Create backport action

.github/actions/backport/backport.sh

@@ -0,0 +1,39 @@
+#!/bin/bash -e
+
+echo "::notice::Fetching PR information"
+curl -L -H "Accept: application/vnd.github+json" "https://api.github.com/repos/nextcloud/cookbook/pulls/$number" > /tmp/pr-data
+
+baseSha=$(cat /tmp/pr-data | jq -r '.base.sha')
+echo "::debug::Base SHA is $baseSha"
+baseRef=$(cat /tmp/pr-data | jq -r '.base.ref')
+echo "::debug::Base reference is $baseRef"
+headSha=$(cat /tmp/pr-data | jq -r '.base.sha')
+echo "::debug::Head SHA of rebase is $headSha"
+
+IFS=' ' read tmp branchName < /tmp/comment
+echo "::debug::Branch name of destination branch is $branchName"
+
+git config user.name "Cookbook bot"
+git config user.email "bot@noreply.github.com"
+
+backportBranch() {
+	backportBranchName="backport-$branchName/$headSha"
+	echo "::debug::Backport branch name to create is $backportBranchName"
+	echo "branchName=$backportBranchName" >> "$GITHUB_OUTPUT"
+	echo "targetBranch=$baseRef" >> "$GITHUB_OUTPUT"
+
+	git branch "$backportBranchName" "$headSha"
+
+	echo "::debug::Switching to backport branch"
+	git checkout "$backportBranchName"
+
+	echo "Branch was created, ready for porting to other branch"
+
+	git rebase --onto "$branchName" "$baseSha" "$backportBranchName"
+
+	echo "Rebasing was successful"
+
+	git push origin "$backportBranchName"
+}
+
+backportBranch

.github/workflows/slack-commands.yaml

@@ -0,0 +1,75 @@
+name: Slack-like comments
+on:
+  issue_comment:
+    types:
+      - "created"
+      - "edited"
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  approve-pr:
+    name: Approve PR
+    runs-on: ubuntu-latest
+    if: github.event.issue.pull_request
+    env:
+      admins: '["seyfeb", "christianlupus"]'
+    steps:
+      - run: |-
+          echo "Admins: $admins"
+          echo "User is permitted: ${{ contains(fromJSON(env.admins), github.event.comment.user.login) }}"
+          echo "Comment body matches /approve: ${{github.event.comment.body == '/approve'}}"
+      - uses: hmarr/auto-approve-action@v3
+        if: >-
+          github.event.comment.body == '/approve' &&
+          contains(fromJSON(env.admins), github.event.comment.user.login)
+        with:
+          github-token: ${{ secrets.COOKBOOK_BOT_TOKEN }}
+          pull-request-number: ${{ github.event.issue.number }}
+          review-message: "Automatically approved by GitHub action on behalf of `/approve`"
+
+  backport:
+    name: Backport PR
+    runs-on: ubuntu-latest
+    if: github.event.issue.pull_request
+    env:
+      admins: '["seyfeb", "christianlupus"]'
+    steps:
+      - name: Collect data
+        run: |-
+          echo "Admins: $admins"
+          echo "User is permitted: ${{ contains(fromJSON(env.admins), github.event.comment.user.login) }}"
+          echo "permitted_user=${{ contains(fromJSON(env.admins), github.event.comment.user.login) }}" >> "$GITHUB_OUTPUT"
+          echo "Comment body matches /approve: ${{ startsWith(github.event.comment.body, '/backport')}}"
+          echo "use_backport=${{ startsWith(github.event.comment.body, '/backport')}}" >> "$GITHUB_OUTPUT"
+          echo "number=${{ github.event.issue.number }}" >> "$GITHUB_ENV"
+          echo "${{ github.event.comment.body }}" > /tmp/comment
+        id: config
+      - name: Add reaction unon start
+        if: steps.config.outputs.permitted_user && steps.config.outputs.use_backport
+        uses: peter-evans/create-or-update-comment@v3.0.1
+        with:
+          token: ${{ secrets.COOKBOOK_BOT_TOKEN }}
+          repository: ${{ github.event.repository.full_name }}
+          comment-id: ${{ github.event.comment.id }}
+          reaction-type: "+1"
+      - name: Carry out the backport
+        if: steps.config.outputs.permitted_user && steps.config.outputs.use_backport
+        run: .github/actions/backport/backport.sh
+        id: backport
+      - name: Create a pull request
+        if: steps.config.outputs.permitted_user && steps.config.outputs.use_backport
+        uses: peter-evans/create-pull-request@v5
+        with:
+          token: ${{ secrets.COOKBOOK_BOT_TOKEN }}
+          branch: ${{ steps.backport.outputs.branchName }}
+          base: ${{ steps.backport.outputs.targetBranch }}
+          title: Backport of ${{ github.event.pull_request.title }}
+          body: |-
+            Backport of #${{ github.event.issue.number }}
+
+            ${{ github.event.body }}
+
+

CHANGELOG.md

@@ -3,6 +3,8 @@
 ### Maintenance
 - Add PHP lint checker to ensure valid (legacy) PHP syntax
   [#1931](https://github.com/nextcloud/cookbook/pull/1931) @christianlupus
+- Add backport script to simplify development
+  [#1935](https://github.com/nextcloud/cookbook/pull/1935) @christianlupus
 
 
 ## 0.10.3 - 2023-12-04