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Backend Assignment submission by vinod parepalli #62

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e3700ea
added topics ,summary to conversatio and auto summary option
Jul 3, 2025
879f0eb
final upload of assignment
Jul 6, 2025
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15 changes: 10 additions & 5 deletions backend/authentication/admin.py
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Original file line number Diff line number Diff line change
@@ -1,27 +1,34 @@
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin

from authentication.models import CustomUser


class CustomUserAdmin(UserAdmin):
model = CustomUser
list_display = (
"email",
"role",
"is_staff",
"is_active",
)
list_filter = (
"email",
"role",
"is_staff",
"is_active",
)
fieldsets = (
(None, {"fields": ("email", "password")}),
("Permissions", {"fields": ("is_staff", "is_active")}),
("Permissions", {"fields": ("role", "is_staff", "is_active")}),
)
add_fieldsets = (
(None, {"classes": ("wide",), "fields": ("email", "password1", "password2", "is_staff", "is_active")}),
(
None,
{
"classes": ("wide",),
"fields": ("email", "password1", "password2", "role", "is_staff", "is_active"),
},
),
)
search_fields = ("email",)
ordering = ("email",)
Expand All @@ -30,12 +37,10 @@ class CustomUserAdmin(UserAdmin):

def make_active(self, request, queryset):
queryset.update(is_active=True)

make_active.short_description = "Mark selected users as active"

def make_inactive(self, request, queryset):
queryset.update(is_active=False)

make_inactive.short_description = "Mark selected users as inactive"


Expand Down
23 changes: 23 additions & 0 deletions backend/authentication/migrations/0002_customuser_role_alter_customuser_is_active.py
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@@ -0,0 +1,23 @@
# Generated by Django 5.2.4 on 2025-07-05 10:06

from django.db import migrations, models


class Migration(migrations.Migration):

dependencies = [
('authentication', '0001_initial'),
]

operations = [
migrations.AddField(
model_name='customuser',
name='role',
field=models.CharField(choices=[('admin', 'Admin'), ('staff', 'Staff'), ('uploader', 'Uploader'), ('viewer', 'Viewer')], default='viewer', max_length=20),
),
migrations.AlterField(
model_name='customuser',
name='is_active',
field=models.BooleanField(default=True),
),
]
29 changes: 17 additions & 12 deletions backend/authentication/models.py
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Expand Up @@ -3,37 +3,42 @@


class CustomUserManager(BaseUserManager):
def create_user(self, email, password, **extra_fields):
def create_user(self, email, password=None, **extra_fields):
if not email:
raise ValueError("The Email field must be set")
if not password:
raise ValueError("The Password field must be set")

local, domain = email.split("@")
if "+" in local:
local = local.split("+")[0]
email = f"{local}@{domain.lower()}"

email = self.normalize_email(email)
extra_fields.setdefault("is_active", True)
user = self.model(email=email, **extra_fields)
user.set_password(password)
user.save(using=self._db)

return user

def create_superuser(self, email, password, **extra_fields):
def create_superuser(self, email, password=None, **extra_fields):
extra_fields.setdefault("is_staff", True)
extra_fields.setdefault("is_active", True)
extra_fields.setdefault("is_superuser", True)

if extra_fields.get("is_staff") is not True:
raise ValueError("Superuser must have is_staff=True.")
if extra_fields.get("is_superuser") is not True:
raise ValueError("Superuser must have is_superuser=True.")

return self.create_user(email, password, **extra_fields)


class CustomUser(AbstractBaseUser, PermissionsMixin):
email = models.EmailField(unique=True)
is_active = models.BooleanField(default=False)
is_active = models.BooleanField(default=True)
is_staff = models.BooleanField(default=False)

ROLE_CHOICES = (
("admin", "Admin"),
("staff", "Staff"),
("uploader", "Uploader"),
("viewer", "Viewer"),
)
role = models.CharField(max_length=20, choices=ROLE_CHOICES, default="viewer")

objects = CustomUserManager()

USERNAME_FIELD = "email"
Expand Down
66 changes: 62 additions & 4 deletions backend/backend/settings.py
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Expand Up @@ -17,9 +17,16 @@

load_dotenv()

GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


MEDIA_ROOT = BASE_DIR / "media"
MEDIA_URL = "/media/"


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/4.2/howto/deployment/checklist/

Expand Down Expand Up @@ -47,6 +54,8 @@
"authentication",
"chat",
"gpt",
'django_crontab',
'rest_framework_simplejwt',
]

MIDDLEWARE = [
Expand All @@ -59,9 +68,20 @@
"django.middleware.clickjacking.XFrameOptionsMiddleware",
"corsheaders.middleware.CorsMiddleware",
]

CRONJOBS = [
('0 2 * * *', 'django.core.management.call_command', ['cleanup_conversations']),
]
ROOT_URLCONF = "backend.urls"

REST_FRAMEWORK = {
"DEFAULT_PAGINATION_CLASS": "rest_framework.pagination.PageNumberPagination",
"PAGE_SIZE": 10,
'DEFAULT_AUTHENTICATION_CLASSES': (
'rest_framework_simplejwt.authentication.JWTAuthentication',
)
}


TEMPLATES = [
{
"BACKEND": "django.template.backends.django.DjangoTemplates",
Expand All @@ -85,12 +105,17 @@
# https://docs.djangoproject.com/en/4.2/ref/settings/#databases

DATABASES = {
"default": {
"ENGINE": "django.db.backends.sqlite3",
"NAME": BASE_DIR / "db.sqlite3",
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'fullstack_db',
'USER': 'postgres',
'PASSWORD': 'Pvinod@123',
'HOST': 'localhost',
'PORT': '5432',
}
}


# Password validation
# https://docs.djangoproject.com/en/4.2/ref/settings/#auth-password-validators

Expand Down Expand Up @@ -149,3 +174,36 @@
SESSION_COOKIE_SECURE = True
CSRF_COOKIE_SECURE = True
CSRF_COOKIE_SAMESITE = "None"

LOGGING = {
'version': 1,
'disable_existing_loggers': False,
'formatters': {
'verbose': {
'format': '{asctime} [{levelname}] {name}: {message}',
'style': '{',
},
},
'handlers': {
'file': {
'level': 'INFO',
'class': 'logging.FileHandler',
'filename': BASE_DIR / 'file_activity.log',
'formatter': 'verbose',
},
},
'loggers': {
'file_activity': {
'handlers': ['file'],
'level': 'INFO',
'propagate': False,
},
},
}

CACHES = {
'default': {
'BACKEND': 'django.core.cache.backends.filebased.FileBasedCache',
'LOCATION': BASE_DIR / 'django_cache', # Directory to store cache files
}
}
10 changes: 9 additions & 1 deletion backend/backend/urls.py
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Expand Up @@ -4,6 +4,7 @@
from django.http import JsonResponse
from django.urls import include, path
from rest_framework.decorators import api_view
from rest_framework_simplejwt.views import TokenObtainPairView, TokenRefreshView


@api_view(["GET"])
Expand All @@ -16,5 +17,12 @@ def root_view(request):
path("chat/", include("chat.urls")),
path("gpt/", include("gpt.urls")),
path("auth/", include("authentication.urls")),
path("api/", include("chat.urls")),
path("", root_view),
] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)

# JWT Auth Endpoints
path("api/token/", TokenObtainPairView.as_view(), name="token_obtain_pair"),
path("api/token/refresh/", TokenRefreshView.as_view(), name="token_refresh"),
]

urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
18 changes: 16 additions & 2 deletions backend/chat/admin.py
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@@ -1,10 +1,24 @@
from django.contrib import admin
from django.utils import timezone
from nested_admin.nested import NestedModelAdmin, NestedStackedInline, NestedTabularInline
from django.utils.html import format_html
from django.conf import settings

from chat.models import Conversation, Message, Role, Version
from chat.models import Conversation, Message, Role, Version, UploadedFile


@admin.register(UploadedFile)
class UploadedFileAdmin(admin.ModelAdmin):
list_display = ['file', 'conversation', 'uploaded_at', 'download_link']
list_filter = ['conversation']
search_fields = ['file', 'conversation__title']

def download_link(self, obj):
return format_html(
f"<a href='{settings.MEDIA_URL}{obj.file}' target='_blank'>Download</a>"
)
download_link.short_description = "Download"

class RoleAdmin(NestedModelAdmin):
list_display = ["id", "name"]

Expand Down Expand Up @@ -51,7 +65,7 @@ def queryset(self, request, queryset):
class ConversationAdmin(NestedModelAdmin):
actions = ["undelete_selected", "soft_delete_selected"]
inlines = [VersionInline]
list_display = ("title", "id", "created_at", "modified_at", "deleted_at", "version_count", "is_deleted", "user")
list_display = ("title","topic","id", "created_at", "modified_at", "deleted_at", "version_count", "is_deleted", "user")
list_filter = (DeletedListFilter,)
ordering = ("-modified_at",)

Expand Down
2 changes: 2 additions & 0 deletions backend/chat/apps.py
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Expand Up @@ -4,3 +4,5 @@
class ChatConfig(AppConfig):
default_auto_field = "django.db.models.BigAutoField"
name = "chat"
def ready(self):
import chat.signals
14 changes: 14 additions & 0 deletions backend/chat/management/commands/cleanup_conversations.py
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@@ -0,0 +1,14 @@
from django.core.management.base import BaseCommand
from django.utils import timezone
from datetime import timedelta
from chat.models import Conversation

class Command(BaseCommand):
help = "Soft deletes conversations older than 30 days"

def handle(self, *args, **options):
threshold_date = timezone.now() - timedelta(days=30)
old_conversations = Conversation.objects.filter(created_at__lt=threshold_date, deleted_at__isnull=True)

count = old_conversations.update(deleted_at=timezone.now())
self.stdout.write(self.style.SUCCESS(f"{count} old conversations soft-deleted."))
17 changes: 17 additions & 0 deletions backend/chat/management/commands/populate_search_vectors.py
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@@ -0,0 +1,17 @@
from django.core.management.base import BaseCommand
from django.contrib.postgres.search import SearchVector
from chat.models import FileChunk

class Command(BaseCommand):
help = "Populate search_vector field in FileChunk"

def handle(self, *args, **kwargs):
chunks = FileChunk.objects.all()
count = 0

for chunk in chunks:
chunk.search_vector = SearchVector('content')
chunk.save()
count += 1

self.stdout.write(self.style.SUCCESS(f"Updated {count} FileChunks with search_vector"))
18 changes: 18 additions & 0 deletions backend/chat/migrations/0002_conversation_topic.py
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@@ -0,0 +1,18 @@
# Generated by Django 5.2.4 on 2025-07-03 15:20

from django.db import migrations, models


class Migration(migrations.Migration):

dependencies = [
('chat', '0001_initial'),
]

operations = [
migrations.AddField(
model_name='conversation',
name='topic',
field=models.CharField(blank=True, max_length=100, null=True),
),
]
18 changes: 18 additions & 0 deletions backend/chat/migrations/0003_conversation_summary.py
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@@ -0,0 +1,18 @@
# Generated by Django 5.2.4 on 2025-07-03 15:39

from django.db import migrations, models


class Migration(migrations.Migration):

dependencies = [
('chat', '0002_conversation_topic'),
]

operations = [
migrations.AddField(
model_name='conversation',
name='summary',
field=models.TextField(blank=True, null=True),
),
]
21 changes: 21 additions & 0 deletions backend/chat/migrations/0004_uploadedfile.py
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# Generated by Django 5.2.4 on 2025-07-03 18:24

from django.db import migrations, models


class Migration(migrations.Migration):

dependencies = [
('chat', '0003_conversation_summary'),
]

operations = [
migrations.CreateModel(
name='UploadedFile',
fields=[
('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('file', models.FileField(upload_to='uploads/')),
('uploaded_at', models.DateTimeField(auto_now_add=True)),
],
),
]
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