#!/usr/bin/env bash
set -euo pipefail

repo="${CODEX_TMUX_SCROLL_REPO:-GuanhuaYe/codex-tmux-scroll}"
version="${CODEX_TMUX_SCROLL_VERSION:-latest}"
install_root="${CODEX_TMUX_SCROLL_INSTALL_ROOT:-$HOME/.local/lib/codex-tmux-scroll}"
bin_dir="${CODEX_TMUX_SCROLL_BIN_DIR:-$HOME/.local/bin}"

os="$(uname -s | tr '[:upper:]' '[:lower:]')"
arch="$(uname -m)"

case "${os}:${arch}" in
  linux:x86_64 | linux:amd64)
    target="x86_64-unknown-linux-gnu"
    ;;
  *)
    echo "Unsupported platform: ${os}/${arch}" >&2
    echo "Currently supported: Linux x86_64" >&2
    exit 1
    ;;
esac

asset="codex-tmux-scroll-${target}.tar.gz"
if [[ "${version}" == "latest" ]]; then
  url="https://github.com/${repo}/releases/latest/download/${asset}"
else
  url="https://github.com/${repo}/releases/download/${version}/${asset}"
fi

tmpdir="$(mktemp -d)"
trap 'rm -rf "${tmpdir}"' EXIT

echo "Downloading ${url}"
curl -fL "${url}" -o "${tmpdir}/${asset}"

mkdir -p "${install_root}" "${bin_dir}"
tar -xzf "${tmpdir}/${asset}" -C "${install_root}"

install_root_quoted="$(printf '%q' "${install_root}")"

cat > "${bin_dir}/codex-tmux-scroll" <<WRAPPER
#!/usr/bin/env bash
set -euo pipefail

export CODEX_FULLSCREEN_MOUSE=1
exec ${install_root_quoted}/codex "\$@"
WRAPPER

chmod +x "${install_root}/codex" "${bin_dir}/codex-tmux-scroll"

echo "Installed codex-tmux-scroll to ${bin_dir}/codex-tmux-scroll"
case ":${PATH}:" in
  *":${bin_dir}:"*) ;;
  *)
    echo "Add ${bin_dir} to PATH to run codex-tmux-scroll directly." >&2
    ;;
esac