Create a generic utility for filtering enums

[anandwana001]

Is your feature request related to a problem? Please describe. Currently, in all our enum files, we usually use similar items filtering.

Some examples of filtering include: https://github.com/oppia/oppia-android/blob/d0c8b81566c956c6edf6a7c19c14f8c8391dd939/app/src/main/java/org/oppia/android/app/survey/surveyitemviewmodel/UserTypeItemsViewModel.kt#L146

https://github.com/oppia/oppia-android/blob/d0c8b81566c956c6edf6a7c19c14f8c8391dd939/domain/src/main/java/org/oppia/android/domain/oppialogger/analytics/PerformanceMetricsController.kt#L132

https://github.com/oppia/oppia-android/blob/d0c8b81566c956c6edf6a7c19c14f8c8391dd939/app/src/main/java/org/oppia/android/app/topic/lessons/TopicLessonsFragmentPresenter.kt#L162

Describe the solution you'd like Generalize filtering which can be used by all the enum.

Describe alternatives you've considered

interface EnumWithKey<T : Enum<T>, K> {
  val T.key: K
}
inline fun <reified T : Enum<T>, K> EnumWithKey<T, K>.getValue(key: K): T {
  return enumValues<T>().find { it.key == key }
    ?: throw IllegalStateException("In the enum ${T::class.java} " +
      "there should be at least one enumeration")
}

Additional context Look here for learning purpose - https://gist.github.com/programmerr47/e1a62f912c735249c89c3f5c44b6b366#file-enum-kt

[whyash8]

I want to work on this issue.

[adhiamboperes]

@whyash8, Please feel free to put up a draft PR with a solution.

[whyash8]

Ok sir

[whyash8]

i have found a solution for the issue and i need some guidance. please help!

[adhiamboperes]

Hi @whyash8, please let us know how we can help. What challenge are you experiencing?

[whyash8]

i made some changes in the code. Now i need help in testing the changes. Please help

[adhiamboperes]

@whyash8, could you please create a PR with the code changes so that we can better help with the required tests?

[whyash8]

Ok

[whyash8]

I am getting this issues while pushing Error: Invalid or corrupt jarfile ../oppia-android-tools/ktlint

---

Ktlint issue found. Please help !!

[adhiamboperes]

Hi @whyash8, go to your project folder > oppia-android-tools > delete the ktlint file. Then on you terminal inside the project root, run bash setup.sh again. Should this not resolve your issue, please use the discussions tab to share more details on the issue with a screenshot of the error.

[whyash8]

Ok! thank you

[whyash8]

i made a PR . please help me to proceed further.