fix: preserve authored Markdown across rendering pipelines #82
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| name: Contributor access | |
| on: | |
| issue_comment: | |
| types: [created] | |
| discussion_comment: | |
| types: [created] | |
| permissions: {} | |
| jobs: | |
| access: | |
| runs-on: ubuntu-latest | |
| permissions: | |
| contents: write | |
| pull-requests: write | |
| issues: write | |
| discussions: write | |
| steps: | |
| - name: Handle lgtm+/lgtm- command | |
| uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7.1.0 | |
| with: | |
| script: | | |
| const path = '.github/APPROVED_CONTRIBUTORS'; | |
| const { owner, repo } = context.repo; | |
| const body = (context.payload.comment.body || '').trim(); | |
| const m = /^lgtm([+-])(?: @?([a-z0-9-]+))?$/i.exec(body); | |
| if (!m) return; | |
| const action = m[1] === '+' ? 'approve' : 'revoke'; | |
| const discussion = context.payload.discussion; | |
| const issue = context.payload.issue; | |
| const isDiscussion = !!discussion; | |
| const isPR = !!issue?.pull_request; | |
| // Best-effort visible feedback. Discussion-comment reactions go through | |
| // GraphQL; either path may lack permission, so never let it fail the run. | |
| const commentId = context.payload.comment.id; | |
| const nodeId = context.payload.comment.node_id; | |
| const EYES = ['eyes', 'EYES']; | |
| const ROCKET = ['rocket', 'ROCKET']; | |
| const CONFUSED = ['confused', 'CONFUSED']; | |
| const OK = ['+1', 'THUMBS_UP']; | |
| async function react([rest, gql]) { | |
| try { | |
| if (isDiscussion) { | |
| await github.graphql( | |
| 'mutation($id:ID!,$c:ReactionContent!){addReaction(input:{subjectId:$id,content:$c}){clientMutationId}}', | |
| { id: nodeId, c: gql }, | |
| ); | |
| } else { | |
| await github.rest.reactions.createForIssueComment({ owner, repo, comment_id: commentId, content: rest }); | |
| } | |
| } catch (e) { | |
| core.warning(`reaction failed: ${e.message}`); | |
| } | |
| } | |
| // Maintainers only. Stay silent for everyone else — no probing feedback. | |
| const commenter = context.payload.comment.user.login; | |
| const { data: access } = await github.rest.repos.getCollaboratorPermissionLevel({ owner, repo, username: commenter }); | |
| if (!['admin', 'maintain'].includes(access.role_name)) return; | |
| await react(EYES); | |
| // Resolve the target. Issues and discussions default to the thread author; | |
| // a PR must name someone explicitly (bare `lgtm+` reads as an ordinary review). | |
| let author; | |
| if (m[2]) { | |
| let user; | |
| try { | |
| ({ data: user } = await github.rest.users.getByUsername({ username: m[2] })); | |
| } catch (e) { | |
| if (e.status !== 404) throw e; | |
| await react(CONFUSED); | |
| core.notice(`No such GitHub user: @${m[2]}`); | |
| return; | |
| } | |
| if (user.type !== 'User') { | |
| await react(CONFUSED); | |
| core.notice(`@${m[2]} is not a user account.`); | |
| return; | |
| } | |
| author = user.login; | |
| } else if (isDiscussion) { | |
| author = discussion.user?.login; | |
| } else if (isPR) { | |
| await react(CONFUSED); | |
| core.notice('Approvals from a PR need an explicit @username.'); | |
| return; | |
| } else { | |
| author = issue?.user?.login; | |
| } | |
| if (!author) { | |
| await react(CONFUSED); | |
| core.notice('Could not resolve the target contributor.'); | |
| return; | |
| } | |
| const lc = author.toLowerCase(); | |
| const base = context.payload.repository.default_branch; | |
| const { data: baseRef } = await github.rest.git.getRef({ owner, repo, ref: `heads/${base}` }); | |
| const baseSha = baseRef.object.sha; | |
| const { data: file } = await github.rest.repos.getContent({ owner, repo, path, ref: baseSha }); | |
| if (!('content' in file) || typeof file.content !== 'string') { | |
| throw new Error(`Expected file content for ${path}`); | |
| } | |
| const content = Buffer.from(file.content, 'base64').toString('utf8'); | |
| const listed = content | |
| .split('\n') | |
| .map((line) => line.replace(/#.*/, '').trim().toLowerCase()) | |
| .filter(Boolean) | |
| .includes(lc); | |
| if (action === 'approve' && listed) { | |
| await react(OK); | |
| core.notice(`${author} is already an approved contributor.`); | |
| return; | |
| } | |
| if (action === 'revoke' && !listed) { | |
| await react(OK); | |
| core.notice(`${author} is not on the list.`); | |
| return; | |
| } | |
| const branch = `${action}-contributor/${lc}/${commentId}`; | |
| const { data: openPRs } = await github.rest.pulls.list({ owner, repo, state: 'open', per_page: 100 }); | |
| if (openPRs.some((p) => p.head.ref.startsWith(`${action}-contributor/${lc}/`))) { | |
| await react(OK); | |
| core.notice(`An open ${action} PR for ${author} already exists.`); | |
| return; | |
| } | |
| let newContent; | |
| if (action === 'approve') { | |
| const kind = isDiscussion ? 'discussion' : isPR ? 'PR' : 'issue'; | |
| const num = (discussion || issue).number; | |
| const date = new Date().toISOString().slice(0, 10); | |
| newContent = `${content.trimEnd()}\n${author} # via ${kind} #${num}, by @${commenter}, ${date}\n`; | |
| } else { | |
| const kept = content | |
| .split('\n') | |
| .filter((line) => line.replace(/#.*/, '').trim().toLowerCase() !== lc); | |
| newContent = `${kept.join('\n').replace(/\n*$/, '')}\n`; | |
| } | |
| const title = `chore: ${action} contributor ${author}`; | |
| try { | |
| await github.rest.git.createRef({ owner, repo, ref: `refs/heads/${branch}`, sha: baseSha }); | |
| await github.rest.repos.createOrUpdateFileContents({ | |
| owner, repo, path, branch, sha: file.sha, message: title, | |
| content: Buffer.from(newContent).toString('base64'), | |
| }); | |
| const { data: pr } = await github.rest.pulls.create({ | |
| owner, repo, base, head: branch, title, | |
| body: `Requested by @${commenter} via \`lgtm${m[1]}\`.`, | |
| }); | |
| await react(ROCKET); | |
| core.notice(`Opened ${pr.html_url}`); | |
| } catch (error) { | |
| await github.rest.git.deleteRef({ owner, repo, ref: `heads/${branch}` }).catch(() => {}); | |
| await react(CONFUSED); | |
| throw error; | |
| } |