#!/usr/bin/env bash
set -e

version=0.5.0-dev.2
tarball=semgrep-v$version-ubuntu-16.04.tgz
sha256=3959f79b15c900d29567b6cb846831eb7da4c0a10969ffc98a1c9364ea377545
tarball_url=https://github.com/returntocorp/semgrep/releases/download/v$version/$tarball

check_version () {
    out="$(semgrep --version 2>/dev/null)" && [ "$out" = "$version" ]
}

if ! check_version; then
    tmpdir="$(mktemp -d)"
    trap 'rm -r "$tmpdir"' EXIT
    cd "$tmpdir"
    wget -nv "$tarball_url"
    sha256sum -c <<< "$sha256  $tarball"
    tar -xzf "$tarball" -C /usr/local/lib/
    ln -sf /usr/local/lib/semgrep-files/semgrep /usr/local/bin/semgrep
    ln -sf /usr/local/lib/semgrep-files/semgrep-core /usr/local/bin/semgrep-core
fi