.github/workflows/maintain-prod-release-pr.yaml #41
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| on: | |
| # run manually from the actions panels | |
| workflow_dispatch: | |
| # since we can't currently create a PR and have the jobs run | |
| # successfully, run when one is manually created. | |
| pull_request: | |
| types: [opened] | |
| branches: [prod] | |
| # update the PR text when new commits are merged to the master branch | |
| push: | |
| branches: | |
| - master | |
| # and re-run early in the morning, mainly so the title gets updated with today's date | |
| schedule: | |
| - cron: "42 1 * * *" | |
| permissions: | |
| contents: read | |
| pull-requests: write | |
| jobs: | |
| main: | |
| name: Maintain Prod PR | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/github-script@d7906e4ad0b1822421a7e6a35d5ca353c962f410 # v6 | |
| with: | |
| script: | | |
| const owner = context.repo.owner; | |
| const repo = context.repo.repo; | |
| function renderCommit(commitMsg) { | |
| const prRegex = /\(#(\d+)\)$/m; | |
| const allRefsRegex = /#(\d+)\s/g; | |
| const prRef = commitMsg.match(prRegex); | |
| if (!prRef) { | |
| return `- ${"???" + commitMsg}`; | |
| } | |
| const prNumber = prRef[1]; | |
| const otherReferences = [...commitMsg.matchAll(allRefsRegex)] | |
| .map((m) => m[1]) | |
| .filter((r) => r !== prNumber); | |
| const messages = [ | |
| `- #${prNumber}`, | |
| ...otherReferences.map((r) => ` - re #${r}`), | |
| ]; | |
| return messages.join("\n"); | |
| } | |
| function buildSection(title, commitMsgs) { | |
| if (commitMsgs.length === 0) return ""; | |
| return `\n## ${title}\n\n${commitMsgs.map(renderCommit).join("\n")}`; | |
| } | |
| function buildBody(messages) { | |
| const groups = [ | |
| { | |
| type: "feat", | |
| title: "Features", | |
| }, | |
| { | |
| type: "fix", | |
| title: "Fixes", | |
| }, | |
| { | |
| type: "chore", | |
| title: "Chores", | |
| }, | |
| { | |
| type: "refactor", | |
| title: "Refactors", | |
| }, | |
| ]; | |
| const knownSections = groups.map((group) => | |
| buildSection( | |
| group.title, | |
| messages.filter((m) => m.startsWith(group.type)) | |
| ) | |
| ); | |
| const allKnownSections = groups.map((g) => g.type); | |
| const unknownSections = buildSection( | |
| "Other", | |
| messages.filter((m) => !allKnownSections.some((s) => m.startsWith(s))) | |
| ); | |
| return [...knownSections, unknownSections].join("\n"); | |
| } | |
| async function findReleasePR() { | |
| const { data: prs } = await github.rest.pulls.list({ | |
| owner, | |
| repo, | |
| base: "prod", | |
| state: "open", | |
| }); | |
| if (prs.length === 0) { | |
| console.log("no release PR found"); | |
| return undefined; | |
| } | |
| if (prs.length !== 1) { | |
| throw new Error(`${prs.length} production PRs found...`); | |
| } | |
| const pr = prs[0]; | |
| console.log( | |
| `Found PR#${pr.number} ${pr.title} ${ | |
| pr.draft ? "(draft)" : "(not draft)" | |
| } - ${pr.html_url}` | |
| ); | |
| return pr; | |
| } | |
| const pr = await findReleasePR(); | |
| if (!pr) { | |
| console.log("checking commits..."); | |
| const commits = await github.rest.repos.compareCommitsWithBasehead({ | |
| owner, | |
| repo, | |
| basehead: "prod...master", | |
| }); | |
| if (commits.data.commits.length === 0) { | |
| console.log("no changes to release!"); | |
| return; | |
| } | |
| const commitMessages = commits.data.commits.map((c) => c.commit.message); | |
| const result = buildBody(commitMessages); | |
| console.log("need to create a draft release PR!", result); | |
| // but don't actually do it yet: if you create one using the github | |
| // token, it doesn't run the security jobs. Create an empty one by hand, | |
| // for now. | |
| /* | |
| const newPr = await github.rest.pulls.create({ | |
| owner, | |
| repo, | |
| title: "Production Release (next)", | |
| head: "master", | |
| base: "prod", | |
| draft: true, | |
| body: result, | |
| }); | |
| console.log("created: " + newPr.data.html_url); | |
| */ | |
| } else { | |
| const { data: commits } = await github.rest.pulls.listCommits({ | |
| owner, | |
| repo, | |
| pull_number: pr.number, | |
| }); | |
| const commitMessages = commits.map((c) => c.commit.message); | |
| const body = buildBody(commitMessages); | |
| const title = `Production Release ${new Date().toISOString().slice(0, 10)}`; | |
| if (body === pr.body && title === pr.title) { | |
| console.log("up to date!"); | |
| } else { | |
| console.log(`Updating PR!`, { title, body }); | |
| await github.rest.pulls.update({ | |
| owner, | |
| repo, | |
| pull_number: pr.number, | |
| body, | |
| title, | |
| }); | |
| } | |
| } |