Add discussion audit gate

scripts/lib/github-discussions.js

@@ -0,0 +1,141 @@
+'use strict';
+
+const { spawnSync } = require('child_process');
+
+const DEFAULT_DISCUSSION_FIRST = 100;
+const MAINTAINER_ASSOCIATIONS = new Set(['OWNER', 'MEMBER', 'COLLABORATOR']);
+const DISCUSSION_QUERY = 'query($owner: String!, $name: String!, $first: Int!) { repository(owner: $owner, name: $name) { hasDiscussionsEnabled discussions(first: $first, orderBy: {field: UPDATED_AT, direction: DESC}) { totalCount nodes { number title url updatedAt authorAssociation category { name isAnswerable } answer { url authorAssociation } comments(first: 20) { nodes { authorAssociation } } } } } }';
+
+function splitRepo(repo) {
+  const [owner, name] = String(repo || '').split('/');
+  if (!owner || !name) {
+    throw new Error(`Invalid repo: ${repo}`);
+  }
+  return { owner, name };
+}
+
+function runCommand(command, args, options = {}) {
+  const result = spawnSync(command, args, {
+    cwd: options.cwd,
+    env: options.env || process.env,
+    encoding: 'utf8',
+    maxBuffer: 10 * 1024 * 1024,
+  });
+
+  if (result.error) {
+    throw new Error(`${command} ${args.join(' ')} failed: ${result.error.message}`);
+  }
+
+  if (result.status !== 0) {
+    throw new Error(`${command} ${args.join(' ')} failed: ${(result.stderr || result.stdout || '').trim()}`);
+  }
+
+  return result.stdout || '';
+}
+
+function runGhJson(args, options = {}) {
+  const shimPath = process.env.ECC_GH_SHIM;
+  const command = shimPath ? process.execPath : 'gh';
+  const commandArgs = shimPath ? [shimPath, ...args] : args;
+  const env = { ...process.env };
+
+  if (!options.useEnvGithubToken) {
+    delete env.GITHUB_TOKEN;
+  }
+
+  const stdout = runCommand(command, commandArgs, { env });
+  try {
+    return JSON.parse(stdout || 'null');
+  } catch (error) {
+    throw new Error(`gh ${args.join(' ')} returned invalid JSON: ${error.message}`);
+  }
+}
+
+function discussionNeedsMaintainerTouch(discussion) {
+  if (MAINTAINER_ASSOCIATIONS.has(discussion.authorAssociation)) {
+    return false;
+  }
+
+  if (
+    discussion.answer
+    && MAINTAINER_ASSOCIATIONS.has(discussion.answer.authorAssociation)
+  ) {
+    return false;
+  }
+
+  const comments = discussion.comments && Array.isArray(discussion.comments.nodes)
+    ? discussion.comments.nodes
+    : [];
+  return !comments.some(comment => MAINTAINER_ASSOCIATIONS.has(comment.authorAssociation));
+}
+
+function discussionNeedsAcceptedAnswer(discussion) {
+  return Boolean(
+    discussion
+      && discussion.category
+      && discussion.category.isAnswerable
+      && !discussion.answer
+  );
+}
+
+function summarizeDiscussion(discussion) {
+  return {
+    number: discussion.number,
+    title: discussion.title,
+    url: discussion.url,
+    updatedAt: discussion.updatedAt,
+    category: discussion.category ? discussion.category.name : null,
+  };
+}
+
+function fetchDiscussionSummary(repo, options = {}) {
+  const { owner, name } = splitRepo(repo);
+  const first = Number.isFinite(options.first) ? options.first : DEFAULT_DISCUSSION_FIRST;
+  const payload = runGhJson([
+    'api',
+    'graphql',
+    '-f',
+    `owner=${owner}`,
+    '-f',
+    `name=${name}`,
+    '-F',
+    `first=${first}`,
+    '-f',
+    `query=${DISCUSSION_QUERY}`,
+  ], options);
+  const repository = payload && payload.data && payload.data.repository;
+  const discussions = repository && repository.discussions;
+  const nodes = discussions && Array.isArray(discussions.nodes) ? discussions.nodes : [];
+  const needingTouch = nodes.filter(discussionNeedsMaintainerTouch);
+  const missingAcceptedAnswer = nodes.filter(discussionNeedsAcceptedAnswer);
+
+  return {
+    enabled: Boolean(repository && repository.hasDiscussionsEnabled),
+    totalCount: discussions && Number.isFinite(discussions.totalCount) ? discussions.totalCount : 0,
+    sampledCount: nodes.length,
+    needingMaintainerTouch: needingTouch.map(summarizeDiscussion),
+    answerableWithoutAcceptedAnswer: missingAcceptedAnswer.map(summarizeDiscussion),
+  };
+}
+
+function emptyDiscussionSummary() {
+  return {
+    enabled: false,
+    totalCount: 0,
+    sampledCount: 0,
+    needingMaintainerTouch: [],
+    answerableWithoutAcceptedAnswer: [],
+  };
+}
+
+module.exports = {
+  DEFAULT_DISCUSSION_FIRST,
+  DISCUSSION_QUERY,
+  MAINTAINER_ASSOCIATIONS,
+  discussionNeedsAcceptedAnswer,
+  discussionNeedsMaintainerTouch,
+  emptyDiscussionSummary,
+  fetchDiscussionSummary,
+  splitRepo,
+  summarizeDiscussion,
+};