#!/usr/dbpware/bin/bash
# Usage: ./build-package.sh <package-name>
set -e

PKG="$1"
if [ -z "$PKG" ]; then
    echo "Usage: $0 <package-name>"
    exit 1
fi

# --- Host-level lock ---
LOCKDIR="/tmp/build-host.lock"
while ! mkdir "$LOCKDIR" 2>/dev/null; do
    echo "Another build is running on this host. Waiting..."
    sleep 10
done
trap "rmdir '$LOCKDIR'" EXIT
echo "Acquired host lock, starting build of $PKG"

# --- Navigate to package directory ---
cd "$BUILDPKG_BASE/$PKG"

# --- Read package metadata from build.sh ---
topdir=$(ggrep -E '^topdir=' build.sh | cut -d= -f2)
version=$(ggrep -E '^version=' build.sh | cut -d= -f2)
pkgver=$(ggrep -E '^pkgver=' build.sh | cut -d= -f2)
secname="$topdir"

# --- Check if package already exists ---
PKGFILE=$(ls -1 ${secname}-${version}-${pkgver}.dbp*.gz 2>/dev/null | head -n1 || true)
if [ -n "$PKGFILE" ]; then
  echo "Package already built: $PKGFILE. Skipping."
  exit 0
fi

# --- Run the build ---
LOGFILE=$(bash build.sh all 2>&1 | tee /tmp/build-$secname.log | ggrep -oE '[^ ]+\.log' | gtail -n1)
if [ -n "$LOGFILE" ] && [ -f "$LOGFILE" ]; then
    echo "Tailing logfile: $LOGFILE"
    gtail -f "$LOGFILE" &
    TAIL_PID=$!
else
    echo "ERROR: No logfile detected for $PKG"
    exit 1
fi

wait -n
EXIT_CODE=$?
kill $TAIL_PID || true

if [ $EXIT_CODE -eq 0 ]; then
    echo "Build succeeded for $PKG, deleting logfile."
    rm -f "$LOGFILE" || true
else
    echo "Build FAILED for $PKG, keeping logfile: $LOGFILE"
    exit $EXIT_CODE
fi

echo "=== Finished build of $PKG ==="