SCRUM-260 feature: save user data

app/build.gradle.kts

@@ -5,6 +5,7 @@ plugins {
     alias(libs.plugins.kotlin.android)
     alias(libs.plugins.kotlin.compose)
     alias(libs.plugins.ksp)
+    alias(libs.plugins.hilt)
     alias(libs.plugins.detekt)
 }
 
@@ -91,6 +92,9 @@ dependencies {
 //    time (kotlinx.datetime)
     implementation(libs.kotlinx.datetime)
 
+//    DataStore
+    implementation(libs.androidx.datastore.preferences)
+
     // detekt plugins
     detektPlugins(libs.detekt.formatting)
     detektPlugins(libs.detekt.compose)

app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
 
     <application
+            android:name=".FeelinApplication"
             android:allowBackup="true"
             android:dataExtractionRules="@xml/data_extraction_rules"
             android:fullBackupContent="@xml/backup_rules"

app/src/main/java/com/lyrics/feelin/FeelinApplication.kt

@@ -0,0 +1,7 @@
+package com.lyrics.feelin
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class FeelinApplication : Application()

app/src/main/java/com/lyrics/feelin/MainActivity.kt

@@ -6,7 +6,9 @@ import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import com.lyrics.feelin.navigation.FeelinNavHost
 import com.lyrics.feelin.presentation.designsystem.theme.FeelinTheme
+import dagger.hilt.android.AndroidEntryPoint
 
+@AndroidEntryPoint
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)

app/src/main/java/com/lyrics/feelin/core/data/datasource/local/UserPreferencesDataStore.kt

@@ -0,0 +1,77 @@
+package com.lyrics.feelin.core.data.datasource.local
+
+import android.content.Context
+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 dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+import javax.inject.Singleton
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+
+private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "user_preferences")
+
+@Singleton
+class UserPreferencesDataStore @Inject constructor(
+    @ApplicationContext private val context: Context
+) {
+    private object Keys {
+        val GENDER = stringPreferencesKey("gender")
+        val BIRTH_YEAR = intPreferencesKey("birth_year")
+        val NICKNAME = stringPreferencesKey("nickname")
+        val PROFILE_INDEX = intPreferencesKey("profile_index")
+        val IS_LOGGED_IN = stringPreferencesKey("is_logged_in")
+    }
+
+    val userData: Flow<UserData> = context.dataStore.data.map { preferences ->
+        UserData(
+            gender = preferences[Keys.GENDER],
+            birthYear = preferences[Keys.BIRTH_YEAR],
+            nickname = preferences[Keys.NICKNAME],
+            profileIndex = preferences[Keys.PROFILE_INDEX],
+            isLoggedIn = preferences[Keys.IS_LOGGED_IN] == "true"
+        )
+    }
+
+    val isLoggedIn: Flow<Boolean> = context.dataStore.data.map { preferences ->
+        preferences[Keys.IS_LOGGED_IN] == "true"
+    }
+
+    suspend fun saveGenderAndBirthYear(gender: String, birthYear: Int) {
+        context.dataStore.edit { preferences ->
+            preferences[Keys.GENDER] = gender
+            preferences[Keys.BIRTH_YEAR] = birthYear
+        }
+    }
+
+    suspend fun saveProfile(nickname: String, profileIndex: Int) {
+        context.dataStore.edit { preferences ->
+            preferences[Keys.NICKNAME] = nickname
+            preferences[Keys.PROFILE_INDEX] = profileIndex
+        }
+    }
+
+    suspend fun completeOnboarding() {
+        context.dataStore.edit { preferences ->
+            preferences[Keys.IS_LOGGED_IN] = "true"
+        }
+    }
+
+    suspend fun logout() {
+        context.dataStore.edit { preferences ->
+            preferences.clear()
+        }
+    }
+}
+
+data class UserData(
+    val gender: String? = null,
+    val birthYear: Int? = null,
+    val nickname: String? = null,
+    val profileIndex: Int? = null,
+    val isLoggedIn: Boolean = false
+)

app/src/main/java/com/lyrics/feelin/navigation/FeelinDestination.kt

@@ -3,15 +3,19 @@ package com.lyrics.feelin.navigation
 sealed class FeelinDestination(
     val route: String,
 ) {
-    object Home : FeelinDestination(route = "home")
-
-    object NoteSearch : FeelinDestination(route = "note_search")
-
-    object MyPage : FeelinDestination(route = "my_page")
+    // Navigation Graph Routes
+    object OnboardingGraph : FeelinDestination(route = "onboarding_graph")
+    object MainGraph : FeelinDestination(route = "main_graph")
 
+    // Onboarding Flow
     object Login : FeelinDestination(route = "login")
-
     object OnboardingTerms : FeelinDestination(route = "onboarding_terms")
-
     object OnboardingGenderAge : FeelinDestination(route = "onboarding_gender_age")
+    object OnboardingProfile : FeelinDestination(route = "onboarding_profile")
+    object OnboardingWelcome : FeelinDestination(route = "onboarding_welcome")
+
+    // Main Flow (with Bottom Navigation)
+    object Home : FeelinDestination(route = "home")
+    object NoteSearch : FeelinDestination(route = "note_search")
+    object MyPage : FeelinDestination(route = "my_page")
 }