From 2d8fc1d041abe1e0efa78921fcfe7cea26d6fb7e Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A9r=C3=B4me=20Benoit?= <jerome.benoit@sap.com>
Date: Tue, 29 Aug 2023 16:18:23 +0200
Subject: [PATCH] build(deps): automate dependabot PRs combine
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Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>
---
 .github/workflows/combine-prs.yml | 136 +++---------------------------
 1 file changed, 11 insertions(+), 125 deletions(-)

diff --git a/.github/workflows/combine-prs.yml b/.github/workflows/combine-prs.yml
index 41b21bec..4d7fb83c 100644
--- a/.github/workflows/combine-prs.yml
+++ b/.github/workflows/combine-prs.yml
@@ -1,134 +1,20 @@
-name: 'Combine PRs'
+name: Combine PRs
 
-# Controls when the action will run - in this case triggered manually
 on:
+  schedule:
+    - cron: '0 0 * * *'
   workflow_dispatch:
-    inputs:
-      branchPrefix:
-        description: 'Branch prefix to find combinable PRs based on'
-        required: true
-        default: 'dependabot'
-      mustBeGreen:
-        description: 'Only combine PRs that are green (status is success)'
-        required: true
-        default: true
-      combineBranchName:
-        description: 'Name of the branch to combine PRs into'
-        required: true
-        default: 'combine-prs-branch'
-      ignoreLabel:
-        description: 'Exclude PRs with this label'
-        required: true
-        default: 'nocombine'
 
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+permissions:
+  contents: write
+  pull-requests: write
+  checks: read
+
 jobs:
-  # This workflow contains a single job called "combine-prs"
   combine-prs:
-    # The type of runner that the job will run on
     runs-on: ubuntu-latest
 
-    # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-      - uses: actions/github-script@v6
-        id: create-combined-pr
-        name: Create Combined PR
-        with:
-          github-token: ${{secrets.GITHUB_TOKEN}}
-          script: |
-            const pulls = await github.paginate('GET /repos/:owner/:repo/pulls', {
-              owner: context.repo.owner,
-              repo: context.repo.repo
-            });
-            let branchesAndPRStrings = [];
-            let baseBranch = null;
-            let baseBranchSHA = null;
-            for (const pull of pulls) {
-              const branch = pull['head']['ref'];
-              console.log('Pull for branch: ' + branch);
-              if (branch.startsWith('${{ github.event.inputs.branchPrefix }}')) {
-                console.log('Branch matched prefix: ' + branch);
-                let statusOK = true;
-                if(${{ github.event.inputs.mustBeGreen }}) {
-                  console.log('Checking green status: ' + branch);
-                  const statusResponse = await github.rest.repos.getCombinedStatusForRef({
-                    owner: context.repo.owner,
-                    repo: context.repo.repo,
-                    ref: branch
-                  });
-                  const state = statusResponse['data']['state'];
-                  console.log('Validating status: ' + state);
-                  if(state != 'success') {
-                    console.log('Discarding ' + branch + ' with status ' + state);
-                    statusOK = false;
-                  }
-                }
-                console.log('Checking labels: ' + branch);
-                const labels = pull['labels'];
-                for(const label of labels) {
-                  const labelName = label['name'];
-                  console.log('Checking label: ' + labelName);
-                  if(labelName == '${{ github.event.inputs.ignoreLabel }}') {
-                    console.log('Discarding ' + branch + ' with label ' + labelName);
-                    statusOK = false;
-                  }
-                }
-                if (statusOK) {
-                  console.log('Adding branch to array: ' + branch);
-                  const prString = '#' + pull['number'] + ' ' + pull['title'];
-                  branchesAndPRStrings.push({ branch, prString });
-                  baseBranch = pull['base']['ref'];
-                  baseBranchSHA = pull['base']['sha'];
-                }
-              }
-            }
-            if (branchesAndPRStrings.length == 0) {
-              core.setFailed('No PRs/branches matched criteria');
-              return;
-            }
-            try {
-              await github.rest.git.createRef({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                ref: 'refs/heads/' + '${{ github.event.inputs.combineBranchName }}',
-                sha: baseBranchSHA
-              });
-            } catch (error) {
-              console.log(error);
-              core.setFailed('Failed to create combined branch - maybe a branch by that name already exists?');
-              return;
-            }
-
-            let combinedPRs = [];
-            let mergeFailedPRs = [];
-            for(const { branch, prString } of branchesAndPRStrings) {
-              try {
-                await github.rest.repos.merge({
-                  owner: context.repo.owner,
-                  repo: context.repo.repo,
-                  base: '${{ github.event.inputs.combineBranchName }}',
-                  head: branch,
-                });
-                console.log('Merged branch ' + branch);
-                combinedPRs.push(prString);
-              } catch (error) {
-                console.log('Failed to merge branch ' + branch);
-                mergeFailedPRs.push(prString);
-              }
-            }
-
-            console.log('Creating combined PR');
-            const combinedPRsString = combinedPRs.join('\n');
-            let body = '✅ This PR was created by the Combine PRs action by combining the following PRs:\n' + combinedPRsString;
-            if(mergeFailedPRs.length > 0) {
-              const mergeFailedPRsString = mergeFailedPRs.join('\n');
-              body += '\n\n⚠️ The following PRs were left out due to merge conflicts:\n' + mergeFailedPRsString
-            }
-            await github.rest.pulls.create({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              title: 'Combined PR',
-              head: '${{ github.event.inputs.combineBranchName }}',
-              base: baseBranch,
-              body: body
-            });
+      - name: combine-prs
+        id: combine-prs
+        uses: github/combine-prs@v3.1.2
-- 
2.34.1