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

GREEN="\033[0;32m"
BLUE="\033[1;34m"
YELLOW="\033[1;33m"
RED="\033[0;31m"
BOLD="\033[1m"
RESET="\033[0m"

line() {
  echo -e "${BOLD}=====================================================================${RESET}"
}
line2() {
  echo -e "=====================================================================${RESET}"
}

info() {
  echo -e "${BLUE}➜${RESET} $1"
}

success() {
  echo -e "${GREEN}✔${RESET} $1"
}

warn() {
  echo -e "${YELLOW}⚠${RESET} $1"
}

error() {
  echo -e "${RED}✖${RESET} $1"
  exit 1
}
echo -e "
"
echo -e "NNNNNNNN        NNNNNNNN      888888888      NNNNNNNN        NNNNNNNN
N       N       N      N    88:::::::::88    N       N       N      N
N        N      N      N  88:::::::::::::88  N        N      N      N
N         N     N      N 8::::::88888::::::8 N         N     N      N
N          N    N      N 8:::::8     8:::::8 N          N    N      N
N           N   N      N 8:::::8     8:::::8 N           N   N      N
N      N     N  N      N  8:::::88888:::::8  N      N     N  N      N
N      N N    N N      N   8:::::::::::::8   N      N N    N N      N
N      N  N     N      N  8:::::88888:::::8  N      N  N     N      N
N      N   N           N 8:::::8     8:::::8 N      N   N           N
N      N    N          N 8:::::8     8:::::8 N      N    N          N
N      N     N         N 8:::::8     8:::::8 N      N     N         N
N      N      N        N 8::::::88888::::::8 N      N      N        N
N      N       N       N 88:::::::::::::88   N      N       N       N
N      N        N      N    88:::::::::88    N      N        N      N
NNNNNNNN         NNNNNNN      888888888      NNNNNNNN         NNNNNNN${RESET}"
line
echo -e "${BOLD}${BLUE}n8n-Installer
By-Mizael${RESET}"
line


command -v curl &>/dev/null || error "curl is not installed."
command -v git &>/dev/null || error "git is not installed."


echo ""
line2
info "Detecting latest versions..."
line2

LATEST_NVM=$(curl -fsSL https://api.github.com/repos/nvm-sh/nvm/releases/latest | grep -Po '"tag_name": "\Kv[^"]+')
LATEST_N8N=$(npm view n8n version 2>/dev/null || echo "unknown")

# NVM
export NVM_DIR="$HOME/.nvm"

if [[ -s "$NVM_DIR/nvm.sh" ]]; then
  # shellcheck disable=SC1090
  source "$NVM_DIR/nvm.sh"
  INSTALLED_NVM=$(nvm --version)

  if [[ "v$INSTALLED_NVM" != "$LATEST_NVM" ]]; then
    warn "NVM outdated (installed: v$INSTALLED_NVM, latest: $LATEST_NVM)"
    curl -fsSL "https://raw.githubusercontent.com/nvm-sh/nvm/${LATEST_NVM}/install.sh" | bash
    success "NVM updated to $LATEST_NVM"
  else
    success "NVM is up to date ($LATEST_NVM)"
  fi
else
  warn "NVM not found. Installing..."
  curl -fsSL "https://raw.githubusercontent.com/nvm-sh/nvm/${LATEST_NVM}/install.sh" | bash
  source "$NVM_DIR/nvm.sh"
  success "NVM installed ($LATEST_NVM)"
fi

# Node.js (LTS)
info "Checking Node.js LTS..."

nvm install --lts --default >/dev/null

NODE_INSTALLED=$(node -v)
success "Node.js ready ($NODE_INSTALLED)"

# n8n
if command -v n8n &>/dev/null; then
  INSTALLED_N8N=$(n8n --version)

  if [[ "$INSTALLED_N8N" != "$LATEST_N8N" ]]; then
    warn "n8n outdated (installed: $INSTALLED_N8N, latest: $LATEST_N8N)"
    npm install -g n8n >/dev/null
    success "n8n updated to $LATEST_N8N"
  else
    success "n8n is up to date ($INSTALLED_N8N)"
  fi
else
  warn "n8n not found. Installing..."
  npm install -g n8n >/dev/null
  line2
  success "n8n installed ($LATEST_N8N)"
  line2
fi


line
success "System is ready. No further action required."
line

exit 0