#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=backup.env
source "$SCRIPT_DIR/backup.env"

# ==============================================================================
# BACKUP-SPECIFIC CONFIGURATION
# ==============================================================================
BACKUP_LABEL="${HOSTNAME}-root"
EXCLUDE_FILE="/etc/proxmox-backup/defaults.exclude"

# Create a default exclude file if it doesn't exist
if [ ! -f "$EXCLUDE_FILE" ]; then
    mkdir -p "$(dirname "$EXCLUDE_FILE")"
    cat << 'EOF' > "$EXCLUDE_FILE"
/proc/*
/sys/*
/dev/*
/run/*
/tmp/*
/mnt/*
/media/*
/lost+found
/var/tmp/*
/var/cache/*
EOF
fi

# ==============================================================================
# EXECUTION
# ==============================================================================
echo "Starting Proxmox Backup for ${HOSTNAME}..."

EXCLUDE_ARGS=()
while IFS= read -r line; do
    [ -z "$line" ] && continue
    EXCLUDE_ARGS+=(--exclude "$line")
done < "$EXCLUDE_FILE"

proxmox-backup-client backup "${BACKUP_LABEL}.pxar:/" \
    --keyfile "$ENCRYPTION_KEY_FILE" \
    --ns "$BACKUP_NS" \
    "${EXCLUDE_ARGS[@]}"

echo "Backup completed successfully!"