#!/bin/sh
# mmdebstrap customize-hook: stamp narOS identity into the rootfs (NAROS.md §2.3).
# $1 = rootfs dir; NAROS_* env exported by build-rootfs.sh. Debian's own
# /usr/lib/os-release stays intact (ID_LIKE tooling keeps working); we replace only the
# /etc/os-release symlink with the narOS file.
set -eu
R="$1"

rm -f "$R/etc/os-release"
cat > "$R/etc/os-release" <<EOF
NAME="narOS"
PRETTY_NAME="narOS $NAROS_VERSION (Nucleic Agent Runtime OS)"
ID=naros
ID_LIKE=debian
VERSION_ID="$NAROS_VERSION"
VERSION="$NAROS_VERSION ($NAROS_CHANNEL)"
VERSION_CODENAME=$NAROS_SUITE
VARIANT="$NAROS_TIER"
VARIANT_ID=$NAROS_TIER
HOME_URL="https://github.com/abkslm/nucleic"
DOCUMENTATION_URL="https://github.com/abkslm/nucleic/blob/main/docs/NAROS.md"
EOF

mkdir -p "$R/etc/naros"
echo "$NAROS_CHANNEL" > "$R/etc/naros/channel"
echo "$NAROS_SNAPSHOT" > "$R/etc/naros/snapshot-date"
echo "container" > "$R/etc/naros/role"

# Capability manifest (NAROS.md §6.3). Base fields here; toolchain entries are appended
# by the tiers that install them (agent-tier hook, N2). Versions of Nucleic packages are
# queryable via dpkg, listed here for one-stop reads.
nash_ver="$(chroot "$R" dpkg-query -W -f '${Version}' nash 2>/dev/null || echo null)"
[ "$nash_ver" = null ] || nash_ver="\"$nash_ver\""
cat > "$R/etc/naros/manifest.json" <<EOF
{
  "os": "naros",
  "version": "$NAROS_VERSION",
  "channel": "$NAROS_CHANNEL",
  "tier": "$NAROS_TIER",
  "arch": "$NAROS_ARCH",
  "debian": { "suite": "$NAROS_SUITE", "snapshot": "$NAROS_SNAPSHOT" },
  "nash": $nash_ver,
  "toolchains": {},
  "caches": {}
}
EOF

echo "narOS identity: $(. "$R/etc/os-release" && echo "$PRETTY_NAME [$VARIANT/$NAROS_ARCH]")"