nightly task to automatically PR and merge changes from main into release

.github/workflows/nightly.yml

@@ -0,0 +1,31 @@
+name: Nightly
+
+on:
+  schedule:
+    - cron:  '0 19 * * *'
+
+jobs:
+  check-develop-beta-changes:
+    name: Check if develop is ahead of beta release
+    runs-on: ubuntu-latest
+
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version:
+            16
+      - run: npm ci
+        working-directory: ./tools/beta-release/
+
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            const { script } = await import('${{ github.workspace }}/tools/beta-release/app.js')
+            await script({github, context, core})
+

.gitignore

@@ -11,3 +11,4 @@
 .cxx
 local.properties
 /benchmark-out
+**/node_modules

tools/beta-release/app.js

@@ -0,0 +1,138 @@
+const config = {
+    owner: "ouchadam",
+    repo: "small-talk",
+    pathToVersionFile: "version.json",
+    rcBranchesFrom: "main",
+    rcMergesTo: "release",
+}
+
+const rcBranchName = "release-candidate"
+
+export const script = async ({ github, context, core }) => {
+    console.log("script start")
+    if (await doesNotHaveInProgressRelease(github) && await isWorkingBranchAhead(github)) {
+        await startRelease(github)
+    } else {
+        console.log(`Release skipped due to being behind`)
+    }
+    return ""
+}
+
+const isWorkingBranchAhead = async (github) => {
+    const result = await github.rest.repos.compareCommitsWithBasehead({
+        owner: config.owner,
+        repo: config.repo,
+        basehead: `${config.rcMergesTo}...${config.rcBranchesFrom}`,
+        per_page: 1,
+        page: 1,
+    })
+    return result.data.status === "ahead"
+}
+
+const doesNotHaveInProgressRelease = async (github) => {
+    const releasePrs = await github.rest.pulls.list({
+        owner: config.owner,
+        repo: config.repo,
+        state: "open",
+        base: config.rcMergesTo
+    })
+
+    const syncPrs = await github.rest.pulls.list({
+        owner: config.owner,
+        repo: config.repo,
+        state: "open",
+        base: config.rcBranchesFrom,
+        head: `${config.owner}:${config.rcMergesTo}`
+    })
+
+    return releasePrs.data.length === 0 && syncPrs.data.length === 0
+}
+
+const startRelease = async (github) => {
+    console.log(`creating release candidate from head of ${config.rcBranchesFrom}`)
+
+    await createBranch(github, "release-candidate", config.rcBranchesFrom)
+    await incrementVersionFile(github, rcBranchName)
+
+    const createdPr = await github.rest.pulls.create({
+        owner: config.owner,
+        repo: config.repo,
+        title: "[Auto] Release Candidate",
+        head: rcBranchName,
+        base: config.rcMergesTo,
+        body: "todo",
+    })
+
+    github.graphql(
+        `
+        mutation ($pullRequestId: ID!, $mergeMethod: PullRequestMergeMethod!) {
+            enablePullRequestAutoMerge(input: {
+              pullRequestId: $pullRequestId,
+              mergeMethod: $mergeMethod
+            }) {
+              pullRequest {
+                autoMergeRequest {
+                  enabledAt
+                  enabledBy {
+                    login
+                  }
+                }
+              }
+            }
+          }
+        `,
+        {
+            pullRequestId: createdPr.data.node_id,
+            mergeMethod: "MERGE"
+        }
+    )
+}
+
+const createBranch = async (github, branchName, fromBranch) => {
+    const mainRef = await github.rest.git.getRef({
+        owner: config.owner,
+        repo: config.repo,
+        ref: `heads/${fromBranch}`,
+    })
+
+    await github.rest.git.createRef({
+        owner: config.owner,
+        repo: config.repo,
+        ref: `refs/heads/${branchName}`,
+        sha: mainRef.data.object.sha,
+    })
+}
+
+const incrementVersionFile = async (github, branchName) => {
+    const versionFile = await readVersionFile(github)
+
+    const updatedVersionFile = {
+        ...versionFile.content,
+        code: versionFile.content.code + 1,
+    }
+    const encodedContentUpdate = Buffer.from(JSON.stringify(updatedVersionFile, null, 2)).toString('base64')
+    await github.rest.repos.createOrUpdateFileContents({
+        owner: config.owner,
+        repo: config.repo,
+        content: encodedContentUpdate,
+        path: config.pathToVersionFile,
+        sha: versionFile.sha,
+        branch: branchName,
+        message: "updating version for release",
+    })
+}
+
+const readVersionFile = async (github) => {
+    const result = await github.rest.repos.getContent({
+        owner: config.owner,
+        repo: config.repo,
+        path: config.pathToVersionFile,
+        ref: config.rcBranchesFrom,
+    })
+
+    const content = Buffer.from(result.data.content, result.data.encoding).toString()
+    return {
+        content: JSON.parse(content),
+        sha: result.data.sha,
+    }
+}

tools/beta-release/package-lock.json

@@ -0,0 +1,13 @@
+{
+  "name": "beta-release",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "beta-release",
+      "version": "1.0.0",
+      "license": "MIT"
+    }
+  }
+}

tools/beta-release/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "beta-release",
+  "version": "1.0.0",
+  "main": "app.js",
+  "license": "MIT",
+  "type": "module",
+  "private": true
+}