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

repo="${AYUGRAM_REPO:-AyuGram/AyuGramDesktop}"
api="https://api.github.com/repos/${repo}/releases/latest"

json="$(curl -fsSL --retry 5 --retry-all-errors \
  -H 'Accept: application/vnd.github+json' \
  -H 'X-GitHub-Api-Version: 2022-11-28' \
  "$api")"

tag="$(jq -r '.tag_name // empty' <<<"$json")"
prerelease="$(jq -r '.prerelease // false' <<<"$json")"
draft="$(jq -r '.draft // false' <<<"$json")"

[[ -n "$tag" ]] || { echo "GitHub did not return a release tag" >&2; exit 1; }
[[ "$draft" == "false" ]] || { echo "Latest release is a draft" >&2; exit 1; }
[[ "$prerelease" == "false" ]] || { echo "Latest release is a prerelease: $tag" >&2; exit 1; }

version="${tag#v}"
[[ "$version" =~ ^[0-9]+(\.[0-9]+)+([._-][0-9A-Za-z.-]+)?$ ]] || {
  echo "Unexpected release tag: $tag" >&2
  exit 1
}

archive="AyuGramDesktop-${version}-full.tar.gz"
asset_url="https://github.com/${repo}/releases/download/${tag}/${archive}"

echo "Latest stable release: ${tag}"
echo "Archive: ${asset_url}"

curl -fsSIL --retry 5 --retry-all-errors "$asset_url" >/dev/null

current=""
[[ -f .current-version ]] && current="$(tr -d '[:space:]' < .current-version)"

echo "Current published version: ${current:-none}"

if [[ "$version" == "$current" ]]; then
  echo "update=false" >> "$GITHUB_OUTPUT"
else
  echo "update=true" >> "$GITHUB_OUTPUT"
fi

echo "version=${version}" >> "$GITHUB_OUTPUT"
echo "tag=${tag}" >> "$GITHUB_OUTPUT"
echo "archive=${archive}" >> "$GITHUB_OUTPUT"