MVVM Refactor - Main UI #45
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,188 @@ | ||
| package com.greybox.projectmesh.mainscreen | ||
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| import android.content.SharedPreferences | ||
| import android.os.Build | ||
| import android.os.Environment | ||
| import android.util.Log | ||
| import androidx.lifecycle.ViewModel | ||
| import androidx.lifecycle.viewModelScope | ||
| import com.ustadmobile.meshrabiya.vnet.AndroidVirtualNode | ||
| import kotlinx.coroutines.flow.MutableStateFlow | ||
| import kotlinx.coroutines.flow.StateFlow | ||
| import kotlinx.coroutines.flow.asStateFlow | ||
| import kotlinx.coroutines.flow.update | ||
| import kotlinx.coroutines.launch | ||
| import org.kodein.di.DI | ||
| import org.kodein.di.instance | ||
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| class MainViewModel( | ||
| di: DI | ||
| ) : ViewModel() { | ||
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| // Inject dependencies | ||
| private val settingPrefs: SharedPreferences by di.instance(tag = "settings") | ||
| private val meshPrefs: SharedPreferences by di.instance(tag = "mesh") | ||
| private val node: AndroidVirtualNode by di.instance() | ||
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| // Private mutable state | ||
| private val _uiState = MutableStateFlow(MeshUiState()) | ||
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| // Public immutable state | ||
| val uiState: StateFlow<MeshUiState> = _uiState.asStateFlow() | ||
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| init { | ||
| Log.d(TAG, "MainViewModel initialized") | ||
| loadInitialState() | ||
| observeMeshNetwork() | ||
| } | ||
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| /** | ||
| * Load initial state from SharedPreferences | ||
| */ | ||
| private fun loadInitialState() { | ||
| viewModelScope.launch { | ||
| _uiState.update { state -> | ||
| state.copy( | ||
| deviceName = settingPrefs.getString("device_name", Build.MODEL) ?: Build.MODEL, | ||
| appTheme = settingPrefs.getString("app_theme", "SYSTEM") ?: "SYSTEM", | ||
| languageCode = settingPrefs.getString("language", "en") ?: "en", | ||
| autoFinish = settingPrefs.getBoolean("auto_finish", false), | ||
| saveToFolder = settingPrefs.getString("save_to_folder", null) | ||
| ?: "${Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)}/Project Mesh", | ||
| hasRunBefore = meshPrefs.getBoolean("hasRunBefore", false) | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
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| /** | ||
| * Observe mesh network state changes | ||
| */ | ||
| private fun observeMeshNetwork() { | ||
| viewModelScope.launch { | ||
| node.state.collect { nodeState -> | ||
| _uiState.update { state -> | ||
| state.copy( | ||
| wifiState = nodeState.wifiState, | ||
| localAddress = nodeState.address, | ||
| nodesOnMesh = nodeState.originatorMessages.keys, | ||
| connectedNodesCount = nodeState.originatorMessages.size, | ||
| isNetworkActive = nodeState.wifiState.hotspotIsStarted, | ||
| statusMessage = if (nodeState.wifiState.hotspotIsStarted) { | ||
| "Mesh active - ${nodeState.originatorMessages.size} nodes" | ||
| } else { | ||
| "Mesh network inactive" | ||
| } | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| /** | ||
| * Handle UI events | ||
| */ | ||
| fun onEvent(event: MeshUiEvent) { | ||
| when (event) { | ||
| is MeshUiEvent.StartMeshNetwork -> startMeshNetwork() | ||
| is MeshUiEvent.StopMeshNetwork -> stopMeshNetwork() | ||
| is MeshUiEvent.NavigateToScreen -> navigateToScreen(event.route) | ||
| is MeshUiEvent.NavigateToChat -> navigateToChat(event.identifier) | ||
| is MeshUiEvent.UpdateDeviceName -> updateDeviceName(event.name) | ||
| is MeshUiEvent.UpdateTheme -> updateTheme(event.theme) | ||
| is MeshUiEvent.UpdateLanguage -> updateLanguage(event.code) | ||
| is MeshUiEvent.PermissionsGranted -> handlePermissions(event.granted) | ||
| is MeshUiEvent.ClearError -> clearError() | ||
| is MeshUiEvent.CompleteOnboarding -> completeOnboarding() | ||
| } | ||
| } | ||
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| private fun startMeshNetwork() { | ||
| viewModelScope.launch { | ||
| try { | ||
| _uiState.update { it.copy(isLoading = true, statusMessage = "Starting mesh...") } | ||
| // Node starting happens automatically via observeMeshNetwork | ||
| Log.d(TAG, "Mesh network start requested") | ||
| } catch (e: Exception) { | ||
| Log.e(TAG, "Failed to start mesh", e) | ||
| _uiState.update { | ||
| it.copy( | ||
| isLoading = false, | ||
| error = "Failed to start mesh: ${e.message}" | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
Comment on lines
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to
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There was a problem hiding this comment. The If an action is required to start the network (e.g., calling a method on the If no action is needed, consider renaming the method and the corresponding UI event to better reflect what they do (e.g.,
Collaborator
Author
There was a problem hiding this comment. Right now, these methods don’t actually start or stop the mesh node. They just update the UI to show the status, while the real mesh state is handled through observeMeshNetwork(). Since there isn’t a direct start/stop call here yet, I’ve kept the behaviour as is for this PR. I can rename these methods later to make their purpose clearer if needed.
Collaborator
There was a problem hiding this comment. @Kteja03 Can you just add a comment to this function saying something about this function name being a bit misleading. |
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| private fun stopMeshNetwork() { | ||
| viewModelScope.launch { | ||
| try { | ||
| _uiState.update { it.copy(isLoading = true, statusMessage = "Stopping mesh...") } | ||
| // Node stopping happens automatically | ||
| Log.d(TAG, "Mesh network stop requested") | ||
| } catch (e: Exception) { | ||
| Log.e(TAG, "Failed to stop mesh", e) | ||
| _uiState.update { | ||
| it.copy( | ||
| isLoading = false, | ||
| error = "Failed to stop mesh: ${e.message}" | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| private fun navigateToScreen(route: String) { | ||
| _uiState.update { it.copy(currentScreen = route) } | ||
| Log.d(TAG, "Navigated to: $route") | ||
| } | ||
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| private fun navigateToChat(identifier: String) { | ||
| _uiState.update { | ||
| it.copy( | ||
| shouldNavigateToChat = identifier, | ||
| currentScreen = "chatScreen/$identifier" | ||
| ) | ||
| } | ||
| Log.d(TAG, "Navigating to chat: $identifier") | ||
| } | ||
|
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| private fun updateDeviceName(name: String) { | ||
| settingPrefs.edit().putString("device_name", name).apply() | ||
| _uiState.update { it.copy(deviceName = name) } | ||
| } | ||
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| private fun updateTheme(theme: String) { | ||
| settingPrefs.edit().putString("app_theme", theme).apply() | ||
| _uiState.update { it.copy(appTheme = theme) } | ||
| } | ||
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| private fun updateLanguage(code: String) { | ||
| settingPrefs.edit().putString("language", code).apply() | ||
| _uiState.update { it.copy(languageCode = code) } | ||
| } | ||
|
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| private fun handlePermissions(granted: Boolean) { | ||
| _uiState.update { | ||
| it.copy( | ||
| hasAllPermissions = granted, | ||
| permissionsRequested = true, | ||
| error = if (!granted) "Some permissions were denied" else null | ||
| ) | ||
| } | ||
| } | ||
|
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| private fun clearError() { | ||
| _uiState.update { it.copy(error = null) } | ||
| } | ||
|
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| private fun completeOnboarding() { | ||
| meshPrefs.edit().putBoolean("hasRunBefore", true).apply() | ||
| _uiState.update { it.copy(hasRunBefore = true, showOnboarding = false) } | ||
| } | ||
|
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| companion object { | ||
| private const val TAG = "MainViewModel" | ||
| } | ||
| } | ||
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