fix: integrate LoginUseCase into UserUseCase

android/app/build.gradle.kts

@@ -87,6 +87,9 @@ dependencies {
     // navigation
     implementation("androidx.navigation:navigation-compose:2.5.3")
 
+    // navigation with hilt
+    implementation("androidx.hilt:hilt-navigation-compose:1.0.0")
+
     // Retrofit
     implementation("com.squareup.retrofit2:retrofit:2.9.0")
     implementation("com.squareup.retrofit2:converter-gson:2.9.0")

android/app/src/main/java/com/goliath/emojihub/models/User.kt

@@ -6,12 +6,16 @@ import com.google.gson.annotations.SerializedName
 class User(
     dto: UserDto
 ) {
+    var token: String = dto.token
     var likedEmojiList: Array<String> = dto.likedEmojiList
     var createdEmojiList: Array<String> = dto.createdEmojiList
     val userId: String = dto.userId
 }
 
 class UserDto(
+    @SerializedName("token")
+    val token: String,
+
     @SerializedName("user_id")
     val userId: String,
 
@@ -20,4 +24,11 @@ class UserDto(
 
     @SerializedName("created_emoji_list")
     val createdEmojiList: Array<String>
-)
+)
+
+val dummyUser = User(UserDto(
+    token = "dummy",
+    userId = "1",
+    likedEmojiList = arrayOf(),
+    createdEmojiList = arrayOf()
+))

android/app/src/main/java/com/goliath/emojihub/repositories/RepositoryModule.kt

@@ -0,0 +1,15 @@
+package com.goliath.emojihub.repositories
+
+import com.goliath.emojihub.repositories.remote.UserRepository
+import com.goliath.emojihub.repositories.remote.UserRepositoryImpl
+import dagger.Binds
+import dagger.Module
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+
+@InstallIn(SingletonComponent::class)
+@Module
+abstract class RepositoryModule {
+    @Binds
+    abstract fun bindsUserRepository(impl: UserRepositoryImpl): UserRepository
+}

android/app/src/main/java/com/goliath/emojihub/usecases/UserUseCase.kt

@@ -1,9 +1,16 @@
 package com.goliath.emojihub.usecases
 
+import com.goliath.emojihub.models.User
+import com.goliath.emojihub.models.dummyUser
 import com.goliath.emojihub.repositories.remote.UserRepository
+import com.goliath.emojihub.viewmodels.Resource
+import kotlinx.coroutines.flow.MutableStateFlow
+import javax.inject.Inject
+import javax.inject.Singleton
 
 sealed interface UserUseCase {
     fun fetchUser(id: String)
+    fun registerUser(id: String, password: String): User
 }
 
 class UserUseCaseImpl (
@@ -12,4 +19,8 @@ class UserUseCaseImpl (
     override fun fetchUser(id: String) {
         repository.fetchUser(id)
     }
+
+    override fun registerUser(id: String, password: String): User {
+        return dummyUser
+    }
 }

android/app/src/main/java/com/goliath/emojihub/viewmodels/LoginViewModel.kt

@@ -3,25 +3,22 @@ package com.goliath.emojihub.viewmodels
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
-import androidx.lifecycle.viewModelScope
 import com.goliath.emojihub.models.User
-import com.goliath.emojihub.usecases.LoginUseCase
-import dagger.hilt.android.lifecycle.HiltViewModel
-import kotlinx.coroutines.launch
-import javax.inject.Inject
+import com.goliath.emojihub.models.dummyUser
+import com.goliath.emojihub.usecases.UserUseCase
+import kotlinx.coroutines.flow.MutableStateFlow
 
-@HiltViewModel
-class LoginViewModel @Inject constructor(
-    private val loginUseCase: LoginUseCase
-) {
-
-    private val _loginState = MutableLiveData<Resource<User>>()
-    val loginState: LiveData<Resource<User>> = _loginState
-
-    fun onLoginClicked(username: String, password: String) {
-            _loginState.value = loginUseCase.login(username, password)  // Hand
-    }
-}
+//class LoginViewModel(
+//    private val userUseCase: UserUseCase
+//): ViewModel() {
+//
+//    private val _loginState = MutableStateFlow(Resource.Success(dummyUser))
+//    val loginState = _loginState
+//
+//    fun registerUser(username: String, password: String) {
+//        _loginState.value = userUseCase.registerUser(username, password)  // Hand
+//    }
+//}
 
 sealed class Resource<out T> {
     object Loading : Resource<Nothing>()

android/app/src/main/java/com/goliath/emojihub/viewmodels/UserViewModel.kt

@@ -1,12 +1,27 @@
 package com.goliath.emojihub.viewmodels
 
 import androidx.lifecycle.ViewModel
+import com.goliath.emojihub.models.User
 import com.goliath.emojihub.usecases.UserUseCase
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import javax.inject.Inject
+
 
 class UserViewModel (
-    private val useCase: UserUseCase
+    private val userUseCase: UserUseCase
 ): ViewModel() {
+
+    private val _loginState = MutableStateFlow<User?>(null)
+    val loginState = _loginState.asStateFlow()
+
     fun fetchUser(id: String) {
-        useCase.fetchUser(id)
+        userUseCase.fetchUser(id)
+    }
+
+    fun registerUser(username: String, password: String) {
+        _loginState.update { userUseCase.registerUser(username, password) }
     }
 }