moviewyrm/bookwyrm/models/readthrough.py

""" progress in a book """
from django.db import models
from django.utils import timezone
from django.core import validators

from .base_model import BookWyrmModel


class ProgressMode(models.TextChoices):
    """ types of prgress available """

    PAGE = "PG", "page"
    PERCENT = "PCT", "percent"


class ReadThrough(BookWyrmModel):
    """ Store a read through a book in the database. """

    user = models.ForeignKey("User", on_delete=models.PROTECT)
    book = models.ForeignKey("Edition", on_delete=models.PROTECT)
    progress = models.IntegerField(
        validators=[validators.MinValueValidator(0)], null=True, blank=True
    )
    progress_mode = models.CharField(
        max_length=3, choices=ProgressMode.choices, default=ProgressMode.PAGE
    )
    start_date = models.DateTimeField(blank=True, null=True)
    finish_date = models.DateTimeField(blank=True, null=True)

    def save(self, *args, **kwargs):
        """ update user active time """
        self.user.last_active_date = timezone.now()
        self.user.save(broadcast=False)
        super().save(*args, **kwargs)

    def create_update(self):
        """ add update to the readthrough """
        if self.progress:
            return self.progressupdate_set.create(
                user=self.user, progress=self.progress, mode=self.progress_mode
            )
        return None


class ProgressUpdate(BookWyrmModel):
    """ Store progress through a book in the database. """

    user = models.ForeignKey("User", on_delete=models.PROTECT)
    readthrough = models.ForeignKey("ReadThrough", on_delete=models.CASCADE)
    progress = models.IntegerField(validators=[validators.MinValueValidator(0)])
    mode = models.CharField(
        max_length=3, choices=ProgressMode.choices, default=ProgressMode.PAGE
    )

    def save(self, *args, **kwargs):
        """ update user active time """
        self.user.last_active_date = timezone.now()
        self.user.save(broadcast=False)
        super().save(*args, **kwargs)