Automatically generated by the following script, based on the output
of lint with flake8-comma:
import re
import sys
last_filename = None
last_row = None
lines = []
for msg in sys.stdin:
m = re.match(
r"\x1b\[35mflake8 \|\x1b\[0m \x1b\[1;31m(.+):(\d+):(\d+): (\w+)", msg
)
if m:
filename, row_str, col_str, err = m.groups()
row, col = int(row_str), int(col_str)
if filename == last_filename:
assert last_row != row
else:
if last_filename is not None:
with open(last_filename, "w") as f:
f.writelines(lines)
with open(filename) as f:
lines = f.readlines()
last_filename = filename
last_row = row
line = lines[row - 1]
if err in ["C812", "C815"]:
lines[row - 1] = line[: col - 1] + "," + line[col - 1 :]
elif err in ["C819"]:
assert line[col - 2] == ","
lines[row - 1] = line[: col - 2] + line[col - 1 :].lstrip(" ")
if last_filename is not None:
with open(last_filename, "w") as f:
f.writelines(lines)
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
Generated by pyupgrade --py36-plus --keep-percent-format, but with the
NamedTuple changes reverted (see commit
ba7906a3c6, #15132).
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Option to disable breadcrumb messages were given in both message edit
form and topic edit stream popover.
User now has the option to select which stream to send the notification
of stream edit of a topic via checkboxes in the UI.
We pipe realm_id through functions where it is available,
this helps us avoid doing query for realm_id in loop when
multiple messages are being processed.
mock is just a backport of the standard library’s unittest.mock now.
The SAMLAuthBackendTest change is needed because
MagicMock.call_args.args wasn’t introduced until Python
3.8 (https://bugs.python.org/issue21269).
The PROVISION_VERSION bump is skipped because mock is still an
indirect dev requirement via moto.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This commit merges do_change_is_admin and do_change_is_guest to a
single function do_change_user_role which will be used for changing
role of users.
do_change_is_api_super_user is added as a separate function for
changing is_api_super_user field of UserProfile.
During events such as stream / topic name edit for a topic, we were
running queries to db in loop for each message for reactions,
submessages and realm_id. This commit reduces the queries to be
done only for realm_id, which is yet to be fixed.
This is accomplished by building messages with empty reactions
and submessages and then updating them in the messages using bulk
queries.
Previously, the message and event APIs represented the user differently
for the same reaction data. To make this more consistent, I added a
user_id field to the reaction dict for both messages and events. I
updated the front end to use the user_id field rather than the user
dict. Lastly, I updated front end and back end tests that used user
info.
I primarily tested this by running my local Zulip build and
adding/removing reactions from messages.
Fixes#12049.
Generated by autopep8, with the setup.cfg configuration from #14532.
I’m not sure why pycodestyle didn’t already flag these.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
Generated by `pyupgrade --py3-plus --keep-percent-format` on all our
Python code except `zthumbor` and `zulip-ec2-configure-interfaces`,
followed by manual indentation fixes.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This commit reuses the existing infrastructure for moving a topic
within a stream to add support for moving topics from one stream to
another.
Split from the original full-feature commit so that we can merge just
the backend, which is finished, at this time.
This is a large part of #6427.
The feature is incomplete, in that we don't have real-time update of
the frontend to handle the event, documentation, etc., but this commit
is a good mergable checkpoint that we can do further work on top of.
We also still ideally would have a test_events test for the backend,
but I'm willing to leave that for follow-up work.
This appears to have switched to tabbott as the author during commit
squashing sometime ago, but this commit is certainly:
Co-Authored-By: Wbert Adrián Castro Vera <wbertc@gmail.com>
The distinction between ValueError and TypeError
is not useful in these functions:
- extract_stream_indicator
- extract_private_recipients (or its callees)
These are always invoked in views to validate
user input.
When we use REQ to wrap the validators, any
Exception gets turned into a JsonableError, so
the distinction is not important.
And if we don't use REQ to wrap the validators,
the errors aren't caught.
Now we just let these functions directly produce
the desired end result for both codepaths.
Also, we now flag the error strings for translation.
This setting is being overridden by the frontend since the last
commit, and the security model is clearer and more robust if we don't
make it appear as though the markdown processor is handling this
issue.
Co-authored-by: Tim Abbott <tabbott@zulipchat.com>
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
When more than one outgoing webhook is configured,
the message which is send to the webhook bot passes
through finalize_payload function multiple times,
which mutated the message dict in a way that many keys
were lost from the dict obj.
This commit fixes that problem by having
`finalize_payload` return a shallow copy of the
incoming dict, instead of mutating it. We still
mutate dicts inside of `post_process_dicts`, though,
for performance reasons.
This was slightly modified by @showell to fix the
`test_both_codepaths` test that was added concurrently
to this work. (I used a slightly verbose style in the
tests to emphasize the transformation from `wide_dict`
to `narrow_dict`.)
I also removed a deepcopy call inside
`get_client_payload`, since we now no longer mutate
in `finalize_payload`.
Finally, I added some comments here and there.
For testing, I mostly protect against the root
cause of the bug happening again, by adding a line
to make sure that `sender_realm_id` does not get
wiped out from the "wide" dictionary.
A better test would exercise the actual code that
exposed the bug here by sending a message to a bot
with two or more services attached to it. I will
do that in a future commit.
Fixes#14384
Overall, this change eliminates a lot of
optional parameters and conditionals, plus
some legacy logic related to caches.
For all the places we are just editing topics,
we now just call `check_topic` to see that
the topic got updated.
For places where the topic edit failed, we
just inline the checks that message still
has the old topic and content.
And then for successful **content** edits,
we now do a more rigorous, more sane check
that the messages are properly cached. The
old code here had evolved from 2013 into
something that didn't really make much sense
in the context of editing topics.
Now we are literally pulling data from the
cache and making sure it's valid, rather
than trying to poorly simulate the two
codepaths related to dispatching message
events and fetching messages. Some of the
history here was that when I introduced
`MessageDict` several years ago, I did a
lot of code sweeping and didn't analyze every
single test to make sure it's still valid,
plus some of the tests still had some value
for catching regressions. A recent commit
now gets us coverage on that a lot more
explicitly, rather than in passing.
See the comment in the test for a thorough explanation.
In brief, this test makes sure that the events codepath
for messages produces the same results as the fetch
codepath.
And this sets us up to simplify another test that kind
of poorly tried to do the same thing in passing. (In
fairness the test was really ancient and preceded a lot
of later work that we did here.)
This improves the error handling for invalid values of the
propagate_mode parameter to our message editing endpoints.
Previously, invalid values would just work like change_one rather than
doing nothing.
We try to use the correct variation of `email`
or `delivery_email`, even though in some
databases they are the same.
(To find the differences, I temporarily hacked
populate_db to use different values for email
and delivery_email, and reduced email visibility
in the zulip realm to admins only.)
In places where we want the "normal" realm
behavior of showing emails (and having `email`
be the same as `delivery_email`), we use
the new `reset_emails_in_zulip_realm` helper.
A couple random things:
- I fixed any error messages that were leaking
the wrong email
- a test that claimed to rely on the order
of emails no longer does (we sort user_ids
instead)
- we now use user_ids in some place where we used
to use emails
- for IRC mirrors I just punted and used
`reset_emails_in_zulip_realm` in most places
- for MIT-related tests, I didn't fix email
vs. delivery_email unless it was obvious
I also explicitly reset the realm to a "normal"
realm for a couple tests that I frankly just didn't
have the energy to debug. (Also, we do want some
coverage on the normal case, even though it is
"easier" for tests to pass if you mix up `email`
and `delivery_email`.)
In particular, I just reset data for the analytics
and corporate tests.
We now have this API...
If you really just need to log in
and not do anything with the actual
user:
self.login('hamlet')
If you're gonna use the user in the
rest of the test:
hamlet = self.example_user('hamlet')
self.login_user(hamlet)
If you are specifically testing
email/password logins (used only in 4 places):
self.login_by_email(email, password)
And for failures uses this (used twice):
self.assert_login_failure(email)
This reduces query counts in some cases, since
we no longer need to look up the user again. In
particular, it reduces some noise when we
count queries for O(N)-related tests.
The query count is usually reduced by 2 per
API call. We no longer need to look up Realm
and UserProfile. In most cases we are saving
these lookups for the whole tests, since we
usually already have the `user` objects for
other reasons. In a few places we are simply
moving where that query happens within the
test.
In some places I shorten names like `test_user`
or `user_profile` to just be `user`.
Previously, get_client_name was responsible for both parsing the
User-Agent data as well as handling the override behavior that we want
to use "website" rather than "Mozilla" as the key for the Client object.
Now, it's just responsible for User-Agent, and the override behavior
is entirely within process_client (the function concerned with Client
objects).
This has the side effect of changing what `Client` object we'll use
for HTTP requests to /json/ endpoints that set the `client` attribute.
I think that's in line with our intent -- we only have a use case for
API clients overriding the User-Agent parsing (that feature is a
workaround for situations where the third party may not control HTTP
headers but does control the HTTP request payload).
This loses test coverage on the `request.GET['client']` code path; I
disable that for now since we don't have a real use for that behavior.
(We may want to change that logic to have Client recognize individual
browsers; doing so requires first using a better User-Agent parsing
library).
Part of #14067.
The "sender" property in `send_message_backend` is meant to only do
something when doing Zephyr mirroring (or similar). We should help
clients behave correctly by banning this property in requests that are
not specifically requesting mirroring behavior.
This commit requires changes to a number of tests that incorrectly
passed this parameter or didn't use the right setup for mirroring.
The special Zephyr mirroring logic is only intended to be used via the
API, so this sets up a more effective test. It also allows us to
remove certain Client parsing logic for the /json/ views using session
authentication.
This uses the better, modern, user ID based API for sending messages
internally in the test suite, something that's convenient to do as a
follow-up to the migration to pass UserProfile objects to these
functions.
This commit mostly makes our tests less
noisy, since emails are no longer an important
detail of sending messages (they're not even
really used in the API).
It also sets us up to have more scrutiny
on delivery_email/email in the future
for things that actually matter. (This is
a prep commit for something along those
lines, kind of hard to explain the full
plan.)
/delete_topic endpoint could be used to request the deletion of a topic,
that would cause do_delete_messages to be called with an empty set in
these cases:
1. Requesting deletion of an empty stream.
2. Requesting deletion of a topic in a private stream with history not
public to subscribers, if the requesting admin doesn't have access to
any of the messages in that topic.
This is mostly refactoring, but we also prevent a new
type of value error (list of non-int-or-string). The
new test code helps enforce that.
Cleanup includes:
- Use early-exit for email case.
- Rename helpers to get_validate_*.
- Avoid clumsy rebuilding of lists in helpers.
- Avoid the confusing `recipient` name (which
can be confused with the model by the same
name).
- Just delegate duplicate-id/email-removal to
the helpers.
The cleaner structure allows us to elminate a couple
mypy workarounds.
This avoids using `.save()` directly for editing stream properties,
and also uses the API in _send_and_verify_message to avoid confusing
logic around which user is doing what request.
Fixes part of #13823
Django 2.2.x is the next LTS release after Django 1.11.x; I expect
we'll be on it for a while, as Django 3.x won't have an LTS release
series out for a while.
Because of upstream API changes in Django, this commit includes
several changes beyond requirements and:
* urls: django.urls.resolvers.RegexURLPattern has been replaced by
django.urls.resolvers.URLPattern; affects OpenAPI code and related
features which re-parse Django's internals.
https://code.djangoproject.com/ticket/28593
* test_runner: Change number to suffix. Django changed the name in this
ticket: https://code.djangoproject.com/ticket/28578
* Delete now-unnecessary SameSite cookie code (it's now the default).
* forms: urlsafe_base64_encode returns string in Django 2.2.
https://docs.djangoproject.com/en/2.2/ref/utils/#django.utils.http.urlsafe_base64_encode
* upload: Django's File.size property replaces _get_size().
https://docs.djangoproject.com/en/2.2/_modules/django/core/files/base/
* process_queue: Migrate to new autoreload API.
* test_messages: Add an extra query caused by .refresh_from_db() losing
the .select_related() on the Realm object.
* session: Sync SessionHostDomainMiddleware with Django 2.2.
There's a lot more we can do to take advantage of the new release;
this is tracked in #11341.
Many changes by Tim Abbott, Umair Waheed, and Mateusz Mandera squashed
are squashed into this commit.
Fixes#10835.
We now validate streams with a separate
function from PM recipients.
It's confusing enough all the ways you can
encode a stream or encode the PM recipients,
but trying to do it all in one function was
hard to reason about and led to at least one
bug.
In particular, there was a bug where streams
with commas in them would get split. Now
we just don't ever split on commas inside
of `extract_stream_indicator`.
Fixes#13836
After removing internal_send_message() in a recent
commit, we now have only two callers for
extract_recipients, and they are both related
to our REQ mechanism that always passes strings
to converters. (If there are default values,
REQ does not call the converters.)
We therefore make two changes:
- use the more strict annotation of "str"
for the `s` parameter
- don't bother with the isinstance check
This index is intended to optimize the performance of the very
frequently run query of "what is the presence status of all users in a
realm?".
Main changes:
- add realm_id to UserPresence
- add index for realm_id
- backfill realm_id for old rows
- change all writes to UserPresence to include
realm_id
The index is of this form:
"zerver_userpresence_realm_id_5c4ef5a9" btree (realm_id)
We will create an index on (realm_id, timestamp) in a
future commit, but I think it's a bit faster if you do
the backfill before the index.
There's also a minor tweak to the populate_db script.
This commit includes a new `stream_post_policy` setting,
by replacing the `is_announcement_only` field from the Stream model,
which is done by mirroring the structure of the existing
`create_stream_policy`.
It includes the necessary schema and database migrations to migrate
the is_announcement_only boolean field to stream_post_policy,
a smallPositiveInteger field similar to many other settings.
This change is done to allow organization administrators to restrict
new members from creating and posting to a stream. However, this does
not affect admins who are new members.
With many tweaks by tabbott to documentation under /help, etc.
Fixes#13616.
Now that we have the type situation of having anchor support passing a
string, this is a much more natural way to implement
use_first_unread_anchor.
We still support the old interface to avoid breaking compatibility
with legacy versions of the mobile apps.
A wart that has long been present inin Zulip's get_messages API is how
to request "the latest messages" in the API. Previously, the
recommendation was basically to pass anchor=10000000000000000 (for an
appropriately huge number). An accident of the server's implementation
meant that specific number of 0s was actually important to avoid a
buggy (or at least wasteful) value of found_newest=False if the query
had specified num_after=0 (since we didn't check).
This was the cause of the mobile issue
https://github.com/zulip/zulip-mobile/issues/3654.
The solution is to allow passing a special value of anchor='newest',
basically a special string-type value that the server can interpret as
meaning the user precisely just wants the most recent messages. We
also add an analogous anchor='oldest' or similar to avoid folks
needing to write a somewhat ugly anchor=0 for fetching the very first
messages.
We may want to also replace the use_first_unread_anchor argument to be
a "first_unread" value for the anchor parameter.
While it's not always ideal to make a value have a variable type like
this, in this case it seems like a really clean way to express the
idea of what the user is asking for in the API.
This experimental setting disables sending private messages in Zulip
in a crude way (i.e. users get an error when they try to send one).
It makes no effort to adjust the UI to avoid advertising the idea of
sending private messages.
Fixes#6617.
In 3892a8afd8, we restructured the
system for managing uploaded files to a much cleaner model where we
just do parsing inside bugdown.
That new model had potentially buggy handling of cases around both
relative URLs and URLS starting with `realm.host`.
We address this by further rewriting the handling of attachments to
avoid regular expressions entirely, instead relying on urllib for
parsing, and having bugdown output `path_id` values, so that there's
no need for any conversions between formats outside bugdowm.
The check_attachment_reference_change function for processing message
updates is significantly simplified in the process.
The new check on the hostname has the side effect of requiring us to
fix some previously weird/buggy test data.
Co-Author-By: Anders Kaseorg <anders@zulipchat.com>
Co-Author-By: Rohitt Vashishtha <aero31aero@gmail.com>
This removes the last of the messy use of regular expressions outside
bugdown to make decisions on whether a message contains an attachment
or not. Centralizing questions about links to be decided entirely
within bugdown (rather than doing ad-hoc secondary parsing elsewhere)
makes the system cleaner and more robust.
This commit wraps up the work to remove basic regex based parsing
of messages to handle attachment claiming/unclaiming. We now use
the more dependable Bugdown processor to find potential links and
only operate upon those links instead of parsing the full message
content again.
Previously, we would naively set has_attachment just by searching
the whole messages for strings like `/user_uploads/...`. We now
prevent running do_claim_attachments for messages that obviously
do not have an attachment in them that we previously ran.
For example: attachments in codeblocks or
attachments that otherwise do not match our link syntax.
The new implementation runs that check on only the urls that
bugdown determines should be rendered. We also refactor some
Attachment tests in test_messages to test this change.
The new method is:
1. Create a list of potential_attachment_urls in Bugdown while rendering.
2. Loop over this list in do_claim_attachments for the actual claiming.
For saving:
3. If we claimed an attachment, set message.has_attachment to True.
For updating:
3. If claimed_attachment != message.has_attachment: update has_attachment.
We do not modify the logic for 'unclaiming' attachments when editing.
This is a performance optimization, since we can avoid doing work
related to wildcard mentions in the common case that the message can't
have any. We also add a unit test for adding wildcard mentions in a
message edit.
Then, find and fix a predictable number of previous misuses.
With a small change by tabbott to preserve backwards compatibility for
sending `yes` for the `forged` field.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This is a follow-up to b69213808a.
We now actually send messages from the notification_bot, which
is the real usecase for this code.
Also, this cleans up the code and removes needless asserts like
`assertNotEqual(zulip_realm, lear_realm)` making the test easier
to read.
Priviously, we rendered the topic links using the msg.sender.realm.
This resulted in issues with Zulip's internal bots not having access
to the realm_filters of the destination stream's realm. For example,
sending a message via the email gateway or notification would not
linkify any realm filters that a user would expect them to.
Fixes#1727.
With the server down, apply migrations 0245 and 0246. 0246 will remove
the pub_date column, so it's essential that the previous migrations
ran correctly to copy data before running this.
This was used as a helper to construct the final display_recipient when
fetching messages. With the new mechanism of constructing
display_recipient by fetching appropriate users/streams from the
database and cache, this shouldn't be needed anymore.
Instead of having the rather unclear type Union[str,
List[UserDisplayRecipient]] where display_recipient of message dicts was
involved, we use DisplayRecipientT (renamed from DisplayRecipientCacheT
- since there wasn't much reason to have the word Cache in there), which
makes it clearer what is the actual nature of the objects and gets rid
of this pretty big type declaration.
Since the display_recipients dictionaries corresponding to users are
always dictionaries with keys email, full_name, short_name, id,
is_mirror_dummy - instead of using the overly general Dict[str, Any]
type, we can define a UserDisplayRecipient type,
using an appropriate TypedDict.
The type definitions are moved from display_recipient.py to types.py, so
that they can be imported in models.py.
Appropriate type adjustments are made in various places in the code
where we operate on display_recipients.
The user information in display_recipient in cached message_dicts
becomes outdated if the information is changed in any way.
In particular, since we don't have a way to find all the message
objects that might contain PMs after an organization toggles the
setting to hide user email addresses from other users, we had a
situation where client might see inaccurate cached data from before
the transition for a period of up to hours.
We address this by using our generic_bulk_cached_fetch toolchain to
ensure we always are fetching display_recipient data from the database
(and/or a special recipient_id -> display_recipient cache, which we
can flush easily).
Fixes#12818.
Previously, our OpenAPI documentation validation was failing for some
endpoints because it didn't account for the `in: path` type of
parameter, resulting in a mismatch between what was declared via REQ
and what was declared in the OpenAPI docs.
We fix this by excluding the path type parameters in both places from
what's considered by documentation using the `path_only` flag.
I doubt this is the correct long-term fix; in particular, I don't
think we're actually running the validators for these path-only
parameters. The examples that exist today are all IDs with validators
for being non-negative numbers, but longer-term I think we'll want to
do something different (possibly at the REQ layer, see the TODO).
Previously, we didn't have validation to prevent editing certain flags
that don't make sense for a client to edit, like whether a user was
mentioned in a given message.
This isn't a security issue -- the user could only mess up their own
personal search results (etc.), but it does seem worth fixing to avoid
confusion for folks developing Zulip clients.
While we're at it, clearly document the situation in comments.
This makes the implementation of `get_realm` consistent with its
declared return type of `Realm` rather than `Optional[Realm]`.
Fixes#12263.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This enables the function to either return a valid UserProfile or raise
InvalidMirrorInput, which is clearer and more pythonic than the previous
approach of a tuple of a bool and Optional[UserProfile].
In making the type clearer, this improves checking with mypy.
Tests updated.
Extend the list of users that have to be notified when a message is
changed, so that in addition to users who have a UserMessage row, any
users who subscribed later to a stream with history public to
subscribers will also get the update.
Fixes: #8750.
This adds experimental support in /register for sending key
statistical data on the last 1000 private messages that the user is a
participant in. Because it's experimental, we require developers to
request it explicitly in production (we don't use these data yet in
the webapp, and it likely carries some perf cost).
We expect this to be extremely helpful in initializing the mobile app
user experience for showing recent private message conversations.
See the code comments, but this has been heavily optimized to be very
efficient and do all the filtering work at the database layer so that
we minimize network transit with the database.
Fixes#11944.
A user who has been soft deactivated for a long time might have 10Ks of message
history that was "soft deactivated". It might take a minute or more to add
UserMessage rows for all of these messages, causing timeouts. So, we paginate
the creation of these UserMessage rows.
For internal stream messages, most of the time, we have access to
a Stream object. For the few corner cases where we don't, it is a
much cleaner approach to have a separate function that accepts a
stream name than having one multi-option helper that accepts both
names and objects.
If the caller has access to a Stream object, it is wasteful to
query a database for a stream by ID or name. In addition, not
having to go through stream names eliminates various classes of
possible bugs involved with re-fetching the Stream object by name.
The name for_stream_name is more appropriate here. The name
for_stream is more suitable for a function that takes in a Stream
object, which we're about to add.
This is primarily a feature for onboarding, where an organization
administrator might send a bunch of random test messages as part of
joining, but then want a pristine organization when their users later
join.
But it can theoretically be used for other use cases (e.g. for
moderation or removing threads that are problematic in some way).
Tweaked by tabbott to handle corner cases with
is_history_public_to_subscribers.
Fixes#10912.
This commit also contains the following auxiliary changes:
* Adds a custom exception, StreamWithIDDoesNotExist for when
a stream with a given ID does not exist because the error
message returned by StreamDoesNotExist only makes with stream
names, not IDs.
* Adds a new helper, get_stream_by_id_in_realm, which is similar
to get_user_profile_by_id_in_realm (introduced in #10391).
* Adds a helper, validate_stream_id_with_pm_notification, which
returns the Stream object associated with a given ID and also
handles PM notifications to the bot owner if the message was
sent by a bot and if the stream does not exist or has no
subscribers.
* Modifies the message sent by send_pm_if_empty_stream to
accommodate stream IDs.
Note that all of the above changes are required before check_message
can be modified to support stream IDs.
Multiple delete message requests for the same message sometimes caused
a 500 error. This happened via the normal IntegrityError being thrown
by delete message/archiving code.
This was manually reproduced by adding latency in function
move_messages_to_archive() in retention.py and
delete_message_backend() in views.py. This addresses the problem by
adding code to handle the exception and throw JsonableError to convert
500 to 400 errors, with an automated test.
We make this change because setting up reminders in PM's didn't
play really well with our current infrastructure. Basically the
reminder messages from the bot can't appear in the same narrow as
that of a PM between two people and therefore we disable it.
Though we make an exception here where a person wants to set up
reminder for himself.
Anders Kaseorg
Anders Kaseorg
Aman Agrawal
Alex Vandiver
sahil839
Rohan Prashant
rebtung
Tim Abbott
Steve Howell
Udit107710
Stefan Weil
Mateusz Mandera
Ryan Rehman
rht
Vishnu KS
Rohitt Vashishtha
dustinheestand
Rishi Gupta
Mohit Gupta
neiljp (Neil Pilgrim)
clarammdantas
Puneeth Chaganti
Eeshan Garg
Anders Kaseorg
kunal-mohta
Pragati Agrawal
Aditya Bansal