customer-installer/install.sh

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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "${SCRIPT_DIR}/libsupabase.sh"
setup_traps

usage() {
  cat >&2 <<'EOF'
Usage:
  bash install.sh [options]

Core options:
  --ctid <id>                 Force CT ID (optional). If omitted, a customer-safe CTID is generated.
  --cores <n>                 (default: 2)
  --memory <mb>               (default: 4096)
  --swap <mb>                 (default: 512)
  --disk <gb>                 (default: 50)
  --bridge <vmbrX>            (default: vmbr0)
  --vlan <id>                 VLAN tag on net0 (default: 90)
  --storage <storage>         (default: local-zfs)
  --ip <dhcp|CIDR>            (default: dhcp)
  --privileged                Create privileged CT (default: unprivileged)
  --fqdn-suffix <domain>      (default: userman.de) -> FQDN becomes sb-<time>.<domain>
  --help                      Show help

EOF
}

# Defaults
CTID=""
CORES="2"
MEMORY="4096"
SWAP="512"
DISK="50"
BRIDGE="vmbr0"
VLAN="90"
STORAGE="local-zfs"
IPCFG="dhcp"
UNPRIV="1"
FQDN_SUFFIX="userman.de"

# ---------------------------
# Arg parsing
# ---------------------------
while [[ $# -gt 0 ]]; do
  case "$1" in
    --ctid) CTID="${2:-}"; shift 2 ;;
    --cores) CORES="${2:-}"; shift 2 ;;
    --memory) MEMORY="${2:-}"; shift 2 ;;
    --swap) SWAP="${2:-}"; shift 2 ;;
    --disk) DISK="${2:-}"; shift 2 ;;
    --bridge) BRIDGE="${2:-}"; shift 2 ;;
    --vlan) VLAN="${2:-}"; shift 2 ;;
    --storage) STORAGE="${2:-}"; shift 2 ;;
    --ip) IPCFG="${2:-}"; shift 2 ;;
    --fqdn-suffix) FQDN_SUFFIX="${2:-}"; shift 2 ;;
    --privileged) UNPRIV="0"; shift 1 ;;
    --help|-h) usage; exit 0 ;;
    *) die "Unknown option: $1 (use --help)" ;;
  esac
done

# Validation
[[ "$CORES" =~ ^[0-9]+$ ]] || die "--cores must be integer"
[[ "$MEMORY" =~ ^[0-9]+$ ]] || die "--memory must be integer"
[[ "$SWAP" =~ ^[0-9]+$ ]] || die "--swap must be integer"
[[ "$DISK" =~ ^[0-9]+$ ]] || die "--disk must be integer"
[[ "$UNPRIV" == "0" || "$UNPRIV" == "1" ]] || die "internal: UNPRIV invalid"
[[ "$VLAN" =~ ^[0-9]+$ ]] || die "--vlan must be integer"

if [[ "$IPCFG" != "dhcp" ]]; then
  [[ "$IPCFG" =~ ^([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}$ ]] || die "--ip must be dhcp or CIDR (e.g. 192.168.45.171/24)"
fi

info "Argument-Parsing OK"

# ---------------------------
# Preflight Proxmox
# ---------------------------
need_cmd pct pvesm pveam pvesh python3 grep date

pve_storage_exists "$STORAGE" || die "Storage not found: $STORAGE"
pve_bridge_exists "$BRIDGE" || die "Bridge not found: $BRIDGE"

TEMPLATE="$(pve_template_ensure_debian12 "$STORAGE")"
info "Template OK: ${TEMPLATE}"

# Hostname based on unix time (agreed)
CT_HOSTNAME="sb-$(date +%s)"
FQDN="${CT_HOSTNAME}.${FQDN_SUFFIX}"

# CTID selection
if [[ -n "$CTID" ]]; then
  [[ "$CTID" =~ ^[0-9]+$ ]] || die "--ctid must be integer"
  if pve_vmid_exists_cluster "$CTID"; then
    die "Forced CTID=${CTID} already exists in cluster"
  fi
else
  CTID="$(pve_select_customer_ctid)"
fi

info "CTID selected: ${CTID}"
info "SCRIPT_DIR=${SCRIPT_DIR}"
info "CT_HOSTNAME=${CT_HOSTNAME}"
info "FQDN=${FQDN}"
info "cores=${CORES} memory=${MEMORY}MB swap=${SWAP}MB disk=${DISK}GB"
info "bridge=${BRIDGE} storage=${STORAGE} ip=${IPCFG} vlan=${VLAN} unprivileged=${UNPRIV}"

# ---------------------------
# Step 5: Create CT
# ---------------------------
NET0="$(pve_build_net0 "$BRIDGE" "$IPCFG" "$VLAN")"
ROOTFS="${STORAGE}:${DISK}"
FEATURES="nesting=1,keyctl=1,fuse=1"

info "Step 5: Create CT"
info "Creating CT ${CTID} (${CT_HOSTNAME}) from ${TEMPLATE}"
pct create "${CTID}" "${TEMPLATE}" \
  --hostname "${CT_HOSTNAME}" \
  --cores "${CORES}" \
  --memory "${MEMORY}" \
  --swap "${SWAP}" \
  --net0 "${NET0}" \
  --rootfs "${ROOTFS}" \
  --unprivileged "${UNPRIV}" \
  --features "${FEATURES}" \
  --start 0

info "CT created (not started). Next step: start CT + wait for IP"
info "Starting CT ${CTID}"
pct start "${CTID}"

CT_IP="$(pct_wait_for_ip "${CTID}" || true)"
[[ -n "${CT_IP}" ]] || die "Could not determine CT IP after start"

info "Step 5 OK: LXC erstellt + IP ermittelt"
info "CT_HOSTNAME=${CT_HOSTNAME}"
info "CT_IP=${CT_IP}"

# ---------------------------
# Step 6: Provision inside CT (Docker + Locales + Base)
# ---------------------------
info "Step 6: Provisioning im CT (Docker + Locales + Base)"

pct_exec "${CTID}" "export DEBIAN_FRONTEND=noninteractive; apt-get update -y"
pct_exec "${CTID}" "export DEBIAN_FRONTEND=noninteractive; apt-get install -y ca-certificates curl gnupg lsb-release locales"

# Ensure locale exists (de_DE + en_US to be safe), then set default locale file.
pct_exec "${CTID}" "sed -i 's/^# \\(de_DE.UTF-8\\)/\\1/' /etc/locale.gen || true"
pct_exec "${CTID}" "sed -i 's/^# \\(en_US.UTF-8\\)/\\1/' /etc/locale.gen || true"
pct_exec "${CTID}" "locale-gen >/dev/null || true"
pct_exec "${CTID}" "update-locale LANG=de_DE.UTF-8 LC_ALL=de_DE.UTF-8 || true"

# Docker official repo (Debian 12 / bookworm)
pct_exec "${CTID}" "install -m 0755 -d /etc/apt/keyrings"
pct_exec "${CTID}" "curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg"
pct_exec "${CTID}" "chmod a+r /etc/apt/keyrings/docker.gpg"
pct_exec "${CTID}" "echo \"deb [arch=\$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \$(. /etc/os-release && echo \$VERSION_CODENAME) stable\" > /etc/apt/sources.list.d/docker.list"
pct_exec "${CTID}" "export DEBIAN_FRONTEND=noninteractive; apt-get update -y"
pct_exec "${CTID}" "export DEBIAN_FRONTEND=noninteractive; apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin"

# Base directories
pct_exec "${CTID}" "mkdir -p /opt/customer-stack/volumes /opt/customer-stack/sql"

info "Step 6 OK: Docker + Compose Plugin installiert, Locales gesetzt, Basis-Verzeichnisse erstellt"

# ---------------------------
# Step 7: Stack finalisieren + Secrets + Up + Checks
# ---------------------------
info "Step 7: Stack finalisieren + Secrets + Up + Checks"

# Generate secrets on host (safe, deterministic output), then write .env inside CT.
PG_DB="customer"
PG_USER="customer"
PG_PASSWORD="$(_rand_b64url 24)"
N8N_ENCRYPTION_KEY="$(_rand_hex 32)"

N8N_PORT="5678"
N8N_PROTOCOL="http"
N8N_HOST="${CT_IP}"
N8N_EDITOR_BASE_URL="https://${FQDN}/"
WEBHOOK_URL="https://${FQDN}/"
N8N_SECURE_COOKIE="false"

# Telemetry / background calls off
N8N_DIAGNOSTICS_ENABLED="false"
N8N_VERSION_NOTIFICATIONS_ENABLED="false"
N8N_TEMPLATES_ENABLED="false"

# Write env
pct exec "${CTID}" -- bash -lc "cat > /opt/customer-stack/.env <<'ENV'
PG_DB=${PG_DB}
PG_USER=${PG_USER}
PG_PASSWORD=${PG_PASSWORD}

N8N_PORT=${N8N_PORT}
N8N_PROTOCOL=${N8N_PROTOCOL}
N8N_HOST=${N8N_HOST}
N8N_EDITOR_BASE_URL=${N8N_EDITOR_BASE_URL}
WEBHOOK_URL=${WEBHOOK_URL}
N8N_SECURE_COOKIE=${N8N_SECURE_COOKIE}

N8N_ENCRYPTION_KEY=${N8N_ENCRYPTION_KEY}

# Telemetrie/Background Calls aus (n8n docs)
N8N_DIAGNOSTICS_ENABLED=${N8N_DIAGNOSTICS_ENABLED}
N8N_VERSION_NOTIFICATIONS_ENABLED=${N8N_VERSION_NOTIFICATIONS_ENABLED}
N8N_TEMPLATES_ENABLED=${N8N_TEMPLATES_ENABLED}
ENV"

# Write init SQL (pgvector)
pct exec "${CTID}" -- bash -lc "cat > /opt/customer-stack/sql/init_pgvector.sql <<'SQL'
CREATE EXTENSION IF NOT EXISTS vector;
CREATE EXTENSION IF NOT EXISTS pgcrypto;
SQL"

# Write docker-compose.yml (final)
pct exec "${CTID}" -- bash -lc "cat > /opt/customer-stack/docker-compose.yml <<'YML'
services:
  postgres:
    image: pgvector/pgvector:pg16
    container_name: customer-postgres
    restart: unless-stopped
    environment:
      POSTGRES_DB: \${PG_DB}
      POSTGRES_USER: \${PG_USER}
      POSTGRES_PASSWORD: \${PG_PASSWORD}
    volumes:
      - ./volumes/postgres/data:/var/lib/postgresql/data
      - ./sql:/docker-entrypoint-initdb.d:ro
    healthcheck:
      test: [\"CMD-SHELL\", \"pg_isready -U \${PG_USER} -d \${PG_DB} || exit 1\"]
      interval: 10s
      timeout: 5s
      retries: 20
    networks:
      - customer-net

  n8n:
    image: n8nio/n8n:latest
    container_name: n8n
    restart: unless-stopped
    depends_on:
      postgres:
        condition: service_healthy
    ports:
      - \"\${N8N_PORT}:5678\"
    user: \"1000:1000\"
    environment:
      N8N_PORT: 5678
      N8N_PROTOCOL: \${N8N_PROTOCOL}
      N8N_HOST: \${N8N_HOST}
      N8N_EDITOR_BASE_URL: \${N8N_EDITOR_BASE_URL}
      WEBHOOK_URL: \${WEBHOOK_URL}
      N8N_SECURE_COOKIE: \${N8N_SECURE_COOKIE}

      DB_TYPE: postgresdb
      DB_POSTGRESDB_HOST: postgres
      DB_POSTGRESDB_PORT: 5432
      DB_POSTGRESDB_DATABASE: \${PG_DB}
      DB_POSTGRESDB_USER: \${PG_USER}
      DB_POSTGRESDB_PASSWORD: \${PG_PASSWORD}

      GENERIC_TIMEZONE: Europe/Berlin
      TZ: Europe/Berlin

      N8N_ENCRYPTION_KEY: \${N8N_ENCRYPTION_KEY}

      # Telemetry/Template/Versionschecks aus
      N8N_DIAGNOSTICS_ENABLED: \${N8N_DIAGNOSTICS_ENABLED}
      N8N_VERSION_NOTIFICATIONS_ENABLED: \${N8N_VERSION_NOTIFICATIONS_ENABLED}
      N8N_TEMPLATES_ENABLED: \${N8N_TEMPLATES_ENABLED}

    volumes:
      - ./volumes/n8n-data:/home/node/.n8n
    networks:
      - customer-net

networks:
  customer-net:
    driver: bridge
YML"

# ---- IMPORTANT FIX: permissions BEFORE up ----
pct_exec "${CTID}" "mkdir -p /opt/customer-stack/volumes/n8n-data /opt/customer-stack/volumes/postgres/data"
pct_exec "${CTID}" "chown -R 1000:1000 /opt/customer-stack/volumes/n8n-data"
pct_exec "${CTID}" "chown -R 999:999 /opt/customer-stack/volumes/postgres/data || true"

# Pull + up
pct_exec "${CTID}" "cd /opt/customer-stack && docker compose pull"
pct_exec "${CTID}" "cd /opt/customer-stack && docker compose up -d"
pct_exec "${CTID}" "cd /opt/customer-stack && docker compose ps"

info "Step 7 OK: Stack deployed"
info "n8n intern: http://${CT_IP}:5678/"
info "n8n extern (geplant via OPNsense): https://${FQDN}"
info "Hinweis: Telemetrie/Template/Versionschecks sind deaktiviert (n8n docs)."

# Emit machine-readable JSON for automation (n8n can parse this)
emit_result_json \
  "CTID=${CTID}" \
  "CT_HOSTNAME=${CT_HOSTNAME}" \
  "CT_IP=${CT_IP}" \
  "VLAN=${VLAN}" \
  "FQDN=${FQDN}" \
  "N8N_INTERNAL_URL=http://${CT_IP}:5678/" \
  "N8N_EXTERNAL_URL=https://${FQDN}/" \
  "PG_DB=${PG_DB}" \
  "PG_USER=${PG_USER}" \
  "PG_PASSWORD=${PG_PASSWORD}" \
  "N8N_ENCRYPTION_KEY=${N8N_ENCRYPTION_KEY}"