#!/usr/bin/env bash
#
# Attach files to the Gitea release of a tag, creating the release if needed.
# Used by .github/workflows/release.yml (Gitea Actions).
#
#   GITEA_API=https://git.example.nl/api/v1/repos/owner/repo GITEA_TOKEN=… \
#     tools/release-upload.sh v1.2.3 file…
#
# An asset that already exists under the same name is replaced, so a re-run
# of the workflow (e.g. after a failed image build) is safe.

set -euo pipefail

TAG="${1:?tag vereist}"
shift
: "${GITEA_API:?GITEA_API vereist}" "${GITEA_TOKEN:?GITEA_TOKEN vereist}"
AUTH=(-H "Authorization: token $GITEA_TOKEN")

if ! release="$(curl -fsS "${AUTH[@]}" "$GITEA_API/releases/tags/$TAG")"; then
  version="${TAG#v}"
  body="$(python3 -I -c 'import json, sys; print(json.dumps({"tag_name": sys.argv[1], "name": "Daynivo Kiosk OS " + sys.argv[2], "body": sys.argv[3]}))' \
    "$TAG" "$version" "Installeren of bijwerken: zie de README. Het SD-image volgt zodra het gebouwd is.")"
  release="$(curl -fsS "${AUTH[@]}" -H "Content-Type: application/json" -d "$body" "$GITEA_API/releases")"
fi
id="$(python3 -I -c 'import json, sys; print(json.load(sys.stdin)["id"])' <<<"$release")"

asset_id() {  # id of an existing asset with this name, or nothing
  python3 -I -c '
import json, sys
release = json.load(sys.stdin)
print(next((str(a["id"]) for a in release.get("assets") or [] if a["name"] == sys.argv[1]), ""))' "$1" <<<"$release"
}

for file in "$@"; do
  name="$(basename "$file")"
  old="$(asset_id "$name")"
  if [[ -n $old ]]; then
    curl -fsS "${AUTH[@]}" -X DELETE "$GITEA_API/releases/$id/assets/$old" >/dev/null
  fi
  echo "==> $name uploaden"
  curl -fsS "${AUTH[@]}" -F "attachment=@$file" "$GITEA_API/releases/$id/assets?name=$name" >/dev/null
done