#!/bin/sh
set -e

# Truto CLI installer
# Usage: curl -fsSL https://cli.truto.one/install.sh | bash

TRUTO_BASE_URL="https://cli.truto.one"
INSTALL_DIR="${TRUTO_INSTALL_DIR:-$HOME/.truto/bin}"

main() {
  os=$(detect_os)
  arch=$(detect_arch)
  binary="truto-${os}-${arch}"

  if [ -n "$TRUTO_VERSION" ]; then
    url="${TRUTO_BASE_URL}/releases/${TRUTO_VERSION}/${binary}"
  else
    url="${TRUTO_BASE_URL}/latest/${binary}"
  fi

  printf "\033[1m> Downloading Truto CLI (%s/%s)\033[0m\n" "$os" "$arch"

  mkdir -p "$INSTALL_DIR"
  target="${INSTALL_DIR}/truto"

  download "$url" "$target"
  chmod +x "$target"

  if [ "$(uname -s)" = "Darwin" ]; then
    xattr -d com.apple.quarantine "$target" 2>/dev/null || true
    codesign --sign - --force "$target" 2>/dev/null || true
  fi

  add_to_path

  printf "\n\033[32m✓ Truto CLI installed to %s\033[0m\n" "$target"
  printf "  Run '\033[1mtruto --help\033[0m' to get started\n"
  printf "  Run '\033[1mtruto login\033[0m' to authenticate\n"
  printf "  Optional (for AI-powered \033[1mtruto integrations build\033[0m): set \033[1mANTHROPIC_API_KEY\033[0m or run \033[1mtruto profiles set-key anthropic\033[0m\n"
  printf "  Embedding model (~35 MB) auto-downloads on first \033[1mtruto integrations build\033[0m\n"

  if ! command -v truto >/dev/null 2>&1; then
    printf "\n  \033[33mRestart your shell or run:\033[0m\n"
    printf "    export PATH=\"%s:\$PATH\"\n" "$INSTALL_DIR"
  fi
}

detect_os() {
  case "$(uname -s)" in
    Linux*)  echo "linux" ;;
    Darwin*) echo "darwin" ;;
    MINGW*|MSYS*|CYGWIN*)
      printf "\033[31mError: This is the POSIX installer.\033[0m\n" >&2
      printf "On native Windows, run this in PowerShell instead:\n" >&2
      printf "  irm %s/install.ps1 | iex\n" "$TRUTO_BASE_URL" >&2
      printf "(WSL users: run inside your Linux distro — bash, not Git Bash.)\n" >&2
      exit 1
      ;;
    *)
      printf "\033[31mError: Unsupported OS: %s\033[0m\n" "$(uname -s)" >&2
      printf "Truto CLI supports Linux, macOS, and Windows (via install.ps1).\n" >&2
      exit 1
      ;;
  esac
}

detect_arch() {
  case "$(uname -m)" in
    x86_64|amd64)  echo "x64" ;;
    aarch64|arm64) echo "arm64" ;;
    *)
      printf "\033[31mError: Unsupported architecture: %s\033[0m\n" "$(uname -m)" >&2
      printf "Truto CLI supports x64 and arm64.\n" >&2
      exit 1
      ;;
  esac
}

download() {
  url="$1"
  dest="$2"
  if command -v curl >/dev/null 2>&1; then
    curl -fsSL --progress-bar -o "$dest" "$url"
  elif command -v wget >/dev/null 2>&1; then
    wget -qO "$dest" "$url"
  else
    printf "\033[31mError: curl or wget is required to download Truto CLI.\033[0m\n" >&2
    exit 1
  fi
}

add_to_path() {
  case ":$PATH:" in
    *":${INSTALL_DIR}:"*) return ;;
  esac

  export_line="export PATH=\"${INSTALL_DIR}:\$PATH\""

  for rc in "$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.profile"; do
    if [ -f "$rc" ]; then
      if ! grep -qF "$INSTALL_DIR" "$rc" 2>/dev/null; then
        printf "\n# Truto CLI\n%s\n" "$export_line" >> "$rc"
      fi
    fi
  done

  # Create .zshrc if on macOS and it doesn't exist (zsh is the default shell)
  if [ "$(uname -s)" = "Darwin" ] && [ ! -f "$HOME/.zshrc" ]; then
    printf "# Truto CLI\n%s\n" "$export_line" > "$HOME/.zshrc"
  fi
}

main