You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
275 lines
10 KiB
275 lines
10 KiB
import os
|
|
from decimal import Decimal
|
|
import math
|
|
from django.db import models
|
|
from django.db.models import TextChoices
|
|
from django.utils.translation import gettext_lazy as _
|
|
|
|
from apps.account.models import ProfessorUser
|
|
from utils.schema import default_timing
|
|
from utils import generate_slug_for_model
|
|
from django.core.validators import MinValueValidator, MaxValueValidator
|
|
|
|
|
|
|
|
def course_file_upload_to(instance, filename):
|
|
return os.path.join(f"courses/{instance.slug}/videos/{filename}")
|
|
|
|
|
|
def attachment_file_upload_to(instance, filename):
|
|
return os.path.join(f"attachments/{filename}")
|
|
|
|
|
|
def course_attachment_file_upload_to(instance, filename):
|
|
return os.path.join(f"courses/{instance.course.slug}/attachments/{filename}")
|
|
|
|
|
|
|
|
|
|
class CourseCategory(models.Model):
|
|
name = models.CharField(max_length=255, verbose_name=_('Category Name'))
|
|
|
|
slug = models.SlugField(unique=True, max_length=255)
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
def save(self, *args, **kwargs):
|
|
if not self.slug:
|
|
self.slug = generate_slug_for_model(CourseCategory, self.name)
|
|
super().save(*args, **kwargs)
|
|
|
|
@property
|
|
def course_count(self):
|
|
return self.courses.exclude(status="inactive").count()
|
|
|
|
class Course(models.Model):
|
|
|
|
class LevelChoices(TextChoices):
|
|
BEGINNER = 'beginner', _('Beginner')
|
|
MID = 'mid', _('Mid Level')
|
|
ADVANCED = 'advanced', _('Advanced')
|
|
|
|
class StatusChoices(TextChoices):
|
|
INACTIVE = 'inactive', _('Inactive') # Not Active (does not show)
|
|
UPCOMING = 'upcoming', _('Upcoming') # Upcoming (visible but registration not allowed)-Предстоящие
|
|
REGISTERING = 'registering', _('Registering') # Registering (registration is open)-регистрация
|
|
ONGOING = 'ongoing', _('Ongoing') # Ongoing (course has started, registration closed)-В процессе
|
|
FINISHED = 'finished', _('Finished') # Finished (course has ended)-закончился
|
|
|
|
class VedioTypeChoices(models.TextChoices):
|
|
YOUTUBE_LINK = 'youtube_link', _('Youtube Link')
|
|
VIDEO_FILE = 'video_file', _('Video File')
|
|
|
|
|
|
|
|
title = models.CharField(max_length=255, verbose_name=_('Course Title'))
|
|
slug = models.SlugField(allow_unicode=True, unique=True)
|
|
category = models.ForeignKey(CourseCategory, on_delete=models.CASCADE, related_name='courses', verbose_name=_('Category'))
|
|
professor = models.ForeignKey(
|
|
ProfessorUser,
|
|
on_delete=models.CASCADE,
|
|
related_name="courses",
|
|
verbose_name=_("Professor")
|
|
)
|
|
|
|
thumbnail = models.ImageField(upload_to="courses/thumbnails/", verbose_name=_('Thumbnail'))
|
|
video_type = models.CharField(
|
|
max_length=20,
|
|
choices=VedioTypeChoices.choices,
|
|
verbose_name=_('Preview Video Type (YouTube Link or File Upload)')
|
|
)
|
|
video_file = models.FileField(
|
|
upload_to=course_file_upload_to,
|
|
null=True,
|
|
blank=True,
|
|
verbose_name=_("Video File")
|
|
)
|
|
video_link = models.CharField(max_length=500, null=True, blank=True, verbose_name=_("Video Link"))
|
|
|
|
is_online = models.BooleanField(default=False, verbose_name=_('Is Online Course'))
|
|
online_link = models.CharField(max_length=500, null=True, blank=True, verbose_name=_('Online Class Link'))
|
|
level = models.CharField(max_length=10, choices=LevelChoices.choices, verbose_name=_('Course Level'))
|
|
duration = models.PositiveIntegerField(verbose_name=_('Duration (in hours)'))
|
|
lessons_count = models.PositiveIntegerField(verbose_name=_('Number of Lessons'))
|
|
|
|
description = models.TextField(verbose_name=_('Course Description'))
|
|
short_description = models.CharField(max_length=500, blank=True, null=True, verbose_name=_("Short Description"))
|
|
status = models.CharField(max_length=15, choices=StatusChoices.choices, default=StatusChoices.INACTIVE, verbose_name=_('Course Status'))
|
|
is_free = models.BooleanField(default=True, verbose_name=_('Is Free'))
|
|
price = models.DecimalField(max_digits=10, decimal_places=2, default=0.00, verbose_name=_('Course Price'))
|
|
discount_percentage = models.PositiveIntegerField(default=0, validators=[MinValueValidator(0), MaxValueValidator(100)], verbose_name=_('Discount Percentage'))
|
|
final_price = models.DecimalField(
|
|
verbose_name=_('Course Final Price'), decimal_places=2, max_digits=10, default=0.00, blank=True,
|
|
help_text=_('This field is automatically calculated based on the discount percentage.')
|
|
)
|
|
|
|
is_group_chat_locked = models.BooleanField(
|
|
default=False,
|
|
verbose_name=_('Lock Group Chat')
|
|
)
|
|
is_professor_chat_locked = models.BooleanField(
|
|
default=False,
|
|
verbose_name=_('Lock Private Chats with Professor')
|
|
)
|
|
|
|
timing = models.JSONField(blank=True, null=True, default=default_timing, verbose_name=_("Timing"))
|
|
features = models.JSONField(verbose_name=_('Course features'), default=dict, blank=True, null=True)
|
|
created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created at"))
|
|
updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))
|
|
|
|
|
|
def __str__(self):
|
|
return self.title
|
|
|
|
def get_completed_lessons_count(self, student):
|
|
return self.lessons.filter(completions__student=student).count()
|
|
|
|
def is_student_participant(self, student):
|
|
return self.participants.filter(student=student).exists()
|
|
|
|
|
|
def save(self, *args, **kwargs):
|
|
if not self.slug:
|
|
self.slug = generate_slug_for_model(Course, self.title)
|
|
|
|
# Ensure consistency: if price is 0, set is_free to True and discount_percentage to 0
|
|
if self.price == 0:
|
|
self.is_free = True
|
|
self.discount_percentage = 0
|
|
self.final_price = Decimal('0.00')
|
|
elif self.is_free:
|
|
self.price = Decimal('0.00')
|
|
self.discount_percentage = 0
|
|
self.final_price = Decimal('0.00')
|
|
elif self.discount_percentage > 0:
|
|
discount_amount = (self.price * self.discount_percentage) / 100
|
|
final_price = self.price - discount_amount
|
|
self.final_price = Decimal(math.ceil(final_price)).quantize(Decimal('0.00'))
|
|
else:
|
|
self.final_price = Decimal(math.ceil(self.price)).quantize(Decimal('0.00'))
|
|
|
|
super().save(*args, **kwargs)
|
|
|
|
|
|
class Meta:
|
|
verbose_name = _("Course")
|
|
verbose_name_plural = _("Courses")
|
|
|
|
indexes = [
|
|
models.Index(fields=['status']),
|
|
models.Index(fields=['is_free']),
|
|
models.Index(fields=['created_at']),
|
|
models.Index(fields=['slug']),
|
|
models.Index(fields=['status', 'created_at']),
|
|
models.Index(fields=['category', 'status']),
|
|
models.Index(fields=['professor', 'status']),
|
|
]
|
|
|
|
|
|
class Glossary(models.Model):
|
|
"""
|
|
Base Glossary model that contains the actual content
|
|
"""
|
|
title = models.CharField(max_length=555, verbose_name=_('Glossary Title'))
|
|
description = models.TextField(verbose_name=_('Description'))
|
|
created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created at"))
|
|
updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))
|
|
|
|
def __str__(self):
|
|
return self.title
|
|
|
|
class Meta:
|
|
verbose_name = _("Glossary")
|
|
verbose_name_plural = _("Glossaries")
|
|
|
|
|
|
|
|
class CourseGlossary(models.Model):
|
|
"""
|
|
Intermediate model that connects Course with Glossary
|
|
"""
|
|
course = models.ForeignKey(Course, on_delete=models.CASCADE, related_name='glossaries', verbose_name=_('Course'))
|
|
glossary = models.ForeignKey(Glossary, on_delete=models.CASCADE, related_name='course_glossaries', verbose_name=_('Glossary'))
|
|
created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created at"))
|
|
updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))
|
|
|
|
def __str__(self):
|
|
return f"{self.course.title} - {self.glossary.title}"
|
|
|
|
@property
|
|
def title(self):
|
|
return self.glossary.title
|
|
|
|
@property
|
|
def description(self):
|
|
return self.glossary.description
|
|
|
|
class Meta:
|
|
ordering = ("-id",)
|
|
verbose_name = _("Course Glossary")
|
|
verbose_name_plural = _("Course Glossaries")
|
|
|
|
|
|
|
|
class Attachment(models.Model):
|
|
"""
|
|
Base Attachment model that contains the actual file
|
|
"""
|
|
title = models.CharField(max_length=255, verbose_name=_('Attachment Title'))
|
|
file = models.FileField(
|
|
upload_to=attachment_file_upload_to,
|
|
verbose_name=_('Attachment File')
|
|
)
|
|
file_size = models.PositiveIntegerField(verbose_name=_('File Size (in bytes)'), null=True, blank=True)
|
|
created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created at"))
|
|
updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))
|
|
|
|
def save(self, *args, **kwargs):
|
|
# Calculate the file size before saving
|
|
if self.file and not self.file_size:
|
|
self.file_size = self.file.size
|
|
super().save(*args, **kwargs)
|
|
|
|
def __str__(self):
|
|
return self.title
|
|
|
|
class Meta:
|
|
verbose_name = _("Attachment")
|
|
verbose_name_plural = _("Attachments")
|
|
|
|
|
|
|
|
class CourseAttachment(models.Model):
|
|
"""
|
|
Intermediate model that connects Course with Attachment
|
|
"""
|
|
course = models.ForeignKey(Course, on_delete=models.CASCADE, related_name='attachments', verbose_name=_('Course'))
|
|
attachment = models.ForeignKey(Attachment, on_delete=models.CASCADE, related_name='course_attachments', verbose_name=_('Attachment'))
|
|
created_at = models.DateTimeField(auto_now_add=True, verbose_name=_("Created at"))
|
|
updated_at = models.DateTimeField(auto_now=True, verbose_name=_("Updated At"))
|
|
|
|
def __str__(self):
|
|
return f"{self.course.title} - {self.attachment.title}"
|
|
|
|
@property
|
|
def title(self):
|
|
return self.attachment.title
|
|
|
|
@property
|
|
def file(self):
|
|
return self.attachment.file
|
|
|
|
@property
|
|
def file_size(self):
|
|
return self.attachment.file_size
|
|
|
|
class Meta:
|
|
ordering = ("-id",)
|
|
verbose_name = _("Course Attachment")
|
|
verbose_name_plural = _("Course Attachments")
|
|
|
|
indexes = [
|
|
models.Index(fields=['course']),
|
|
models.Index(fields=['attachment']),
|
|
]
|