* Move AppConfig related code into it's own package.
* Use "files" instead of "cache" for storing our AppConfigApiTest.
* Add "files" to "cache" migration.
* Refactor CDN related code into an independent "environment module".

TODO: UnitTests, Fallback behavior even if cached AppConfig is stale.

* Further structure refactoring and unit test for app config cache migration.

* Added config fallback behavior for all cases + additional tests.

* Improve code readability.

* First POC for multi-environment support.

* logic for ACME test Countries toggle button in Dev menu

* ACME Test Countries dev menu

* Additional clean up and refactoring on build constants.

* Cleaned up the test fragment a bit.

* Fixed detekt issue

* Fix flaky test that depends on build variant.

* Let the test fragment show us the actual environment we toggled to.

* Changes upon review

* Address PR comments.

Co-authored-by: Rituraj Sambherao <git.rituraj.sambherao@gmail.com>

* test enhancement for interop and countrylist, added liveDataTestExtension

* better test naming, removed one assert

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

* update text

* added hyphen

* Added country list to submission of keys screen

* Ktlint changes

* Added missing  s

* Added text changes

* Removed file from wrong location

* Reverted back to old way of instantiating countryList in SubmissionViewModel

* Removed hardcoded spacing

* Changed country list text style from bold to paragraph size

* Added dimen everywhere and added back en string

Co-authored-by: Alexandru.Paulescu <alexandru.paulescu@sap.com>

* New note on interoperability

* Set new note only for onboarding delta interoperability

Interoperability: List of Countries can not be loaded for 1.5.x in new onboarding / interop (EXPOSUREAPP-2744) (#1232)

* interop nofetch riskdetails, corresponding layout and vector

* updated res to new no country spec

* nofetch fetch layouts

* Create include_interoperability_old.xml

* removed old stuff

* fixed Fixed include_interop_participating_countries_fetch for 1.5.x

* adjusted logic from old base to fit 1.5.x, Converted countryList to LiveData

* showing fetch or no fetch view in include_interoperability.xml, use github name as author

* cleanup & refactor, fixed layout switch issue, wip

* ids cleanup

* system settings delegation according to design spec

* improved countrylist handling for interopConfig Connectivity Settings

* updated string translation tags

* satisfy lint

* satisfy CircleCi

* fixed wrong layout visibility

* delta test disabled, referenced ids adjusted

* FormatHelper as requested

* fix capital letter

* Made hotline number clickable

- delcared textview clickable within xml layout
- reused dial logic from button and used for now clickable text

* removed synthetic import - now using binding instead.

Co-authored-by: Jakob Möller <jakob.moeller@sap.com>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>
Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

* Move AppConfig related code into it's own package.
* Use "files" instead of "cache" for storing our AppConfigApiTest.
* Add "files" to "cache" migration.
* Refactor CDN related code into an independent "environment module".

TODO: UnitTests, Fallback behavior even if cached AppConfig is stale.

* Further structure refactoring and unit test for app config cache migration.

* Added config fallback behavior for all cases + additional tests.

* Improve code readability.

* Remove test TODO

Changed accessibility importance of switch to avoid overriding status announcement

Co-authored-by: Jakob Möller <jakob.moeller@sap.com>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>
Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

* Make transaction timeout settable per transaction. Increase Risk Level Calc transaction

* Make timeout more readable

* text changes for existing user consent

* fixed typo

Co-authored-by: Jakob Möller <jakob.moeller@sap.com>

Co-authored-by: Jakob Möller <jakob.moeller@sap.com>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

1.4.x into 1.5.x

# Conflicts:
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/storage/LocalData.kt
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/util/di/ApplicationComponent.kt
#	Corona-Warn-App/src/main/res/navigation/nav_graph.xml
#	Corona-Warn-App/src/main/res/values/strings.xml

* Import flag assets. Create init CountrySelectionList and Fragment

* Implement missing components. Create ViewModel and Repository for Interop

* fix wrong property usage

* Implement storage of selected countries

* Implement warn dialog

* Added navigation from country selection to tracing fragment

* Fixed lint errors

* Fix typo and build error

* Move navigation out of onResume

* Implement Warning dialog and do some code cleanup

* Begin of onboarding for Interoperability. Fix linting issues

* Implement onboarding for Interoperability (#1976)

* Implement skip path of interop screen in onboarding (#1976)

* Implement navigation logic for onBoarding (#1976)

* Fix linting issues

* Adjust country list and view to new UI (#2667)

* Merge OnboardingTracingFragment with country list (#2665)

* UI adjustments (#2665)

* Fix linting issues

* Implement Delta Onboarding logic (#2665)

* Adjust interoperability screens to new UI (#2730, #2733)

* Added navigation from country selection to tracing fragment

* Fix merge issues with interoperability branch

* Fix merge issues with interoperability branch

* Fix merge changes with 1.5.x branch

* Remove unused Formatter

* Remove import of unused Formatter

* Remove import of unused Formatter

* Fix linting issue

* Adjust UI to mock changes (#2730)

* Adjust fragment binding to new solution and code cleanup

* Adjust layout ids to guidelines. Comment strings.xml

* Moved back navigation event to ViewModel

* Move to DI and ViewModel navigation

* Improve accessibility

* Improve accessibility

* Adjusted UI to updated mockups. Clean-Up of InteroperabilityRepository and LocalData

* Refactoring and ViewModel use.

* Make detekt happy.

* Fix PR comments, typos, inline getString.

* Fix refactoring typo

Co-authored-by: Alexandru.Paulescu <alexandru.paulescu@sap.com>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>
Co-authored-by: Matthias Urhahn <darken@darken.eu>

* texts for interop user consent

* default values

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

* [INTERNAL] Translation delivery: commit by LX Lab

Change-Id: I819e9a5a620221a7267bb9737396fbb966852bb0

* [INTERNAL] Translation delivery: commit by LX Lab

Change-Id: I932bc1aa24d4ebe65681cf78c1f109266e695980

Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>

# Conflicts:
#	Corona-Warn-App/src/deviceForTesters/java/de/rki/coronawarnapp/test/TestRiskLevelCalculationFragment.kt
#	Corona-Warn-App/src/deviceForTesters/java/de/rki/coronawarnapp/test/api/ui/TestForAPIFragment.kt
#	Corona-Warn-App/src/deviceForTesters/res/layout/fragment_test_for_a_p_i.xml
#	Corona-Warn-App/src/deviceForTesters/res/navigation/nav_graph.xml
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/transaction/RetrieveDiagnosisKeysTransaction.kt
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/util/di/ApplicationComponent.kt
#	Corona-Warn-App/src/test/java/de/rki/coronawarnapp/transaction/RetrieveDiagnosisKeysTransactionTest.kt

* update privacy de & en

* added html lists

* updated user consent

* fixed comment

* update tr privacy text

* update privacy de & en

* added html lists

* updated user consent

* fixed comment

* Improve error message and add logic for future display of formatted error messages.

* Address PR review comments.

* QuotaCalculator V2

* Add extra logging for transaction and worker exceptions. (#1195) (EXPOSUREAPP-2640)

* Remove QuotaCalculation due to unexpected sideeffects. (#1196) (EXPOUSREAPP-2640)

* Fix klint/sourceCheck.

* Add test for first initialization.

* Add visibility modifier

* Simplify quota reset time calculation and extend tests for edge cases.

* Reduce impact of quota check to a warning for 1.4.
Add tests for silent quota check and configuration fallback behavior.

* Addressed PR comments.

We need to hook into `viewLifecycleOwner` not `lifeCycleOwner` otherwise the DataBinding is not correctly recreated whe fragments are reattached. (#1182)

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

Refactor MD5 extraction to be part of `DiagnosisKeyServer`'s responsibility.

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

Fix interop squash commit

This reverts commit 6054bf57.

* Added first set of country flags

Signed-off-by: Kolya Opahle <k.opahle@sap.com>

* Added first implementation of Submission Country Selection Screen. (Currently not part of nav graph).
Moved stuff inside of submission package into subpackages

Signed-off-by: Kolya Opahle <k.opahle@sap.com>

* Added missing changes to nav_graph file

* Test Menu options for Country selection and Measurement (EXPOSUREAPP-2229) (#1086)

* Implement country filter (#2229)

* Implement measure for Risk calculation and Key Retrieval (#2229)

* Some code cleanup for measureRiskLevelAndKeyRetrieval

* Some code cleanup (#2229)

* Implement usage of AppConfig usage for country codes (#2229)

* change CURRENT_COUNTRY val to var

* Suppress "LongMethod" warning (#2229)

* Adjust unit tests to respect new country filter

* Align with backend for app config country property name

* Display total file size of keys in results (#2229)

* Fix linting issue

* Update strings.xml files

* Do refactoring and some code clean up

* Move RiskLevel and Key retrieval measurement in own class

* Move code in logical classes. Remove translation in test fragment

* Fix linting and Unit tests

* Remove 3hour boolean check from debug class.

* Refactor CountryWrapper and missing dates check.

* Fix linting and Unit tests

* Add Unit test for getMissingDates

* Code cleanup

* Hide keyboard on action

* Extend statistics for api submission

* Set callback to null after invoked

Co-authored-by: Mert Safter <mert.safter@sap.com>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

* Overhaul of DiagnosisKey related Download and Caching Mechanisms (EXPOSUREAPP-2469) (#1136)

* Rework of keyfile download and caching.
* Supports interop
* More modular for better testing and build flavour based behavior adjustments
* More resilient handling of failed downloads
* Preperations for future hourly download and serverside checksums

TODO: Finish unit tests, keycache migration and cache health check

* First batch of unit tests and some fixes for incorrect behavior that the tests surfaced.

* Added unit tests for the KeyCacheRepository

TODO: Tests for downloader and migration.

* Implemented POC for migration old key files.

* Fixed legacy file migration and cleanup, improved logging.

* Added unit tests for legacy key file migration.

* Add fallback for different file hashes in the header.

* Yes kLint, we know it's a long method,
but for this it's better to read it in one block vs jumping to extra methods.

* More linting issues, adjusting project code style prevent a few of these in the future.

* Added missing unit tests for `KeyFileDownloader` and fixed faulty behavior that was noticed during testing.

* CRUD (instrumentation) test for `KeyCacheDatabase`

* Remove unused `FileStorageHelper` and related constants+tests.

* Fix last3Hours unit test in deviceRelease mode, we need to explicitly enable debug for these tests.

* Until we have more information about the hashsum's format in the header, default to `ETag

* Split app config server API from diagnosis key download API,
and reintroduce caching for the app config download.

* Add test to check that the cache is used on flaky connections.

* Code changes based on PR comment, part #1.

* Code fluff, formatting.

* Handle download errors correctly.

* Refactoring:
* Remove unnecessary `currentDate` we always start with the newest date from the servers index.
* Make a specialised class for header validation

* Let legacy cache migration abort early, depending on whether the key dir exists.

* If we can't create the base directory for the key repo, throw an exception.

* Delete cache entry if a download fails.

* Fixed test regression due to refactoring.

* Consolidate staleness check into `getStale`

* Consolidate clean up for failed downloads into the download method.
Added tests to check that we delete the keycache entry if the download fails (which we didn't for hours :O!)

* Because the hour-mode uses caching too, we add an explicit button to the test menu that clears the cache.

* Add comment with reference to ticket regarding follow up on the other headers.

* Move expected storage size per country into a named constant.

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

* Implementation of tests for the interoperability countries selection screen (EXPOSUREAPP-2439) (#1140)

* Added initial set of viewModel tests

Signed-off-by: Kolya Opahle <k.opahle@sap.com>

* Fail tests on unexpected null.

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>

Co-authored-by: Kolya Opahle <k.opahle@sap.com>
Co-authored-by: apopovsap <66370584+apopovsap@users.noreply.github.com>
Co-authored-by: Mert Safter <69803294+MertSafter@users.noreply.github.com>
Co-authored-by: Mert Safter <mert.safter@sap.com>
Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>
Co-authored-by: Matthias Urhahn <darken@darken.eu>

# Conflicts:
#	.idea/codeStyles/Project.xml
#	Corona-Warn-App/src/deviceForTesters/java/de/rki/coronawarnapp/test/TestRiskLevelCalculationFragment.kt
#	Corona-Warn-App/src/deviceForTesters/java/de/rki/coronawarnapp/test/api/ui/TestForAPIFragment.kt
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/ui/submission/fragment/SubmissionQRCodeScanFragment.kt
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/ui/submission/fragment/SubmissionResultPositiveOtherWarningFragment.kt
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/ui/submission/fragment/SubmissionTanFragment.kt
#	Corona-Warn-App/src/main/java/de/rki/coronawarnapp/util/di/ApplicationComponent.kt

Change-Id: I0fd634bcf90159c4af6ac4631754484ae6952ffb