#!/bin/sh
# install-to-be.sh — Install zyginit binaries + config tree into a
# mounted Boot Environment (or any target root).
#
# Usage: install-to-be.sh <target-root>
#
#   e.g., after `beadm create zyginit && beadm mount zyginit /mnt`:
#       install-to-be.sh /mnt
#
# Copies:
#   /sbin/zyginit (built binary)  → <target>/sbin/zyginit
#   /sbin/zygctl  (built binary)  → <target>/sbin/zygctl
#   services/hammerhead/*.toml    → <target>/etc/zyginit/*.toml
#   services/hammerhead/<svc>/    → <target>/etc/zyginit/<svc>/
#   services/hammerhead/enabled.d → <target>/etc/zyginit/enabled.d/
#
# Preserves existing <target>/sbin/init as <target>/sbin/init.smf and
# replaces it with a symlink to /sbin/zyginit.

set -e
set -u

if [ $# -ne 1 ]; then
    echo "usage: $0 <target-root>" >&2
    exit 1
fi

TARGET="$1"
REPO="$(cd "$(dirname "$0")/.." && pwd)"

if [ ! -d "$TARGET" ]; then
    echo "error: $TARGET does not exist or is not a directory" >&2
    exit 1
fi

if [ ! -x "$REPO/build/zyginit" ]; then
    echo "error: $REPO/build/zyginit not built yet" >&2
    exit 1
fi

if [ ! -x "$REPO/tools/zygctl/build/zygctl" ]; then
    echo "error: $REPO/tools/zygctl/build/zygctl not built yet" >&2
    exit 1
fi

echo "installing zyginit into $TARGET..."

# Binaries
install -m 0755 "$REPO/build/zyginit" "$TARGET/sbin/zyginit"
install -m 0755 "$REPO/tools/zygctl/build/zygctl" "$TARGET/sbin/zygctl"

# Config tree
mkdir -p "$TARGET/etc/zyginit"
mkdir -p "$TARGET/etc/zyginit/enabled.d"

# Copy TOMLs (flat files at top of services/hammerhead/)
for t in "$REPO"/services/hammerhead/*.toml; do
    cp "$t" "$TARGET/etc/zyginit/"
done

# Copy per-service script subdirs (root-fs/, swap/, crypto/, filesystem/,
# identity/, sysconfig/, network/) — anything that exists gets copied
for d in "$REPO"/services/hammerhead/*/; do
    [ "$(basename "$d")" = "enabled.d" ] && continue
    dname="$(basename "$d")"
    mkdir -p "$TARGET/etc/zyginit/$dname"
    cp -r "$d"* "$TARGET/etc/zyginit/$dname/" 2>/dev/null || true
    chmod -R +x "$TARGET/etc/zyginit/$dname"
done

# Symlinks in enabled.d (recreate since cp doesn't preserve across fs)
for l in "$REPO"/services/hammerhead/enabled.d/*; do
    name="$(basename "$l")"
    ln -sf "../$name.toml" "$TARGET/etc/zyginit/enabled.d/$name"
done

# Persistent log dir (survives reboot — /var/run is tmpfs and would not).
# /var/run/zyginit/ is also created for the socket; logs live separately.
mkdir -p "$TARGET/var/log/zyginit"
mkdir -p "$TARGET/var/run/zyginit"

# Replace /sbin/init
if [ -e "$TARGET/sbin/init" ] && [ ! -L "$TARGET/sbin/init" ]; then
    # Preserve original (won't overwrite if already preserved)
    if [ ! -e "$TARGET/sbin/init.smf" ]; then
        mv "$TARGET/sbin/init" "$TARGET/sbin/init.smf"
        echo "  preserved original /sbin/init as /sbin/init.smf"
    fi
fi
ln -sf /sbin/zyginit "$TARGET/sbin/init"
echo "  installed /sbin/init → /sbin/zyginit"

echo "zyginit install complete in $TARGET"
echo ""
echo "verify:"
echo "  ls -la $TARGET/sbin/init"
echo "  ls $TARGET/etc/zyginit/enabled.d/"