datastore fixed

app/src/main/java/com/example/nto_minipigs/MainActivity.kt

@@ -9,10 +9,12 @@ import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.datastore.core.DataStore
 import androidx.datastore.preferences.core.Preferences
 import androidx.datastore.preferences.core.edit
 import androidx.datastore.preferences.core.intPreferencesKey
+import androidx.datastore.preferences.core.stringPreferencesKey
 import androidx.datastore.preferences.preferencesDataStore
 import androidx.lifecycle.ViewModelProvider
 import androidx.navigation.compose.NavHost
@@ -25,23 +27,16 @@ import kotlinx.coroutines.flow.map
 import kotlinx.serialization.Serializable
 
 class MainActivity : ComponentActivity() {
-    val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "settings")
-    val context = applicationContext
-
-    val EXAMPLE_COUNTER = intPreferencesKey("example_counter")
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        val exampleCounterFlow: Flow<Int> = context.dataStore.data
-            .map { preferences ->
-                // No type safety.
-                preferences[EXAMPLE_COUNTER] ?: 0
-            }
-
         enableEdgeToEdge()
         setContent {
             Nto_minipigsTheme {
+                val dataStore = remember {
+                    UserData(this)
+                }
                 val navController = rememberNavController()
                 val loginViewModel = ViewModelProvider(this)[LoginViewModel::class.java]
 
@@ -57,6 +52,23 @@ class MainActivity : ComponentActivity() {
     }
 }
 
+class UserData(private val context: Context) {
+    val Context.dataStore by preferencesDataStore("user_data")
+
+    val token = context.dataStore.data.map { preferences ->
+        preferences[tokenKey]
+    }
+
+    suspend fun updateName(data:String) =
+        context.dataStore.edit { settings ->
+            settings[tokenKey] = data
+        }
+
+    companion object {
+        val tokenKey = stringPreferencesKey("Bearer")
+    }
+}
+
 @Serializable
 object Login