#!/bin/bash
# ============================================================
# Nexus Autoparts POS — Automated Installer v2.0
# Works on: Debian 12+, Ubuntu 22.04+, Raspberry Pi OS (64-bit)
# ============================================================
set -euo pipefail

# ----- Colors & helpers -----
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
BOLD='\033[1m'
NC='\033[0m'

INSTALL_DIR="/opt/nexus-pos"
LOG_FILE="/var/log/nexus-pos-install.log"

info()  { echo -e "${CYAN}[INFO]${NC}  $*"; }
ok()    { echo -e "${GREEN}[OK]${NC}    $*"; }
warn()  { echo -e "${YELLOW}[WARN]${NC}  $*"; }
err()   { echo -e "${RED}[ERROR]${NC} $*"; }
fatal() { err "$*"; exit 1; }

banner() {
    echo ""
    echo -e "${BOLD}${CYAN}"
    echo "  ========================================"
    echo "   Nexus Autoparts POS — Installer v2.0"
    echo "  ========================================"
    echo -e "${NC}"
}

log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" >> "$LOG_FILE"; }

cleanup_on_error() {
    err "Installation failed. Check $LOG_FILE for details."
    exit 1
}
trap cleanup_on_error ERR

# Generate a secure random password
generate_secret() {
    openssl rand -hex 32 2>/dev/null || python3 -c "import secrets; print(secrets.token_hex(32))"
}

# ============================================================
# 1. CHECK PREREQUISITES
# ============================================================
check_prerequisites() {
    info "Checking prerequisites..."

    if [[ "$(uname -s)" != "Linux" ]]; then
        fatal "This installer only supports Linux (Debian/Ubuntu/Raspberry Pi OS)."
    fi

    if [[ $EUID -ne 0 ]]; then
        fatal "This script must be run as root. Use: sudo bash install.sh"
    fi

    if [[ -f /etc/os-release ]]; then
        . /etc/os-release
        info "Detected OS: ${PRETTY_NAME:-$ID}"
        log "OS: ${PRETTY_NAME:-$ID}"
    fi

    IS_RPI=false
    if grep -qi "raspberry" /proc/cpuinfo 2>/dev/null || grep -qi "raspberry" /sys/firmware/devicetree/base/model 2>/dev/null; then
        IS_RPI=true
        info "Raspberry Pi detected."
    fi

    ARCH=$(uname -m)
    info "Architecture: $ARCH"

    if ! ping -c 1 -W 3 8.8.8.8 &>/dev/null; then
        warn "No internet connection detected. Some features may not work."
    fi

    ok "Prerequisites check passed."
}

# ============================================================
# 2. INSTALL SYSTEM PACKAGES
# ============================================================
install_packages() {
    info "Updating package lists..."
    apt-get update -qq >> "$LOG_FILE" 2>&1

    PACKAGES=(
        python3 python3-pip python3-venv
        postgresql postgresql-client
        redis-server
        git nginx curl
        libpq-dev gcc python3-dev
    )

    if [[ "$IS_RPI" == true ]]; then
        PACKAGES+=(libxml2-dev libxslt1-dev zlib1g-dev)
    fi

    info "Installing system packages..."
    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq "${PACKAGES[@]}" >> "$LOG_FILE" 2>&1

    # Install Node.js for WhatsApp bridge (LTS)
    if ! command -v node &>/dev/null; then
        info "Installing Node.js LTS..."
        curl -fsSL https://deb.nodesource.com/setup_20.x | bash - >> "$LOG_FILE" 2>&1
        apt-get install -y -qq nodejs >> "$LOG_FILE" 2>&1
    fi

    ok "System packages installed."
}

# ============================================================
# 3. CONFIGURE POSTGRESQL
# ============================================================
configure_postgresql() {
    info "Configuring PostgreSQL..."

    systemctl enable postgresql >> "$LOG_FILE" 2>&1
    systemctl start postgresql >> "$LOG_FILE" 2>&1

    info "Configuring Redis..."
    systemctl enable redis-server >> "$LOG_FILE" 2>&1
    systemctl start redis-server >> "$LOG_FILE" 2>&1

    # Generate random DB password
    DB_PASS=$(generate_secret)
    DB_USER="nexus"
    DB_NAME="nexus_autoparts"

    # Save credentials for later
    echo "DB_USER=$DB_USER" > /tmp/nexus_install_vars
    echo "DB_PASS=$DB_PASS" >> /tmp/nexus_install_vars
    echo "DB_NAME=$DB_NAME" >> /tmp/nexus_install_vars

    # Create user
    if sudo -u postgres psql -tAc "SELECT 1 FROM pg_roles WHERE rolname='${DB_USER}'" | grep -q 1; then
        info "PostgreSQL user '${DB_USER}' exists. Updating password..."
        sudo -u postgres psql -c "ALTER USER ${DB_USER} WITH PASSWORD '${DB_PASS}' CREATEDB;" >> "$LOG_FILE" 2>&1
    else
        sudo -u postgres psql -c "CREATE USER ${DB_USER} WITH PASSWORD '${DB_PASS}' CREATEDB;" >> "$LOG_FILE" 2>&1
        ok "PostgreSQL user '${DB_USER}' created."
    fi

    # Create master database
    if sudo -u postgres psql -tAc "SELECT 1 FROM pg_database WHERE datname='${DB_NAME}'" | grep -q 1; then
        info "Database '${DB_NAME}' already exists."
    else
        sudo -u postgres psql -c "CREATE DATABASE ${DB_NAME} OWNER ${DB_USER};" >> "$LOG_FILE" 2>&1
        ok "Database '${DB_NAME}' created."
    fi

    # Ensure md5 auth for local connections
    PG_HBA=$(sudo -u postgres psql -tAc "SHOW hba_file" 2>/dev/null | head -1 | xargs)
    if [[ -n "$PG_HBA" ]] && ! grep -q "local.*all.*${DB_USER}.*scram-sha-256" "$PG_HBA" 2>/dev/null; then
        # Add scram-sha-256 line before the first peer/trust line
        sed -i "/^local.*all.*all.*peer/i local   all   ${DB_USER}   scram-sha-256" "$PG_HBA" 2>/dev/null || true
        systemctl reload postgresql >> "$LOG_FILE" 2>&1
    fi

    ok "PostgreSQL configured."
}

# ============================================================
# 4. SETUP APPLICATION
# ============================================================
setup_app() {
    info "Setting up application in ${INSTALL_DIR}..."

    if [[ -d "${INSTALL_DIR}" ]]; then
        warn "${INSTALL_DIR} already exists. Updating in place..."
    else
        mkdir -p "${INSTALL_DIR}"
    fi

    # Copy from local source (the repo where this script lives)
    SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
    if [[ -f "${SCRIPT_DIR}/pos/app.py" ]]; then
        info "Copying from local source: ${SCRIPT_DIR}"
        rsync -a --delete --exclude='venv' --exclude='__pycache__' --exclude='.git' \
            "${SCRIPT_DIR}/" "${INSTALL_DIR}/" >> "$LOG_FILE" 2>&1
    else
        fatal "Could not find local source. Run this script from the project root."
    fi

    # Start Meilisearch and Metabase (optional but recommended)
    if command -v docker &>/dev/null; then
        info "Starting Meilisearch..."
        cd "${INSTALL_DIR}/docker" && docker compose -f docker-compose.meilisearch.yml up -d >> "$LOG_FILE" 2>&1
        ok "Meilisearch container started."
        info "Starting Metabase..."
        cd "${INSTALL_DIR}/docker" && docker compose -f docker-compose.metabase.yml up -d >> "$LOG_FILE" 2>&1
        ok "Metabase container started."
    else
        warn "Docker not found. Meilisearch and Metabase will not be available."
    fi

    # Create virtual environment
    python3 -m venv "${INSTALL_DIR}/venv" >> "$LOG_FILE" 2>&1
    "${INSTALL_DIR}/venv/bin/pip" install --upgrade pip >> "$LOG_FILE" 2>&1
    "${INSTALL_DIR}/venv/bin/pip" install -r "${INSTALL_DIR}/pos/requirements.txt" >> "$LOG_FILE" 2>&1
    "${INSTALL_DIR}/venv/bin/pip" install gunicorn >> "$LOG_FILE" 2>&1

    ok "Application files and Python dependencies ready."
}

# ============================================================
# 5. INTERACTIVE SETUP
# ============================================================
interactive_setup() {
    echo ""
    echo -e "${BOLD}${CYAN}--- Business Setup ---${NC}"
    echo ""

    echo -en "${BOLD}  Business name${NC} (e.g., Refaccionaria Lopez): "
    read -r BUSINESS_NAME
    [[ -z "$BUSINESS_NAME" ]] && BUSINESS_NAME="Mi Refaccionaria"

    echo -en "${BOLD}  RFC${NC} (optional): "
    read -r BUSINESS_RFC

    echo -en "${BOLD}  Owner name${NC}: "
    read -r OWNER_NAME
    [[ -z "$OWNER_NAME" ]] && OWNER_NAME="Administrador"

    while true; do
        echo -en "${BOLD}  Owner PIN${NC} (4 digits): "
        read -rs OWNER_PIN
        echo ""
        [[ "$OWNER_PIN" =~ ^[0-9]{4}$ ]] && break
        warn "PIN must be exactly 4 digits."
    done

    DEFAULT_IP=$(hostname -I 2>/dev/null | awk '{print $1}')
    echo -en "${BOLD}  Domain or IP${NC} [${DEFAULT_IP:-localhost}]: "
    read -r ACCESS_HOST
    [[ -z "$ACCESS_HOST" ]] && ACCESS_HOST="${DEFAULT_IP:-localhost}"

    echo ""
    echo -e "${BOLD}  Summary:${NC}"
    echo "    Business:  ${BUSINESS_NAME}"
    echo "    RFC:       ${BUSINESS_RFC:-N/A}"
    echo "    Owner:     ${OWNER_NAME}"
    echo "    PIN:       ****"
    echo "    Access:    http://${ACCESS_HOST}"
    echo ""
    echo -en "${BOLD}  Proceed? [Y/n]: ${NC}"
    read -r confirm
    [[ "${confirm,,}" == "n" ]] && fatal "Installation cancelled."
}

# ============================================================
# 6. LOAD MASTER SCHEMA & SEED DATA
# ============================================================
load_master_schema() {
    info "Loading master database schema (vehicles + catalog)..."

    source /tmp/nexus_install_vars

    # Load PostgreSQL schema (no TecDoc)
    sudo -u postgres psql "${DB_NAME}" -f "${INSTALL_DIR}/sql/schema_master_postgres.sql" >> "$LOG_FILE" 2>&1

    # Load initial catalog seed (categories, brands, models, years)
    sudo -u postgres psql "${DB_NAME}" -f "${INSTALL_DIR}/pos/seed/initial_catalog.sql" >> "$LOG_FILE" 2>&1

    ok "Master schema and seed data loaded."
}

# ============================================================
# 7. PROVISION TENANT
# ============================================================
provision_tenant() {
    info "Provisioning tenant database..."

    source /tmp/nexus_install_vars

    cd "${INSTALL_DIR}/pos"

    export MASTER_DB_URL="postgresql://${DB_USER}:${DB_PASS}@localhost/${DB_NAME}"
    export TENANT_DB_URL_TEMPLATE="postgresql://${DB_USER}:${DB_PASS}@localhost/{db_name}"
    export POS_JWT_SECRET="$(generate_secret)"
    export DATABASE_URL="${MASTER_DB_URL}"
    export JWT_SECRET="${POS_JWT_SECRET}"

    # Build provision script
    cat > /tmp/_nexus_provision.py << 'PYEOF'
import sys, os
sys.path.insert(0, os.environ['INSTALL_DIR'] + '/pos')
os.chdir(os.environ['INSTALL_DIR'] + '/pos')

from services.tenant_manager import provision_tenant

result = provision_tenant(
    name=os.environ['NX_BUSINESS'],
    rfc=os.environ.get('NX_RFC') or None,
    owner_name=os.environ['NX_OWNER'],
    owner_pin=os.environ['NX_PIN']
)
print(f"Tenant created: id={result['tenant_id']}, db={result['db_name']}, subdomain={result['subdomain']}")
PYEOF

    INSTALL_DIR="${INSTALL_DIR}" \
    NX_BUSINESS="$BUSINESS_NAME" \
    NX_RFC="$BUSINESS_RFC" \
    NX_OWNER="$OWNER_NAME" \
    NX_PIN="$OWNER_PIN" \
    "${INSTALL_DIR}/venv/bin/python3" /tmp/_nexus_provision.py >> "$LOG_FILE" 2>&1

    rm -f /tmp/_nexus_provision.py

    ok "Tenant '${BUSINESS_NAME}' provisioned."
}

# ============================================================
# 8. APPLY MIGRATIONS TO ALL TENANTS
# ============================================================
apply_migrations() {
    info "Applying database migrations..."

    source /tmp/nexus_install_vars
    export MASTER_DB_URL="postgresql://${DB_USER}:${DB_PASS}@localhost/${DB_NAME}"
    export TENANT_DB_URL_TEMPLATE="postgresql://${DB_USER}:${DB_PASS}@localhost/{db_name}"

    cd "${INSTALL_DIR}/pos"

    # Run master migrations
    "${INSTALL_DIR}/venv/bin/python3" -c "
import sys
sys.path.insert(0, '${INSTALL_DIR}/pos')
from migrations.runner_master import run_master_migrations
run_master_migrations()
" >> "$LOG_FILE" 2>&1

    # Run tenant migrations
    "${INSTALL_DIR}/venv/bin/python3" -c "
import sys
sys.path.insert(0, '${INSTALL_DIR}/pos')
from migrations.runner import run_migrations
run_migrations()
" >> "$LOG_FILE" 2>&1

    ok "All migrations applied."
}

# ============================================================
# 9. GENERATE .env FILE
# ============================================================
 generate_env() {
    info "Generating environment configuration..."

    source /tmp/nexus_install_vars

    POS_SECRET=$(generate_secret)
    WEB_SECRET=$(generate_secret)
    WPP_SECRET=$(generate_secret)

    cat > "${INSTALL_DIR}/.env" << ENVEOF
# Nexus Autoparts — Generated on $(date)
# DO NOT COMMIT THIS FILE TO GIT

DATABASE_URL=postgresql://${DB_USER}:${DB_PASS}@localhost/${DB_NAME}
MASTER_DB_URL=postgresql://${DB_USER}:${DB_PASS}@localhost/${DB_NAME}
TENANT_DB_URL_TEMPLATE=postgresql://${DB_USER}:${DB_PASS}@localhost/{db_name}

JWT_SECRET=${WEB_SECRET}
POS_JWT_SECRET=${POS_SECRET}

WHATSAPP_BRIDGE_KEY=${WPP_SECRET}

REDIS_URL=redis://localhost:6379/0
REDIS_ENABLED=true
REDIS_STOCK_TTL=300

MEILI_URL=http://localhost:7700
MEILI_API_KEY=$(generate_secret)

METABASE_URL=http://localhost:3000
METABASE_ADMIN_EMAIL=admin@${SUBDOMAIN}.local
METABASE_ADMIN_PASS=$(generate_secret)
METABASE_DB_PASS=$(generate_secret)

DEFAULT_CURRENCY=MXN
EXCHANGE_RATE_USD_MXN=17.5
ENVEOF

    chmod 600 "${INSTALL_DIR}/.env"
    ok ".env file created with secure secrets."
}

# ============================================================
# 10. CREATE SYSTEMD SERVICES
# ============================================================
create_systemd_services() {
    info "Creating systemd services..."

    source /tmp/nexus_install_vars

    # Create nexus user
    if ! id -u nexus &>/dev/null; then
        useradd -r -s /bin/false -d "${INSTALL_DIR}" nexus >> "$LOG_FILE" 2>&1
    fi
    chown -R nexus:nexus "${INSTALL_DIR}"

    # POS Service
    cat > /etc/systemd/system/nexus-pos.service << SERVICEEOF
[Unit]
Description=Nexus Autoparts POS
After=network.target postgresql.service redis-server.service
Wants=postgresql.service redis-server.service

[Service]
Type=notify
User=nexus
Group=nexus
WorkingDirectory=${INSTALL_DIR}/pos
Environment=PATH=${INSTALL_DIR}/venv/bin:/usr/bin:/bin
Environment=PYTHONUNBUFFERED=1
EnvironmentFile=${INSTALL_DIR}/.env
ExecStartPre=/bin/mkdir -p /var/log/nexus-pos
ExecStart=${INSTALL_DIR}/venv/bin/gunicorn -c ${INSTALL_DIR}/pos/gunicorn.conf.py "app:create_app()"
Restart=always
RestartSec=5
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target
SERVICEEOF

    # Web Dashboard Service
    cat > /etc/systemd/system/nexus-web.service << SERVICEEOF
[Unit]
Description=Nexus Autoparts Web Publica
After=network.target postgresql.service redis-server.service
Wants=postgresql.service redis-server.service

[Service]
Type=simple
User=nexus
Group=nexus
WorkingDirectory=${INSTALL_DIR}/dashboard
Environment=PATH=${INSTALL_DIR}/venv/bin:/usr/bin:/bin
Environment=PYTHONUNBUFFERED=1
EnvironmentFile=${INSTALL_DIR}/.env
ExecStart=${INSTALL_DIR}/venv/bin/python3 server.py
Restart=always
RestartSec=5
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target
SERVICEEOF

    # WhatsApp Bridge Service
    cat > /etc/systemd/system/nexus-whatsapp.service << SERVICEEOF
[Unit]
Description=Nexus WhatsApp Bridge (Baileys)
After=network.target

[Service]
Type=simple
User=nexus
Group=nexus
WorkingDirectory=${INSTALL_DIR}
Environment=NODE_ENV=production
ExecStart=/usr/bin/node ${INSTALL_DIR}/pos/whatsapp-bridge-server.js
Restart=always
RestartSec=10
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target
SERVICEEOF

    systemctl daemon-reload >> "$LOG_FILE" 2>&1
    ok "Systemd services created: nexus-pos, nexus-web, nexus-whatsapp"
}

# ============================================================
# 11. CONFIGURE NGINX
# ============================================================
configure_nginx() {
    info "Configuring nginx..."

    rm -f /etc/nginx/sites-enabled/default 2>/dev/null || true

    cat > /etc/nginx/sites-available/nexus << 'NGINXEOF'
# Rate limiting zone
limit_req_zone $binary_remote_addr zone=pos_login:10m rate=10r/s;

upstream nexus_main {
    server 127.0.0.1:5000;
}

upstream nexus_pos {
    server 127.0.0.1:5001;
}

server {
    listen 80;
    server_name _;  # Catch-all

    client_max_body_size 20M;

    add_header X-Content-Type-Options nosniff always;
    add_header X-Frame-Options SAMEORIGIN always;

    # Web publica / landing
    location / {
        proxy_pass http://nexus_main;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # POS paths
    location /pos/ {
        proxy_pass http://nexus_pos;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # Rate limit login endpoint
    location /pos/api/auth/login {
        limit_req zone=pos_login burst=5 nodelay;
        proxy_pass http://nexus_pos;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # Health check
    location /health {
        proxy_pass http://nexus_pos/pos/health;
    }
}
NGINXEOF

    ln -sf /etc/nginx/sites-available/nexus /etc/nginx/sites-enabled/nexus

    if nginx -t >> "$LOG_FILE" 2>&1; then
        ok "Nginx configuration valid."
    else
        err "Nginx configuration test failed. Check $LOG_FILE."
        return 1
    fi
}

# ============================================================
# 12. START SERVICES
# ============================================================
start_services() {
    info "Starting services..."

    systemctl enable postgresql >> "$LOG_FILE" 2>&1

    systemctl enable nginx >> "$LOG_FILE" 2>&1
    systemctl restart nginx >> "$LOG_FILE" 2>&1
    ok "Nginx started."

    systemctl enable nexus-pos >> "$LOG_FILE" 2>&1
    systemctl start nexus-pos >> "$LOG_FILE" 2>&1
    ok "Nexus POS service started."

    systemctl enable nexus-web >> "$LOG_FILE" 2>&1
    systemctl start nexus-web >> "$LOG_FILE" 2>&1
    ok "Nexus Web service started."

    systemctl enable nexus-whatsapp >> "$LOG_FILE" 2>&1
    systemctl start nexus-whatsapp >> "$LOG_FILE" 2>&1
    ok "Nexus WhatsApp bridge started."

    sleep 3

    # Verify POS is running
    if systemctl is-active --quiet nexus-pos; then
        ok "All services are running."
    else
        warn "nexus-pos may not have started correctly. Check: journalctl -u nexus-pos"
    fi
}

# ============================================================
# 13. HEALTH CHECK
# ============================================================
run_health_check() {
    info "Running post-installation health check..."

    source /tmp/nexus_install_vars
    export MASTER_DB_URL="postgresql://${DB_USER}:${DB_PASS}@localhost/${DB_NAME}"
    export TENANT_DB_URL_TEMPLATE="postgresql://${DB_USER}:${DB_PASS}@localhost/{db_name}"
    export DATABASE_URL="${MASTER_DB_URL}"

    cd "${INSTALL_DIR}"
    "${INSTALL_DIR}/venv/bin/pip" install requests >> "$LOG_FILE" 2>&1 || true

    if "${INSTALL_DIR}/venv/bin/python3" "${INSTALL_DIR}/scripts/health_check.py"; then
        ok "Health check passed."
    else
        warn "Health check found issues. Review output above."
    fi
}

# ============================================================
# 14. PRINT SUCCESS
# ============================================================
print_success() {
    source /tmp/nexus_install_vars

    echo ""
    echo -e "${BOLD}${GREEN}"
    echo "  ========================================"
    echo "   Installation Complete!"
    echo "  ========================================"
    echo -e "${NC}"
    echo ""
    echo -e "  ${BOLD}POS Login:${NC}      http://${ACCESS_HOST}/pos/login"
    echo -e "  ${BOLD}Web Catalog:${NC}    http://${ACCESS_HOST}/"
    echo -e "  ${BOLD}Business:${NC}      ${BUSINESS_NAME}"
    echo -e "  ${BOLD}Owner:${NC}         ${OWNER_NAME}"
    echo -e "  ${BOLD}PIN:${NC}           ${OWNER_PIN}"
    echo ""
    echo -e "  ${BOLD}Services:${NC}"
    echo "    POS:        systemctl status nexus-pos"
    echo "    Web:        systemctl status nexus-web"
    echo "    WhatsApp:   systemctl status nexus-whatsapp"
    echo "    Logs:       journalctl -u nexus-pos -f"
    echo ""
    echo -e "  ${BOLD}Database:${NC}"
    echo "    Host:       localhost"
    echo "    User:       ${DB_USER}"
    echo "    Pass:       ${DB_PASS}"
    echo "    Master DB:  ${DB_NAME}"
    echo ""
    echo -e "  ${BOLD}Files:${NC}         ${INSTALL_DIR}/"
    echo -e "  ${BOLD}.env:${NC}          ${INSTALL_DIR}/.env"
    echo ""
    echo -e "  ${YELLOW}Save the database password securely!${NC}"
    echo ""
}

# ============================================================
# MAIN
# ============================================================
main() {
    banner
    mkdir -p "$(dirname "$LOG_FILE")"
    echo "=== Nexus POS Install v2.0 started at $(date) ===" > "$LOG_FILE"

    check_prerequisites
    install_packages
    configure_postgresql
    setup_app
    interactive_setup
    load_master_schema
    provision_tenant
    apply_migrations
    generate_env
    create_systemd_services
    configure_nginx
    start_services
    run_health_check
    print_success

    # Cleanup temp vars
    rm -f /tmp/nexus_install_vars

    log "Installation completed successfully."
}

main "$@"