- Web: favicon.ico + png icons under static/, served from the site root and linked from every page head. - Android: the artwork becomes the launcher icon — the 432px adaptive foreground over the gruvbox background, replacing the placeholder vector drawables. - Desktop: the icon is the Qt window/taskbar icon (embedded via app.qrc), and the app is now an installable package — a wrapped binary, a photog.desktop entry, and hicolor icons — so `nix profile install ./desktop` puts "Photog" in the application menu.
Gallery Upload — Android client
Native uploader for the photogallery POST /upload endpoint. Pick or share a
photo, add a caption and date, post. Credentials are entered once and sealed
with a key held in the Android Keystore.
The server is not modified by this app. Everything it needs, it does client side.
Build
cd android
nix develop # Android SDK 36, build-tools 36.0.0, JDK 17, gradle
gradle wrapper # first time only, generates ./gradlew
./gradlew assembleDebug
adb install -r app/build/outputs/apk/debug/app-debug.apk
The dev shell exports ANDROID_HOME, JAVA_HOME and a GRADLE_OPTS that
points AGP at the nix-provided aapt2. Without that last one AGP downloads a
generic-linux aapt2 from Maven which will not run on NixOS.
Release signing
app/build.gradle.kts wires up a release signing config only when
android/keystore.properties exists. Both that file and *.jks are
gitignored — keep the keystore outside the repo and back it up somewhere you
will still have in five years, because losing it means you can never upgrade an
installed build in place.
mkdir -p ~/keys
keytool -genkeypair -v \
-keystore ~/keys/photogallery-release.jks \
-alias photogallery \
-keyalg RSA -keysize 4096 -validity 10000
Then write android/keystore.properties:
storeFile=/home/you/keys/photogallery-release.jks
storePassword=…
keyAlias=photogallery
keyPassword=…
./gradlew assembleRelease
Without keystore.properties the release build still runs, it just comes out
unsigned.
How it maps onto the server
| Server behaviour | What the app does about it |
|---|---|
| Slug derived from the uploaded filename | Sends yyyy-MM-dd-HHmmss.jpg, generated once at enqueue |
| Same filename overwrites the same post | Reused across retries, which makes retries idempotent |
| Uploaded file published verbatim as "full size" | Strips EXIF, including GPS, before upload |
| Extension check rejects HEIC | Converts HEIC to JPEG; JPEG and PNG pass through losslessly |
nginx client_max_body_size 20M |
Steps quality, then resolution, if the result exceeds 18 MiB |
| Thumbnailer ignores EXIF orientation | Bakes rotation into the pixels rather than relying on the tag |
nginx only proxies /upload, so /health 404s |
Tests credentials with GET /upload instead |
Replies uploaded <slug>.jpg in plain text |
Parses that into <base>/photo/<slug>/ for the "Open" link |