build_artifact_comment.yml

name: Write build artifact comments

on:
  workflow_run:
    workflows: ["Build"]
    types:
      - completed

permissions:
  contents: read

jobs:
  on-success:

    permissions:
      pull-requests: write

    runs-on: ubuntu-latest
    steps:
      - name: Get source code
        uses: actions/checkout@v4
        with:
          # To fetch tags
          fetch-depth: 0

      - name: 'Set plugin version environment variables'
        run: |
          TAG=$(git describe --tags $(git rev-list --tags --max-count=1))
          echo "VERSION=$(echo ${TAG} | awk -F. -v OFS=. 'NF==1{print ++$NF}; NF>1{if(length($NF+1)>length($NF))$(NF-1)++; $NF=sprintf("%0*d", length($NF), ($NF+1)%(10^length($NF))); print}')-alpha" >> $GITHUB_ENV
          echo "SHA_SHORT=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
      - name: 'Download artifact'
        id: download_artifact
        uses: actions/github-script@v7
        with:
          script: |
            let allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
               owner: context.repo.owner,
               repo: context.repo.repo,
               run_id: context.payload.workflow_run.id,
            });
            let matchArtifacts = allArtifacts.data.artifacts.filter((artifact) => {
              return artifact.name == 'felt_plugin.${{ env.VERSION }}'
            });
            matchArtifacts.forEach((artifact) => {
            });
            if (matchArtifacts.length>0)
            {
              let download = await github.rest.actions.downloadArtifact({
                 owner: context.repo.owner,
                 repo: context.repo.repo,
                 artifact_id: matchArtifacts[0].id,
                 archive_format: 'zip',
              });
              let fs = require('fs');
              fs.writeFileSync(`${process.env.GITHUB_WORKSPACE}/felt_plugin.${{ env.VERSION }}.zip`, Buffer.from(download.data));
              core.setOutput('artifact_id', matchArtifacts[0].id);
            }
            else
            {
              core.setOutput('artifact_id', 0);
            }

      - name: 'Unzip artifact'
        if: fromJSON(steps.download_artifact.outputs.artifact_id) > 0
        run: |
          unzip -n felt_plugin.${{ env.VERSION }}

      - name: 'Post artifact download link as comment on PR'
        if: fromJSON(steps.download_artifact.outputs.artifact_id) > 0
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            let fs = require('fs');
            let issue_number = Number(fs.readFileSync('./pr_number'));
            let git_sha = String(fs.readFileSync('./git_commit')).trim();
            const prComments = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: issue_number,
            });
            const PREFIX = "## Plugin ready!";
            let body = PREFIX + "\n\n" +
                "A test version of this PR is available for testing [here](https://github.com/" + context.repo.owner + "/" + context.repo.repo + "/suites/" +  context.payload.workflow_run.check_suite_id + "/artifacts/${{steps.download_artifact.outputs.artifact_id}}).";
            body += "\n\n*(Built from commit " + git_sha + ")*";

            const winBuildComment = prComments.data?.find(c => c.body.startsWith(PREFIX));
            if (!!winBuildComment) {
              // update the existing comment
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: winBuildComment.id,
                body: body
              });
            } else {
              // submit a new comment
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: issue_number,
                body: body
              });
            }