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Generic PR actions include opening a PR, submit review comments, adding new commits, etc. This prevents the reviewer and PR submitter from having to manually bounce the labels back and forth in the general case. The reviewer also may not have permission to set labels, meaning the reviewer won't be able to update the labels accordingly themselves. This does not handle more subjective labels such as pr-is-blocked and pr-unclear. Unfortunately, there does not seem to be a GitHub Actions trigger for when a PR has merge conflicts, so the pr-has-conflicts label cannot be automatically applied. Co-authored-by: kleines Filmröllchen <filmroellchen@serenityos.org>
146 lines
5.3 KiB
JavaScript
146 lines
5.3 KiB
JavaScript
/*
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* Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
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* Copyright (c) 2023, kleines Filmröllchen <filmroellchen@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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const Label = {
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CommunityApproved: "✅ pr-community-approved",
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HasConflicts: "⚠️ pr-has-conflicts",
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IsBlocked: "⛔️ pr-is-blocked",
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MaintainerApprovedButAwaitingCi: "✅ pr-maintainer-approved-but-awaiting-ci",
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NeedsReview: "👀 pr-needs-review",
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Unclear: "🤔 pr-unclear",
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WaitingForAuthor: "⏳ pr-waiting-for-author",
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};
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const subjectiveLabels = [Label.IsBlocked, Label.Unclear];
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function removeExistingPrLabels(currentLabels, keepSubjectiveLabels) {
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return currentLabels.filter(
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label =>
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!label.includes("pr-") ||
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label === Label.HasConflicts ||
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(keepSubjectiveLabels && subjectiveLabels.includes(label))
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);
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}
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async function labelsForGenericPullRequestChange(currentLabels) {
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const filteredLabels = removeExistingPrLabels(currentLabels, true);
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filteredLabels.push(Label.NeedsReview);
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return filteredLabels;
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}
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async function labelsForPullRequestEffectivelyClosed(currentLabels) {
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return removeExistingPrLabels(currentLabels, false);
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}
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function apiErrorHandler(error) {
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console.log(
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"::warning::Encountered error during event handling, not updating labels. Error:",
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error
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);
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}
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module.exports = ({ github, context }) => {
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async function labelsForPullRequestReviewSubmitted(currentLabels, { pull_request, review }) {
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let newLabels = currentLabels;
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const isBlocked = currentLabels.some(label => label === Label.IsBlocked);
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if (review.state.toLowerCase() === "approved") {
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const maintainers = (
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await github.rest.teams.listMembersInOrg({
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org: "SerenityOS",
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team_slug: "maintainers",
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})
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).data;
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const approvedByMaintainer = maintainers.some(
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maintainerInArray => maintainerInArray.login === review.user.login
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);
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if (approvedByMaintainer) {
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newLabels = newLabels.filter(
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label => !(label === Label.NeedsReview || label === Label.WaitingForAuthor)
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);
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if (!newLabels.includes(Label.MaintainerApprovedButAwaitingCi))
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newLabels.push(Label.MaintainerApprovedButAwaitingCi);
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} else {
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if (!newLabels.includes(Label.CommunityApproved))
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newLabels.push(Label.CommunityApproved);
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}
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} else if (!isBlocked) {
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// Remove approval labels.
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newLabels = newLabels.filter(
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label =>
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!(
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label === Label.CommunityApproved ||
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label === Label.MaintainerApprovedButAwaitingCi
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)
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);
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if (review.user.login === pull_request.user.login) newLabels.push(Label.NeedsReview);
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else newLabels.push(Label.WaitingForAuthor);
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}
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return newLabels;
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}
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const eventHandlers = {
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opened: labelsForGenericPullRequestChange,
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reopened: labelsForGenericPullRequestChange,
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submitted: labelsForPullRequestReviewSubmitted,
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dismissed: labelsForGenericPullRequestChange,
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converted_to_draft: labelsForPullRequestEffectivelyClosed,
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ready_for_review: labelsForGenericPullRequestChange,
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synchronize: labelsForGenericPullRequestChange, // synchronize is triggered when the branch is changed
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edited: labelsForGenericPullRequestChange,
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review_requested: labelsForGenericPullRequestChange,
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closed: labelsForPullRequestEffectivelyClosed,
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};
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const eventName = context.payload.action;
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const handlerForCurrentEvent = eventHandlers[eventName];
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async function updateLabels(currentLabelsAsObjects) {
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const currentLabels = [];
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currentLabelsAsObjects.forEach(labelObject => currentLabels.push(labelObject.name));
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const isEffectivelyClosed =
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context.payload.pull_request.draft ||
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context.payload.pull_request.state.toLowerCase() === "closed";
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const newLabels = await (isEffectivelyClosed
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? labelsForPullRequestEffectivelyClosed(currentLabels, context.payload)
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: handlerForCurrentEvent(currentLabels, context.payload));
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console.log(
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`Received '${eventName}' event for ${
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isEffectivelyClosed ? "draft/closed" : "open"
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} pull request, changing labels from '${currentLabels}' to '${newLabels}'`
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);
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return github.rest.issues.setLabels({
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issue_number: context.payload.pull_request.number,
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owner: context.repo.owner,
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repo: context.repo.repo,
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labels: newLabels,
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});
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}
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if (handlerForCurrentEvent) {
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github.rest.issues
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.listLabelsOnIssue({
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issue_number: context.payload.pull_request.number,
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owner: context.repo.owner,
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repo: context.repo.repo,
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})
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.then(result => updateLabels(result.data))
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.catch(apiErrorHandler);
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} else {
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console.log(`::warning::No handler for the '${eventName}' event, not updating labels.`);
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}
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};
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