#!/bin/sh
# AgentPreso CLI installer
# Usage: curl -fsSL https://agentpreso.com/install.sh | sh

set -e

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

info() { printf "${BOLD}%s${RESET}\n" "$1"; }
success() { printf "${GREEN}%s${RESET}\n" "$1"; }
warn() { printf "${YELLOW}%s${RESET}\n" "$1"; }
error() { printf "${RED}%s${RESET}\n" "$1" >&2; exit 1; }

# Detect OS and architecture
detect_platform() {
  OS="$(uname -s)"
  ARCH="$(uname -m)"

  case "$OS" in
    Linux*)  OS="linux" ;;
    Darwin*) OS="macos" ;;
    MINGW*|MSYS*|CYGWIN*) OS="windows" ;;
    *) error "Unsupported OS: $OS" ;;
  esac

  case "$ARCH" in
    x86_64|amd64) ARCH="x64" ;;
    arm64|aarch64) ARCH="arm64" ;;
    *) error "Unsupported architecture: $ARCH" ;;
  esac

  # Windows only supports x64 for now
  if [ "$OS" = "windows" ]; then
    ARCH="x64"
  fi

  PLATFORM="${OS}-${ARCH}"
}

# Download binary
download() {
  URL="https://api.agentpreso.com/cli/download/${PLATFORM}"

  info "Downloading AgentPreso CLI for ${PLATFORM}..."

  if command -v curl >/dev/null 2>&1; then
    curl -fsSL "$URL" -o agentpreso
  elif command -v wget >/dev/null 2>&1; then
    wget -q "$URL" -O agentpreso
  else
    error "Neither curl nor wget found. Please install one of them."
  fi
}

# Install binary
install() {
  INSTALL_DIR="${INSTALL_DIR:-/usr/local/bin}"

  chmod +x agentpreso

  if [ -w "$INSTALL_DIR" ]; then
    mv agentpreso "$INSTALL_DIR/agentpreso"
  else
    info "Installing to $INSTALL_DIR (requires sudo)..."
    sudo mv agentpreso "$INSTALL_DIR/agentpreso"
  fi

  success "AgentPreso CLI installed to $INSTALL_DIR/agentpreso"
}

# Verify installation
verify() {
  if command -v agentpreso >/dev/null 2>&1; then
    VERSION="$(agentpreso --version 2>/dev/null || echo 'unknown')"
    success "Installation complete! Version: $VERSION"
    echo ""
    info "Get started:"
    echo "  agentpreso login     # Authenticate with your account"
    echo "  agentpreso init      # Create a new presentation"
    echo "  agentpreso --help    # Show all commands"
  else
    warn "Binary installed but not in PATH. Add $INSTALL_DIR to your PATH."
  fi
}

main() {
  info "AgentPreso CLI Installer"
  echo ""

  detect_platform
  download
  install
  verify
}

main