update-topics.yaml

name: Update release topics
on:
    workflow_dispatch:
        inputs:
            expected_status:
                description: What type of release is the next expected release
                required: true
                default: RC
                type: choice
                options:
                    - RC
                    - Release
            expected_date:
                description: Expected release date e.g. July 11th
                required: true
                type: string
concurrency: ${{ github.workflow }}
jobs:
    bot:
        name: Release topic update
        runs-on: ubuntu-latest
        environment: Matrix
        steps:
            - uses: actions/github-script@v6
              env:
                  HS_URL: ${{ secrets.BETABOT_HS_URL }}
                  LOBBY_ROOM_ID: ${{ secrets.ROOM_ID }}
                  PUBLIC_ROOM_ID: "!YTvKGNlinIzlkMTVRl:matrix.org"
                  ANNOUNCEMENT_ROOM_ID: "!bijaLdadorKgNGtHdA:matrix.org"
                  TOKEN: ${{ secrets.BETABOT_ACCESS_TOKEN }}
                  RELEASE_STATUS: "Release status: ${{ inputs.expected_status }} expected ${{ inputs.expected_date }}"
              with:
                  script: |
                      const { HS_URL, TOKEN, RELEASE_STATUS, LOBBY_ROOM_ID, PUBLIC_ROOM_ID, ANNOUNCEMENT_ROOM_ID } = process.env;

                      const repo = context.repo;
                      const { data } = await github.rest.repos.getLatestRelease({
                          owner: repo.owner,
                          repo: repo.repo,
                      });
                      console.log("Found latest version: " + data.tag_name);

                      const releaseTopic = `Stable: ${data.tag_name} | ${RELEASE_STATUS}`;
                      console.log("Release topic: " + releaseTopic);

                      const regex = /Stable: v(.+) \| Release status: (\w+) expected (\w+ \d+\w\w)/gm;

                      async function updateReleaseInTopic(roomId) {
                          const apiUrl = `${HS_URL}/_matrix/client/v3/rooms/${roomId}/state/m.room.topic/`;
                          const headers = {
                              "Content-Type": "application/json",
                              "Authorization": `Bearer ${TOKEN}`,
                          };
                          await fetch(`${HS_URL}/_matrix/client/v3/rooms/${roomId}/join`, {
                              method: "POST",
                              headers,
                              body: "{}",
                          });
                          
                          let res = await fetch(apiUrl, {
                              method: "GET",
                              headers,
                          });

                          if (!res.ok) {
                              console.log(roomId, "failed to fetch", await res.text());
                              return;
                          }

                          const data = await res.json();
                          console.log(roomId, "got event", data);
                          
                          const topic = data.topic.replace(regex, releaseTopic);
                          if (topic === data.topic) {
                              console.log(roomId, "nothing to do");
                              return;
                          }
                          if (data["org.matrix.msc3765.topic"]) {
                              data["org.matrix.msc3765.topic"].forEach(d => {
                                  d.body = d.body.replace(regex, releaseTopic);
                              });
                          }

                          res = await fetch(apiUrl, {
                              method: "PUT",
                              body: JSON.stringify({
                                  ...data,
                                  topic,
                              }),
                              headers,
                          });
                          
                          if (res.ok) {
                              console.log(roomId, "topic updated:", topic);
                          } else {
                              console.log(roomId, await res.text());
                          }
                      }

                      await updateReleaseInTopic(LOBBY_ROOM_ID);
                      await updateReleaseInTopic(PUBLIC_ROOM_ID);
                      await updateReleaseInTopic(ANNOUNCEMENT_ROOM_ID);