feat(ui): add StationsScreen and StationsViewModel

2026-06-01 13:00:12 +03:00
parent 116ab95abd
commit 1c902b5607
2 changed files with 149 additions and 0 deletions
--- a/app/src/main/java/com/radiola/ui/stations/StationsViewModel.kt
+++ b/app/src/main/java/com/radiola/ui/stations/StationsViewModel.kt
@@ -0,0 +1,72 @@
+package com.radiola.ui.stations
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.radiola.domain.model.Station
+import com.radiola.domain.usecase.GetStationsUseCase
+import com.radiola.domain.usecase.PlayStationUseCase
+import com.radiola.domain.usecase.ToggleFavoriteUseCase
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class StationsViewModel @Inject constructor(
+    private val getStationsUseCase: GetStationsUseCase,
+    private val playStationUseCase: PlayStationUseCase,
+    private val toggleFavoriteUseCase: ToggleFavoriteUseCase
+) : ViewModel() {
+
+    private val _searchQuery = MutableStateFlow("")
+    val searchQuery: StateFlow<String> = _searchQuery.asStateFlow()
+
+    private val _selectedTag = MutableStateFlow<String?>(null)
+    val selectedTag: StateFlow<String?> = _selectedTag.asStateFlow()
+
+    private val _isLoading = MutableStateFlow(false)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    private val _error = MutableStateFlow<String?>(null)
+    val error: StateFlow<String?> = _error.asStateFlow()
+
+    val stations: StateFlow<List<Station>> = combine(
+        getStationsUseCase(),
+        _searchQuery,
+        _selectedTag
+    ) { allStations, query, tag ->
+        allStations
+            .filter { station ->
+                tag == null || station.tags.contains(tag) || station.genre.equals(tag, ignoreCase = true)
+            }
+            .filter { station ->
+                query.isBlank() ||
+                station.name.contains(query, ignoreCase = true) ||
+                station.genre.contains(query, ignoreCase = true)
+            }
+    }.stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), emptyList())
+
+    val tags: StateFlow<List<String>> = getStationsUseCase()
+        .map { stations -> stations.flatMap { it.tags }.distinct().sorted() }
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), emptyList())
+
+    fun onSearchQueryChange(query: String) {
+        _searchQuery.value = query
+    }
+
+    fun onTagSelected(tag: String?) {
+        _selectedTag.value = tag
+    }
+
+    fun playStation(station: Station) {
+        viewModelScope.launch {
+            playStationUseCase(station)
+        }
+    }
+
+    fun toggleFavorite(station: Station) {
+        viewModelScope.launch {
+            toggleFavoriteUseCase(station)
+        }
+    }
+}