feat: Add ${uuid} special reference

app/src/main/java/co/adityarajput/fileflow/data/models/Action.kt

@@ -8,10 +8,13 @@ import androidx.compose.ui.text.buildAnnotatedString
 import androidx.compose.ui.text.withStyle
 import co.adityarajput.fileflow.R
 import co.adityarajput.fileflow.data.Verb
+import co.adityarajput.fileflow.utils.File
 import co.adityarajput.fileflow.utils.FileSuperlative
 import co.adityarajput.fileflow.utils.getGetDirectoryFromUri
 import co.adityarajput.fileflow.utils.toShortHumanReadableTime
 import kotlinx.serialization.Serializable
+import kotlin.uuid.ExperimentalUuidApi
+import kotlin.uuid.Uuid
 
 @Suppress("ClassName")
 @Serializable
@@ -65,6 +68,19 @@ sealed class Action {
             withStyle(dullStyle) { append("\nas ") }
             append(destFileNameTemplate)
         }
+
+        @OptIn(ExperimentalUuidApi::class)
+        fun getDestFileName(srcFile: File) =
+            srcFile.name!!.replace(
+                Regex(srcFileNamePattern),
+                destFileNameTemplate.replace(
+                    $$"${uuid}",
+                    Uuid.random().toString(),
+                ).replace(
+                    $$"${folder}",
+                    srcFile.parent?.name ?: "",
+                ),
+            )
     }
 
     @Serializable

app/src/main/java/co/adityarajput/fileflow/services/FlowExecutor.kt

@@ -52,13 +52,7 @@ class FlowExecutor(private val context: Context) {
                             continue
                         }
 
-                        val destFileName = srcFile.name!!.replace(
-                            regex,
-                            rule.action.destFileNameTemplate.replace(
-                                $$"${folder}",
-                                srcFile.parent?.name ?: "",
-                            ),
-                        )
+                        val destFileName = rule.action.getDestFileName(srcFile)
                         var destFile = destSubDir.listChildren(false)
                             .firstOrNull { it.isFile && it.name == destFileName }
 

app/src/main/java/co/adityarajput/fileflow/viewmodels/UpsertRuleViewModel.kt

@@ -107,15 +107,9 @@ class UpsertRuleViewModel(
                 ?.also { if (it.isEmpty()) warning = FormWarning.NO_MATCHES_IN_SRC }
 
             if (matchingSrcFiles != null && values.destFileNameTemplate.isNotBlank()) {
-                predictedDestFileNames = matchingSrcFiles.map {
-                    it.name!!.replace(
-                        regex,
-                        values.destFileNameTemplate.replace(
-                            $$"${folder}",
-                            it.parent?.name ?: "",
-                        ),
-                    )
-                }.distinct()
+                predictedDestFileNames = matchingSrcFiles
+                    .map { (values.toRule().action as Action.MOVE).getDestFileName(it) }
+                    .distinct()
             }
         } catch (_: Exception) {
         }

app/src/main/java/co/adityarajput/fileflow/views/screens/OnboardingScreen.kt

@@ -1,6 +1,5 @@
 package co.adityarajput.fileflow.views.screens
 
-import android.annotation.SuppressLint
 import android.os.Handler
 import android.os.Looper
 import androidx.compose.foundation.layout.*
@@ -22,7 +21,6 @@ private val permissions = listOf(
     Permission.MANAGE_EXTERNAL_STORAGE,
 )
 
-@SuppressLint("BatteryLife")
 @Composable
 fun OnboardingScreen(goToRulesScreen: () -> Unit = {}) {
     val context = LocalContext.current

app/src/main/java/co/adityarajput/fileflow/views/screens/UpsertRuleScreen.kt

@@ -324,14 +324,39 @@ private fun ColumnScope.ActionPage(viewModel: UpsertRuleViewModel) {
                 label = { Text(stringResource(R.string.file_name_template)) },
                 placeholder = { Text(stringResource(R.string.template_placeholder)) },
                 supportingText = {
-                    if (viewModel.state.values.predictedDestFileNames?.isNotEmpty() ?: false)
+                    if (viewModel.state.values.predictedDestFileNames.isNullOrEmpty()) {
+                        Text(
+                            buildAnnotatedString {
+                                append(stringResource(R.string.blank_template_supporting))
+                                if (viewModel.state.values.destFileNameTemplate != "$0") {
+                                    withLink(
+                                        LinkAnnotation.Clickable(
+                                            "keep_name",
+                                            TextLinkStyles(
+                                                SpanStyle(
+                                                    MaterialTheme.colorScheme.primary,
+                                                    textDecoration = TextDecoration.Underline,
+                                                ),
+                                            ),
+                                        ) {
+                                            viewModel.updateForm(
+                                                context,
+                                                viewModel.state.values.copy(destFileNameTemplate = "$0"),
+                                            )
+                                        },
+                                    ) { append(stringResource(R.string.keep_name)) }
+                                }
+                            },
+                        )
+                    } else {
                         Text(
                             stringResource(
                                 R.string.template_will_yield,
                                 viewModel.state.values.predictedDestFileNames!!
                                     .joinToString(stringResource(R.string.or), limit = 3),
                             ),
                         )
+                    }
                 },
                 colors = OutlinedTextFieldDefaults.colors(
                     focusedContainerColor = MaterialTheme.colorScheme.secondaryContainer,

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

@@ -109,6 +109,8 @@
     <string name="preserve_structure">Recreate source folder-structure in destination</string>
     <string name="file_name_template">File name template</string>
     <string name="template_placeholder">Enter a regex template</string>
+    <string name="blank_template_supporting">"Template will be used to name the file in the destination. "</string>
+    <string name="keep_name">Keep original name?</string>
     <string name="template_will_yield">Template will yield %1$s</string>
     <string name="overwrite_existing">Overwrite existing files in the destination, in case of conflict</string>
     <string name="retention_days">Mark stale if unmodified for</string>