Initial commit

.gitignore

@@ -0,0 +1,6 @@
+build/*
+**/build/*
+.gradle/
+.idea/
+.kotlin
+kotlin-js-store

build.gradle.kts

@@ -0,0 +1,22 @@
+plugins {
+    alias(libs.plugins.kotlin.jvm)
+    alias(libs.plugins.compose)
+    alias(libs.plugins.kotlin.compose)
+}
+
+dependencies {
+    implementation(compose.desktop.currentOs)
+    implementation(libs.compose.material3)
+
+}
+
+compose.desktop {
+    application {
+        mainClass = "dev.geekback.secureDelete.MainKt"
+    }
+}
+
+repositories {
+    mavenCentral()
+    google()
+}

gradle/libs.versions.toml

@@ -0,0 +1,53 @@
+[versions]
+ktor = "3.5.2"
+kotlin = "2.4.0"
+compose = "1.11.1"
+compose-material3 = "1.11.0-alpha07"
+compose-icons = "1.1.1"
+datetime = "0.8.0"
+logback = "1.6.3"
+serialization = "1.11.0"
+kotlin-wrappers = "2026.7.7"
+
+[plugins]
+compose = { id = "org.jetbrains.compose", version.ref="compose" }
+ktor = { id = "io.ktor.plugin", version.ref="ktor" }
+kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref="kotlin" }
+kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
+kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref="kotlin" }
+kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref="kotlin"}
+
+[libraries]
+# KotlinX Modules
+kotlinx-serialization = { group = "org.jetbrains.kotlinx", name = "kotlinx-serialization-json", version.ref="serialization" }
+kotlinx-datetime = { group = "org.jetbrains.kotlinx", name="kotlinx-datetime", version.ref="datetime"}
+logback = { group = "ch.qos.logback", name ="logback-classic", version.ref = "logback" }
+# KTOR Common
+ktor-serialization-kotlinx-json = { group = "io.ktor", name="ktor-serialization-kotlinx-json", version.ref="ktor" }
+# KTOR Server
+ktor-server-swagger = { group = "io.ktor", name="ktor-server-swagger", version.ref="ktor"}
+ktor-server-test-host = { group = "io.ktor", name="ktor-server-test-host", version.ref="ktor"}
+ktor-server-openapi = { group = "io.ktor", name = "ktor-server-openapi", version.ref = "ktor" }
+ktor-server-routing-openapi = { group = "io.ktor", name = "ktor-server-routing-openapi", version.ref = "ktor" }
+ktor-server-content-negotiation = { group = "io.ktor", name="ktor-server-content-negotiation", version.ref="ktor" }
+ktor-server-websockets = { group = "io.ktor", name = "ktor-server-websockets", version.ref = "ktor" }
+ktor-server-core = { group = "io.ktor", name = "ktor-server-core", version.ref = "ktor" }
+ktor-server-netty = { group = "io.ktor", name = "ktor-server-netty", version.ref = "ktor" }
+ktor-server-status-pages = { group ="io.ktor", name="ktor-server-status-pages", version.ref="ktor" }
+ktor-server-logging = { group = "io.ktor", name="ktor-server-call-logging", version.ref="ktor" }
+ktor-server-cors = { group = "io.ktor", name="ktor-server-cors", version.ref="ktor" }
+
+# KTOR client
+ktor-client-core = { group = "io.ktor", name = "ktor-client-core", version.ref = "ktor" }
+ktor-client-cio = { group = "io.ktor", name = "ktor-client-cio", version.ref="ktor" }
+ktor-client-content-negotiation = { group = "io.ktor", name = "ktor-client-content-negotiation", version.ref="ktor" }
+ktor-client-websocket = { group = "io.ktor", name="ktor-client-websockets", version.ref="ktor" }
+# Compose Extras
+compose-icons-material = { group = "com.composables", name="icons-material-icons-filled-cmp", version="2.2.1" }
+compose-ui = { module = "org.jetbrains.compose.ui:ui", version.ref = "compose" }
+wrappers-browser = { module = "org.jetbrains.kotlin-wrappers:kotlin-browser", version.ref = "kotlin-wrappers" }
+compose-material3 = { group = "org.jetbrains.compose.material3", name = "material3", version.ref = "compose-material3" }
+compose-runtime = { group = "org.jetbrains.compose.runtime", name="runtime", version.ref="compose" }
+compose-foundation = { group = "org.jetbrains.compose.foundation", name="foundation", version.ref="compose"}
+compose-icons-feather = { group = "br.com.devsrsouza.compose.icons", name="feather", version.ref="compose-icons"}
+compose-preview = { group = "org.jetbrains.compose.ui", name="ui-tooling-preview", version.ref="compose"}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

@@ -0,0 +1,14 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+    }
+}
+
+dependencyResolutionManagement {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}

src/main/kotlin/dev/geekback/secureDelete/FileDropArea.kt

@@ -0,0 +1,92 @@
+package dev.geekback.secureDelete
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.draganddrop.dragAndDropTarget
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.ExperimentalComposeUiApi
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draganddrop.DragAndDropEvent
+import androidx.compose.ui.draganddrop.DragAndDropTarget
+import androidx.compose.ui.draganddrop.awtTransferable
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import java.awt.datatransfer.DataFlavor
+import java.io.File
+
+@OptIn(ExperimentalStdlibApi::class, ExperimentalComposeUiApi::class)
+@Composable
+fun FileDropArea(
+    modifier: Modifier = Modifier,
+    onFilesDropped: (List<File>) -> Unit
+) {
+    var isDragging by remember { mutableStateOf(false) }
+
+    val dropTarget = remember {
+        object : DragAndDropTarget {
+
+            override fun onStarted(event: DragAndDropEvent) {
+                isDragging = true
+            }
+
+            override fun onEnded(event: DragAndDropEvent) {
+                isDragging = false
+            }
+
+            override fun onDrop(event: DragAndDropEvent): Boolean {
+                isDragging = false
+                val transferable = event.awtTransferable
+                if (!transferable.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
+                    return false
+                }
+                @Suppress("UNCHECKED_CAST")
+                val files = transferable.getTransferData(
+                    DataFlavor.javaFileListFlavor
+                ) as? List<File> ?: return false
+                onFilesDropped(files)
+                return true
+            }
+        }
+    }
+    Box(
+        modifier = modifier
+            .fillMaxWidth()
+            .height(200.dp)
+            .dragAndDropTarget(
+                shouldStartDragAndDrop = { event ->
+                    event.awtTransferable.isDataFlavorSupported(
+                        DataFlavor.javaFileListFlavor
+                    )
+                },
+                target = dropTarget
+            )
+            .border(
+                width = 2.dp,
+                color = if (isDragging)
+                    MaterialTheme.colorScheme.primary
+                else
+                    Color.Gray,
+                shape = RoundedCornerShape(12.dp)
+            )
+            .background(
+                color = if (isDragging)
+                    MaterialTheme.colorScheme.primary.copy(alpha = 0.10f)
+                else
+                    Color.Transparent,
+                shape = RoundedCornerShape(12.dp)
+            ),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = if (isDragging)
+                "Release files here"
+            else
+                "Drag and drop files here"
+        )
+    }
+}

src/main/kotlin/dev/geekback/secureDelete/Main.kt

@@ -0,0 +1,12 @@
+package dev.geekback.secureDelete
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.ui.window.Window
+import androidx.compose.ui.window.application
+
+@OptIn(ExperimentalFoundationApi::class)
+fun main() = application {
+    Window(::exitApplication, title = "Secure Delete App") {
+        SecureDeleteApp()
+    }
+}

src/main/kotlin/dev/geekback/secureDelete/SecureDeleteApp.kt

@@ -0,0 +1,90 @@
+package dev.geekback.secureDelete
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.onClick
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.input.pointer.PointerIcon
+import androidx.compose.ui.input.pointer.pointerHoverIcon
+import androidx.compose.ui.unit.dp
+import java.awt.Cursor
+import java.io.File
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun SecureDeleteApp() {
+    var files by remember { mutableStateOf(emptyList<File>()) }
+    var isNuking by remember { mutableStateOf(false) }
+
+    Scaffold {
+        MaterialTheme {
+
+            val cursor = if (isNuking) {
+                PointerIcon.Hand
+            } else {
+                PointerIcon.Default
+            }
+
+            Column(modifier = Modifier.fillMaxSize().pointerHoverIcon(cursor)) {
+                FileDropArea(modifier = Modifier.weight(1f)) { droppedFiles ->
+                    files = files + droppedFiles
+                    droppedFiles.forEach { file ->
+                        println("File is $file.")
+                    }
+                }
+
+                Column {
+                    files.forEach { file ->
+                        Text(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(16.dp)
+                                .onClick(onClick = {
+                                    files = files.filter { it.absolutePath != file.absolutePath }
+                            }),
+                            text = file.absolutePath)
+                    }
+                }
+
+                Row(modifier = Modifier.align(Alignment.CenterHorizontally)) {
+                    Button(
+                        modifier = Modifier.padding(16.dp),
+                        onClick = {
+                        files = listOf()
+                    }) {
+                        Text("Clear Queue")
+                    }
+
+                    Button(
+                        modifier = Modifier.padding(16.dp),
+                        onClick = {
+                            // lock the UI while we work...
+
+
+                            files.forEach { file ->
+                                val startTime = System.currentTimeMillis()
+                                println("Nuking ${file.absolutePath} / ${file.length()}b")
+                                SecureFileDeleter.delete(file)
+                                val nukeTime = System.currentTimeMillis() - startTime
+                                println("Took $nukeTime ms")
+                                files = files.filter { it.absolutePath != file.absolutePath }
+                            }
+                            // ...unlock the UI.  we'ere done.
+                    }) {
+                        Text("Nuke Files")
+                    }
+                }
+            }
+        }
+    }
+}

src/main/kotlin/dev/geekback/secureDelete/SecureFileDeleter.kt

@@ -0,0 +1,35 @@
+package dev.geekback.secureDelete
+
+import java.io.File
+
+object SecureFileDeleter {
+    fun delete(file: File, recursive: Boolean = true) {
+        if (file.isFile()) {
+            val size = file.length()
+            println("Deleting ${file.absolutePath} - $size bytes")
+
+            rewriteFile(0x00.toByte(), file)
+            rewriteFile(0xff.toByte(), file)
+
+
+        } else if (file.isDirectory()) {
+            println("Found directory [${file.absolutePath}] - ${file.name}]")
+            file.listFiles { file1 ->
+                delete(file1)
+                true
+            }
+        }
+    }
+
+    fun rewriteFile(byte: Byte, file: File, blocks: Int = 512) {
+        val totalLen = file.length()
+        val blockSize = totalLen / blocks
+        val toWrite = ByteArray(blockSize.toInt()) { byte }
+        var currentByte = blockSize
+        file.writeBytes(toWrite)
+        while (currentByte < totalLen) {
+            file.appendBytes(toWrite)
+            currentByte += blockSize
+        }
+    }
+}