#!/bin/sh
set -e

REPO="chris/agent-tui"
BASE_URL="https://gitea.yeeted.lol"
INSTALL_DIR="${INSTALL_DIR:-/usr/local/bin}"

OS=$(uname -s | tr '[:upper:]' '[:lower:]')
ARCH=$(uname -m)

case "$ARCH" in
  x86_64|amd64) ARCH="amd64" ;;
  arm64|aarch64) ARCH="arm64" ;;
  *) echo "Unsupported architecture: $ARCH" >&2; exit 1 ;;
esac

case "$OS" in
  darwin|linux) ;;
  *) echo "Unsupported OS: $OS" >&2; exit 1 ;;
esac

# Resolve tag: use argument, or fetch latest release
if [ -n "$1" ]; then
  TAG="$1"
else
  TAG=$(curl -fsSL "${BASE_URL}/api/v1/repos/${REPO}/releases?limit=1" \
    | grep -o '"tag_name":"[^"]*"' | head -1 | cut -d'"' -f4)
  if [ -z "$TAG" ]; then
    echo "Error: could not determine latest release" >&2
    exit 1
  fi
fi

BINARY="agent-tui-${OS}-${ARCH}"
URL="${BASE_URL}/${REPO}/releases/download/${TAG}/${BINARY}"

echo "Downloading ${BINARY} (${TAG})..."
TMP=$(mktemp)
trap 'rm -f "$TMP"' EXIT

if command -v curl >/dev/null 2>&1; then
  curl -fSL -o "$TMP" "$URL"
elif command -v wget >/dev/null 2>&1; then
  wget -qO "$TMP" "$URL"
else
  echo "Error: curl or wget required" >&2
  exit 1
fi

chmod +x "$TMP"

if [ -w "$INSTALL_DIR" ]; then
  mv "$TMP" "${INSTALL_DIR}/agent-tui"
else
  echo "Installing to ${INSTALL_DIR} (requires sudo)..."
  sudo mv "$TMP" "${INSTALL_DIR}/agent-tui"
fi

echo "Installed agent-tui ${TAG} to ${INSTALL_DIR}/agent-tui"