#!/bin/bash
# Cron job: check trigger file, rebuild Nuxt if present
TRIGGER="/tmp/gw-rebuild-trigger"
LOCK="/tmp/gw-rebuild.lock"
LOG="/tmp/gw-rebuild.log"

[ ! -f "$TRIGGER" ] && exit 0

log() { echo "$(date '+%Y-%m-%d %H:%M:%S') $1" >> "$LOG"; }

# Prevent concurrent rebuilds
if [ -f "$LOCK" ]; then
    pid=$(cat "$LOCK")
    if kill -0 "$pid" 2>/dev/null; then
        exit 0
    fi
    rm -f "$LOCK"
fi
echo $$ > "$LOCK"
trap "rm -f $LOCK" EXIT

MODULES=$(cat "$TRIGGER")
rm -f "$TRIGGER"

log "Rebuild triggered by: $MODULES"
cd /opt/gw/hulai-website || exit 1

pnpm build >> "$LOG" 2>&1
if [ $? -eq 0 ]; then
    pm2 restart gw-website --update-env >> "$LOG" 2>&1
    log "Rebuild + restart complete"
else
    log "ERROR: Nuxt build failed"
fi