#!/bin/sh
set -e

OS=$(uname -s | tr '[:upper:]' '[:lower:]')
ARCH=$(uname -m)
case "$ARCH" in
  x86_64) ARCH="amd64" ;;
  aarch64|arm64) ARCH="arm64" ;;
  *) echo "Unsupported architecture: $ARCH"; exit 1 ;;
esac

case "$OS" in
  linux|darwin) ;;
  *) echo "Unsupported OS: $OS (CostMeter supports Linux and macOS)"; exit 1 ;;
esac

REPO="ggonzalezaleman/costmeter-releases"
VERSION=$(curl -fsSL "https://api.github.com/repos/$REPO/releases/latest" 2>/dev/null | grep '"tag_name"' | sed -E 's/.*"v([^"]+)".*/\1/')

if [ -z "$VERSION" ]; then
  echo "Failed to fetch latest version. Check your internet connection."
  exit 1
fi

URL="https://github.com/$REPO/releases/download/v${VERSION}/costmeter_${VERSION}_${OS}_${ARCH}.tar.gz"
echo "Downloading CostMeter v${VERSION} for ${OS}/${ARCH}..."

TMPDIR=$(mktemp -d)
trap "rm -rf $TMPDIR" EXIT

curl -fsSL "$URL" -o "$TMPDIR/costmeter.tar.gz"
tar -xzf "$TMPDIR/costmeter.tar.gz" -C "$TMPDIR"

if [ -w /usr/local/bin ]; then
  mv "$TMPDIR/costmeter" /usr/local/bin/costmeter
else
  sudo mv "$TMPDIR/costmeter" /usr/local/bin/costmeter
fi

chmod +x /usr/local/bin/costmeter

echo ""
echo "✅ CostMeter v${VERSION} installed"
echo ""
echo "Get started:"
echo "  costmeter init              # interactive setup"
echo "  costmeter init --from-openclaw  # if you use OpenClaw"
echo ""