From 4adff378f175aaa0bf76211bb96d79d5627fecf4 Mon Sep 17 00:00:00 2001
From: Neal Beeken <neal.beeken@mongodb.com>
Date: Mon, 3 Jul 2023 08:39:24 -0400
Subject: [PATCH] chore(NODE-5382): backport release automation scripts (#3747)

---
 .github/actions/setup/action.yml  | 15 ++++++
 .github/scripts/highlights.mjs    | 79 +++++++++++++++++++++++++++++++
 .github/scripts/pr_list.mjs       | 28 +++++++++++
 .github/scripts/release_notes.mjs | 56 ++++++++++++++++++++++
 .github/scripts/util.mjs          | 47 ++++++++++++++++++
 5 files changed, 225 insertions(+)
 create mode 100644 .github/actions/setup/action.yml
 create mode 100644 .github/scripts/highlights.mjs
 create mode 100644 .github/scripts/pr_list.mjs
 create mode 100644 .github/scripts/release_notes.mjs
 create mode 100644 .github/scripts/util.mjs

diff --git a/.github/actions/setup/action.yml b/.github/actions/setup/action.yml
new file mode 100644
index 0000000000..28e68503b2
--- /dev/null
+++ b/.github/actions/setup/action.yml
@@ -0,0 +1,15 @@
+name: Setup
+description: 'Installs node, driver dependencies, and builds source'
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/setup-node@v3
+      with:
+        node-version: 'lts/*'
+        cache: 'npm'
+        registry-url: 'https://registry.npmjs.org'
+    - run: npm install -g npm@latest
+      shell: bash
+    - run: npm clean-install
+      shell: bash
diff --git a/.github/scripts/highlights.mjs b/.github/scripts/highlights.mjs
new file mode 100644
index 0000000000..49cea1bff1
--- /dev/null
+++ b/.github/scripts/highlights.mjs
@@ -0,0 +1,79 @@
+// @ts-check
+import * as process from 'node:process';
+import { Octokit } from '@octokit/core';
+import { output } from './util.mjs';
+
+const {
+  GITHUB_TOKEN = '',
+  PR_LIST = '',
+  owner = 'mongodb',
+  repo = 'node-mongodb-native'
+} = process.env;
+if (GITHUB_TOKEN === '') throw new Error('GITHUB_TOKEN cannot be empty');
+
+const octokit = new Octokit({
+  auth: GITHUB_TOKEN,
+  log: {
+    debug: msg => console.error('Octokit.debug', msg),
+    info: msg => console.error('Octokit.info', msg),
+    warn: msg => console.error('Octokit.warn', msg),
+    error: msg => console.error('Octokit.error', msg)
+  }
+});
+
+const prs = PR_LIST.split(',').map(pr => {
+  const prNum = Number(pr);
+  if (Number.isNaN(prNum))
+    throw Error(`expected PR number list: ${PR_LIST}, offending entry: ${pr}`);
+  return prNum;
+});
+
+/** @param {number} pull_number */
+async function getPullRequestContent(pull_number) {
+  const startIndicator = 'RELEASE_HIGHLIGHT_START -->';
+  const endIndicator = '<!-- RELEASE_HIGHLIGHT_END';
+
+  let body;
+  try {
+    const res = await octokit.request('GET /repos/{owner}/{repo}/pulls/{pull_number}', {
+      owner,
+      repo,
+      pull_number,
+      headers: { 'X-GitHub-Api-Version': '2022-11-28' }
+    });
+    body = res.data.body;
+  } catch (error) {
+    console.log(`Could not get PR ${pull_number}, skipping. ${error.status}`);
+    return '';
+  }
+
+  if (body == null || !(body.includes(startIndicator) && body.includes(endIndicator))) {
+    console.log(`PR #${pull_number} has no highlight`);
+    return '';
+  }
+
+  const start = body.indexOf('### ', body.indexOf(startIndicator));
+  const end = body.indexOf(endIndicator);
+  const highlightSection = body.slice(start, end).trim();
+
+  console.log(`PR #${pull_number} has a highlight ${highlightSection.length} characters long`);
+  return highlightSection;
+}
+
+/** @param {number[]} prs */
+async function pullRequestHighlights(prs) {
+  const highlights = [];
+  for (const pr of prs) {
+    const content = await getPullRequestContent(pr);
+    highlights.push(content);
+  }
+  if (!highlights.length) return '';
+
+  highlights.unshift('## Release Notes\n\n');
+  return highlights.join('\n\n');
+}
+
+console.log('List of PRs to collect highlights from:', prs);
+const highlights = await pullRequestHighlights(prs);
+
+await output('highlights', JSON.stringify({ highlights }));
diff --git a/.github/scripts/pr_list.mjs b/.github/scripts/pr_list.mjs
new file mode 100644
index 0000000000..68639e2dea
--- /dev/null
+++ b/.github/scripts/pr_list.mjs
@@ -0,0 +1,28 @@
+// @ts-check
+import * as url from 'node:url';
+import * as fs from 'node:fs/promises';
+import * as path from 'node:path';
+import { getCurrentHistorySection, output } from './util.mjs';
+
+const __dirname = url.fileURLToPath(new URL('.', import.meta.url));
+const historyFilePath = path.join(__dirname, '..', '..', 'HISTORY.md');
+
+/**
+ * @param {string} history
+ * @returns {string[]}
+ */
+function parsePRList(history) {
+  const prRegexp = /node-mongodb-native\/issues\/(?<prNum>\d+)\)/iu;
+  return history
+    .split('\n')
+    .map(line => prRegexp.exec(line)?.groups?.prNum ?? '')
+    .filter(prNum => prNum !== '');
+}
+
+const historyContents = await fs.readFile(historyFilePath, { encoding: 'utf8' });
+
+const currentHistorySection = getCurrentHistorySection(historyContents);
+
+const prs = parsePRList(currentHistorySection);
+
+await output('pr_list', prs.join(','));
diff --git a/.github/scripts/release_notes.mjs b/.github/scripts/release_notes.mjs
new file mode 100644
index 0000000000..3f6dd96eff
--- /dev/null
+++ b/.github/scripts/release_notes.mjs
@@ -0,0 +1,56 @@
+//@ts-check
+import * as url from 'node:url';
+import * as fs from 'node:fs/promises';
+import * as path from 'node:path';
+import * as process from 'node:process';
+import * as semver from 'semver';
+import { getCurrentHistorySection, output } from './util.mjs';
+
+const { HIGHLIGHTS = '' } = process.env;
+if (HIGHLIGHTS === '') throw new Error('HIGHLIGHTS cannot be empty');
+
+const { highlights } = JSON.parse(HIGHLIGHTS);
+
+const __dirname = url.fileURLToPath(new URL('.', import.meta.url));
+const historyFilePath = path.join(__dirname, '..', '..', 'HISTORY.md');
+const packageFilePath = path.join(__dirname, '..', '..', 'package.json');
+
+const historyContents = await fs.readFile(historyFilePath, { encoding: 'utf8' });
+
+const currentHistorySection = getCurrentHistorySection(historyContents);
+
+const version = semver.parse(
+  JSON.parse(await fs.readFile(packageFilePath, { encoding: 'utf8' })).version
+);
+if (version == null) throw new Error(`could not create semver from package.json`);
+
+console.log('\n\n--- history entry ---\n\n', currentHistorySection);
+
+const currentHistorySectionLines = currentHistorySection.split('\n');
+const header = currentHistorySectionLines[0];
+const history = currentHistorySectionLines.slice(1).join('\n').trim();
+
+const releaseNotes = `${header}
+
+The MongoDB Node.js team is pleased to announce version ${version.version} of the \`mongodb\` package!
+
+${highlights}
+${history}
+## Documentation
+
+* [Reference](https://docs.mongodb.com/drivers/node/current/)
+* [API](https://mongodb.github.io/node-mongodb-native/${version.major}.${version.minor}/)
+* [Changelog](https://github.com/mongodb/node-mongodb-native/blob/v${version.version}/HISTORY.md)
+
+We invite you to try the \`mongodb\` library immediately, and report any issues to the [NODE project](https://jira.mongodb.org/projects/NODE).
+`;
+
+const releaseNotesPath = path.join(process.cwd(), 'release_notes.md');
+
+await fs.writeFile(
+  releaseNotesPath,
+  `:seedling: A new release!\n---\n${releaseNotes}\n---\n`,
+  { encoding:'utf8' }
+);
+
+await output('release_notes_path', releaseNotesPath)
diff --git a/.github/scripts/util.mjs b/.github/scripts/util.mjs
new file mode 100644
index 0000000000..de76df4ac0
--- /dev/null
+++ b/.github/scripts/util.mjs
@@ -0,0 +1,47 @@
+// @ts-check
+import * as process from 'node:process';
+import * as fs from 'node:fs/promises';
+
+export async function output(key, value) {
+  const { GITHUB_OUTPUT = '' } = process.env;
+  const output = `${key}=${value}\n`;
+  console.log('outputting:', output);
+
+  if (GITHUB_OUTPUT.length === 0) {
+    // This is always defined in Github actions, and if it is not for some reason, tasks that follow will fail.
+    // For local testing it's convenient to see what scripts would output without requiring the variable to be defined.
+    console.log('GITHUB_OUTPUT not defined, printing only');
+    return;
+  }
+
+  const outputFile = await fs.open(GITHUB_OUTPUT, 'a');
+  await outputFile.appendFile(output, { encoding: 'utf8' });
+  await outputFile.close();
+}
+
+/**
+ * @param {string} historyContents
+ * @returns {string}
+ */
+export function getCurrentHistorySection(historyContents) {
+  /** Markdown version header */
+  const VERSION_HEADER = /^#.+\(\d{4}-\d{2}-\d{2}\)$/g;
+
+  const historyLines = historyContents.split('\n');
+
+  // Search for the line with the first version header, this will be the one we're releasing
+  const headerLineIndex = historyLines.findIndex(line => VERSION_HEADER.test(line));
+  if (headerLineIndex < 0) throw new Error('Could not find any version header');
+
+  console.log('Found markdown header current release', headerLineIndex, ':', historyLines[headerLineIndex]);
+
+  // Search lines starting after the first header, and add back the offset we sliced at
+  const nextHeaderLineIndex = historyLines
+    .slice(headerLineIndex + 1)
+    .findIndex(line => VERSION_HEADER.test(line)) + headerLineIndex + 1;
+  if (nextHeaderLineIndex < 0) throw new Error(`Could not find previous version header, searched ${headerLineIndex + 1}`);
+
+  console.log('Found markdown header previous release', nextHeaderLineIndex, ':', historyLines[nextHeaderLineIndex]);
+
+  return historyLines.slice(headerLineIndex, nextHeaderLineIndex).join('\n');
+}