Implemented LoginScreen

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/App.kt

@@ -9,6 +9,8 @@ import androidx.compose.ui.unit.sp
 import kotlinx.coroutines.launch
 import net.codinux.banking.ui.config.Colors
 import net.codinux.banking.ui.config.DI
+import net.codinux.banking.ui.model.settings.AppAuthenticationMethod
+import net.codinux.banking.ui.screens.LoginScreen
 import net.codinux.banking.ui.screens.MainScreen
 import net.codinux.log.LoggerFactory
 import org.jetbrains.compose.ui.tooling.preview.Preview
@@ -25,13 +27,23 @@ fun App() {
     val colors = MaterialTheme.colors.copy(primary = Colors.Primary, primaryVariant = Colors.PrimaryDark, onPrimary = Color.White,
         secondary = Colors.Accent, secondaryVariant = Colors.Accent, onSecondary = Color.White)
 
+    val appSettings = DI.uiState.appSettings.collectAsState().value
+
+    var isLoggedIn by remember(appSettings.authenticationMethod) { mutableStateOf(appSettings.authenticationMethod == AppAuthenticationMethod.None) }
+
     var isInitialized by remember { mutableStateOf(false) }
 
     val coroutineScope = rememberCoroutineScope()
 
 
     MaterialTheme(colors = colors, typography = typography) {
-        MainScreen()
+        if (isLoggedIn == false) {
+            LoginScreen(appSettings) {
+                isLoggedIn = true
+            }
+        } else {
+            MainScreen()
+        }
     }
 
 

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/config/DI.kt

@@ -43,6 +43,10 @@ object DI {
 
     fun setRepository(repository: BankingRepository) {
         this.bankingRepository = repository
+
+        repository.getAppSettings()?.let { // otherwise it's the first app start, BankingService will take care of this case
+            uiState.appSettings.value = it
+        }
     }
 
 

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/forms/PasswordTextField.kt

@@ -17,7 +17,16 @@ import androidx.compose.ui.text.input.VisualTransformation
 import androidx.compose.ui.unit.dp
 
 @Composable // try BasicSecureTextField
-fun PasswordTextField(password: String = "", label: String = "Passwort", modifier: Modifier = Modifier, keyboardOptions: KeyboardOptions? = null, forceHidePassword: Boolean? = null, onEnterPressed: (() -> Unit)? = null, onChange: (String) -> Unit) {
+fun PasswordTextField(
+    password: String = "",
+    label: String = "Passwort",
+    modifier: Modifier = Modifier,
+    keyboardOptions: KeyboardOptions? = null,
+    isError: Boolean = false,
+    forceHidePassword: Boolean? = null,
+    onEnterPressed: (() -> Unit)? = null,
+    onChange: (String) -> Unit
+) {
 
     var passwordVisible by remember { mutableStateOf(false) }
 
@@ -30,6 +39,7 @@ fun PasswordTextField(password: String = "", label: String = "Passwort", modifie
         onValueChange = { onChange(it) },
         label = { Text(label) },
         modifier = modifier.fillMaxWidth(),
+        isError = isError,
         visualTransformation = if (passwordVisible) VisualTransformation.None else PasswordVisualTransformation(),
         trailingIcon = {
             val visibilityIcon = if (passwordVisible) {

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/screens/LoginScreen.kt

@@ -0,0 +1,80 @@
+package net.codinux.banking.ui.screens
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.Button
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import bankmeister.composeapp.generated.resources.*
+import bankmeister.composeapp.generated.resources.Res
+import net.codinux.banking.ui.forms.PasswordTextField
+import net.codinux.banking.ui.model.settings.AppAuthenticationMethod
+import net.codinux.banking.ui.model.settings.AppSettings
+import net.codinux.banking.ui.service.PasswordService
+import org.jetbrains.compose.resources.imageResource
+
+@Composable
+fun LoginScreen(appSettings: AppSettings, onLoginSuccess: () -> Unit) {
+
+    var password by remember { mutableStateOf("") }
+
+    var showError by remember { mutableStateOf(false) }
+
+
+    fun checkPassword() {
+        if (appSettings.hashedPassword != null && PasswordService.checkPassword(password, appSettings.hashedPassword!!)) {
+            onLoginSuccess()
+        } else {
+            showError = true
+        }
+    }
+
+
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(16.dp),
+        contentAlignment = Alignment.Center
+    ) {
+        Column(
+            horizontalAlignment = Alignment.CenterHorizontally,
+            verticalArrangement = Arrangement.Center
+        ) {
+            Image(imageResource(Res.drawable.AppIcon_round), "Bankmeister's app icon", Modifier.size(144.dp).padding(bottom = 32.dp))
+
+            if (appSettings.authenticationMethod == AppAuthenticationMethod.Password) {
+                Text("Bitte geben Sie Ihr Passwort ein um die App zu entsperren", style = MaterialTheme.typography.h5, textAlign = TextAlign.Center)
+                Spacer(modifier = Modifier.height(24.dp))
+
+                PasswordTextField(
+                    password = password,
+                    keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
+                    onEnterPressed = { checkPassword() },
+                    isError = showError
+                ) {
+                    password = it
+                    showError = false
+                }
+
+                if (showError) {
+                    Spacer(modifier = Modifier.height(16.dp))
+                    Text("Passwort ist falsch", color = MaterialTheme.colors.error, fontSize = 18.sp)
+                }
+
+                Button(modifier = Modifier.padding(top = 24.dp).width(300.dp).height(50.dp), onClick = { checkPassword() }) {
+                    Text("Login", color = Color.White)
+                }
+            }
+        }
+    }
+
+}