feat(content): 전체보기 ViewModel을 추가한다

2026-06-27 08:29:44 +09:00
parent 0a4b88fabe
commit 0134942172
2 changed files with 439 additions and 0 deletions
--- a/app/src/main/java/kr/co/vividnext/sodalive/v2/main/content/overview/ContentOverviewViewModel.kt
+++ b/app/src/main/java/kr/co/vividnext/sodalive/v2/main/content/overview/ContentOverviewViewModel.kt
@@ -0,0 +1,146 @@
+package kr.co.vividnext.sodalive.v2.main.content.overview
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import com.orhanobut.logger.Logger
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.schedulers.Schedulers
+import kr.co.vividnext.sodalive.R
+import kr.co.vividnext.sodalive.base.BaseViewModel
+import kr.co.vividnext.sodalive.common.ApiResponse
+import kr.co.vividnext.sodalive.common.SharedPreferenceManager
+import kr.co.vividnext.sodalive.common.ToastMessage
+import kr.co.vividnext.sodalive.v2.main.content.overview.data.ContentOverviewPageResponse
+import kr.co.vividnext.sodalive.v2.main.content.overview.data.ContentOverviewRepository
+import kr.co.vividnext.sodalive.v2.main.content.overview.data.ContentOverviewType
+import kr.co.vividnext.sodalive.v2.main.content.overview.model.ContentOverviewUiState
+import kr.co.vividnext.sodalive.v2.main.content.overview.model.toContent
+
+class ContentOverviewViewModel(
+    private val repository: ContentOverviewRepository
+) : BaseViewModel() {
+
+    private val _overviewStateLiveData = MutableLiveData<ContentOverviewUiState>()
+    val overviewStateLiveData: LiveData<ContentOverviewUiState>
+        get() = _overviewStateLiveData
+
+    private val _isLoading = MutableLiveData(false)
+    val isLoading: LiveData<Boolean>
+        get() = _isLoading
+
+    private val _toastLiveData = MutableLiveData<ToastMessage?>()
+    val toastLiveData: LiveData<ToastMessage?>
+        get() = _toastLiveData
+
+    private var selectedType: ContentOverviewType = ContentOverviewType.NEW_AND_HOT_AUDIO
+    private var requestGeneration: Int = 0
+
+    fun loadFirstPage(type: ContentOverviewType) {
+        selectedType = type
+        val generation = ++requestGeneration
+        _isLoading.value = true
+        _overviewStateLiveData.value = ContentOverviewUiState.Loading(type)
+        requestContents(type, FIRST_PAGE, generation) { response ->
+            _isLoading.value = false
+            val data = response.data
+            if (response.success && data != null) {
+                val content = data.toContent()
+                _overviewStateLiveData.value = if (content.items.isEmpty()) {
+                    ContentOverviewUiState.Empty(content.type, content.totalCount)
+                } else {
+                    content
+                }
+            } else {
+                showFirstPageError(type, response.message)
+            }
+        }
+    }
+
+    fun loadMore() {
+        val content = _overviewStateLiveData.value as? ContentOverviewUiState.Content ?: return
+        if (!content.hasNext || content.isLoadingMore) return
+
+        val generation = requestGeneration
+        _overviewStateLiveData.value = content.copy(isLoadingMore = true, paginationErrorMessage = null)
+        requestContents(content.type, content.page + 1, generation) { response ->
+            val current = _overviewStateLiveData.value as? ContentOverviewUiState.Content ?: content
+            val data = response.data
+            if (response.success && data != null) {
+                val mapped = data.toContent()
+                _overviewStateLiveData.value = current.copy(
+                    type = mapped.type,
+                    totalCount = mapped.totalCount,
+                    items = current.items + mapped.items,
+                    page = mapped.page,
+                    size = mapped.size,
+                    hasNext = mapped.hasNext,
+                    isLoadingMore = false,
+                    paginationErrorMessage = null
+                )
+            } else {
+                _overviewStateLiveData.value = current.copy(
+                    isLoadingMore = false,
+                    paginationErrorMessage = response.message
+                )
+            }
+        }
+    }
+
+    fun retry() {
+        loadFirstPage(selectedType)
+    }
+
+    fun consumePaginationErrorMessage() {
+        val content = _overviewStateLiveData.value as? ContentOverviewUiState.Content ?: return
+        if (content.paginationErrorMessage == null) return
+
+        _overviewStateLiveData.value = content.copy(paginationErrorMessage = null)
+    }
+
+    private fun requestContents(
+        type: ContentOverviewType,
+        page: Int,
+        generation: Int,
+        onSuccess: (ApiResponse<ContentOverviewPageResponse>) -> Unit
+    ) {
+        compositeDisposable.add(
+            repository.getContents(authToken(), page, DEFAULT_PAGE_SIZE, type)
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(
+                    {
+                        if (generation == requestGeneration) {
+                            onSuccess(it)
+                        }
+                    },
+                    {
+                        if (generation != requestGeneration) return@subscribe
+
+                        it.message?.let { message -> Logger.e(message) }
+                        _isLoading.value = false
+                        val current = _overviewStateLiveData.value as? ContentOverviewUiState.Content
+                        if (current != null && page > FIRST_PAGE) {
+                            _overviewStateLiveData.value = current.copy(
+                                isLoadingMore = false,
+                                paginationErrorMessage = it.message
+                            )
+                        } else {
+                            showFirstPageError(type, it.message)
+                        }
+                    }
+                )
+        )
+    }
+
+    private fun showFirstPageError(type: ContentOverviewType, message: String?) {
+        _overviewStateLiveData.value = ContentOverviewUiState.Error(type, message)
+        _toastLiveData.value = ToastMessage(resId = R.string.common_error_unknown)
+    }
+
+    private fun authToken(): String = "Bearer ${SharedPreferenceManager.token}"
+
+    companion object {
+        const val DEFAULT_PAGE_SIZE = 20
+        private const val FIRST_PAGE = 0
+    }
+}