MBL-1403 Stripe Link

[ycheng-kickstarter]

📲 What

Implement Stripe Link

🤔 Why

To enable 1-click checkout

🛠 How

Update Stripe sdk version to 20.42.0
Pass in user email to PaymentSheet.Configuration
Hide Stripe Link on user's payment methods settings screen to match iOS and web behavior

👀 See

User adds a new payment method and can check the box at the bottom that saves the info to Link OR click on green Pay with Link button on top:

A return user sees the option to Pay with Link with their associated email:

Users should not see Link enabled in their settings payment methods. Unfortunately there isn't a clientside way to turn it completely off; instead they'll see an extra email field which is not ideal:

📋 QA

Manually override the feature flag value in ContextExt.kt to make it easier to QA for now.
When you get to the verification step in the Stripe Link checkout flow, enter 000000

Try out the new Stripe Link flow for adding new payment methods on

• Pledge flow
• Late pledge flow

Stripe Link should NOT be an option on the payment methods settings screen

• Settings-> Account -> Payment methods

Reminder that test cards can be found here: https://docs.stripe.com/testing

Story 📖

https://kickstarter.atlassian.net/browse/MBL-1403

[ycheng-kickstarter]

Can someone explain to me where this R.string.email string went? It's not in strings_i18n.xml

[Arkariang]

strings_i18n.xml is automatically generated after executing milkrun update-strings (to obtain translations, take a look at this guru card). I assume the latest translations got that changed

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 31.25000% with 11 lines in your changes are missing coverage. Please review.

Project coverage is 67.79%. Comparing base (4ce4997) to head (086348a).

Files	Patch %	Lines
...om/kickstarter/libs/utils/extensions/ContextExt.kt	0.00%	10 Missing ⚠️
...ckstarter/ui/activities/compose/FormularyScreen.kt	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2038      +/-   ##
============================================
- Coverage     67.82%   67.79%   -0.03%     
- Complexity     2096     2097       +1     
============================================
  Files           353      353              
  Lines         21554    21564      +10     
  Branches       3043     3044       +1     
============================================
+ Hits          14618    14620       +2     
- Misses         5295     5304       +9     
+ Partials       1641     1640       -1     

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