From b6d0d7e87061782c733ce2ca5b7dccfcbc0f9fd8 Mon Sep 17 00:00:00 2001
From: mroloux <matti@seats.io>
Date: Thu, 24 Oct 2024 10:00:28 +0200
Subject: [PATCH] Create releases in the npm registry and in github

---
 .github/workflows/release.yml | 48 +++++++++----------
 release.mjs                   | 87 +++++++++++++++++++++++++++++++++++
 2 files changed, 109 insertions(+), 26 deletions(-)
 create mode 100755 release.mjs

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 995ecd4..a00e6b0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,40 +20,36 @@ on:
           - major
 
 jobs:
-  updateVersionAndPublish:
+  release:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - uses: fregante/setup-git-user@v2
       - uses: actions/setup-node@v4
         with:
           node-version: 20
           registry-url: https://registry.npmjs.org/
-
-      - name: Checkout latest main
-        run: | 
-          git checkout main
-          git pull origin main
-
-      - name: Build types
-        run: |
-          yarn install
-          yarn build
-
-      - name: Update package version
+      - run: yarn install
+      - run: yarn zx ./release.mjs -v $VERSION_TO_BUMP
         env:
-          VERSION: ${{ inputs.version }}
-        run: |
-          yarn bump-version --v $VERSION
-
-      - name: Commit updated package.json
-        run: | 
-          git add package.json
-          git commit -m "Update @seatsio/seatsio-types"
-          git push origin main
+          VERSION_TO_BUMP: ${{ inputs.versionToBump }}
+          GH_TOKEN: ${{ github.token }}
+      - run: yarn build
+      - run: yarn publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
 
-      - name: Publish new version to NPM
-        uses: JS-DevTools/npm-publish@v3
+  notify-slack-failure:
+    runs-on: ubuntu-latest
+    needs: [ release ]
+    if: failure()
+    steps:
+      - uses: voxmedia/github-action-slack-notify-build@v1
         with:
-          token: ${{ secrets.NPM_TOKEN }}
-          package: './package.json'
+          status: FAILED
+          channel: build_status
+          color: danger
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.SLACK_NOTIFICATIONS_BOT_TOKEN }}
diff --git a/release.mjs b/release.mjs
new file mode 100755
index 0000000..9cbe45c
--- /dev/null
+++ b/release.mjs
@@ -0,0 +1,87 @@
+#!/usr/bin/env zx
+
+$.verbose = false
+
+const semver = require('semver')
+const versionToBump = getVersionToBump()
+const latestReleaseTag = await fetchLatestReleasedVersionNumber()
+const latestVersion = removeLeadingV(latestReleaseTag)
+const nextVersion = await determineNextVersionNumber(latestVersion)
+
+await assertChangesSinceRelease(latestReleaseTag)
+await bumpVersionInFiles()
+await commitAndPush()
+await release()
+
+function getVersionToBump() {
+    if (!argv.v || !(argv.v === 'minor' || argv.v === 'major')) {
+        throw new Error ("Please specify -v major/minor")
+    }
+    return argv.v
+}
+
+function removeLeadingV(tagName) {
+    if (tagName.startsWith('v')) {
+        return tagName.substring(1)
+    }
+    return tagName
+}
+
+async function fetchLatestReleasedVersionNumber() {
+    let result = await $`gh release view --json tagName`
+    return JSON.parse(result).tagName
+}
+
+async function determineNextVersionNumber(previous) {
+    return semver.inc(previous, versionToBump)
+}
+
+async function bumpVersionInFiles() {
+    await replaceInFile("package.json", `"version": "${latestVersion}",`, `"version": "${nextVersion}",`)
+}
+
+async function replaceInFile(filename, latestVersion, nextVersion) {
+    return await fs.readFile(filename, 'utf8')
+        .then(text => {
+            if (text.indexOf(latestVersion) < 0) {
+                throw new Error('Not the correct version. Could not find ' + latestVersion + ' in ' + filename)
+            }
+            return text
+        })
+        .then(text => text.replace(latestVersion, nextVersion))
+        .then(text => fs.writeFileSync(filename, text))
+        .then(() => gitAdd(filename))
+}
+
+async function gitAdd(filename) {
+    return await $`git add ${filename}`
+}
+
+async function commitAndPush() {
+    await $`git commit -m "version bump"`
+    await $`git push origin main`
+}
+
+async function getCurrentCommitHash() {
+    return (await $`git rev-parse HEAD`).stdout.trim()
+}
+
+async function getCommitHashOfTag(tag) {
+    return (await $`git rev-list -n 1 ${tag}`).stdout.trim()
+}
+
+async function assertChangesSinceRelease(releaseTag) {
+    let mainCommitHash = await getCurrentCommitHash()
+    let releaseCommitHash = await getCommitHashOfTag(releaseTag)
+    if(mainCommitHash === releaseCommitHash) {
+        throw new Error("No changes on main since release tagged " + releaseTag)
+    }
+}
+
+async function release() {
+    const newTag = 'v' + nextVersion
+    return await $`gh release create ${newTag} --generate-notes`.catch(error => {
+        console.error('something went wrong while creating the release. Please revert the version change!')
+        throw error
+    })
+}