#!/bin/sh
# ADI CLI Installer
# Usage: curl -fsSL https://get.withadi.dev | bash
#
# Environment variables:
#   ADI_VERSION      - Specific version (default: latest)
#   ADI_INSTALL_DIR  - Install directory (default: ~/.local/bin)
#   ADI_BASE_URL     - Override base URL (default: https://get.withadi.dev)

set -e

BASE_URL="${ADI_BASE_URL:-https://get.withadi.dev}"
BINARY="adi"

info()    { printf "\033[0;36m>\033[0m %s\n" "$1"; }
success() { printf "\033[0;32m✓\033[0m %s\n" "$1"; }
error()   { printf "\033[0;31m✗\033[0m %s\n" "$1" >&2; exit 1; }

detect_platform() {
  case "$(uname -s)" in
    Darwin) os="apple-darwin" ;;
    Linux)  os="unknown-linux-musl" ;;
    *)      error "Unsupported OS: $(uname -s)" ;;
  esac
  case "$(uname -m)" in
    x86_64|amd64)  arch="x86_64" ;;
    arm64|aarch64) arch="aarch64" ;;
    *)             error "Unsupported arch: $(uname -m)" ;;
  esac
  echo "${arch}-${os}"
}

fetch() {
  if command -v curl >/dev/null 2>&1; then
    curl -fsSL "$1"
  elif command -v wget >/dev/null 2>&1; then
    wget -qO- "$1"
  else
    error "curl or wget required"
  fi
}

download() {
  if command -v curl >/dev/null 2>&1; then
    curl -fsSL "$1" -o "$2"
  elif command -v wget >/dev/null 2>&1; then
    wget -q "$1" -O "$2"
  else
    error "curl or wget required"
  fi
}

main() {
  printf "\n\033[0;35mADI CLI Installer\033[0m\n\n"

  local platform=$(detect_platform)
  info "Platform: $platform"

  local version="${ADI_VERSION:-}"
  if [ -z "$version" ]; then
    info "Fetching latest version..."
    version=$(fetch "${BASE_URL}/releases/latest.txt" 2>/dev/null | tr -d '[:space:]')
    [ -z "$version" ] && error "Could not determine latest version"
  fi
  info "Version: $version"

  local install_dir="${ADI_INSTALL_DIR:-$HOME/.local/bin}"
  mkdir -p "$install_dir"

  local url="${BASE_URL}/releases/${version}/adi-${platform}.tar.gz"

  local tmp_dir=$(mktemp -d)
  trap "rm -rf '$tmp_dir'" EXIT

  info "Downloading..."
  download "$url" "$tmp_dir/adi.tar.gz"

  info "Extracting..."
  tar -xzf "$tmp_dir/adi.tar.gz" -C "$tmp_dir"

  chmod +x "$tmp_dir/$BINARY"
  mv "$tmp_dir/$BINARY" "$install_dir/$BINARY"

  success "Installed $BINARY ${version} to $install_dir/$BINARY"

  # Check PATH
  case ":$PATH:" in
    *":$install_dir:"*) ;;
    *)
      printf "\n\033[0;33m!\033[0m Add to PATH:\n"
      printf "  export PATH=\"%s:\$PATH\"\n" "$install_dir"
      ;;
  esac

  printf "\nRun: \033[0;36madi --version\033[0m\n\n"
}

main "$@"