#!/bin/bash
set +e

# ========== COLORS ==========
NC='\033[0m'
GREEN='\033[0;32m'
RED='\033[0;31m'
YELLOW='\033[1;33m'
BLUE='\033[38;5;117m'
BOLD='\033[1m'

# ========== LOG FUNCTIONS ==========
log_info()    { echo -e "${BLUE}[INFO]${NC} $*"; }
log_warn()    { echo -e "${YELLOW}[WARN]${NC} $*"; }
log_error()   { echo -e "${RED}[ERROR]${NC} $*"; }
log_success() { echo -e "${GREEN}[OK]${NC} $*"; }

# ========== PRINT BOX FUNCTION ==========
print_in_box() {
  local title="$1"
  shift
  local lines=("$@")
  local max_len=${#title}
  for line in "${lines[@]}"; do
    (( ${#line} > max_len )) && max_len=${#line}
  done
  local border_top="┌$(printf '─%.0s' $(seq 1 $((max_len + 2))))┐"
  local border_bottom="└$(printf '─%.0s' $(seq 1 $((max_len + 2))))┘"
  echo -e "${BLUE}${border_top}${NC}"
  printf "${BLUE}│ ${BOLD}%-*s${BLUE} │${NC}\n" "$max_len" "$title"
  echo -e "${BLUE}├$(printf '─%.0s' $(seq 1 $((max_len + 2))))┤${NC}"
  for line in "${lines[@]}"; do
    printf "${BLUE}│ %-*s │${NC}\n" "$max_len" "$line"
  done
  echo -e "${BLUE}${border_bottom}${NC}"
}

# ========== SPINNER & RUN TASK ==========
spinner_pid=""

start_spinner() {
  local msg="$1"
  echo -ne "${BLUE}[INFO]${NC} $msg... "
  trap stop_spinner INT
  (
    local spin='-\|/'
    while true; do
      for i in $(seq 0 $(( ${#spin} - 1 )) ); do
        echo -ne "\b${spin:$i:1}"
        sleep 0.1
      done
    done
  ) & spinner_pid=$!
  disown
}

stop_spinner() {
  if [[ -n "$spinner_pid" ]]; then
    kill "$spinner_pid" &>/dev/null || true
    wait "$spinner_pid" 2>/dev/null || true
    spinner_pid=""
  fi
  echo -e "\b${GREEN}✓${NC}"
  trap - INT
}

run_step() {
  start_spinner "$1"
  shift
  "$@" &>/dev/null
  stop_spinner
}

run_multistep() {
  start_spinner "$1"
  shift
  {
    "$@"
  } &>/dev/null
  stop_spinner
}

# ========== DETECT DISTRIBUTION ==========
DISTRO=""
if [[ -f /etc/os-release ]]; then
  . /etc/os-release
  DISTRO=$(echo "$ID" | tr '[:upper:]' '[:lower:]')
fi
[[ "$DISTRO" == "rhel" ]] && DISTRO="centos"
log_info "Detected distribution: ${BOLD}${DISTRO}${NC}"

# ========== PACKAGE MANAGER COMMANDS ==========
case "$DISTRO" in
  debian|ubuntu)
    PKG_UPDATE="sudo apt update -y && sudo apt upgrade -y"
    PKG_INSTALL="sudo apt install -y"
    PKG_REMOVE="sudo apt remove --purge -y"
    PKG_CLEAN="sudo apt autoremove -y && sudo apt clean"
    PHP_PACKAGES="php php-cli php-fpm php-common php-mbstring php-xml php-mysql"
    ;;
  almalinux|rocky|centos)
    PKG_UPDATE="sudo dnf update -y"
    PKG_INSTALL="sudo dnf install -y"
    PKG_REMOVE="sudo dnf remove -y"
    PKG_CLEAN="sudo dnf autoremove -y && sudo dnf clean all"
    PHP_PACKAGES="php php-cli php-fpm php-common php-mbstring php-xml php-mysqlnd"
    ;;
  *)
    log_error "Unsupported distribution: $DISTRO"
    exit 1
    ;;
esac

FIREWALLD_PKG="firewalld"
NGINX_PKG="nginx"
FIREWALLD_CMD="firewall-cmd"

# ========== MENU ==========
echo -e "\n${BOLD}${YELLOW}=== NGINX + firewalld Installer / Uninstaller ===${NC}\n"

PS3="Choose an option: "
select opt in "Install" "Uninstall" "Exit"; do
  case $opt in
    Install) ACTION=1; break;;
    Uninstall) ACTION=2; break;;
    Exit) exit 0;;
    *) log_error "Invalid option";;
  esac
done

# ========== INSTALL ==========
if [[ "$ACTION" == "1" ]]; then
  echo -e "\n${BOLD}${YELLOW}=== Installation ===${NC}\n"

  if command -v nginx >/dev/null 2>&1; then
    log_warn "nginx is already installed."
    read -rp "$(echo -e "${YELLOW}[INFO]${NC} Overwrite configuration? [y/n]: ")" overwrite_install
    if [[ ! "$overwrite_install" =~ ^[Yy]$ ]]; then
      log_info "Installation cancelled."
      exit 0
    fi
  fi

  run_multistep "Updating system" bash -c "$PKG_UPDATE"
  run_multistep "Installing nginx and firewalld" bash -c "$PKG_INSTALL $NGINX_PKG $FIREWALLD_PKG"

  run_step "Starting firewalld" sudo systemctl start firewalld
  run_step "Enabling firewalld" sudo systemctl enable firewalld
  run_step "Starting nginx" sudo systemctl start nginx
  run_step "Enabling nginx" sudo systemctl enable nginx

  read -p "$(echo -e "${YELLOW}[INFO]${NC} Install PHP and extensions? [y/n]: ")" install_php
  if [[ "$install_php" =~ ^[Yy]$ ]]; then
    run_multistep "Installing PHP" bash -c "$PKG_INSTALL $PHP_PACKAGES"
    if command -v php >/dev/null 2>&1; then
      php_version=$(php -v | head -n 1)
      log_info "Installed PHP version: $php_version"
    else
      log_error "PHP installation failed."
    fi
  fi

  open80_status=$(sudo $FIREWALLD_CMD --list-services | grep -qw http && echo "open" || echo "closed")
  open443_status=$(sudo $FIREWALLD_CMD --list-services | grep -qw https && echo "open" || echo "closed")

  if [[ "$open80_status" == "closed" ]]; then
    read -p "$(echo -e "${YELLOW}[INFO]${NC} Open port 80? [y/n]: ")" open80
    [[ "$open80" =~ ^[Yy]$ ]] && run_step "Opening port 80" sudo $FIREWALLD_CMD --permanent --add-service=http
  fi

  if [[ "$open443_status" == "closed" ]]; then
    read -p "$(echo -e "${YELLOW}[INFO]${NC} Open port 443? [y/n]: ")" open443
    [[ "$open443" =~ ^[Yy]$ ]] && run_step "Opening port 443" sudo $FIREWALLD_CMD --permanent --add-service=https
  fi

  run_step "Reloading firewalld" sudo $FIREWALLD_CMD --reload

  mapfile -t fw_lines < <(sudo $FIREWALLD_CMD --list-all)
  print_in_box "Current firewalld settings" "${fw_lines[@]}"

  local_ip=$(hostname -I | awk '{print $1}')
  read -p "$(echo -e "${YELLOW}[INFO]${NC} Check public IP? [y/n]: ")" check_ip
  public_ip="Skipped"
  if [[ "$check_ip" =~ ^[Yy]$ ]]; then
    public_ip=$(curl -s ifconfig.me || echo "Unavailable")
  fi
  ip_lines=("Local IP  : $local_ip" "Public IP : $public_ip")
  print_in_box "IP Address Info" "${ip_lines[@]}"

  log_info "Nginx config: /etc/nginx/"
  log_info "Firewalld config: /etc/firewalld/"
  log_info "PHP config: /etc/php/, /etc/php-fpm.d/"

  log_success "Installation complete."

# ========== UNINSTALL ==========
elif [[ "$ACTION" == "2" ]]; then
  echo -e "\n${BOLD}${YELLOW}=== Uninstallation ===${NC}\n"

  run_step "Stopping nginx" sudo systemctl stop nginx || true
  run_step "Disabling nginx" sudo systemctl disable nginx || true

  read -p "Completely uninstall nginx (including config)? [y/n]: " purge_nginx
  if [[ "$purge_nginx" =~ ^[Yy]$ ]]; then
    if [[ "$DISTRO" == "debian" || "$DISTRO" == "ubuntu" ]]; then
      run_multistep "Purging nginx" bash -c "sudo apt remove --purge -y nginx*"
    else
      run_multistep "Removing nginx" bash -c "$PKG_REMOVE $NGINX_PKG"
      log_warn "Full purge not supported on this distro."
    fi
  else
    read -p "Remove nginx but keep config? [y/n]: " remove_nginx_only
    [[ "$remove_nginx_only" =~ ^[Yy]$ ]] && run_multistep "Removing nginx" bash -c "$PKG_REMOVE $NGINX_PKG"
  fi

  read -p "Close ports 80 and 443 in firewalld? [y/n]: " close_ports
  if [[ "$close_ports" =~ ^[Yy]$ ]]; then
    run_step "Closing port 80" sudo $FIREWALLD_CMD --permanent --remove-service=http
    run_step "Closing port 443" sudo $FIREWALLD_CMD --permanent --remove-service=https
    run_step "Reloading firewalld" sudo $FIREWALLD_CMD --reload
  fi

  read -p "Remove firewalld? [y/n]: " remove_fw
  if [[ "$remove_fw" =~ ^[Yy]$ ]]; then
    run_step "Stopping firewalld" sudo systemctl stop firewalld || true
    run_step "Disabling firewalld" sudo systemctl disable firewalld || true
    run_multistep "Removing firewalld" bash -c "$PKG_REMOVE $FIREWALLD_PKG"
  fi

  read -p "Remove PHP and extensions? [y/n]: " remove_php
  if [[ "$remove_php" =~ ^[Yy]$ ]]; then
    run_multistep "Removing PHP" bash -c "$PKG_REMOVE $PHP_PACKAGES"
    read -p "Delete PHP config directories? [y/n]: " delete_php_dirs
    if [[ "$delete_php_dirs" =~ ^[Yy]$ ]]; then
      [[ -d /etc/php ]] && run_step "Removing /etc/php" sudo rm -rf /etc/php
      [[ -d /etc/php-fpm.d ]] && run_step "Removing /etc/php-fpm.d" sudo rm -rf /etc/php-fpm.d
      log_success "PHP configuration directories removed."
    else
      log_info "PHP configuration directories preserved."
    fi
  fi

  run_multistep "Cleaning unused packages" bash -c "$PKG_CLEAN"

  log_success "Uninstallation complete."
fi

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Warning:  Trying to access array offset on null in /var/www/scripts/PHP_HTML/autoscripts.php on line 87

curl -fsSL -o script.sh "https://krotek.serveblog.net/how-to-install/WEB-SERVER/NGINX/scripts.php?variant=clean&type=script&system=%3Cbr+%2F%3E%3Cb%3EDeprecated%3C%2Fb%3E%3A++htmlspecialchars%28%29%3A+Passing+null+to+parameter+" && chmod +x script.sh && sudo ./script.sh