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refactor: extract paging helpers

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2026-05-14 18:01:38 +03:00
parent d91b726b9d
commit 2e472733d9
6 changed files with 114 additions and 75 deletions
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feature/createchat/src/main/kotlin/dev/meloda/fast/convos/CreateChatViewModel.kt
+20 -18
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@@ -7,6 +7,10 @@ import coil.ImageLoader
import coil.request.ImageRequest
import dev.meloda.fast.common.extensions.listenValue
import dev.meloda.fast.common.extensions.setValue
import dev.meloda.fast.common.paging.canPaginate as canPaginatePage
import dev.meloda.fast.common.paging.isPaginationExhausted as isPaginationExhaustedPage
import dev.meloda.fast.common.paging.loadingFlags
import dev.meloda.fast.common.paging.mergePage
import dev.meloda.fast.convos.model.CreateChatScreenState
import dev.meloda.fast.data.State
import dev.meloda.fast.data.UserConfig
@@ -154,13 +158,16 @@ class CreateChatViewModel(
friendsUseCase.getFriends(count = LOAD_COUNT, offset = offset)
.listenValue(viewModelScope) { state ->
state.processState(
error = ::handleError,
success = { response ->
val itemsCountSufficient = response.size == LOAD_COUNT
_canPaginate.setValue { itemsCountSufficient }
error = ::handleError,
success = { response ->
val itemsCountSufficient = canPaginatePage(LOAD_COUNT, response.size)
_canPaginate.setValue { itemsCountSufficient }
val paginationExhausted = !itemsCountSufficient &&
screenState.value.friends.isNotEmpty()
val paginationExhausted = isPaginationExhaustedPage(
pageSize = LOAD_COUNT,
loadedCount = response.size,
hasExistingItems = screenState.value.friends.isNotEmpty()
)
val imagesToPreload =
response.mapNotNull { it.photo100.takeIf { p -> !p.isNullOrEmpty() } }
@@ -182,24 +189,19 @@ class CreateChatViewModel(
val newState = screenState.value.copy(
isPaginationExhausted = paginationExhausted
)
if (offset == 0) {
_screenState.setValue {
newState.copy(friends = loadedFriends)
}
} else {
_screenState.setValue {
newState.copy(
friends = newState.friends.plus(loadedFriends)
)
}
_screenState.setValue {
newState.copy(
friends = mergePage(newState.friends, loadedFriends, offset)
)
}
}
)
val flags = loadingFlags(offset, state.isLoading())
_screenState.setValue { old ->
old.copy(
isLoading = offset == 0 && state.isLoading(),
isPaginating = offset > 0 && state.isLoading()
isLoading = flags.isLoading,
isPaginating = flags.isPaginating
)
}
}