`PaywallView` and `PaywallViewController` (along with the extensions)
still require iOS 16, but this paves the way to support iOS 15 down the
road if we need to.
### Main Changes:
- Changed all `@available` annotations
- Added CI tests
- Replaced `ViewThatFits` with the "biggest" version
- Because of that, `scrollableIfNeeded` is always scrollable
- Double `Regex` implementation (keeping the modern one), so once we
drop support for iOS 15 we can just keep the modern one.
### TODO:
- [x] Add snapshots
- [x] Test paywalls
- [x] Updated APITester to verify this
- Improved `PaywallView` API: now there's only 2 constructors (with
optional `Mode` parameters):
- `PaywallView()`
- `PaywallView(offering:)`
- New `PaywallData.default` as a fallback when trying to present a
paywall with missing data (either because it failed to decode, or it's
missing)
- Extracted error state handling to `ErrorDisplay` (used by
`PaywallView` and `AsyncButton` now). It can optionally dismiss the
presenting sheet.
- Handling offering loading errors in `PaywallView`
- Improved `DebugErrorView` to allow displaying a fallback view:
```swift
DebugErrorView(
"Offering '\(offering.identifier)' has no configured paywall.\n" +
"The displayed paywall contains default configuration.\n" +
"This error will be hidden in production.",
releaseBehavior: .replacement(
AnyView(
LoadedOfferingPaywallView(
offering: offering,
paywall: .default,
mode: mode,
introEligibility: checker,
purchaseHandler: purchaseHandler
)
)
)
)
```
- Added `LoadingPaywallView` as a placeholder view during loading
- Improved `MultiPackageTemplate` and `RemoteImage` to fix some layout
issues during transitions
- Added transition animations between loading state and loaded paywall
JayShortway