setup.sh

#!/usr/bin/env bash
# Setup Telegram MTProto proxy: copy example.env to .env and generate SECRET.

set -e
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

if [[ -f .env ]]; then
  echo "'.env' already exists. Remove it first if you want to re-run setup."
  exit 1
fi

if [[ ! -f example.env ]]; then
  echo "example.env not found."
  exit 1
fi

# Generate 32 hex chars (16 bytes) for MTProto proxy secret
SECRET=$(openssl rand -hex 16)

cp example.env .env
if sed --version 2>/dev/null | grep -q GNU; then
  sed -i "s/^SECRET=.*/SECRET=$SECRET/" .env
else
  sed -i '' "s/^SECRET=.*/SECRET=$SECRET/" .env
fi

# Read ports from .env for the link
source .env 2>/dev/null || true
HTTPS_PORT="${HTTPS_PORT:-443}"

echo "Created .env with a generated SECRET."
echo ""
echo "Start the proxy:"
echo "  docker compose up -d"
echo ""
# Prefer real IP for QR so it can be scanned (try local then public)
SERVER_IP=""
if command -v hostname &>/dev/null; then
  SERVER_IP=$(hostname -I 2>/dev/null | awk '{print $1}')
fi
if [[ -z "$SERVER_IP" ]] && command -v curl &>/dev/null; then
  SERVER_IP=$(curl -s --max-time 2 -4 ifconfig.me 2>/dev/null || true)
fi
if [[ -z "$SERVER_IP" ]]; then
  SERVER_IP="YOUR_SERVER_IP"
fi

PROXY_LINK="https://t.me/proxy?server=$SERVER_IP&port=$HTTPS_PORT&secret=$SECRET"

echo "Your proxy link (replace YOUR_SERVER_IP with your server's IP or hostname):"
echo "  tg://proxy?server=YOUR_SERVER_IP&port=$HTTPS_PORT&secret=$SECRET"
echo "  $PROXY_LINK"
echo ""

# Install qrencode if missing (skip on error)
if ! command -v qrencode &>/dev/null; then
  if command -v apt-get &>/dev/null; then
    (apt-get update -qq 2>/dev/null && apt-get install -y -qq qrencode 2>/dev/null) || \
    (command -v sudo &>/dev/null && sudo apt-get update -qq 2>/dev/null && sudo apt-get install -y -qq qrencode 2>/dev/null) || true
  elif command -v apk &>/dev/null; then
    (apk add --no-cache qrencode 2>/dev/null) || (command -v sudo &>/dev/null && sudo apk add --no-cache qrencode 2>/dev/null) || true
  elif command -v dnf &>/dev/null; then
    (dnf install -y qrencode 2>/dev/null) || (command -v sudo &>/dev/null && sudo dnf install -y qrencode 2>/dev/null) || true
  elif command -v yum &>/dev/null; then
    (yum install -y qrencode 2>/dev/null) || (command -v sudo &>/dev/null && sudo yum install -y qrencode 2>/dev/null) || true
  fi
fi

if command -v qrencode &>/dev/null; then
  if [[ "$SERVER_IP" != "YOUR_SERVER_IP" ]]; then
    echo "QR code (scan with Telegram or camera):"
    qrencode -t ansiutf8 -- "$PROXY_LINK"
  else
    echo "Could not detect server IP; QR not generated. Install qrencode and run:"
    echo "  echo 'https://t.me/proxy?server=YOUR_IP&port=$HTTPS_PORT&secret=$SECRET' | qrencode -t ansiutf8"
  fi
else
  echo "Install qrencode to show a QR code: apt install qrencode"
fi