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utils.py
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utils.py
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import re
from aqt.utils import tooltip, getText, showWarning, askUser, showText
from collections import OrderedDict
from typing import List, Dict, Tuple
from anki.stats_pb2 import CardStatsResponse
from anki.cards import Card
from anki.stats import (
REVLOG_LRN,
REVLOG_REV,
REVLOG_RELRN,
REVLOG_CRAM,
REVLOG_RESCHED,
CARD_TYPE_REV,
QUEUE_TYPE_LRN,
QUEUE_TYPE_REV,
QUEUE_TYPE_DAY_LEARN_RELEARN,
)
from aqt import mw
import json
import math
import random
import time
from datetime import date, datetime, timedelta
from anki.utils import int_version
FSRS_ENABLE_WARNING = (
"Please either enable FSRS in your deck options, or disable the FSRS helper add-on."
)
def RepresentsInt(s):
try:
return int(s)
except ValueError:
return None
def reset_ivl_and_due(cid: int, revlogs: List[CardStatsResponse.StatsRevlogEntry]):
card = mw.col.get_card(cid)
card.ivl = int(revlogs[0].interval / 86400)
due = (
math.ceil(
(revlogs[0].time + revlogs[0].interval - mw.col.sched.day_cutoff) / 86400
)
+ mw.col.sched.today
)
if card.odid:
card.odue = max(due, 1)
else:
card.due = due
mw.col.update_card(card)
def filter_revlogs(
revlogs: List[CardStatsResponse.StatsRevlogEntry],
) -> List[CardStatsResponse.StatsRevlogEntry]:
return list(
filter(
lambda x: x.button_chosen >= 1
and (x.review_kind != REVLOG_CRAM or x.ease != 0),
revlogs,
)
)
def get_last_review_date(card: Card):
revlogs = mw.col.card_stats_data(card.id).revlog
try:
last_revlog = filter_revlogs(revlogs)[0]
last_review_date = (
math.ceil((last_revlog.time - mw.col.sched.day_cutoff) / 86400)
+ mw.col.sched.today
)
except IndexError:
due = card.odue if card.odid else card.due
last_review_date = due - card.ivl
return last_review_date
def update_card_due_ivl(card: Card, new_ivl: int):
card.ivl = new_ivl
last_review_date = get_last_review_date(card)
if card.odid:
card.odue = max(last_review_date + new_ivl, 1)
else:
card.due = last_review_date + new_ivl
return card
def has_again(revlogs: List[CardStatsResponse.StatsRevlogEntry]):
for r in revlogs:
if r.button_chosen == 1:
return True
return False
def has_manual_reset(revlogs: List[CardStatsResponse.StatsRevlogEntry]):
last_kind = None
for r in revlogs:
if r.button_chosen == 0:
return True
if (
last_kind is not None
and last_kind in (REVLOG_REV, REVLOG_RELRN)
and r.review_kind == REVLOG_LRN
):
return True
last_kind = r.review_kind
return False
FUZZ_RANGES = [
{
"start": 2.5,
"end": 7.0,
"factor": 0.15,
},
{
"start": 7.0,
"end": 20.0,
"factor": 0.1,
},
{
"start": 20.0,
"end": math.inf,
"factor": 0.05,
},
]
def get_fuzz_range(interval, elapsed_days, maximum_interval):
delta = 1.0
for range in FUZZ_RANGES:
delta += range["factor"] * max(
min(interval, range["end"]) - range["start"], 0.0
)
interval = min(interval, maximum_interval)
min_ivl = int(round(interval - delta))
max_ivl = int(round(interval + delta))
min_ivl = max(2, min_ivl)
max_ivl = min(max_ivl, maximum_interval)
if interval > elapsed_days:
min_ivl = max(min_ivl, elapsed_days + 1)
min_ivl = min(min_ivl, max_ivl)
return min_ivl, max_ivl
def due_to_date_str(due: int) -> str:
offset = due - mw.col.sched.today
today_date = sched_current_date()
return (today_date + timedelta(days=offset)).strftime("%Y-%m-%d")
def sched_current_date() -> date:
now = datetime.now()
next_day_start_at = mw.col.get_config("rollover")
return (now - timedelta(hours=next_day_start_at)).date()
if int_version() < 231200:
DECAY = -1
else:
DECAY = -0.5 # FSRS-4.5
FACTOR = 0.9 ** (1 / DECAY) - 1
def power_forgetting_curve(t, s):
return (1 + FACTOR * t / s) ** DECAY
def next_interval(s, r):
ivl = s / FACTOR * (r ** (1 / DECAY) - 1)
return max(1, int(round(ivl)))
def write_custom_data(card: Card, key, value):
if card.custom_data != "":
custom_data = json.loads(card.custom_data)
custom_data[key] = value
else:
custom_data = {key: value}
card.custom_data = json.dumps(custom_data)
def rotate_number_by_k(N, K):
num = str(N)
length = len(num)
K = K % length
rotated = num[K:] + num[:K]
return int(rotated)
def p_obey_easy_days(num_of_easy_days, easy_days_review_ratio):
return (7 - num_of_easy_days) / (
easy_days_review_ratio * num_of_easy_days + 7 - num_of_easy_days
)
def obey_specific_due_dates(num_of_specific_due_dates, easy_days_review_ratio):
return (8 + num_of_specific_due_dates) / (
easy_days_review_ratio * num_of_specific_due_dates
+ 8
+ num_of_specific_due_dates
)