
flash("no more cards today")
return redirect("/menu")
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show_card = dbsession.query(Card).get(new_card_id)
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interval = get_interval(new_card_id)
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#these factors should be better packaged
return render_template("deck.html", username=username, card=show_card, maybe_in=round(interval*maybe_factor), no_in=round(no_factor*interval))