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

# Create the three DBIS RTGS first-slice sidecar LXCs on r630-02.
# Usage:
#   ./scripts/deployment/create-dbis-rtgs-sidecar-lxcs.sh [--dry-run]

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
source "${PROJECT_ROOT}/config/ip-addresses.conf" 2>/dev/null || true

HOST="${PROXMOX_HOST_R630_02:-${PROXMOX_R630_02:-192.168.11.12}}"
NETWORK="${NETWORK:-vmbr0}"
GATEWAY="${NETWORK_GATEWAY:-192.168.11.1}"
DNS="${DNS_PRIMARY:-1.1.1.1}"
STORAGE="${RTGS_SIDECAR_STORAGE:-thin3}"
TEMPLATE="${TEMPLATE_UBUNTU_24:-local:vztmpl/ubuntu-24.04-standard_24.04-1_amd64.tar.zst}"
SSH_OPTS="-o BatchMode=yes -o ConnectTimeout=15 -o StrictHostKeyChecking=accept-new"

DRY_RUN=false
if [[ "${1:-}" == "--dry-run" ]]; then
  DRY_RUN=true
fi

SIDEcars=(
  "5802 rtgs-scsm-1 192.168.11.89 4096 2 24"
  "5803 rtgs-funds-1 192.168.11.90 4096 2 24"
  "5804 rtgs-xau-1 192.168.11.92 4096 2 24"
)

resolve_template() {
  if ssh $SSH_OPTS "root@$HOST" "pveam list local 2>/dev/null | grep -q 'ubuntu-24.04-standard'" 2>/dev/null; then
    echo "local:vztmpl/ubuntu-24.04-standard_24.04-1_amd64.tar.zst"
  elif ssh $SSH_OPTS "root@$HOST" "pveam list local 2>/dev/null | grep -q 'ubuntu-22.04-standard'" 2>/dev/null; then
    echo "local:vztmpl/ubuntu-22.04-standard_22.04-1_amd64.tar.zst"
  else
    echo "$TEMPLATE"
  fi
}

TEMPLATE="$(resolve_template)"

echo "=== DBIS RTGS first-slice sidecar LXCs ==="
echo "Host: $HOST"
echo "Storage: $STORAGE"
echo "Template: $TEMPLATE"
echo

for spec in "${SIDEcars[@]}"; do
  read -r VMID HOSTNAME IP MEMORY CORES ROOTFS_GB <<<"$spec"
  if ssh $SSH_OPTS "root@$HOST" "pct status $VMID >/dev/null 2>&1"; then
    echo "CT $VMID already exists on $HOST; skipping create."
    continue
  fi

  CREATE_CMD="pct create $VMID $TEMPLATE \
    --hostname $HOSTNAME \
    --memory $MEMORY \
    --cores $CORES \
    --rootfs $STORAGE:${ROOTFS_GB} \
    --net0 name=eth0,bridge=$NETWORK,ip=$IP/24,gw=$GATEWAY \
    --features nesting=1,keyctl=1 \
    --nameserver $DNS \
    --onboot 1 \
    --start 1 \
    --unprivileged 0 \
    --description 'DBIS RTGS first-slice sidecar LXC ($HOSTNAME)'"

  if $DRY_RUN; then
    echo "[DRY-RUN] $CREATE_CMD"
    echo
    continue
  fi

  echo "Creating CT $VMID ($HOSTNAME, $IP)..."
  ssh $SSH_OPTS "root@$HOST" "$CREATE_CMD"
done

echo "Done."