From 46b15b7ffdefa43805e9b94f1a278c75fe7df524 Mon Sep 17 00:00:00 2001
From: Vladimir Razuvaev <vladimir.razuvaev@gmail.com>
Date: Thu, 26 Aug 2021 01:14:08 +0700
Subject: [PATCH] draft: open PR script

---
 scripts/gatsby-changelog-generator/cli.js     |  4 +-
 .../gatsby-changelog-generator/generate.js    | 15 ++---
 .../lerna-version-lifecycle.js                |  4 +-
 .../update-and-open-pr.js                     | 62 +++++++++++++++++++
 4 files changed, 74 insertions(+), 11 deletions(-)
 create mode 100644 scripts/gatsby-changelog-generator/update-and-open-pr.js

diff --git a/scripts/gatsby-changelog-generator/cli.js b/scripts/gatsby-changelog-generator/cli.js
index ee624125da415..b8e359461ea09 100644
--- a/scripts/gatsby-changelog-generator/cli.js
+++ b/scripts/gatsby-changelog-generator/cli.js
@@ -28,7 +28,7 @@ const argv = yargs
         try {
           await regenerateChangelog(pkg)
         } catch (e) {
-          console.error(`${pkg} error: ${e.message}`)
+          console.error(`${pkg}: ${e.stack}`)
         }
       }
     }
@@ -55,7 +55,7 @@ const argv = yargs
         try {
           await updateChangelog(pkg)
         } catch (e) {
-          console.error(`${pkg} error: ${e.message}`)
+          console.error(`${pkg}: ${e.stack}`)
         }
       }
     }
diff --git a/scripts/gatsby-changelog-generator/generate.js b/scripts/gatsby-changelog-generator/generate.js
index db9edf22584b2..fe1fb1eefb286 100644
--- a/scripts/gatsby-changelog-generator/generate.js
+++ b/scripts/gatsby-changelog-generator/generate.js
@@ -250,7 +250,10 @@ function addChangelogEntries(packageName, entries, contents) {
     entries.trimRight(),
     contents.substr(header.length),
   ]
-  fs.writeFileSync(changelogPath(packageName), updatedChangelogParts.join(`\n\n`))
+  fs.writeFileSync(
+    changelogPath(packageName),
+    updatedChangelogParts.join(`\n\n`)
+  )
 }
 
 /**
@@ -269,14 +272,12 @@ async function updateChangelog(packageName) {
   }
   const changeLog = await generateChangelog(packageName, latestVersion)
   if (!changeLog) {
-    console.log(
-      `Skipping ${packageName}: no new versions after ${latestVersion}`
-    )
-    return
+    return false
   }
 
   addChangelogEntries(packageName, changeLog, contents)
   console.log(`Updated ${path}`)
+  return true
 }
 
 /**
@@ -285,7 +286,7 @@ async function updateChangelog(packageName) {
  * Should be used inside lerna "version" hook (version is changed in package.json but not committed/tagged yet).
  * See https://github.com/lerna/lerna/tree/main/commands/version#lifecycle-scripts
  */
-async function onVersion() {
+async function onNewVersion() {
   // get list of changed files (package.json of published packages are expected to be dirty)
   const { stdout } = await execa("git", ["ls-files", "-m"])
   const packages = String(stdout).split(`\n`).map(toPackageName).filter(Boolean)
@@ -349,4 +350,4 @@ async function onVersion() {
 exports.getAllPackageNames = getAllPackageNames
 exports.regenerateChangelog = regenerateChangelog
 exports.updateChangelog = updateChangelog
-exports.onVersion = onVersion
+exports.onNewVersion = onNewVersion
diff --git a/scripts/gatsby-changelog-generator/lerna-version-lifecycle.js b/scripts/gatsby-changelog-generator/lerna-version-lifecycle.js
index 5fe4112704bb1..f9327c23ffd69 100644
--- a/scripts/gatsby-changelog-generator/lerna-version-lifecycle.js
+++ b/scripts/gatsby-changelog-generator/lerna-version-lifecycle.js
@@ -1,2 +1,2 @@
-const { onVersion } = require(`./generate`)
-onVersion().catch(console.error)
+const { onNewVersion } = require(`./generate`)
+onNewVersion().catch(console.error)
diff --git a/scripts/gatsby-changelog-generator/update-and-open-pr.js b/scripts/gatsby-changelog-generator/update-and-open-pr.js
new file mode 100644
index 0000000000000..5aebf01441972
--- /dev/null
+++ b/scripts/gatsby-changelog-generator/update-and-open-pr.js
@@ -0,0 +1,62 @@
+const execa = require(`execa`)
+const { getAllPackageNames, updateChangelog } = require(`./generate`)
+
+if (!process.env.GITHUB_ACCESS_TOKEN) {
+  throw new Error(`GITHUB_ACCESS_TOKEN env var not set`)
+}
+
+async function run() {
+  await execa(`git`, [`checkout`, `master`])
+  await execa(`git`, [`pull`, `--tags`])
+
+  const updatedPackages = []
+  for (const pkg of getAllPackageNames()) {
+    try {
+      const updated = await updateChangelog(pkg)
+      if (updated) {
+        updatedPackages.push(pkg)
+      }
+    } catch (e) {
+      console.error(`${pkg}: ${e.stack}`)
+    }
+  }
+
+  if (!updatedPackages.length) {
+    console.log(`Nothing to do`)
+    return
+  }
+
+  // Commit to the same branch
+  const branchName = `bot-changelog-update`
+  const commitMessage = `DO NOT MERGE: testing`
+  try {
+    await execa(`git`, [`checkout`, `-b`, branchName, `origin/${branchName}`])
+  } catch {
+    await execa(`git`, [`checkout`, branchName])
+  }
+  await execa(`git`, [`commit`, `-m`, commitMessage])
+
+  try {
+    const pr = await octokit.pulls.create({
+      owner: `gatsby`,
+      repo: `gatsbyjs`,
+      title: commitMessage,
+      head: branchName,
+      base: `master`,
+      body: `Update changelogs of the following packages:\n\n${updatedPackages
+        .map(p => `- ${p}`)
+        .join(`\n`)}`,
+    })
+
+    console.log(`\n---\n\nPR opened - ${pr.data.html_url}`)
+
+    await octokit.issues.addLabels({
+      owner,
+      repo,
+      issue_number: pr.data.number,
+      labels: [`bot: merge on green`],
+    })
+  } catch (e) {
+    console.log(e)
+  }
+}