moviewyrm/bookwyrm/views/reading.py

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""" the good stuff! the books! """
from datetime import datetime
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import dateutil.parser
import dateutil.tz
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from dateutil.parser import ParserError
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseBadRequest, HttpResponseNotFound
from django.shortcuts import get_object_or_404, redirect
from django.views.decorators.http import require_POST
from bookwyrm import models
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from .helpers import get_edition, handle_reading_status
from .shelf import handle_unshelve
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# pylint: disable= no-self-use
@login_required
@require_POST
def start_reading(request, book_id):
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""" begin reading a book """
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book = get_edition(book_id)
reading_shelf = models.Shelf.objects.filter(
identifier=models.Shelf.READING, user=request.user
).first()
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# create a readthrough
readthrough = update_readthrough(request, book=book)
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if readthrough:
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readthrough.save()
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# create a progress update if we have a page
readthrough.create_update()
current_status_shelfbook = (
models.ShelfBook.objects.select_related("shelf")
.filter(
shelf__identifier__in=models.Shelf.READ_STATUS_IDENTIFIERS,
user=request.user,
book=book,
)
.first()
)
if current_status_shelfbook is not None:
if current_status_shelfbook.shelf.identifier != models.Shelf.READING:
handle_unshelve(book, current_status_shelfbook.shelf)
else: # It already was on the shelf
return redirect(request.headers.get("Referer", "/"))
models.ShelfBook.objects.create(book=book, shelf=reading_shelf, user=request.user)
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# post about it (if you want)
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if request.POST.get("post-status"):
privacy = request.POST.get("privacy")
handle_reading_status(request.user, reading_shelf, book, privacy)
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return redirect(request.headers.get("Referer", "/"))
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@login_required
@require_POST
def finish_reading(request, book_id):
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""" a user completed a book, yay """
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book = get_edition(book_id)
finished_read_shelf = models.Shelf.objects.filter(
identifier=models.Shelf.READ_FINISHED, user=request.user
).first()
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# update or create a readthrough
readthrough = update_readthrough(request, book=book)
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if readthrough:
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readthrough.save()
current_status_shelfbook = (
models.ShelfBook.objects.select_related("shelf")
.filter(
shelf__identifier__in=models.Shelf.READ_STATUS_IDENTIFIERS,
user=request.user,
book=book,
)
.first()
)
if current_status_shelfbook is not None:
if current_status_shelfbook.shelf.identifier != models.Shelf.READ_FINISHED:
handle_unshelve(book, current_status_shelfbook.shelf)
else: # It already was on the shelf
return redirect(request.headers.get("Referer", "/"))
models.ShelfBook.objects.create(
book=book, shelf=finished_read_shelf, user=request.user
)
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# post about it (if you want)
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if request.POST.get("post-status"):
privacy = request.POST.get("privacy")
handle_reading_status(request.user, finished_read_shelf, book, privacy)
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return redirect(request.headers.get("Referer", "/"))
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@login_required
@require_POST
def edit_readthrough(request):
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""" can't use the form because the dates are too finnicky """
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readthrough = update_readthrough(request, create=False)
if not readthrough:
return HttpResponseNotFound()
# don't let people edit other people's data
if request.user != readthrough.user:
return HttpResponseBadRequest()
readthrough.save()
# record the progress update individually
# use default now for date field
readthrough.create_update()
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return redirect(request.headers.get("Referer", "/"))
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@login_required
@require_POST
def delete_readthrough(request):
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""" remove a readthrough """
readthrough = get_object_or_404(models.ReadThrough, id=request.POST.get("id"))
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# don't let people edit other people's data
if request.user != readthrough.user:
return HttpResponseBadRequest()
readthrough.delete()
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return redirect(request.headers.get("Referer", "/"))
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@login_required
@require_POST
def create_readthrough(request):
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""" can't use the form because the dates are too finnicky """
book = get_object_or_404(models.Edition, id=request.POST.get("book"))
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readthrough = update_readthrough(request, create=True, book=book)
if not readthrough:
return redirect(book.local_path)
readthrough.save()
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return redirect(request.headers.get("Referer", "/"))
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def load_date_in_user_tz_as_utc(date_str: str, user: models.User) -> datetime:
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""" ensures that data is stored consistently in the UTC timezone """
user_tz = dateutil.tz.gettz(user.preferred_timezone)
start_date = dateutil.parser.parse(date_str, ignoretz=True)
return start_date.replace(tzinfo=user_tz).astimezone(dateutil.tz.UTC)
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def update_readthrough(request, book=None, create=True):
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""" updates but does not save dates on a readthrough """
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try:
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read_id = request.POST.get("id")
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if not read_id:
raise models.ReadThrough.DoesNotExist
readthrough = models.ReadThrough.objects.get(id=read_id)
except models.ReadThrough.DoesNotExist:
if not create or not book:
return None
readthrough = models.ReadThrough(
user=request.user,
book=book,
)
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start_date = request.POST.get("start_date")
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if start_date:
try:
readthrough.start_date = load_date_in_user_tz_as_utc(
start_date, request.user
)
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except ParserError:
pass
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finish_date = request.POST.get("finish_date")
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if finish_date:
try:
readthrough.finish_date = load_date_in_user_tz_as_utc(
finish_date, request.user
)
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except ParserError:
pass
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progress = request.POST.get("progress")
if progress:
try:
progress = int(progress)
readthrough.progress = progress
except ValueError:
pass
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progress_mode = request.POST.get("progress_mode")
if progress_mode:
try:
progress_mode = models.ProgressMode(progress_mode)
readthrough.progress_mode = progress_mode
except ValueError:
pass
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if not readthrough.start_date and not readthrough.finish_date:
return None
return readthrough
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@login_required
@require_POST
def delete_progressupdate(request):
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""" remove a progress update """
update = get_object_or_404(models.ProgressUpdate, id=request.POST.get("id"))
# don't let people edit other people's data
if request.user != update.user:
return HttpResponseBadRequest()
update.delete()
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return redirect(request.headers.get("Referer", "/"))