feat/#14: SignIn MVI 적용

app/src/main/java/org/sopt/and/presentation/signin/SignInScreen.kt

@@ -40,7 +40,9 @@ import org.sopt.and.core.extension.showWavveSnackBar
 import org.sopt.and.core.extension.toast
 import org.sopt.and.core.preference.PreferenceUtil.Companion.LocalPreference
 import org.sopt.and.presentation.signin.component.SignInExtraServiceGroup
-import org.sopt.and.presentation.signin.state.SignInUiState
+import org.sopt.and.presentation.signin.contract.SignInEvent
+import org.sopt.and.presentation.signin.contract.SignInSideEffect
+import org.sopt.and.presentation.signin.contract.SignInUiState
 
 @Composable
 fun SignInRoute(
@@ -61,14 +63,16 @@ fun SignInRoute(
         viewModel.sideEffect.flowWithLifecycle(lifecycle = lifecycleOwner.lifecycle)
             .collect { sideEffect ->
                 when (sideEffect) {
-                    is SignInSideEffect.Toast -> context.toast(
-                        context.getString(sideEffect.message)
-                    )
+                    is SignInSideEffect.ShowToast -> {
+                        context.toast(sideEffect.message)
+                    }
 
-                    is SignInSideEffect.SnackBar -> snackBarHost.showWavveSnackBar(
-                        context = context,
-                        message = sideEffect.message
-                    )
+                    is SignInSideEffect.ShowSnackBar -> {
+                        snackBarHost.showWavveSnackBar(
+                            context = context,
+                            message = sideEffect.message
+                        )
+                    }
 
                     is SignInSideEffect.NavigateToHome -> {
                         with(preference) {
@@ -88,10 +92,18 @@ fun SignInRoute(
     SignInScreen(
         uiState = uiState,
         snackBarHost = snackBarHost,
-        onIdChange = viewModel::updateId,
-        onPasswordChange = viewModel::updatePassword,
-        onLoginClick = viewModel::onSignInButtonClick,
-        onSignUpClick = viewModel::onSignUpButtonClick,
+        onIdChange = { newValue ->
+            viewModel.setEvent(SignInEvent.OnIdTextFieldChanged(newValue))
+        },
+        onPasswordChange = { newValue ->
+            viewModel.setEvent(SignInEvent.OnPasswordTextFieldChanged(newValue))
+        },
+        onLoginClick = {
+            viewModel.setEvent(SignInEvent.OnSignInButtonClicked)
+        },
+        onSignUpClick = {
+            viewModel.setEvent(SignInEvent.OnSignUpButtonClicked)
+        },
         modifier = modifier
     )
 }

app/src/main/java/org/sopt/and/presentation/signin/SignInViewModel.kt

@@ -1,55 +1,57 @@
 package org.sopt.and.presentation.signin
 
-import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
-import kotlinx.coroutines.flow.MutableSharedFlow
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.asSharedFlow
-import kotlinx.coroutines.flow.asStateFlow
-import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
+import org.sopt.and.core.viewmodel.BaseViewModel
 import org.sopt.and.domain.entity.User
 import org.sopt.and.domain.usecase.SignInUseCase
-import org.sopt.and.presentation.signin.state.SignInUiState
+import org.sopt.and.presentation.signin.contract.SignInEvent
+import org.sopt.and.presentation.signin.contract.SignInSideEffect
+import org.sopt.and.presentation.signin.contract.SignInUiState
 import javax.inject.Inject
 
 @HiltViewModel
 class SignInViewModel @Inject constructor(
     private val signInUseCase: SignInUseCase
-) : ViewModel() {
-    private var _uiState = MutableStateFlow(SignInUiState())
-    val uiState = _uiState.asStateFlow()
+) : BaseViewModel<SignInUiState, SignInSideEffect, SignInEvent>() {
 
-    private var _sideEffect = MutableSharedFlow<SignInSideEffect>()
-    val sideEffect = _sideEffect.asSharedFlow()
+    override fun createInitialState(): SignInUiState = SignInUiState()
 
-    fun updateId(id: String) = _uiState.update { currentState ->
-        currentState.copy(
-            id = id
-        )
-    }
+    override suspend fun handleEvent(event: SignInEvent) {
+        when (event) {
+            is SignInEvent.OnIdTextFieldChanged -> {
+                setState { copy(id = event.id) }
+            }
+
+            is SignInEvent.OnPasswordTextFieldChanged -> {
+                setState { copy(password = event.password) }
+            }
 
-    fun updatePassword(password: String) = _uiState.update { currentState ->
-        currentState.copy(
-            password = password
-        )
+            SignInEvent.OnSignInButtonClicked -> {
+                postSignIn()
+            }
+
+            SignInEvent.OnSignUpButtonClicked -> {
+                navigateToSignUp()
+            }
+        }
     }
 
-    fun onSignUpButtonClick() {
+    private fun navigateToSignUp() {
         viewModelScope.launch {
-            _sideEffect.emit(SignInSideEffect.NavigateToSignUp)
+            setSideEffect(SignInSideEffect.NavigateToSignUp)
         }
     }
 
-    fun onSignInButtonClick() = viewModelScope.launch {
-        val user = with(_uiState.value) { User(id, password, "") }
+    private fun postSignIn() = viewModelScope.launch {
+        val user = with(currentState) { User(id, password, "") }
         signInUseCase.invoke(user).onSuccess { response ->
             response.token?.run {
-                _sideEffect.emit(SignInSideEffect.NavigateToHome(this))
+                setSideEffect(SignInSideEffect.NavigateToHome(this))
             }
         }.onFailure { throwable ->
-            _sideEffect.emit(SignInSideEffect.SnackBar(throwable.message.orEmpty()))
+            setSideEffect(SignInSideEffect.ShowSnackBar(throwable.message.orEmpty()))
         }
     }
 }

app/src/main/java/org/sopt/and/presentation/signin/contract/SignInEvent.kt

@@ -0,0 +1,10 @@
+package org.sopt.and.presentation.signin.contract
+
+import org.sopt.and.core.viewmodel.UiEvent
+
+sealed class SignInEvent: UiEvent {
+    data class OnIdTextFieldChanged(val id: String): SignInEvent()
+    data class OnPasswordTextFieldChanged(val password: String): SignInEvent()
+    data object OnSignInButtonClicked: SignInEvent()
+    data object OnSignUpButtonClicked: SignInEvent()
+}

app/src/main/java/org/sopt/and/presentation/signin/contract/SignInSideEffect.kt

@@ -0,0 +1,10 @@
+package org.sopt.and.presentation.signin.contract
+
+import org.sopt.and.core.viewmodel.UiSideEffect
+
+sealed interface SignInSideEffect: UiSideEffect {
+    data class ShowToast(val message: String) : SignInSideEffect
+    data class ShowSnackBar(val message: String) : SignInSideEffect
+    data class NavigateToHome(val token: String) : SignInSideEffect
+    data object NavigateToSignUp : SignInSideEffect
+}

app/src/main/java/org/sopt/and/presentation/signin/contract/SignInUiState.kt

@@ -0,0 +1,9 @@
+package org.sopt.and.presentation.signin.contract
+
+import org.sopt.and.core.viewmodel.UiState
+
+
+data class SignInUiState(
+    val id: String = "",
+    val password: String = ""
+): UiState