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

tag="${1:-}"

if [[ ! "${tag}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+(_[0-9]+)$ ]]; then
  echo "Invalid release tag '${tag}'. Expected vMAJOR.MINOR.PATCH_WRAPPER, for example v0.2.0_0." >&2
  exit 1
fi

package_version="$({
  sed -n "s/^[[:space:]]*version: '\([^']*\)'.*/\1/p" \
    startos/versions/current.ts
} | head -n 1)"

if [[ -z "${package_version}" ]]; then
  echo "Could not read the package version from startos/versions/current.ts." >&2
  exit 1
fi

expected_tag="v${package_version/:/_}"

if [[ "${tag}" != "${expected_tag}" ]]; then
  echo "Release tag '${tag}' does not match package version '${package_version}'." >&2
  echo "Expected tag: ${expected_tag}" >&2
  exit 1
fi

echo "Release tag ${tag} matches package version ${package_version}."