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Merge pull request #9 from commandiron/1.0.0/actors-pading
actors-paging impl.
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3 changes: 2 additions & 1 deletion
3
app/src/main/java/com/commandiron/toprated10films/data/mapper/ActorMapper.kt
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40 changes: 40 additions & 0 deletions
40
app/src/main/java/com/commandiron/toprated10films/data/paging/ActorPagingSource.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| package com.commandiron.toprated10films.data.paging | ||
|
|
||
| import androidx.paging.PagingSource | ||
| import androidx.paging.PagingState | ||
| import com.commandiron.toprated10films.data.mapper.toActor | ||
| import com.commandiron.toprated10films.data.remote.MovieApi | ||
| import com.commandiron.toprated10films.domain.model.Actor | ||
|
|
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| class ActorPagingSource( | ||
| private val api: MovieApi | ||
| ) : PagingSource<Int, Actor>() { | ||
|
|
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| override suspend fun load(params: LoadParams<Int>): LoadResult<Int, Actor> { | ||
| val currentPage = params.key ?: 1 | ||
| return try { | ||
| val response = api.getActors(currentPage) | ||
| val endOfPaginationReached = response.page == response.total_pages | ||
| if (!endOfPaginationReached) { | ||
| LoadResult.Page( | ||
| data = response.movieDbActors.map { it.toActor() }, | ||
| prevKey = if (currentPage == 1) null else currentPage - 1, | ||
| nextKey = currentPage + 1 | ||
| ) | ||
| } else { | ||
| LoadResult.Page( | ||
| data = emptyList(), | ||
| prevKey = null, | ||
| nextKey = null | ||
| ) | ||
| } | ||
| } catch (e: Exception) { | ||
| LoadResult.Error(e) | ||
| } | ||
| } | ||
|
|
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| override fun getRefreshKey(state: PagingState<Int, Actor>): Int? { | ||
| return state.anchorPosition | ||
| } | ||
|
|
||
| } |
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7 changes: 7 additions & 0 deletions
7
app/src/main/java/com/commandiron/toprated10films/domain/model/Actor.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| package com.commandiron.toprated10films.domain.model | ||
|
|
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| data class Actor( | ||
| val id: Int, | ||
| val name: String, | ||
| val imageUrl: String | ||
| ) |
5 changes: 3 additions & 2 deletions
5
app/src/main/java/com/commandiron/toprated10films/domain/repository/AppRepository.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,13 @@ | ||
| package com.commandiron.toprated10films.domain.repository | ||
|
|
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| import androidx.paging.PagingData | ||
| import com.commandiron.toprated10films.domain.model.Genre | ||
| import com.commandiron.toprated10films.ui.model.Actor | ||
| import com.commandiron.toprated10films.domain.model.Actor | ||
| import com.commandiron.toprated10films.util.Response | ||
| import kotlinx.coroutines.flow.Flow | ||
|
|
||
| interface AppRepository { | ||
| suspend fun getGenres(): Flow<Response<List<Genre>>> | ||
| suspend fun saveGenres(genres: List<Genre>) | ||
| suspend fun getActors(page: Int): Flow<Response<List<Actor>>> | ||
| suspend fun getActors(): Flow<PagingData<Actor>> | ||
| } |
6 changes: 3 additions & 3 deletions
6
app/src/main/java/com/commandiron/toprated10films/domain/use_cases/GetActors.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,12 @@ | ||
| package com.commandiron.toprated10films.domain.use_cases | ||
|
|
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| import androidx.paging.PagingData | ||
| import com.commandiron.toprated10films.domain.repository.AppRepository | ||
| import com.commandiron.toprated10films.ui.model.Actor | ||
| import com.commandiron.toprated10films.util.Response | ||
| import com.commandiron.toprated10films.domain.model.Actor | ||
| import kotlinx.coroutines.flow.Flow | ||
|
|
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| class GetActors( | ||
| private val repository: AppRepository | ||
| ) { | ||
| suspend operator fun invoke(page: Int): Flow<Response<List<Actor>>> = repository.getActors(page) | ||
| suspend operator fun invoke(): Flow<PagingData<Actor>> = repository.getActors() | ||
| } |
35 changes: 0 additions & 35 deletions
35
app/src/main/java/com/commandiron/toprated10films/ui/model/Actor.kt
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52 changes: 52 additions & 0 deletions
52
...java/com/commandiron/toprated10films/ui/presentation/actor/components/LazyGridScopeExt.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package com.commandiron.toprated10films.ui.presentation.actor.components | ||
|
|
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| import android.annotation.SuppressLint | ||
| import android.os.Parcel | ||
| import android.os.Parcelable | ||
| import androidx.compose.foundation.lazy.grid.LazyGridItemScope | ||
| import androidx.compose.foundation.lazy.grid.LazyGridScope | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.paging.compose.LazyPagingItems | ||
|
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| fun <T : Any> LazyGridScope.items( | ||
| items: LazyPagingItems<T>, | ||
| key: ((item: T) -> Any)? = null, | ||
| itemContent: @Composable LazyGridItemScope.(item: T?) -> Unit | ||
| ) { | ||
| items( | ||
| count = items.itemCount, | ||
| key = if (key == null) null else { index -> | ||
| val item = items.peek(index) | ||
| if (item == null) { | ||
| PagingPlaceholderKey(index) | ||
| } else { | ||
| key(item) | ||
| } | ||
| } | ||
| ) { index -> | ||
| itemContent(items[index]) | ||
| } | ||
| } | ||
|
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| @SuppressLint("BanParcelableUsage") | ||
| private data class PagingPlaceholderKey(private val index: Int) : Parcelable { | ||
| override fun writeToParcel(parcel: Parcel, flags: Int) { | ||
| parcel.writeInt(index) | ||
| } | ||
|
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| override fun describeContents(): Int { | ||
| return 0 | ||
| } | ||
|
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| companion object { | ||
| @Suppress("unused") | ||
| @JvmField | ||
| val CREATOR: Parcelable.Creator<PagingPlaceholderKey> = | ||
| object : Parcelable.Creator<PagingPlaceholderKey> { | ||
| override fun createFromParcel(parcel: Parcel) = | ||
| PagingPlaceholderKey(parcel.readInt()) | ||
|
|
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| override fun newArray(size: Int) = arrayOfNulls<PagingPlaceholderKey?>(size) | ||
| } | ||
| } | ||
| } |
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