moviewyrm/bookwyrm/models/import_job.py

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""" track progress of goodreads imports """
import re
import dateutil.parser
from django.apps import apps
from django.db import models
from django.utils import timezone
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from bookwyrm.connectors import connector_manager
from bookwyrm.models import ReadThrough, User, Book
from .fields import PrivacyLevels
# Mapping goodreads -> bookwyrm shelf titles.
GOODREADS_SHELVES = {
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"read": "read",
"currently-reading": "reading",
"to-read": "to-read",
}
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def unquote_string(text):
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"""resolve csv quote weirdness"""
match = re.match(r'="([^"]*)"', text)
if match:
return match.group(1)
return text
def construct_search_term(title, author):
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"""formulate a query for the data connector"""
# Strip brackets (usually series title from search term)
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title = re.sub(r"\s*\([^)]*\)\s*", "", title)
# Open library doesn't like including author initials in search term.
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author = re.sub(r"(\w\.)+\s*", "", author)
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return " ".join([title, author])
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class ImportJob(models.Model):
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"""entry for a specific request for book data import"""
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user = models.ForeignKey(User, on_delete=models.CASCADE)
created_date = models.DateTimeField(default=timezone.now)
task_id = models.CharField(max_length=100, null=True)
include_reviews = models.BooleanField(default=True)
complete = models.BooleanField(default=False)
privacy = models.CharField(
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max_length=255, default="public", choices=PrivacyLevels.choices
)
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retry = models.BooleanField(default=False)
def save(self, *args, **kwargs):
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"""save and notify"""
super().save(*args, **kwargs)
if self.complete:
notification_model = apps.get_model(
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"bookwyrm.Notification", require_ready=True
)
notification_model.objects.create(
user=self.user,
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notification_type="IMPORT",
related_import=self,
)
class ImportItem(models.Model):
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"""a single line of a csv being imported"""
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job = models.ForeignKey(ImportJob, on_delete=models.CASCADE, related_name="items")
index = models.IntegerField()
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data = models.JSONField()
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book = models.ForeignKey(Book, on_delete=models.SET_NULL, null=True, blank=True)
fail_reason = models.TextField(null=True)
def resolve(self):
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"""try various ways to lookup a book"""
if self.isbn:
self.book = self.get_book_from_isbn()
else:
# don't fall back on title/author search is isbn is present.
# you're too likely to mismatch
self.get_book_from_title_author()
def get_book_from_isbn(self):
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"""search by isbn"""
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search_result = connector_manager.first_search_result(
self.isbn, min_confidence=0.999
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)
if search_result:
# raises ConnectorException
return search_result.connector.get_or_create_book(search_result.key)
return None
def get_book_from_title_author(self):
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"""search by title and author"""
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search_term = construct_search_term(self.title, self.author)
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search_result = connector_manager.first_search_result(
search_term, min_confidence=0.999
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)
if search_result:
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# raises ConnectorException
return search_result.connector.get_or_create_book(search_result.key)
return None
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@property
def title(self):
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"""get the book title"""
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return self.data["Title"]
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@property
def author(self):
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"""get the book title"""
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return self.data["Author"]
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@property
def isbn(self):
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"""pulls out the isbn13 field from the csv line data"""
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return unquote_string(self.data["ISBN13"])
@property
def shelf(self):
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"""the goodreads shelf field"""
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if self.data["Exclusive Shelf"]:
return GOODREADS_SHELVES.get(self.data["Exclusive Shelf"])
return None
@property
def review(self):
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"""a user-written review, to be imported with the book data"""
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return self.data["My Review"]
@property
def rating(self):
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"""x/5 star rating for a book"""
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if self.data.get("My Rating", None):
return int(self.data["My Rating"])
return None
@property
def date_added(self):
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"""when the book was added to this dataset"""
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if self.data["Date Added"]:
return timezone.make_aware(dateutil.parser.parse(self.data["Date Added"]))
return None
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@property
def date_started(self):
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"""when the book was started"""
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if "Date Started" in self.data and self.data["Date Started"]:
return timezone.make_aware(dateutil.parser.parse(self.data["Date Started"]))
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return None
@property
def date_read(self):
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"""the date a book was completed"""
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if self.data["Date Read"]:
return timezone.make_aware(dateutil.parser.parse(self.data["Date Read"]))
return None
@property
def reads(self):
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"""formats a read through dataset for the book in this line"""
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start_date = self.date_started
# Goodreads special case (no 'date started' field)
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if (
(self.shelf == "reading" or (self.shelf == "read" and self.date_read))
and self.date_added
and not start_date
):
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start_date = self.date_added
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if start_date and start_date is not None and not self.date_read:
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return [ReadThrough(start_date=start_date)]
if self.date_read:
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return [
ReadThrough(
start_date=start_date,
finish_date=self.date_read,
)
]
return []
def __repr__(self):
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return "<{!r}Item {!r}>".format(self.data["import_source"], self.data["Title"])
def __str__(self):
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return "{} by {}".format(self.data["Title"], self.data["Author"])