mg4/mise.toml

# Development environment with mise (the Nix flake, `nix develop`, is the other way in).
#
# Committed on purpose: it describes how to build the project, not someone's machine. Paths
# go through {{env.HOME}} / JAVA_HOME, never hard-coded. For a local override (keystore path,
# SDK elsewhere), create a mise.local.toml — that one stays ignored by git.
#
#   mise install       installs the JDK
#   mise run bootstrap installs the Android SDK if missing
#   mise run test      unit tests
#   mise tasks         lists everything
#
# Why the JDK is pinned: the machine's default JDK (26) is not supported by AGP and fails the
# build with an unhelpful class-version error.

[tools]
java = "17"

[env]
ANDROID_HOME = "{{env.HOME}}/Android/Sdk"
ANDROID_SDK_ROOT = "{{env.HOME}}/Android/Sdk"
_.path = [
    "{{env.HOME}}/Android/Sdk/platform-tools",
    "{{env.HOME}}/Android/Sdk/cmdline-tools/latest/bin",
]

# SDK version app/build.gradle needs (compileSdk = 36).
COMPILE_SDK = "36"
BUILD_TOOLS = "36.0.0"

# APK SIGNING secrets — nothing to do with the ABRP API key, which is entered in the app.
# Set them outside the repository: uncomment in a mise.local.toml (ignored by git) and point
# at a local keystore, NEVER at a file in the repository. The car build is signed by
# `build-car` (flake.nix) instead.
# SIGNING_KEYSTORE = "{{env.HOME}}/.keystores/signing.keystore"
# SIGNING_STORE_PASSWORD = "…"
# SIGNING_KEY_ALIAS = "platform"
# SIGNING_KEY_PASSWORD = "…"

# Gradle must run on the JDK mise just installed. Without -Dorg.gradle.java.home, Gradle may
# reuse a daemon started by another JDK — typically the one bundled with VS Code's Java
# extension, a JRE 21 without jlink: the build then fails in JdkImageTransform, with a message
# that has nothing to do with the code. JAVA_HOME is set by [tools] above; $JAVA_HOME is
# resolved by the shell at run time, so this stays portable between machines.
# ── Emulator ─────────────────────────────────────────────────────────────────────
#
# A WORD on fidelity: the car runs AAOS 9 (API 28). Google publishes NO Automotive system
# image below API 33 — checked with sdkmanager --list. So no emulator reproduces both the OS
# and the car API of the MG4. Hence two profiles, each faithful on one axis:
#
#   emulator-car     API 33 Automotive — has a CarPropertyManager, wrong OS version. For the
#                    service lifecycle and the car path. SAIC VENDOR properties (0x216xxxxx:
#                    SOC, range) do not exist in the emulator: those reads fail, as expected.
#   emulator-screen  API 28 tablet — right OS version and right screen (1920x720 @ 160 dpi,
#                    12.8" HD like the MG4), but NO car services. For the UI, layouts and
#                    density. (The AOSP API 28 image also shares the car's platform key, so the
#                    car build installs there as the system user.)
#
# None of this replaces a test on the car.
# Target density: 160 dpi. Screen 12.8" 1920x720. Reference firmware: SWI68-29958-1300R69.

EMU_CAR_AVD = "evabrp-car"
EMU_CAR_IMAGE = "system-images;android-33;android-automotive;x86_64"
EMU_SCREEN_AVD = "evabrp-screen"
EMU_SCREEN_IMAGE = "system-images;android-28;google_apis;x86_64"
EMU_WIDTH = "1920"
EMU_HEIGHT = "720"
EMU_DENSITY = "160"

[tasks.bootstrap]
description = "Installs the Android SDK (platform + build-tools) if missing"
run = """
set -e
if [ -d "$ANDROID_HOME/platforms/android-$COMPILE_SDK" ]; then
  echo "SDK $COMPILE_SDK already present, nothing to do"
  exit 0
fi
mkdir -p "$ANDROID_HOME"
if [ ! -x "$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" ]; then
  echo "Downloading the command-line tools…"
  tmp=$(mktemp -d)
  curl -sSL -o "$tmp/tools.zip" \
    https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip
  unzip -q "$tmp/tools.zip" -d "$tmp"
  mkdir -p "$ANDROID_HOME/cmdline-tools"
  mv "$tmp/cmdline-tools" "$ANDROID_HOME/cmdline-tools/latest"
  rm -rf "$tmp"
fi
yes | "$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" --sdk_root="$ANDROID_HOME" --licenses > /dev/null
"$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" --sdk_root="$ANDROID_HOME" \
  "platform-tools" "platforms;android-$COMPILE_SDK" "build-tools;$BUILD_TOOLS"
echo "sdk.dir=$ANDROID_HOME" > local.properties
echo "SDK installed, local.properties written"
"""

[tasks.build]
description = "Builds the debug APK"
run = './gradlew -Dorg.gradle.java.home=$JAVA_HOME assembleStableDebug'

[tasks.test]
description = "JVM unit tests"
run = './gradlew -Dorg.gradle.java.home=$JAVA_HOME testStableDebugUnitTest testUnstableDebugUnitTest'

[tasks.lint]
description = "Android lint"
run = './gradlew -Dorg.gradle.java.home=$JAVA_HOME lintStableDebug lintUnstableDebug'

[tasks.permissions]
description = "Permission drift check (the same as CI)"
run = "bash .github/security/check-permissions.sh"

[tasks.check]
description = "What CI runs: permissions + lint + tests"
depends = ["permissions", "lint", "test"]

[tasks.install]
description = "Installs the debug APK on the car connected over ADB"
run = './gradlew -Dorg.gradle.java.home=$JAVA_HOME installStableDebug'

[tasks.logs]
description = "Follows the app's logs on the car"
run = "adb logcat -s AbrpUploadService:V CarPropertyAdapter:V VhalProbe:V SecurePrefs:V OtaUpdater:V UpdateHook:V NilsMG4.Telemetry:V NilsMG4.Mongo:V NilsMG4.SteeringKey:V EVABRP.Boot:V EVABRP.Wifi:V"

[tasks.release]
description = "Release APKs of both channels (stable without OTA, unstable with OTA)"
run = './gradlew -Dorg.gradle.java.home=$JAVA_HOME assembleStableRelease assembleUnstableRelease'

[tasks.clean]
run = './gradlew -Dorg.gradle.java.home=$JAVA_HOME clean'

[tasks.emulator-setup]
description = "Installs the emulator and system images and creates both AVDs"
run = '''
set -e
SDK="$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager"
AVDM="$ANDROID_HOME/cmdline-tools/latest/bin/avdmanager"

if [ ! -e /dev/kvm ]; then
  echo "ERROR: /dev/kvm missing — no hardware acceleration, the emulator would be unusable." >&2
  echo "On WSL2: enable nested virtualisation on the Windows side." >&2
  exit 1
fi
if ! id -nG | tr ' ' '\n' | grep -qx kvm; then
  echo "WARNING: user is not in the kvm group. Fix with:" >&2
  echo "  sudo usermod -aG kvm $USER   # then log in again" >&2
fi

yes | "$SDK" --sdk_root="$ANDROID_HOME" --licenses > /dev/null
"$SDK" --sdk_root="$ANDROID_HOME" "emulator" "platform-tools" "$EMU_CAR_IMAGE" "$EMU_SCREEN_IMAGE"

create_avd() {
  name="$1"; image="$2"; device="$3"
  if "$AVDM" list avd 2>/dev/null | grep -q "Name: $name"; then
    echo "AVD $name already exists"
  else
    echo no | "$AVDM" create avd -n "$name" -k "$image" -d "$device" --force
  fi
  cfg="$HOME/.android/avd/$name.avd/config.ini"
  # The MG4's screen. Without this the AVD keeps the generic profile's density and the
  # layouts do not look like what the driver sees.
  sed -i '/^hw.lcd/d;/^disk.dataPartition.size/d' "$cfg"
  {
    echo "hw.lcd.width=$EMU_WIDTH"
    echo "hw.lcd.height=$EMU_HEIGHT"
    echo "hw.lcd.density=$EMU_DENSITY"
    echo "disk.dataPartition.size=4G"
  } >> "$cfg"
  echo "AVD $name set to ${EMU_WIDTH}x${EMU_HEIGHT} @ ${EMU_DENSITY}dpi"
}

create_avd "$EMU_CAR_AVD" "$EMU_CAR_IMAGE" "automotive_1024p_landscape"
create_avd "$EMU_SCREEN_AVD" "$EMU_SCREEN_IMAGE" "pixel_c"
'''

# swiftshader_indirect, not "host": WSL2 exposes no real GPU (only Mesa llvmpipe). With
# -gpu host the emulator dies at start-up on "Your GPU cannot be used for hardware
# rendering", before any window appears — hence a tray icon and no visible emulator.
# Software rendering is slower, but it starts.
[tasks.emulator-car]
description = "Starts the Automotive emulator (API 33 — has a CarPropertyManager)"
run = '''
set -e
"$ANDROID_HOME/emulator/emulator" -avd "$EMU_CAR_AVD" \
  -gpu swiftshader_indirect -no-snapshot-save -no-boot-anim &
"$ANDROID_HOME/platform-tools/adb" wait-for-device
echo "Car emulator ready."
'''

[tasks.emulator-screen]
description = "Starts the MG4 screen emulator (API 28, 1920x720 @ 160dpi — no car services)"
run = '''
set -e
"$ANDROID_HOME/emulator/emulator" -avd "$EMU_SCREEN_AVD" \
  -gpu swiftshader_indirect -no-snapshot-save -no-boot-anim &
"$ANDROID_HOME/platform-tools/adb" wait-for-device
echo "Screen emulator ready."
'''

[tasks.emulator-stop]
description = "Stops the running emulator"
run = '"$ANDROID_HOME/platform-tools/adb" emu kill || true'

[tasks.run]
description = "Builds, installs and starts the APK on the emulator or the connected car"
depends = ["build"]
run = '''
set -e
ADB="$ANDROID_HOME/platform-tools/adb"
if [ -z "$($ADB devices | sed '1d' | grep -w device || true)" ]; then
  echo "No device connected. Start 'mise run emulator-car' or 'mise run emulator-screen' first," >&2
  echo "or connect the car over ADB." >&2
  exit 1
fi
APK=$(ls -t app/build/outputs/apk/stable/debug/*.apk | head -1)
echo "Installing $APK"
$ADB install -r -g "$APK"
$ADB shell am start -n "com.stinnesbeck.nilsmg4/com.evsuite.abrp.MainActivity"
echo "Started. Logs: mise run logs"
'''