Add account, switch account, and logout flows

app/src/main/java/com/vitorpamplona/amethyst/LocalPreferences.kt

@@ -80,18 +80,27 @@ object LocalPreferences {
         }
     }
 
-    fun clearEncryptedStorage(npub: String? = null) {
-        val encPrefs = encryptedPreferences(npub)
-        encPrefs.edit().apply {
-            encPrefs.all.keys.forEach {
-                remove(it)
+    fun clearEncryptedStorage(npub: String) {
+        val userPrefs = encryptedPreferences(npub)
+        userPrefs.edit().clear().apply()
+        removeAccount(npub)
+
+        if (savedAccounts.isEmpty()) {
+            val appPrefs = encryptedPreferences()
+            appPrefs.edit().clear().apply()
+        } else if (currentAccount == npub) {
+            currentAccount = savedAccounts.elementAt(0)
         }
+//        encPrefs.edit().apply {
+//            encPrefs.all.keys.forEach {
+//                remove(it)
+//            }
 //            encryptedPreferences.all.keys.filter {
 //                it.startsWith(npub)
 //            }.forEach {
 //                remove(it)
 //            }
-        }.apply()
+//        }.apply()
     }
 
     fun findAllLocalAccounts(): List<AccountInfo> {
@@ -132,6 +141,11 @@ object LocalPreferences {
         }.apply()
     }
 
+    fun login(account: Account) {
+        setCurrentAccount(account)
+        saveToEncryptedStorage(account)
+    }
+
     fun loadFromEncryptedStorage(): Account? {
         encryptedPreferences(currentAccount).apply {
             val pubKey = getString(PrefKeys.NOSTR_PUBKEY, null) ?: return null

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/AccountSwitchBottomSheet.kt

@@ -1,6 +1,7 @@
 package com.vitorpamplona.amethyst.ui.navigation
 
 import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
@@ -12,8 +13,12 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.ClickableText
 import androidx.compose.foundation.text.KeyboardActions
 import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.Button
+import androidx.compose.material.ButtonDefaults
 import androidx.compose.material.ExperimentalMaterialApi
 import androidx.compose.material.Icon
 import androidx.compose.material.IconButton
@@ -48,13 +53,18 @@ import androidx.compose.ui.platform.LocalAutofill
 import androidx.compose.ui.platform.LocalAutofillTree
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.text.input.VisualTransformation
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.text.style.TextDecoration
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
 import com.vitorpamplona.amethyst.LocalPreferences
@@ -103,6 +113,11 @@ fun AccountSwitchBottomSheet(
                     .fillMaxWidth()
                     .padding(32.dp, 16.dp),
                 verticalAlignment = Alignment.CenterVertically
+            ) {
+                Row(
+                    modifier = Modifier.clickable {
+                        accountStateViewModel.login(acc.npub)
+                    }
                 ) {
                     AsyncImageProxy(
                         model = ResizeImage(acc.profilePicture, 64.dp),
@@ -127,7 +142,11 @@ fun AccountSwitchBottomSheet(
                         Text("✓")
                     }
                     Spacer(modifier = Modifier.weight(1f))
-                IconButton(onClick = { /*TODO*/ }) {
+                }
+
+                IconButton(
+                    onClick = { accountStateViewModel.logOff(acc.npub) }
+                ) {
                     Icon(imageVector = Icons.Default.Logout, "Logout")
                 }
             }
@@ -229,6 +248,49 @@ fun AccountSwitchBottomSheet(
                             style = MaterialTheme.typography.caption
                         )
                     }
+
+                    Spacer(modifier = Modifier.height(16.dp))
+
+                    Button(
+                        onClick = {
+                            if (key.value.text.isBlank()) {
+                                errorMessage = context.getString(R.string.key_is_required)
+                            }
+                            try {
+                                accountStateViewModel.login(key.value.text)
+                            } catch (e: Exception) {
+                                errorMessage = context.getString(R.string.invalid_key)
+                            }
+                        },
+                        shape = RoundedCornerShape(35.dp),
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .height(50.dp),
+                        colors = ButtonDefaults
+                            .buttonColors(
+                                backgroundColor = MaterialTheme.colors.primary
+                            )
+                    ) {
+                        Text(text = stringResource(R.string.login))
+                    }
+
+                    Spacer(modifier = Modifier.height(16.dp))
+
+                    ClickableText(
+                        text = AnnotatedString(stringResource(R.string.generate_a_new_key)),
+                        modifier = Modifier
+                            .padding(20.dp)
+                            .fillMaxWidth(),
+                        onClick = {
+                            accountStateViewModel.newKey()
+                        },
+                        style = TextStyle(
+                            fontSize = 14.sp,
+                            textDecoration = TextDecoration.Underline,
+                            color = MaterialTheme.colors.primary,
+                            textAlign = TextAlign.Center
+                        )
+                    )
                 }
             }
         }

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/AccountStateViewModel.kt

@@ -26,10 +26,14 @@ class AccountStateViewModel() : ViewModel() {
 
         // Keeps it in the the UI thread to void blinking the login page.
         // viewModelScope.launch(Dispatchers.IO) {
+        tryLoginExistingAccount()
+        // }
+    }
+
+    private fun tryLoginExistingAccount() {
         LocalPreferences.loadFromEncryptedStorage()?.let {
             login(it)
         }
-        // }
     }
 
     fun login(key: String) {
@@ -47,18 +51,18 @@ class AccountStateViewModel() : ViewModel() {
                 Account(Persona(Hex.decode(key)))
             }
 
-        LocalPreferences.saveToEncryptedStorage(account)
+        LocalPreferences.login(account)
         login(account)
     }
 
     fun newKey() {
         val account = Account(Persona())
-        LocalPreferences.saveToEncryptedStorage(account)
+        LocalPreferences.login(account)
         login(account)
     }
 
     fun login(account: Account) {
-        LocalPreferences.setCurrentAccount(account)
+        LocalPreferences.login(account)
 
         if (account.loggedIn.privKey != null) {
             _accountContent.update { AccountState.LoggedIn(account) }
@@ -82,7 +86,7 @@ class AccountStateViewModel() : ViewModel() {
         }
     }
 
-    fun logOff() {
+    fun logOff(npub: String) {
         val state = accountContent.value
 
         when (state) {
@@ -101,6 +105,7 @@ class AccountStateViewModel() : ViewModel() {
 
         _accountContent.update { AccountState.LoggedOff }
 
-        LocalPreferences.clearEncryptedStorage()
+        LocalPreferences.clearEncryptedStorage(npub)
+        tryLoginExistingAccount()
     }
 }