Additional logic for the login form

app/app/src/main/java/software/makeshift/debtpirate/MainActivity.kt

@@ -27,10 +27,7 @@ class MainActivity : ComponentActivity() {
                 NavHost(navController = navController, startDestination = LoginRoute) {
                     composable<LoginRoute> {
                         val viewModel: LoginScreenViewModel by viewModels()
-                        LoginScreen(
-                            viewModel.loginState,
-                            viewModel::updateLoginUsername
-                        )
+                        LoginScreen(viewModel)
                     }
                 }
             }

app/app/src/main/java/software/makeshift/debtpirate/usecases/login/LoginScreen.kt

@@ -10,10 +10,13 @@ import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.imePadding
 import androidx.compose.foundation.pager.HorizontalPager
 import androidx.compose.foundation.pager.rememberPagerState
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.Button
 import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.SecondaryTabRow
 import androidx.compose.material3.Tab
@@ -23,15 +26,17 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.unit.dp
-import kotlinx.coroutines.flow.StateFlow
 import software.makeshift.debtpirate.R
 
 @SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
 @Composable
 fun LoginScreen(
-    loginState: StateFlow<LoginState>,
-    updateLoginUsername: (String) -> Unit
+    viewModel: LoginScreenViewModel
 ) {
     Scaffold(modifier = Modifier.fillMaxSize()) {
         Column {
@@ -42,7 +47,9 @@ fun LoginScreen(
             )
 
             LoginAndSignUpForms(
-                loginState,
+                loginState = viewModel.loginState,
+                onUsernameUpdate = viewModel::updateLoginUsername,
+                onPasswordUpdate = viewModel::updateLoginPassword,
                 modifier = Modifier
                     .weight(3f)
             )
@@ -62,7 +69,9 @@ private fun Banner(modifier: Modifier = Modifier) {
 
 @Composable
 private fun LoginAndSignUpForms(
-    loginTabState: StateFlow<LoginState>,
+    loginState: LoginState,
+    onUsernameUpdate: (String) -> Unit,
+    onPasswordUpdate: (String) -> Unit,
     modifier: Modifier = Modifier
 ) {
     Column(modifier = modifier) {
@@ -72,13 +81,12 @@ private fun LoginAndSignUpForms(
             selectedTabIndex = pagerState.currentPage,
             modifier = Modifier.height(48.dp)
         ) {
-            val tabTextStyle = MaterialTheme.typography.titleLarge
             Tab(
                 selected = pagerState.currentPage == 0,
                 onClick = { pagerState.requestScrollToPage(0) },
                 text = {
                     Text(
-                        text = stringResource(id = R.string.loginscreen_logintab_logintitle)
+                        text = stringResource(id = R.string.login_screen__login)
                     )
                 },
                 modifier = Modifier.fillMaxHeight()
@@ -88,7 +96,7 @@ private fun LoginAndSignUpForms(
                 onClick = { pagerState.requestScrollToPage(1) },
                 text = {
                     Text(
-                        text = stringResource(id = R.string.loginscreen_logintab_signuptitle),
+                        text = stringResource(id = R.string.login_screen__signup),
                     )
                 },
                 modifier = Modifier.fillMaxHeight()
@@ -97,11 +105,13 @@ private fun LoginAndSignUpForms(
 
         HorizontalPager(
             state = pagerState,
-            modifier = Modifier.fillMaxSize()
+            modifier = Modifier
+                .fillMaxSize()
+                .imePadding()
         ) { page ->
             when (page) {
                 0 -> {
-                    Text("Page 1!")
+                    LoginForm(state = loginState, onUsernameUpdate, onPasswordUpdate)
                 }
 
                 1 -> {
@@ -112,9 +122,43 @@ private fun LoginAndSignUpForms(
     }
 }
 
-//@Composable
-//private fun LoginForm(state: StateFlow<LoginState>, onUsernameUpdate: (String) -> Unit, onPasswordUpdate: (String) -> Unit) {
-//    Column {
-//        OutlinedTextField(value = , onValueChange = )
-//    }
-//}
+@Composable
+private fun LoginForm(
+    state: LoginState,
+    onUsernameUpdate: (String) -> Unit,
+    onPasswordUpdate: (String) -> Unit
+) {
+    val (username, password) = state
+
+    Column(horizontalAlignment = Alignment.CenterHorizontally, modifier = Modifier.fillMaxSize()) {
+        OutlinedTextField(
+            value = username,
+            label = { Text(stringResource(id = R.string.login_screen__username)) },
+            placeholder = { Text(stringResource(id = R.string.login_screen__username)) },
+            singleLine = true,
+            keyboardOptions = KeyboardOptions(
+                capitalization = KeyboardCapitalization.Unspecified,
+                keyboardType = KeyboardType.Email,
+                imeAction = ImeAction.Next
+            ),
+            onValueChange = onUsernameUpdate
+        )
+
+        OutlinedTextField(
+            value = password,
+            label = { Text(stringResource(id = R.string.login_screen__password)) },
+            placeholder = { Text(stringResource(id = R.string.login_screen__password)) },
+            keyboardOptions = KeyboardOptions(
+                capitalization = KeyboardCapitalization.Unspecified,
+                keyboardType = KeyboardType.Password,
+                imeAction = ImeAction.Send
+            ),
+            visualTransformation = PasswordVisualTransformation(),
+            onValueChange = onPasswordUpdate
+        )
+
+        Button(onClick = { /*TODO*/ }) {
+            Text(stringResource(id = R.string.login_screen__login))
+        }
+    }
+}

app/app/src/main/java/software/makeshift/debtpirate/usecases/login/LoginViewModel.kt

@@ -1,13 +1,11 @@
 package software.makeshift.debtpirate.usecases.login
 
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
 import androidx.lifecycle.ViewModel
-import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.asStateFlow
-import kotlinx.coroutines.flow.map
-import kotlinx.coroutines.flow.update
 
-data class LoginState(val username: String? = null, val password: String? = null)
+data class LoginState(val username: String = "", val password: String = "")
 
 data class SignUpState(
     val username: String? = null,
@@ -17,16 +15,22 @@ data class SignUpState(
 )
 
 class LoginScreenViewModel : ViewModel() {
-    private val _loginState = MutableStateFlow(LoginState())
-    val loginState = _loginState.asStateFlow()
+    var loginState by mutableStateOf(LoginState())
+        private set
 
-    val loginUsername: Flow<String?>
-        get() = loginState.map { loginState -> loginState.username }
+    val loginUsername: String
+        get() = loginState.username
 
     fun updateLoginUsername(username: String) {
-        _loginState.update { state ->
-            val (_, password) = state
-            LoginState(username, password)
-        }
+        val (_, password) = loginState
+        loginState = LoginState(username, password)
+    }
+
+    val loginPassword: String
+        get() = loginState.password
+
+    fun updateLoginPassword(password: String) {
+        val (username, _) = loginState
+        loginState = LoginState(username, password)
     }
 }

app/app/src/main/res/values/strings.xml

@@ -2,6 +2,9 @@
     <string name="app_name">Debt Pirate</string>
 
     <!--  Login Screen  -->
-    <string name="loginscreen_logintab_logintitle">Login</string>
-    <string name="loginscreen_logintab_signuptitle">Sign Up</string>
+    <string name="login_screen__login">Login</string>
+    <string name="login_screen__signup">Sign Up</string>
+    <string name="login_screen__username">Username</string>
+    <string name="login_screen__password">Password</string>
+
 </resources>