feat(app): support toggling read-only status in DecryptScreen

Author: msfjarvis

app/src/main/java/app/passwordstore/ui/crypto/DecryptScreen.kt

@@ -19,6 +19,8 @@ import androidx.compose.ui.platform.LocalClipboardManager
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.capitalize
+import androidx.compose.ui.text.intl.Locale
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import app.passwordstore.R
@@ -32,11 +34,23 @@ import kotlin.time.ExperimentalTime
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.runBlocking
 
+/**
+ * Composable to show a [PasswordEntry]. It can be used for both read-only usage (decrypt screen) or
+ * read-write (encrypt screen) to allow sharing UI logic for both these screens and deferring all
+ * the cryptographic aspects to its parent.
+ *
+ * When [readOnly] is `true`, the Composable assumes that we're showcasing the provided [entry] to
+ * the user and does not offer any edit capabilities.
+ *
+ * When [readOnly] is `false`, the [TextField]s are rendered editable but currently do not pass up
+ * their "updated" state to anything. This will be changed in later commits.
+ */
 @OptIn(ExperimentalTime::class, ExperimentalMaterial3Api::class)
 @Composable
 fun PasswordEntryScreen(
   entryName: String,
   entry: PasswordEntry,
+  readOnly: Boolean,
   modifier: Modifier = Modifier,
 ) {
   Scaffold(
@@ -61,21 +75,22 @@ fun PasswordEntryScreen(
             value = entry.password!!,
             label = "Password",
             initialVisibility = false,
+            readOnly = readOnly,
             modifier = Modifier.padding(bottom = 8.dp),
           )
         }
-        if (entry.hasTotp()) {
+        if (entry.hasTotp() && readOnly) {
           val totp by entry.totp.collectAsState(runBlocking { entry.totp.first() })
           TextField(
             value = totp.value,
             onValueChange = {},
-            readOnly = true,
+            readOnly = readOnly,
             label = { Text("OTP (expires in ${totp.remainingTime.inWholeSeconds}s)") },
             trailingIcon = { CopyButton({ totp.value }) },
             modifier = Modifier.padding(bottom = 8.dp),
           )
         }
-        if (entry.username != null) {
+        if (entry.username != null && readOnly) {
           TextField(
             value = entry.username!!,
             onValueChange = {},
@@ -85,11 +100,41 @@ fun PasswordEntryScreen(
             modifier = Modifier.padding(bottom = 8.dp),
           )
         }
+        ExtraContent(entry = entry, readOnly = readOnly)
       }
     }
   }
 }
 
+@Composable
+@OptIn(ExperimentalMaterial3Api::class)
+private fun ExtraContent(
+  entry: PasswordEntry,
+  readOnly: Boolean,
+  modifier: Modifier = Modifier,
+) {
+  if (readOnly) {
+    entry.extraContent.forEach { (label, value) ->
+      TextField(
+        value = value,
+        onValueChange = {},
+        readOnly = true,
+        label = { Text(label.capitalize(Locale.current)) },
+        trailingIcon = { CopyButton({ value }) },
+        modifier = modifier.padding(bottom = 8.dp),
+      )
+    }
+  } else {
+    TextField(
+      value = entry.extraContentWithoutAuthData,
+      onValueChange = {},
+      readOnly = false,
+      label = { Text("Extra content") },
+      modifier = modifier,
+    )
+  }
+}
+
 @Composable
 private fun CopyButton(
   textToCopy: () -> String,
@@ -110,7 +155,9 @@ private fun CopyButton(
 @Preview
 @Composable
 private fun PasswordEntryPreview() {
-  APSThemePreview { PasswordEntryScreen("Test Entry", createTestEntry()) }
+  APSThemePreview {
+    PasswordEntryScreen(entryName = "Test Entry", entry = createTestEntry(), readOnly = true)
+  }
 }
 
 private fun createTestEntry() =
@@ -121,6 +168,7 @@ private fun createTestEntry() =
     |My Password
     |otpauth://totp/ACME%20Co:john@example.com?secret=HXDMVJECJJWSRB3HWIZR4IFUGFTMXBOZ&issuer=ACME%20Co&algorithm=SHA1&digits=6&period=30
     |login: msfjarvis
+    |URL: example.com
   """
       .trimMargin()
       .encodeToByteArray()

ui-compose/src/main/kotlin/app/passwordstore/ui/compose/PasswordField.kt

@@ -21,13 +21,14 @@ public fun PasswordField(
   value: String,
   label: String,
   initialVisibility: Boolean,
+  readOnly: Boolean,
   modifier: Modifier = Modifier,
 ) {
   var visible by remember { mutableStateOf(initialVisibility) }
   TextField(
     value = value,
     onValueChange = {},
-    readOnly = true,
+    readOnly = readOnly,
     label = { Text(label) },
     visualTransformation =
       if (visible) VisualTransformation.None else PasswordVisualTransformation(),