[CI] Automate the merge of the release branches (#3350)

.github/workflows/release-merge.yml

@@ -0,0 +1,28 @@
+name: "Merge release"
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  merge-comment:
+    name: Merge release to main
+    runs-on: macos-14
+    if: github.event.issue.pull_request && github.event.issue.state == 'open' && github.event.comment.body == '/merge release'
+    steps:
+      - name: Connect iOS Bot
+        uses: webfactory/[email protected]
+        with:
+          ssh-private-key: ${{ secrets.BOT_SSH_PRIVATE_KEY }}
+
+      - uses: actions/[email protected]
+        with:
+          fetch-depth: 0
+
+      - uses: ./.github/actions/ruby-cache
+
+      - name: Merge
+        run: bundle exec fastlane merge_release_to_main author:"${{ github.event.comment.user.login }}" --verbose
+        env:
+          GITHUB_TOKEN: ${{ secrets.DANGER_GITHUB_API_TOKEN }}
+          GITHUB_PR_NUM: ${{ github.event.issue.number }}

.github/workflows/publish-release.yml → .github/workflows/release-publish.yml

@@ -17,14 +17,18 @@ jobs:
         uses: webfactory/[email protected]
         with:
           ssh-private-key: ${{ secrets.BOT_SSH_PRIVATE_KEY }}
+
       - uses: actions/[email protected]
+
       - name: Extract version from branch name (for release branches)
         if: startsWith(github.event.pull_request.head.ref, 'release/')
         run: |
           BRANCH_NAME="${{ github.event.pull_request.head.ref }}"
           VERSION=${BRANCH_NAME#release/}
           echo "RELEASE_VERSION=$VERSION" >> $GITHUB_ENV
+
       - uses: ./.github/actions/ruby-cache
+
       - name: "Fastlane - Publish Release"
         if: startsWith(github.event.pull_request.head.ref, 'release/')
         env:

fastlane/Fastfile

@@ -114,37 +114,52 @@ lane :publish_release do |options|
   merge_main_to_develop
 end
 
-lane :merge_release_to_main do
-  ensure_git_status_clean
-  sh('git checkout main')
-  sh('git pull')
+lane :merge_release_to_main do |options|
+  release_branch =
+    if is_ci
+      sh('git config --global user.name "Stream Bot"')
+      sh('git reset --hard')
+      ios_team = sh('gh api "orgs/GetStream/teams/ios-developers/members" --jq ".[].login"', log: false).split
+      UI.user_error!("#{options[:author]} is not a member of the iOS Team") unless ios_team.include?(options[:author])
+
+      current_branch
+    else
+      ensure_git_status_clean
+      release_branches = sh(command: 'git branch -a', log: false).delete(' ').split("\n").grep(%r(origin/.*release/))
+      UI.user_error!("Expected 1 release branch, found #{release_branches.size}") if release_branches.size != 1
 
-  # Grep all remote release branches and ensure there's only one
-  release_branches = sh(command: 'git branch -a', log: false).delete(' ').split("\n").grep(%r(origin/.*release/))
-  UI.user_error!("Expected 1 release branch, found #{release_branches.size}") if release_branches.size != 1
+      release_branches.first
+    end
+
+  UI.user_error!("`#{release_branch}`` branch does not match the release branch pattern: `release/*`") unless release_branch.start_with?('release/')
+
+  sh('git checkout origin/main')
+  sh('git pull origin main')
 
   # Merge release branch to main. For more info, read: https://notion.so/iOS-Branching-Strategy-37c10127dc26493e937769d44b1d6d9a
-  sh("git merge #{release_branches.first} --ff-only")
-  UI.user_error!('Not pushing changes') unless prompt(text: 'Will push changes. All looking good?', boolean: true)
-  sh('git push')
-  UI.important('Please, wait for the `Publish new release` workflow to pass on GitHub Actions: ' \
-               "https://github.com/#{github_repo}/actions/workflows/publish-release.yml")
+  sh("git merge #{release_branch} --ff-only")
+  sh('git push origin main')
+
+  comment = "[Publication of the release](https://github.com/#{github_repo}/actions/workflows/release-publish.yml) has been launched 👍"
+  UI.important(comment)
+  create_pr_comment(pr_num: ENV.fetch('GITHUB_PR_NUM'), text: comment)
 end
 
 lane :merge_main_to_develop do
   if is_ci
+    sh('git config --global user.name "Stream Bot"')
     sh('git reset --hard')
   else
     ensure_git_status_clean
   end
 
   sh('git checkout main')
   sh('git pull origin main')
-  sh('git checkout develop')
+  sh('git checkout origin/develop')
   sh('git pull origin develop')
   sh('git log develop..main')
   sh('git merge main')
-  sh('git push')
+  sh('git push origin develop')
 end
 
 desc 'Compresses the XCFrameworks into zip files'
@@ -939,7 +954,7 @@ end
 private_lane :create_pr_comment do |options|
   if is_ci && !options[:pr_num].to_s.empty?
     last_comment = sh("gh pr view #{options[:pr_num]} --json comments --jq '.comments | map(select(.author.login == \"Stream-iOS-Bot\")) | last'")
-    edit_last_comment = last_comment.include?(options[:edit_last_comment_with_text]) ? '--edit-last' : ''
+    edit_last_comment = options[:edit_last_comment_with_text] && last_comment.include?(options[:edit_last_comment_with_text]) ? '--edit-last' : ''
     sh("gh pr comment #{options[:pr_num]} #{edit_last_comment} -b '#{options[:text]}'")
   end
 end