#!/bin/sh
# hproxy, HProxy's command-line tool 0.2.8: https://hproxy.com/tools/ai
# Usage: curl -fsSL https://hproxy.com/install.sh | sh
# Puts one file, hproxy, in ~/.local/bin (or $HPROXY_INSTALL_DIR) after checking its SHA-256.
# Everything runs from main, on the last line, so a download cut short runs nothing.
set -eu

main() {
  version="0.2.8"
  base="https://hproxy.com/downloads/cli/0.2.8"

  os=$(uname -s)
  arch=$(uname -m)

  # A Terminal under Rosetta says x86_64 on an Apple Silicon Mac: the native file is the right one.
  if [ "$os" = Darwin ] && [ "$arch" = x86_64 ] && [ "$(sysctl -n sysctl.proc_translated 2>/dev/null)" = 1 ]; then
    arch=arm64
  fi

  case "$os/$arch" in
    Darwin/arm64)                               file="hproxy-cli-macos-arm64"; sum="55b7059e064c564f5aa1187a7af99716b1e01da05be2d6cd04b5d85015148e95" ;;
    Darwin/x86_64)                              file="hproxy-cli-macos-x86_64"; sum="46005b5f230e0ae3c817f0ab2c8de5260c1699a62b0f91b58bf9329cda248c9c" ;;
    Linux/x86_64 | Linux/amd64)                 file="hproxy-cli-linux-x86_64"; sum="6ee3bcb7ba038d34c5dc6b5bc1c4c0e8081ae8c54cbe1748edd7573f4b0073b3" ;;
    Linux/aarch64 | Linux/arm64)                file="hproxy-cli-linux-arm64"; sum="dbdeae28c0894dc70d4bcb2ac5e5c03e77c849a0ca7698b4741cdf77bb2d02d8" ;;
    Linux/armv6l | Linux/armv7l | Linux/armv8l) file="hproxy-cli-linux-armv6"; sum="1a67176a38bb8068ed9688510c5a837da91ee6ffd9c42972bd87c0129ab998f7" ;;
    *)
      echo "hproxy: there is no build for $os $arch yet. On Windows, in PowerShell: irm https://hproxy.com/install.ps1 | iex" >&2
      exit 1
      ;;
  esac

  if command -v sha256sum > /dev/null 2>&1; then
    hasher="sha256sum"
  elif command -v shasum > /dev/null 2>&1; then
    hasher="shasum -a 256"
  else
    echo "hproxy: there is no sha256sum or shasum here to check the download. Nothing was installed." >&2
    exit 1
  fi

  dir="${HPROXY_INSTALL_DIR:-$HOME/.local/bin}"
  mkdir -p "$dir"
  tmp=$(mktemp "$dir/.hproxy.XXXXXX") || { echo "hproxy: cannot write to $dir." >&2; exit 1; }
  trap 'rm -f "$tmp"' EXIT
  trap 'exit 1' HUP INT TERM

  echo "Downloading hproxy $version ($file)..."
  curl -fsSL "$base/$file" -o "$tmp"

  # From stdin, so no file name is printed beside the sum (sha256sum escapes unusual names).
  got=$($hasher < "$tmp" | cut -d ' ' -f 1)
  if [ "$got" != "$sum" ]; then
    echo "hproxy: the download does not match its SHA-256. Nothing was installed." >&2
    exit 1
  fi

  chmod 755 "$tmp"
  mv -f "$tmp" "$dir/hproxy"
  trap - EXIT HUP INT TERM

  echo "Installed: $dir/hproxy"
  "$dir/hproxy" --version || true
  case ":$PATH:" in
    *":$dir:"*) ;;
    *)
      echo "$dir is not on your PATH yet. Add it, for example in ~/.zshrc or ~/.bashrc:"
      echo "  export PATH=\"$dir:\$PATH\""
      ;;
  esac
  echo "Try: hproxy list --country DE --protocol socks5 --limit 5"
}

main "$@"