Initial commit: Foto Dup Finder 1.0.1
An Android duplicate-photo finder. Pure-Kotlin core (SHA-256 + dHash hashing, exact and perceptual union-find grouping, three sensitivity presets) with MediaStore access, a persistent SQLite hash index and a tiered ScanEngine behind a Jetpack Compose UI. No INTERNET permission, no ads, no analytics, no account. Ships versionCode 2 / versionName 1.0.1, carrying the scan-stall hardening (BoundedCall breaker) and verified against a 5,363-photo device library. 80 JVM unit tests, lint clean. Release paperwork is in docs/ (Play checklist, store listing, edge-case testing), the upload-ready Play graphics and screenshots in store-assets/, and the generators for those assets in tools/.
This commit is contained in:
Hadrian Burkhardt
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import java.util.Properties
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import org.gradle.api.tasks.testing.Test
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plugins {
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alias(libs.plugins.android.application)
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alias(libs.plugins.kotlin.compose)
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}
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// Optional release signing.
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//
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// Create a `keystore.properties` file in the project ROOT (it is git-ignored; see
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// keystore.properties.example) with:
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//
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// storeFile=/absolute/path/to/upload-keystore.jks
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// storePassword=********
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// keyAlias=upload
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// keyPassword=********
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//
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// Without that file the release build still runs R8/minification but produces an
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// unsigned APK, which is fine for local checks but cannot be uploaded to Play.
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val keystorePropertiesFile = rootProject.file("keystore.properties")
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val keystoreProperties = Properties().apply {
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if (keystorePropertiesFile.exists()) {
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keystorePropertiesFile.inputStream().use { load(it) }
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}
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}
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val hasReleaseSigning = keystoreProperties.getProperty("storeFile") != null
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if (hasReleaseSigning) {
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// Fail early and readably instead of letting signReleaseBundle blow up later
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// with an opaque NullPointerException.
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val missing = listOf("storePassword", "keyAlias")
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.filter { keystoreProperties.getProperty(it).isNullOrBlank() }
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check(missing.isEmpty()) {
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"keystore.properties is incomplete — missing: ${missing.joinToString()}"
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}
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}
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android {
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namespace = "de.softwareapp_hb.fotodup.finder"
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compileSdk = 36
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defaultConfig {
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applicationId = "de.softwareapp_hb.fotodup.finder"
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minSdk = 26
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targetSdk = 36
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versionCode = 2
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versionName = "1.0.1"
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vectorDrawables {
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useSupportLibrary = true
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}
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}
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signingConfigs {
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if (hasReleaseSigning) {
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create("release") {
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storeFile = file(keystoreProperties.getProperty("storeFile"))
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storePassword = keystoreProperties.getProperty("storePassword")
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keyAlias = keystoreProperties.getProperty("keyAlias")
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// Falls back to the store password. That matches reality: PKCS12
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// keystores (the default on modern JDKs) cannot have a key password
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// that differs from the store password, and leaving this null makes
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// AGP's signReleaseBundle crash with an NPE.
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keyPassword = keystoreProperties.getProperty("keyPassword")
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?: keystoreProperties.getProperty("storePassword")
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}
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}
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}
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buildTypes {
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debug {
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applicationIdSuffix = ".debug"
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versionNameSuffix = "-debug"
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}
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release {
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if (hasReleaseSigning) {
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signingConfig = signingConfigs.getByName("release")
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}
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isMinifyEnabled = true
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isShrinkResources = true
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proguardFiles(
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getDefaultProguardFile("proguard-android-optimize.txt"),
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"proguard-rules.pro",
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)
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}
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}
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compileOptions {
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sourceCompatibility = JavaVersion.VERSION_17
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targetCompatibility = JavaVersion.VERSION_17
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}
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buildFeatures {
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compose = true
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}
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testOptions {
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unitTests {
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// Robolectric needs the merged resources and manifest to stand up the framework.
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isIncludeAndroidResources = true
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}
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}
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packaging {
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resources {
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excludes += "/META-INF/{AL2.0,LGPL2.1}"
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}
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}
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lint {
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// Dependency versions are pinned deliberately — Compose 1.12+/Coil 3.6+ need
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// compileSdk 37, which AGP 9.1 does not support yet (see the README version
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// note). These advisories are noise rather than signal here.
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disable += setOf(
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"GradleDependency",
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"AndroidGradlePluginVersion",
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"NewerVersionAvailable",
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)
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}
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}
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kotlin {
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compilerOptions {
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// With AGP built-in Kotlin this already defaults to
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// android.compileOptions.targetCompatibility; set explicitly for clarity.
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jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17
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}
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}
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// `java.awt` is used by the similarity benchmark (headless), and the benchmark itself is
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// opt-in. Gradle's -D only reaches the Gradle JVM, so the flags are forwarded explicitly.
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// Run it with:
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// ./gradlew :app:testDebugUnitTest --tests '*SimilarityBenchmarkTest*' -DfotoBench=true
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tasks.withType<Test>().configureEach {
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systemProperty("java.awt.headless", "true")
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// Robolectric reflects into JDK internals (notably java.io.FileDescriptor), which the module
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// system blocks from JDK 17 onwards. Without these it fails with "Failed to interact with raw
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// FileDescriptor internals".
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jvmArgs(
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"--add-opens=java.base/java.io=ALL-UNNAMED",
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"--add-opens=java.base/java.lang=ALL-UNNAMED",
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"--add-opens=java.base/java.lang.reflect=ALL-UNNAMED",
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"--add-opens=java.base/java.util=ALL-UNNAMED",
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"--add-opens=java.base/java.text=ALL-UNNAMED",
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"--add-opens=java.base/java.nio=ALL-UNNAMED",
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"--add-opens=java.base/sun.nio.ch=ALL-UNNAMED",
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// Robolectric reaches FileDescriptor internals through jdk.internal.access.SharedSecrets, and
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// that needs an *export* rather than an *open*: without it the run dies with
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// "IllegalAccessException ... module java.base does not export jdk.internal.access".
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"--add-exports=java.base/jdk.internal.access=ALL-UNNAMED",
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"--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED",
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"--add-exports=java.base/jdk.internal.reflect=ALL-UNNAMED",
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)
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systemProperty("fotoBench", providers.systemProperty("fotoBench").orNull ?: "false")
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providers.systemProperty("fotoBench.dir").orNull?.let { systemProperty("fotoBench.dir", it) }
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providers.systemProperty("fotoBench.count").orNull?.let { systemProperty("fotoBench.count", it) }
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providers.systemProperty("fotoBench.scenes").orNull?.let { systemProperty("fotoBench.scenes", it) }
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providers.systemProperty("fotoBench.density").orNull?.let { systemProperty("fotoBench.density", it) }
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providers.systemProperty("fotoBench.max").orNull?.let { systemProperty("fotoBench.max", it) }
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providers.systemProperty("fotoLocal.dir").orNull?.let { systemProperty("fotoLocal.dir", it) }
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providers.systemProperty("fotoScale").orNull?.let { systemProperty("fotoScale", it) }
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// Real-photo runs hold hundreds of decoded images in memory at once.
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maxHeapSize = "2g"
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testLogging { showStandardStreams = true }
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}
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dependencies {
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implementation(libs.androidx.core.ktx)
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// EXIF orientation, so a photo hashes the same whichever decode path served it.
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implementation(libs.androidx.exifinterface)
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implementation(libs.androidx.lifecycle.runtime.ktx)
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implementation(libs.androidx.lifecycle.runtime.compose)
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implementation(libs.androidx.lifecycle.viewmodel.compose)
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implementation(libs.androidx.activity.compose)
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implementation(platform(libs.androidx.compose.bom))
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implementation(libs.androidx.compose.ui)
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implementation(libs.androidx.compose.ui.graphics)
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implementation(libs.androidx.compose.ui.tooling.preview)
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implementation(libs.androidx.compose.material3)
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implementation(libs.androidx.compose.material.icons.core)
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implementation(libs.kotlinx.coroutines.android)
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implementation(libs.coil.compose)
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debugImplementation(libs.androidx.compose.ui.tooling)
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testImplementation(libs.junit)
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// Runs the real Android framework on the JVM, so the data layer is testable without a device.
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testImplementation(libs.robolectric)
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}
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