#!/bin/sh
# Publishes the ISO images of the current version as a Gitea release:
#   release.sh <tag> <iso dir>
# Needs GITEA_TOKEN, GITEA_SERVER_URL and GITEA_REPOSITORY (owner/name); in CI
# the job provides them. Running it again for the same tag replaces the files.
set -eu

tag=$1
dir=$2
version=$(cat VERSION)
[ "$tag" = "v$version" ] || { echo "release: tag $tag does not match VERSION $version" >&2; exit 1; }

api=$GITEA_SERVER_URL/api/v1/repos/$GITEA_REPOSITORY
auth="Authorization: token $GITEA_TOKEN"
json() { python3 -c "import json,sys; d=json.load(sys.stdin); $1"; }

isos="dasos-$version-x86_64.iso dasos-server-$version-x86_64.iso"
cd "$dir"
sha256sum $isos >SHA256SUMS

if ! id=$(curl -fsS -H "$auth" "$api/releases/tags/$tag" 2>/dev/null | json 'print(d["id"])' 2>/dev/null); then
  id=$(curl -fsS -H "$auth" -H 'Content-Type: application/json' \
    -d "{\"tag_name\":\"$tag\",\"name\":\"Das OS $version\",\"body\":\"Desktop and server live ISO images. Check them with sha256sum -c SHA256SUMS.\"}" \
    "$api/releases" | json 'print(d["id"])')
  echo "release: created $tag (id $id)"
fi

# Files left from an earlier run for this tag are replaced
curl -fsS -H "$auth" "$api/releases/$id/assets" |
  json '[print(a["id"], a["name"]) for a in d]' |
  while read -r asset name; do
    case " $isos SHA256SUMS " in
      *" $name "*) curl -fsS -X DELETE -H "$auth" "$api/releases/$id/assets/$asset" ;;
    esac
  done

for f in $isos SHA256SUMS; do
  echo "release: uploading $f"
  curl -fsS -o /dev/null -H "$auth" -F "attachment=@$f" "$api/releases/$id/assets?name=$f"
done
echo "release: $GITEA_SERVER_URL/$GITEA_REPOSITORY/releases/tag/$tag"