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

CAMELEER_INSTALLER_VERSION="1.0.0"
CAMELEER_DEFAULT_VERSION="latest"
REGISTRY="gitea.siegeln.net/cameleer"

# --- Colors ---
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
BOLD='\033[1m'
NC='\033[0m'

# --- Defaults ---
DEFAULT_INSTALL_DIR="./cameleer"
DEFAULT_PUBLIC_PROTOCOL="https"
DEFAULT_ADMIN_USER="admin"
DEFAULT_TLS_MODE="self-signed"
DEFAULT_HTTP_PORT="80"
DEFAULT_HTTPS_PORT="443"
DEFAULT_LOGTO_CONSOLE_PORT="3002"
DEFAULT_LOGTO_CONSOLE_EXPOSED="true"
DEFAULT_VENDOR_ENABLED="false"
DEFAULT_VENDOR_USER="vendor"
DEFAULT_COMPOSE_PROJECT="cameleer-saas"
DEFAULT_DOCKER_SOCKET="/var/run/docker.sock"

# --- Config values (set by args/env/config/prompts) ---
# Save environment values before initialization (CLI args override these)
_ENV_PUBLIC_HOST="${PUBLIC_HOST:-}"
_ENV_PUBLIC_PROTOCOL="${PUBLIC_PROTOCOL:-}"
_ENV_POSTGRES_PASSWORD="${POSTGRES_PASSWORD:-}"
_ENV_CLICKHOUSE_PASSWORD="${CLICKHOUSE_PASSWORD:-}"
_ENV_TLS_MODE="${TLS_MODE:-}"
_ENV_CERT_FILE="${CERT_FILE:-}"
_ENV_KEY_FILE="${KEY_FILE:-}"
_ENV_CA_FILE="${CA_FILE:-}"
_ENV_HTTP_PORT="${HTTP_PORT:-}"
_ENV_HTTPS_PORT="${HTTPS_PORT:-}"
_ENV_LOGTO_CONSOLE_PORT="${LOGTO_CONSOLE_PORT:-}"
_ENV_LOGTO_CONSOLE_EXPOSED="${LOGTO_CONSOLE_EXPOSED:-}"
_ENV_VENDOR_ENABLED="${VENDOR_ENABLED:-}"
_ENV_VENDOR_USER="${VENDOR_USER:-}"
_ENV_VENDOR_PASS="${VENDOR_PASS:-}"
_ENV_MONITORING_NETWORK="${MONITORING_NETWORK:-}"
_ENV_COMPOSE_PROJECT="${COMPOSE_PROJECT:-}"
_ENV_DOCKER_SOCKET="${DOCKER_SOCKET:-}"
_ENV_NODE_TLS_REJECT="${NODE_TLS_REJECT:-}"

INSTALL_DIR=""
PUBLIC_HOST=""
PUBLIC_PROTOCOL=""
ADMIN_USER=""
ADMIN_PASS=""
TLS_MODE=""
CERT_FILE=""
KEY_FILE=""
CA_FILE=""
POSTGRES_PASSWORD=""
CLICKHOUSE_PASSWORD=""
HTTP_PORT=""
HTTPS_PORT=""
LOGTO_CONSOLE_PORT=""
LOGTO_CONSOLE_EXPOSED=""
VENDOR_ENABLED=""
VENDOR_USER=""
VENDOR_PASS=""
MONITORING_NETWORK=""
VERSION=""
COMPOSE_PROJECT=""
DOCKER_SOCKET=""
NODE_TLS_REJECT=""

# --- State ---
MODE=""  # simple, expert, silent
IS_RERUN=false
RERUN_ACTION=""  # upgrade, reconfigure, reinstall
CONFIRM_DESTROY=false
CONFIG_FILE_PATH=""

# --- Utility functions ---

log_info()    { echo -e "${GREEN}[INFO]${NC} $1"; }
log_warn()    { echo -e "${YELLOW}[WARN]${NC} $1"; }
log_error()   { echo -e "${RED}[ERROR]${NC} $1"; }
log_success() { echo -e "${GREEN}[OK]${NC} $1"; }

print_banner() {
  echo -e "${BOLD}"
  echo "  ____                      _                "
  echo " / ___|__ _ _ __ ___   ___ | | ___  ___ _ __ "
  echo "| |   / _\` | '_ \` _ \\ / _ \\| |/ _ \\/ _ \\ '__|"
  echo "| |__| (_| | | | | | |  __/| |  __/  __/ |   "
  echo " \\____\\__,_|_| |_| |_|\\___||_|\\___|\\___||_|   "
  echo ""
  echo "  SaaS Platform Installer v${CAMELEER_INSTALLER_VERSION}"
  echo -e "${NC}"
}

prompt() {
  local var_name="$1" prompt_text="$2" default="${3:-}"
  local input
  if [ -n "$default" ]; then
    read -rp "  $prompt_text [$default]: " input
    eval "$var_name=\"\${input:-$default}\""
  else
    read -rp "  $prompt_text: " input
    eval "$var_name=\"\$input\""
  fi
}

prompt_password() {
  local var_name="$1" prompt_text="$2" default="${3:-}"
  local input
  if [ -n "$default" ]; then
    read -rsp "  $prompt_text [${default:+********}]: " input
    echo
    eval "$var_name=\"\${input:-$default}\""
  else
    read -rsp "  $prompt_text: " input
    echo
    eval "$var_name=\"\$input\""
  fi
}

prompt_yesno() {
  local prompt_text="$1" default="${2:-n}"
  local input
  if [ "$default" = "y" ]; then
    read -rp "  $prompt_text [Y/n]: " input
    case "${input:-y}" in
      [nN]|[nN][oO]) return 1 ;; *) return 0 ;; esac
  else
    read -rp "  $prompt_text [y/N]: " input
    case "${input:-n}" in
      [yY]|[yY][eE][sS]) return 0 ;; *) return 1 ;; esac
  fi
}

generate_password() {
  openssl rand -base64 24 | tr -d '/+=' | head -c 32
}

# --- Argument parsing ---

parse_args() {
  while [ $# -gt 0 ]; do
    case "$1" in
      --silent)           MODE="silent" ;;
      --expert)           MODE="expert" ;;
      --config)           CONFIG_FILE_PATH="$2"; shift ;;
      --install-dir)      INSTALL_DIR="$2"; shift ;;
      --public-host)      PUBLIC_HOST="$2"; shift ;;
      --public-protocol)  PUBLIC_PROTOCOL="$2"; shift ;;
      --admin-user)       ADMIN_USER="$2"; shift ;;
      --admin-password)   ADMIN_PASS="$2"; shift ;;
      --tls-mode)         TLS_MODE="$2"; shift ;;
      --cert-file)        CERT_FILE="$2"; shift ;;
      --key-file)         KEY_FILE="$2"; shift ;;
      --ca-file)          CA_FILE="$2"; shift ;;
      --postgres-password)    POSTGRES_PASSWORD="$2"; shift ;;
      --clickhouse-password)  CLICKHOUSE_PASSWORD="$2"; shift ;;
      --http-port)        HTTP_PORT="$2"; shift ;;
      --https-port)       HTTPS_PORT="$2"; shift ;;
      --logto-console-port)      LOGTO_CONSOLE_PORT="$2"; shift ;;
      --logto-console-exposed)   LOGTO_CONSOLE_EXPOSED="$2"; shift ;;
      --vendor-enabled)   VENDOR_ENABLED="$2"; shift ;;
      --vendor-user)      VENDOR_USER="$2"; shift ;;
      --vendor-password)  VENDOR_PASS="$2"; shift ;;
      --monitoring-network) MONITORING_NETWORK="$2"; shift ;;
      --version)          VERSION="$2"; shift ;;
      --compose-project)  COMPOSE_PROJECT="$2"; shift ;;
      --docker-socket)    DOCKER_SOCKET="$2"; shift ;;
      --node-tls-reject)  NODE_TLS_REJECT="$2"; shift ;;
      --reconfigure)      RERUN_ACTION="reconfigure" ;;
      --reinstall)        RERUN_ACTION="reinstall" ;;
      --confirm-destroy)  CONFIRM_DESTROY=true ;;
      --help|-h)          show_help; exit 0 ;;
      *)
        log_error "Unknown option: $1"
        echo "  Run with --help for usage."
        exit 1
        ;;
    esac
    shift
  done
}

show_help() {
  echo "Usage: install.sh [OPTIONS]"
  echo ""
  echo "Modes:"
  echo "  (default)       Interactive simple mode (6 questions)"
  echo "  --expert        Interactive expert mode (all options)"
  echo "  --silent        Non-interactive, use defaults + overrides"
  echo ""
  echo "Options:"
  echo "  --install-dir DIR          Install directory (default: ./cameleer)"
  echo "  --public-host HOST         Public hostname (default: auto-detect)"
  echo "  --admin-user USER          Admin username (default: admin)"
  echo "  --admin-password PASS      Admin password (default: generated)"
  echo "  --tls-mode MODE            self-signed or custom (default: self-signed)"
  echo "  --cert-file PATH           TLS certificate file"
  echo "  --key-file PATH            TLS key file"
  echo "  --ca-file PATH             CA bundle file"
  echo "  --monitoring-network NAME  Docker network for Prometheus scraping"
  echo "  --version TAG              Image version tag (default: latest)"
  echo "  --config FILE              Load config from file"
  echo "  --help                     Show this help"
  echo ""
  echo "Expert options:"
  echo "  --postgres-password, --clickhouse-password, --http-port,"
  echo "  --https-port, --logto-console-port, --logto-console-exposed,"
  echo "  --vendor-enabled, --vendor-user, --vendor-password,"
  echo "  --compose-project, --docker-socket, --node-tls-reject"
  echo ""
  echo "Re-run options:"
  echo "  --reconfigure              Re-run interactive setup (preserve data)"
  echo "  --reinstall --confirm-destroy  Fresh install (destroys data)"
  echo ""
  echo "Config precedence: CLI flags > env vars > config file > defaults"
}

# --- Config file handling ---

load_config_file() {
  local file="$1"
  [ ! -f "$file" ] && return
  while IFS='=' read -r key value; do
    case "$key" in
      \#*|"") continue ;;
    esac
    key=$(echo "$key" | tr -d ' ')
    value=$(echo "$value" | sed 's/^[ ]*//;s/[ ]*$//')
    case "$key" in
      install_dir)          [ -z "$INSTALL_DIR" ] && INSTALL_DIR="$value" ;;
      public_host)          [ -z "$PUBLIC_HOST" ] && PUBLIC_HOST="$value" ;;
      public_protocol)      [ -z "$PUBLIC_PROTOCOL" ] && PUBLIC_PROTOCOL="$value" ;;
      admin_user)           [ -z "$ADMIN_USER" ] && ADMIN_USER="$value" ;;
      admin_password)       [ -z "$ADMIN_PASS" ] && ADMIN_PASS="$value" ;;
      tls_mode)             [ -z "$TLS_MODE" ] && TLS_MODE="$value" ;;
      cert_file)            [ -z "$CERT_FILE" ] && CERT_FILE="$value" ;;
      key_file)             [ -z "$KEY_FILE" ] && KEY_FILE="$value" ;;
      ca_file)              [ -z "$CA_FILE" ] && CA_FILE="$value" ;;
      postgres_password)    [ -z "$POSTGRES_PASSWORD" ] && POSTGRES_PASSWORD="$value" ;;
      clickhouse_password)  [ -z "$CLICKHOUSE_PASSWORD" ] && CLICKHOUSE_PASSWORD="$value" ;;
      http_port)            [ -z "$HTTP_PORT" ] && HTTP_PORT="$value" ;;
      https_port)           [ -z "$HTTPS_PORT" ] && HTTPS_PORT="$value" ;;
      logto_console_port)   [ -z "$LOGTO_CONSOLE_PORT" ] && LOGTO_CONSOLE_PORT="$value" ;;
      logto_console_exposed) [ -z "$LOGTO_CONSOLE_EXPOSED" ] && LOGTO_CONSOLE_EXPOSED="$value" ;;
      vendor_enabled)       [ -z "$VENDOR_ENABLED" ] && VENDOR_ENABLED="$value" ;;
      vendor_user)          [ -z "$VENDOR_USER" ] && VENDOR_USER="$value" ;;
      vendor_password)      [ -z "$VENDOR_PASS" ] && VENDOR_PASS="$value" ;;
      monitoring_network)   [ -z "$MONITORING_NETWORK" ] && MONITORING_NETWORK="$value" ;;
      version)              [ -z "$VERSION" ] && VERSION="$value" ;;
      compose_project)      [ -z "$COMPOSE_PROJECT" ] && COMPOSE_PROJECT="$value" ;;
      docker_socket)        [ -z "$DOCKER_SOCKET" ] && DOCKER_SOCKET="$value" ;;
      node_tls_reject)      [ -z "$NODE_TLS_REJECT" ] && NODE_TLS_REJECT="$value" ;;
    esac
  done < "$file"
}

load_env_overrides() {
  [ -z "$INSTALL_DIR" ] && INSTALL_DIR="${CAMELEER_INSTALL_DIR:-}"
  [ -z "$PUBLIC_HOST" ] && PUBLIC_HOST="$_ENV_PUBLIC_HOST"
  [ -z "$PUBLIC_PROTOCOL" ] && PUBLIC_PROTOCOL="$_ENV_PUBLIC_PROTOCOL"
  [ -z "$ADMIN_USER" ] && ADMIN_USER="${SAAS_ADMIN_USER:-}"
  [ -z "$ADMIN_PASS" ] && ADMIN_PASS="${SAAS_ADMIN_PASS:-}"
  [ -z "$TLS_MODE" ] && TLS_MODE="$_ENV_TLS_MODE"
  [ -z "$CERT_FILE" ] && CERT_FILE="$_ENV_CERT_FILE"
  [ -z "$KEY_FILE" ] && KEY_FILE="$_ENV_KEY_FILE"
  [ -z "$CA_FILE" ] && CA_FILE="$_ENV_CA_FILE"
  [ -z "$POSTGRES_PASSWORD" ] && POSTGRES_PASSWORD="$_ENV_POSTGRES_PASSWORD"
  [ -z "$CLICKHOUSE_PASSWORD" ] && CLICKHOUSE_PASSWORD="$_ENV_CLICKHOUSE_PASSWORD"
  [ -z "$HTTP_PORT" ] && HTTP_PORT="$_ENV_HTTP_PORT"
  [ -z "$HTTPS_PORT" ] && HTTPS_PORT="$_ENV_HTTPS_PORT"
  [ -z "$LOGTO_CONSOLE_PORT" ] && LOGTO_CONSOLE_PORT="$_ENV_LOGTO_CONSOLE_PORT"
  [ -z "$LOGTO_CONSOLE_EXPOSED" ] && LOGTO_CONSOLE_EXPOSED="$_ENV_LOGTO_CONSOLE_EXPOSED"
  [ -z "$VENDOR_ENABLED" ] && VENDOR_ENABLED="$_ENV_VENDOR_ENABLED"
  [ -z "$VENDOR_USER" ] && VENDOR_USER="$_ENV_VENDOR_USER"
  [ -z "$VENDOR_PASS" ] && VENDOR_PASS="$_ENV_VENDOR_PASS"
  [ -z "$MONITORING_NETWORK" ] && MONITORING_NETWORK="$_ENV_MONITORING_NETWORK"
  [ -z "$VERSION" ] && VERSION="${CAMELEER_VERSION:-}"
  [ -z "$COMPOSE_PROJECT" ] && COMPOSE_PROJECT="$_ENV_COMPOSE_PROJECT"
  [ -z "$DOCKER_SOCKET" ] && DOCKER_SOCKET="$_ENV_DOCKER_SOCKET"
  [ -z "$NODE_TLS_REJECT" ] && NODE_TLS_REJECT="$_ENV_NODE_TLS_REJECT"
}

# --- Prerequisites ---

check_prerequisites() {
  log_info "Checking prerequisites..."
  local errors=0

  if ! command -v docker >/dev/null 2>&1; then
    log_error "Docker is not installed."
    echo "  Install Docker Engine: https://docs.docker.com/engine/install/"
    errors=$((errors + 1))
  else
    local docker_version
    docker_version=$(docker version --format '{{.Server.Version}}' 2>/dev/null || echo "unknown")
    log_info "Docker version: $docker_version"
  fi

  if ! docker compose version >/dev/null 2>&1; then
    log_error "Docker Compose v2 is not available."
    echo "  'docker compose' subcommand required (not standalone docker-compose)."
    errors=$((errors + 1))
  else
    local compose_version
    compose_version=$(docker compose version --short 2>/dev/null || echo "unknown")
    log_info "Docker Compose version: $compose_version"
  fi

  if ! command -v openssl >/dev/null 2>&1; then
    log_error "OpenSSL is not installed (needed for password generation)."
    errors=$((errors + 1))
  fi

  local socket="${DOCKER_SOCKET:-$DEFAULT_DOCKER_SOCKET}"
  if [ ! -S "$socket" ]; then
    log_warn "Docker socket not found at $socket"
  fi

  check_port_available "${HTTP_PORT:-$DEFAULT_HTTP_PORT}" "HTTP"
  check_port_available "${HTTPS_PORT:-$DEFAULT_HTTPS_PORT}" "HTTPS"
  check_port_available "${LOGTO_CONSOLE_PORT:-$DEFAULT_LOGTO_CONSOLE_PORT}" "Logto Console"

  if [ $errors -gt 0 ]; then
    log_error "$errors prerequisite(s) not met. Please install missing dependencies and retry."
    exit 1
  fi
  log_success "All prerequisites met."
}

check_port_available() {
  local port="$1" name="$2"
  if command -v ss >/dev/null 2>&1; then
    if ss -tlnp 2>/dev/null | grep -q ":${port} "; then
      log_warn "Port $port ($name) is already in use."
    fi
  elif command -v netstat >/dev/null 2>&1; then
    if netstat -tlnp 2>/dev/null | grep -q ":${port} "; then
      log_warn "Port $port ($name) is already in use."
    fi
  fi
}

# --- Auto-detection ---

auto_detect() {
  if [ -z "$PUBLIC_HOST" ]; then
    PUBLIC_HOST=$(hostname -f 2>/dev/null || hostname 2>/dev/null || echo "localhost")
    local primary_ip
    primary_ip=$(ip route get 1.1.1.1 2>/dev/null | awk '{print $7; exit}' || true)
    if [ -n "$primary_ip" ]; then
      local rdns
      rdns=$(dig +short -x "$primary_ip" 2>/dev/null | sed 's/\.$//' || true)
      [ -n "$rdns" ] && PUBLIC_HOST="$rdns"
    fi
  fi

  if [ -z "$DOCKER_SOCKET" ]; then
    DOCKER_SOCKET="$DEFAULT_DOCKER_SOCKET"
  fi
}

detect_existing_install() {
  local dir="${INSTALL_DIR:-$DEFAULT_INSTALL_DIR}"
  if [ -f "$dir/cameleer.conf" ]; then
    IS_RERUN=true
    INSTALL_DIR="$dir"
    load_config_file "$dir/cameleer.conf"
  fi
}

# --- Interactive prompts ---

select_mode() {
  if [ -n "$MODE" ]; then return; fi
  echo ""
  echo "  Installation mode:"
  echo "    [1] Simple  — 6 questions, sensible defaults (recommended)"
  echo "    [2] Expert  — configure everything"
  echo ""
  local choice
  read -rp "  Select mode [1]: " choice
  case "${choice:-1}" in
    2) MODE="expert" ;;
    *) MODE="simple" ;;
  esac
}

run_simple_prompts() {
  echo ""
  echo -e "${BOLD}--- Simple Installation ---${NC}"
  echo ""

  prompt INSTALL_DIR "Install directory" "${INSTALL_DIR:-$DEFAULT_INSTALL_DIR}"
  prompt PUBLIC_HOST "Public hostname" "${PUBLIC_HOST:-localhost}"
  prompt ADMIN_USER "Admin username" "${ADMIN_USER:-$DEFAULT_ADMIN_USER}"

  if prompt_yesno "Auto-generate admin password?" "y"; then
    ADMIN_PASS=""
  else
    prompt_password ADMIN_PASS "Admin password" ""
  fi

  echo ""
  if prompt_yesno "Use custom TLS certificates? (no = self-signed)"; then
    TLS_MODE="custom"
    prompt CERT_FILE "Path to certificate file (PEM)" ""
    prompt KEY_FILE "Path to private key file (PEM)" ""
    if prompt_yesno "Include CA bundle?"; then
      prompt CA_FILE "Path to CA bundle (PEM)" ""
    fi
  else
    TLS_MODE="self-signed"
  fi

  echo ""
  prompt MONITORING_NETWORK "Monitoring network name (empty = skip)" ""
}

run_expert_prompts() {
  echo ""
  echo -e "${BOLD}--- Expert Installation ---${NC}"

  run_simple_prompts

  echo ""
  echo -e "${BOLD}  Credentials:${NC}"
  if prompt_yesno "Auto-generate database passwords?" "y"; then
    POSTGRES_PASSWORD=""
    CLICKHOUSE_PASSWORD=""
  else
    prompt_password POSTGRES_PASSWORD "PostgreSQL password" ""
    prompt_password CLICKHOUSE_PASSWORD "ClickHouse password" ""
  fi

  echo ""
  if prompt_yesno "Enable vendor account?"; then
    VENDOR_ENABLED="true"
    prompt VENDOR_USER "Vendor username" "${VENDOR_USER:-$DEFAULT_VENDOR_USER}"
    if prompt_yesno "Auto-generate vendor password?" "y"; then
      VENDOR_PASS=""
    else
      prompt_password VENDOR_PASS "Vendor password" ""
    fi
  else
    VENDOR_ENABLED="false"
  fi

  echo ""
  echo -e "${BOLD}  Networking:${NC}"
  prompt HTTP_PORT "HTTP port" "${HTTP_PORT:-$DEFAULT_HTTP_PORT}"
  prompt HTTPS_PORT "HTTPS port" "${HTTPS_PORT:-$DEFAULT_HTTPS_PORT}"
  prompt LOGTO_CONSOLE_PORT "Logto admin console port" "${LOGTO_CONSOLE_PORT:-$DEFAULT_LOGTO_CONSOLE_PORT}"

  echo ""
  echo -e "${BOLD}  Docker:${NC}"
  prompt VERSION "Image version/tag" "${VERSION:-$CAMELEER_DEFAULT_VERSION}"
  prompt COMPOSE_PROJECT "Compose project name" "${COMPOSE_PROJECT:-$DEFAULT_COMPOSE_PROJECT}"
  prompt DOCKER_SOCKET "Docker socket path" "${DOCKER_SOCKET:-$DEFAULT_DOCKER_SOCKET}"

  echo ""
  echo -e "${BOLD}  Logto:${NC}"
  if prompt_yesno "Expose Logto admin console externally?" "y"; then
    LOGTO_CONSOLE_EXPOSED="true"
  else
    LOGTO_CONSOLE_EXPOSED="false"
  fi
}

# --- Config merge and validation ---

merge_config() {
  : "${INSTALL_DIR:=$DEFAULT_INSTALL_DIR}"
  : "${PUBLIC_HOST:=localhost}"
  : "${PUBLIC_PROTOCOL:=$DEFAULT_PUBLIC_PROTOCOL}"
  : "${ADMIN_USER:=$DEFAULT_ADMIN_USER}"
  : "${TLS_MODE:=$DEFAULT_TLS_MODE}"
  : "${HTTP_PORT:=$DEFAULT_HTTP_PORT}"
  : "${HTTPS_PORT:=$DEFAULT_HTTPS_PORT}"
  : "${LOGTO_CONSOLE_PORT:=$DEFAULT_LOGTO_CONSOLE_PORT}"
  : "${LOGTO_CONSOLE_EXPOSED:=$DEFAULT_LOGTO_CONSOLE_EXPOSED}"
  : "${VENDOR_ENABLED:=$DEFAULT_VENDOR_ENABLED}"
  : "${VENDOR_USER:=$DEFAULT_VENDOR_USER}"
  : "${VERSION:=$CAMELEER_DEFAULT_VERSION}"
  : "${COMPOSE_PROJECT:=$DEFAULT_COMPOSE_PROJECT}"
  : "${DOCKER_SOCKET:=$DEFAULT_DOCKER_SOCKET}"

  if [ -z "$NODE_TLS_REJECT" ]; then
    if [ "$TLS_MODE" = "custom" ]; then
      NODE_TLS_REJECT="1"
    else
      NODE_TLS_REJECT="0"
    fi
  fi
}

validate_config() {
  local errors=0

  if [ "$TLS_MODE" = "custom" ]; then
    if [ ! -f "$CERT_FILE" ]; then
      log_error "Certificate file not found: $CERT_FILE"
      errors=$((errors + 1))
    fi
    if [ ! -f "$KEY_FILE" ]; then
      log_error "Key file not found: $KEY_FILE"
      errors=$((errors + 1))
    fi
    if [ -n "$CA_FILE" ] && [ ! -f "$CA_FILE" ]; then
      log_error "CA bundle not found: $CA_FILE"
      errors=$((errors + 1))
    fi
  fi

  for port_var in HTTP_PORT HTTPS_PORT LOGTO_CONSOLE_PORT; do
    local port_val
    eval "port_val=\$$port_var"
    if ! echo "$port_val" | grep -qE '^[0-9]+$' || [ "$port_val" -lt 1 ] || [ "$port_val" -gt 65535 ]; then
      log_error "Invalid port for $port_var: $port_val"
      errors=$((errors + 1))
    fi
  done

  if [ $errors -gt 0 ]; then
    log_error "Configuration validation failed."
    exit 1
  fi
  log_success "Configuration validated."
}

generate_passwords() {
  if [ -z "$ADMIN_PASS" ]; then
    ADMIN_PASS=$(generate_password)
    log_info "Generated admin password."
  fi
  if [ -z "$POSTGRES_PASSWORD" ]; then
    POSTGRES_PASSWORD=$(generate_password)
    log_info "Generated PostgreSQL password."
  fi
  if [ -z "$CLICKHOUSE_PASSWORD" ]; then
    CLICKHOUSE_PASSWORD=$(generate_password)
    log_info "Generated ClickHouse password."
  fi
  if [ "$VENDOR_ENABLED" = "true" ] && [ -z "$VENDOR_PASS" ]; then
    VENDOR_PASS=$(generate_password)
    log_info "Generated vendor password."
  fi
}