update-matrix-room.yml

on:
  push:
    tags:
      - '*.*'

name: Update Matrix Room Description
jobs:
  build:
    name: Update Matrix Room
    runs-on: ubuntu-latest
    steps:
      - name: update room description
        env:
          MATRIX_PASS: ${{ secrets.MATRIX_BOT_PASS }}
          MATRIX_USER: ${{ secrets.MATRIX_BOT_USER }}
          URL_LOGIN: 'https://matrix.org/_matrix/client/r0/login'
          URL_LOGOUT: 'https://matrix.org/_matrix/client/r0/logout'
          URL_TOPIC: 'https://matrix-client.matrix.org/_matrix/client/r0/rooms/!HBsLKoOIEEOkxAeQvC%3Amatrix.org/state/m.room.topic/'
        run: |
          TAGS="$(curl https://api.github.com/repos/opencast/opencast/tags | jq -r '.[].name')"
          MAJOR="$(echo "$TAGS" | sed 's/\..*$//' | sort --version-sort | tail -n1)"
          STABLE="$(echo "$TAGS" | sort --version-sort | tail -n1)"
          LEGACY="$(echo "$TAGS" | grep -v "^${MAJOR}" | sort --version-sort | tail -n1)"
          TOPIC='{"topic":"opencast.org\n–\nLatest releases: '"$STABLE, $LEGACY"'\n–\nJoin the technical meeting: Tuesday, 3:15 pm UTC at meet.opencast.video (p: welcome)"}'
          TOKEN="$(curl -s -XPOST -d '{"type":"m.login.password", "user":"'"$MATRIX_USER"'", "password":"'"$MATRIX_PASS"'", "initial_device_display_name":"GitHub Actions"}' "$URL_LOGIN" | jq -r .access_token)"
          curl -s -XPUT -d "${TOPIC}" "${URL_TOPIC}?access_token=${TOKEN}"
          curl -s -XPOST "${URL_LOGOUT}?access_token=${TOKEN}"