package_linux.sh

#!/bin/bash
# Package the Linux runtime build as a relocatable tarball + install.sh (#705).
#
#   ./scripts/package_linux.sh            # package an existing build/ (runs
#                                         # build_linux.sh --service --no-test
#                                         # first if artifacts are missing)
#   ./scripts/package_linux.sh --no-build # fail instead of building
#
# Output: dist/displayxr-runtime-linux-<arch>-<version>.tar.gz containing
#   bin/displayxr-cli [bin/displayxr-service]
#   lib/openxr_displayxr.so
#   lib/displayxr/plugins/DisplayXR-SimDisplay.so
#   install.sh / uninstall.sh / README.md / VERSION
#
# v1 scope (#705): runtime + sim_display, user-level default. All config files
# (ActiveRuntime json, DP manifest, systemd unit) are GENERATED by install.sh
# at install time with absolute paths — the tarball carries no templates.
# The vendor (Leia SR) plug-in ships via its own installer into the same
# DisplayProcessors root; this tarball stays vendor-free.

set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
BUILD_DIR="$ROOT/build"
DIST_DIR="$ROOT/dist"

NO_BUILD=0
for arg in "$@"; do
    case "$arg" in
    --no-build) NO_BUILD=1 ;;
    *) echo "Unknown option: $arg (supported: --no-build)" >&2; exit 2 ;;
    esac
done

find_runtime() { find "$BUILD_DIR/src/xrt/targets/openxr" -maxdepth 1 -name "openxr_displayxr.so" -type f 2>/dev/null | head -1; }

if [ -z "$(find_runtime)" ]; then
    if [ "$NO_BUILD" = 1 ]; then
        echo "error: no build found under $BUILD_DIR (run scripts/build_linux.sh --service first)" >&2
        exit 1
    fi
    echo "==> No existing build — running build_linux.sh --service --no-test"
    "$ROOT/scripts/build_linux.sh" --service --no-test
fi

RUNTIME_SO="$(find_runtime)"
CLI_BIN="$(find "$BUILD_DIR/src/xrt/targets/cli" -maxdepth 1 -name displayxr-cli -type f | head -1)"
SERVICE_BIN="$(find "$BUILD_DIR/src/xrt/targets/service" -maxdepth 1 -name displayxr-service -type f 2>/dev/null | head -1)"
PLUGIN_SO="$(find "$BUILD_DIR/src/xrt/drivers" -name "DisplayXR-SimDisplay.so" -type f | head -1)"

for f in "$RUNTIME_SO" "$CLI_BIN" "$PLUGIN_SO"; do
    [ -n "$f" ] || { echo "error: missing build artifact (runtime/cli/plugin)" >&2; exit 1; }
done
[ -n "$SERVICE_BIN" ] || echo "note: displayxr-service not built — packaging without it (--service build adds it)"

VERSION="$(git -C "$ROOT" describe --tags --always --dirty 2>/dev/null || echo unknown)"
ARCH="$(uname -m)"
NAME="displayxr-runtime-linux-$ARCH-$VERSION"
STAGE="$DIST_DIR/$NAME"

echo "==> Staging $NAME"
rm -rf "$STAGE"
mkdir -p "$STAGE/bin" "$STAGE/lib/displayxr/plugins"
cp "$CLI_BIN" "$STAGE/bin/"
[ -n "$SERVICE_BIN" ] && cp "$SERVICE_BIN" "$STAGE/bin/"
cp "$RUNTIME_SO" "$STAGE/lib/"
cp "$PLUGIN_SO" "$STAGE/lib/displayxr/plugins/"
cp "$ROOT/scripts/linux/install.sh" "$ROOT/scripts/linux/uninstall.sh" "$STAGE/"
chmod +x "$STAGE/install.sh" "$STAGE/uninstall.sh"
echo "$VERSION" > "$STAGE/VERSION"

cat > "$STAGE/README.md" <<EOF
# DisplayXR runtime for Linux ($VERSION)

Lightweight OpenXR runtime for 3D displays — Linux x86_64 build with the
vendor-neutral sim-display display processor.

## Install (user-level, no root)

    ./install.sh

Registers this runtime as the OpenXR ActiveRuntime for your user, installs the
sim-display display processor into the shared DisplayProcessors discovery
root, and (when present) a systemd --user unit for displayxr-service.

System-wide instead: \`sudo ./install.sh --system\` (no systemd unit, v1).
Remove with \`./uninstall.sh\` (same flag).

## Verify

    ~/.local/share/displayxr/bin/displayxr-cli selftest

## Vendor display plug-ins

Vendor display processors (e.g. Leia SR) install separately into the same
DisplayProcessors root with a lower probe order and take precedence over
sim-display automatically. See the DisplayXR docs: plugin-discovery.md.
EOF

mkdir -p "$DIST_DIR"
tar -C "$DIST_DIR" -czf "$DIST_DIR/$NAME.tar.gz" "$NAME"
echo "==> $DIST_DIR/$NAME.tar.gz"