From d8246958b986a62aeaea4abade36ad8c18043df1 Mon Sep 17 00:00:00 2001
From: Shohei Ueda <30958501+peaceiris@users.noreply.github.com>
Date: Mon, 11 Jul 2022 22:44:29 +0900
Subject: [PATCH] ci: add reusable merger workflow (#7)

---
 .github/workflows/merger.yml | 36 ++++++++++++++++++++++++++++++++++++
 README.md                    | 16 ++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 .github/workflows/merger.yml

diff --git a/.github/workflows/merger.yml b/.github/workflows/merger.yml
new file mode 100644
index 0000000..0e14d5f
--- /dev/null
+++ b/.github/workflows/merger.yml
@@ -0,0 +1,36 @@
+name: Pull-request Merger
+
+on:
+  workflow_call:
+  issue_comment:
+    types: [created, edited]
+
+jobs:
+  merge:
+    if: |
+      (github.event.issue.pull_request) &&
+      (github.event.comment.author_association == 'OWNER') &&
+      (github.event.comment.body == '/merge')
+    runs-on: ubuntu-20.04
+    timeout-minutes: 1
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - name: Merge
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_NUM: ${{ github.event.issue.number }}
+        run: |
+          PR_JSON=$(gh pr view "${PR_NUM}" --json "title,body,labels" --repo "${GITHUB_REPOSITORY}")
+          PR_TITLE=$(echo "${PR_JSON}" | jq -r '.title')
+          PR_BODY=$(echo "${PR_JSON}" | jq -r '.body')
+          PR_LABELS=$(echo "${PR_JSON}" | jq -r '.labels[].name' | sed "s/^/- /g")
+          PR_MERGE_TITLE="${PR_TITLE} (#${PR_NUM})"
+          gh pr merge "${PR_NUM}" --squash \
+            --subject "${PR_MERGE_TITLE}" \
+            --repo "${GITHUB_REPOSITORY}" \
+            --body "${PR_BODY}
+
+          Labels:
+          ${PR_LABELS}"
diff --git a/README.md b/README.md
index a267b12..197b4c2 100644
--- a/README.md
+++ b/README.md
@@ -273,3 +273,19 @@ jobs:
   hadolint:
     uses: peaceiris/workflows/.github/workflows/hadolint.yml@v0.14.0
 ```
+
+
+
+## Reusable pull-request merger workflow
+
+```yaml
+name: pull-request
+
+on:
+  issue_comment:
+    types: [created, edited]
+
+jobs:
+  merger:
+    uses: peaceiris/workflows/.github/workflows/merger.yml@v0.16.0
+```