#!/usr/bin/env bash
# ==============================================================================
# NexusPBX HA - Notification Keepalived : Transition vers l'état MASTER
# ==============================================================================
set -euo pipefail
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$PATH"

LOG_FILE="/var/log/nexus_cluster.log"
TIMESTAMP=$(date '+%Y-%m-%d %H:%M:%S')

echo "[$TIMESTAMP] [CLUSTER] >>> Transition vers l'état MASTER (VIP active) <<<" >> "$LOG_FILE"

# 1. Mise à jour de l'état en base de données locale si SQLite disponible
DB_PATH="/var/www/nexus-pbx/storage/database.sqlite"
if [ -f "$DB_PATH" ]; then
    sqlite3 "$DB_PATH" "UPDATE cluster_settings SET last_sync_status='master_active', updated_at=CURRENT_TIMESTAMP WHERE id=1;" 2>/dev/null || true
fi

# 2. Réactivation des enregistrements Trunks PJSIP et rechargement de la config
if pidof asterisk >/dev/null 2>&1; then
    /usr/sbin/asterisk -rx "pjsip reload" >> "$LOG_FILE" 2>&1 || true
    /usr/sbin/asterisk -rx "pjsip send register *" >> "$LOG_FILE" 2>&1 || true
    for reg in $(/usr/sbin/asterisk -rx "pjsip show registrations" 2>/dev/null | grep -o '[a-zA-Z0-9_\-]*-reg' | sort -u); do
        /usr/sbin/asterisk -rx "pjsip send register $reg" >> "$LOG_FILE" 2>&1 || true
    done
    /usr/sbin/asterisk -rx "dialplan reload" >> "$LOG_FILE" 2>&1 || true
fi

# 3. Gratuitous ARP optionnel si arping est présent
VIP=$(sqlite3 "$DB_PATH" "SELECT virtual_ip FROM cluster_settings WHERE id=1;" 2>/dev/null || echo "")
IFACE=$(sqlite3 "$DB_PATH" "SELECT interface FROM cluster_settings WHERE id=1;" 2>/dev/null || echo "eth0")
if [ -n "$VIP" ] && command -v arping >/dev/null 2>&1; then
    arping -c 3 -U -I "$IFACE" "$VIP" >> "$LOG_FILE" 2>&1 || true
fi

echo "[$TIMESTAMP] [CLUSTER] Prise de relais MASTER terminée avec succès." >> "$LOG_FILE"
exit 0