gallery/harnesses/gtauri/scripts/build.sh
gmp e019a950b1 gtauri: Tauri v2 gallery harness WORKING on emulator
Chromium owns scroll/compositor/lazy-load/image-cache; Rust owns
scan/SQLite/thumbnail-decode behind a gallery:// custom protocol.

Hard-won gotchas (see in-code comments):
- Android: no native custom-scheme support → wry rewrites the URL to
  http://gallery.localhost/... (custom_protocol_workaround). The JS
  MUST request that form; the handler receives the reverted
  gallery://localhost/... and must strip the authority.
- tauri_build::build() in build.rs must run UNCONDITIONALLY (build
  scripts run on the host: a cfg(target_os) gate silently disables it,
  which skips the rustc-cfg=mobile emission → no mobile_entry_point →
  .so with no JNI symbols → UnsatisfiedLinkError).
- build.rs must list frontend files for rerun-if-changed (a dir-level
  directive only watches the dir mtime, not content edits) — the .so
  bakes the frontend at compile time and cargo otherwise ships stale
  UI with a 'successful' build.
- logcat drops ~75% of lines under load: use the file trace.
- fetch() is CORS-restricted (page origin http://tauri.localhost);
  <img> is not — add ACAO:* anyway.

Emulator (5853 real files): grid renders, lazy thumbs via
gallery:// with on-disk cache (87 files 35-72KB), FR log clean at
60Hz, viewer opens full-res with compositor-only pan/zoom. The single
'broken' cell is a 17-byte fake test JPEG (correct behavior).
2026-10-31 18:59:51 -04:00

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#!/usr/bin/env bash
# gtauri build: Tauri v2 scroll-jank testbed (sltest port).
#
# ./scripts/build.sh # aarch64 (phone)
# ./scripts/build.sh x86_64 # emulator
# ADB_SERIAL=<s> ./scripts/build.sh # install target
#
# Output: /tmp/gtauri/<abi>-release.apk (signed with the debug keystore).
set -euo pipefail
cd "$(dirname "$0")/.."
ABI="${1:-aarch64}"
case "$ABI" in
aarch64|x86_64|armv7|i686) ;;
*) echo "unknown ABI: $ABI" >&2; exit 2 ;;
esac
export ANDROID_HOME="${ANDROID_HOME:-$HOME/android-sdk}"
export ANDROID_SDK_ROOT="$ANDROID_HOME"
cargo tauri android build --target "$ABI"
SRC=gen/android/app/build/outputs/apk/universal/release/app-universal-release-unsigned.apk
[ -f "$SRC" ] || { echo "APK not found at $SRC" >&2; exit 1; }
OUT=/tmp/gtauri
mkdir -p "$OUT"
cp "$SRC" "$OUT/gtauri-$ABI-unsigned.apk"
KEYSTORE="${KEYSTORE:-$HOME/.android/debug.keystore}"
APKSIGNER="$ANDROID_HOME/build-tools/35.0.0/apksigner"
"$APKSIGNER" sign --ks "$KEYSTORE" --ks-key-alias androiddebugkey \
--ks-pass pass:android --key-pass pass:android \
--out "$OUT/gtauri-$ABI-release.apk" "$OUT/gtauri-$ABI-unsigned.apk"
echo "APK: $OUT/gtauri-$ABI-release.apk ($(du -h "$OUT/gtauri-$ABI-release.apk" | cut -f1))"
if [ -n "${ADB_SERIAL:-}" ]; then
adb -s "$ADB_SERIAL" install -r "$OUT/gtauri-$ABI-release.apk"
adb -s "$ADB_SERIAL" shell am force-stop wow.gmp.gtauri
adb -s "$ADB_SERIAL" shell am start -n wow.gmp.gtauri/.MainActivity
fi