…cart views

…out and updated when any cart is validated before checkout

…ot yet exist

… adding to cart

* Merge master into ticketing

* Move ticketing migration to end

This reverts commit 03214af.

Merge frontend ticketing branch into main ticketing feature branch.

---------

Co-authored-by: Rohan Gupta <[email protected]>
Co-authored-by: dfeng678 <[email protected]>
Co-authored-by: alnasir7 <[email protected]>
Co-authored-by: Mohamed Abaker <[email protected]>
Co-authored-by: DiiZyy <[email protected]>
Co-authored-by: printer83mph <[email protected]>
Co-authored-by: Avi Upadhyayula <[email protected]>
Co-authored-by: cphalen <[email protected]>
Co-authored-by: Alexander Kyimpopkin <[email protected]>
Co-authored-by: Joy Liu <[email protected]>
Co-authored-by: Rohan Moniz <[email protected]>
Co-authored-by: joel8019 <[email protected]>
Co-authored-by: Eunsoo Shin <[email protected]>

Make TicketsTab not crash

* Add check on event deletion

* add cybersource package

* Capture context generation + local dev setup instructions (#645)

* capture context view

* fix populate

* move capture context generation to checkout view

* Optimize Django ops in cart validation

* Use Q objects in cart validation

* switch out nginx for local-ssl-proxy

---------

Co-authored-by: aviupadhyayula <[email protected]>

* fix target origin url

* Closes #632 (#648)

* This commit resolves #632:

- Add logic to interact with the CyberSource API to validate
transaction data and also confirm the payment.
- Add appropriate error handling for API invocation failures causing
transaction failure.
- Store the transaction data in a new model `TicketTransactionRecord`
for bookkeeping purposes. Each ticket is also associated with an
instance of this class.
- On transaction success, assign the ticket to the user, remove holds
and from cart, and send out confirmation email.

* Address PR comments, query opt, and others

- More judicious use of `select_for_update`: only lock when updating
holder/owner.
- Better prefetching/bulk updating throughout the query logic
- Return HTTP status codes
- Refactor as per PR comments

* Validate the transient token's signature

- I tested the workflow from `initiate_checkout` to `complete_checkout`
and was able to get it working.
- Ironed out a few bugs
- Add the `reconciliation_id` as a field on the transaction record;
could be useful to generate reports. We'll need to figure out what else
to store to interact with their reporting API.

* Make reconciliation_id nullable to support free tickets

* Address nit, refactor ticket count logic to SQL

* merge migrations...

* pipenv lock again

* Pin uwsgi...2.0.25 breaks CI

---------

Co-authored-by: aviupadhyayula <[email protected]>
Co-authored-by: Rohan Moniz <[email protected]>

* Set & enforce order limit on ticket purchases

* Add migration

* Default tix order limit to 10

* Consolidate migrations

* Check each carted event's order limit

* Move limit validation to `add_to_cart`

* Fix typo 😔

* Address nits with validation logic

* Minor refactor

* Integrate ticket price field into ticket creation/list views, as well into ticket creation frontend.

* Enforce non-negative ticket prices at creation

* Add frontend checks for fractional/negative ticket count and cost.

* Prevent users from entering negative/fractional ticket counts/price for now.

---------

Co-authored-by: aviupadhyayula <[email protected]>

* Add group discount fields to ticket model

* Ingest group discount info at ticket creation

* Add validator for group size

* Add comments

* Apply discounts when checking out

* Remove model-level validators

* Remove validators from migration

* Improve comments

* Minor refactor

* Default group_discount to 0

* Remove check for discount in cart calculation

* Consolidate validation checks upon ticket creation

* Fix typo in validation upon ticket creation

* Owned tickets tab skeleton code.

* 🎉 Functional but suspicious code

* 🧹 Fix some good practice

---------

Co-authored-by: Julian Weng <[email protected]>

* Add test cases for backend ticketing APIs

Long overdue addition of tests to the ticketing backend.

Tests and fixes all the APIs under the Event and Ticket models.

There are more complex workflows with race conditions etc that are not
tested, but should be at some point. Unmerged functionality is also
not tested yet.

* Don't use locked rows to groupby

* Set cybersource settings in CI

* Address feedback

* Add to cart feature (styling is borked)

* 🐛 Broken code

* 🐛 fixed

* 🎨 Readd event preview

* 🧹 Less jank way of doing group discount visibility

* 🎨 Address comments and actually type things

* 🎨 Address nit

---------

Co-authored-by: Julian Weng <[email protected]>
Co-authored-by: Eunsoo Shin <[email protected]>

* Use capture context to verify transient token

* Add migration

* Minor changes to documentation

* Add tests

* Add comment explaining max char length