From 7a9e1d6f90ae19a50a05c8358d8fe918f81c44c6 Mon Sep 17 00:00:00 2001
From: Kenji Miyake <kenji.miyake@tier4.jp>
Date: Mon, 24 Jan 2022 15:06:55 +0900
Subject: [PATCH] feat: add sync-branches action

Signed-off-by: Kenji Miyake <kenji.miyake@tier4.jp>
---
 sync-branches/README.md   | 54 ++++++++++++++++++++++++
 sync-branches/action.yaml | 86 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 140 insertions(+)
 create mode 100644 sync-branches/README.md
 create mode 100644 sync-branches/action.yaml

diff --git a/sync-branches/README.md b/sync-branches/README.md
new file mode 100644
index 00000000..2be7f994
--- /dev/null
+++ b/sync-branches/README.md
@@ -0,0 +1,54 @@
+# sync-branches
+
+## Description
+
+This action syncs branches including remote repositories.  
+It uses [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request/) for creating pull requests and [peter-evans/enable-pull-request-automerge](https://github.com/peter-evans/enable-pull-request-automerge) for enabling auto-merge.
+
+Note that you need `workflow` permission for the token if you copy workflow files of GitHub Actions.
+
+## Usage
+
+```yaml
+jobs:
+  sync-branches:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate token
+        id: generate-token
+        uses: tibdex/github-app-token@v1
+        with:
+          app_id: ${{ secrets.APP_ID }}
+          private_key: ${{ secrets.PRIVATE_KEY }}
+
+      - name: Run sync-branches
+        uses: autowarefoundation/autoware-github-actions/sync-branches@tier4/proposal
+        with:
+          token: ${{ steps.generate-token.outputs.token }}
+          base-branch: main
+          sync-target-repository: https://github.com/autowarefoundation/autoware.git
+          sync-target-branch: main
+          sync-branch: sync-upstream
+          pr-title: "chore: sync upstream"
+          auto-merge-method: merge
+```
+
+## Inputs
+
+| Name                   | Required | Description                                             |
+| ---------------------- | -------- | ------------------------------------------------------- |
+| token                  | true     | The token for pull requests.                            |
+| base-branch            | true     | The base branch of the sync PR.                         |
+| sync-pr-branch         | true     | The branch of the sync PR .                             |
+| sync-target-repository | true     | The sync target repository.                             |
+| sync-target-branch     | true     | The sync target branch.                                 |
+| pr-title               | true     | Please see `peter-evans/create-pull-request`.           |
+| pr-body                | false    | The same as above.                                      |
+| pr-labels              | false    | The same as above.                                      |
+| pr-assignees           | false    | The same as above.                                      |
+| pr-reviewers           | false    | The same as above.                                      |
+| auto-merge-method      | false    | Please see `peter-evans/enable-pull-request-automerge`. |
+
+## Outputs
+
+None.
diff --git a/sync-branches/action.yaml b/sync-branches/action.yaml
new file mode 100644
index 00000000..5f4932c5
--- /dev/null
+++ b/sync-branches/action.yaml
@@ -0,0 +1,86 @@
+name: sync-branches
+description: ""
+
+inputs:
+  token:
+    description: ""
+    required: true
+  base-branch:
+    description: ""
+    required: true
+  sync-pr-branch:
+    description: ""
+    required: true
+  sync-target-repository:
+    description: ""
+    required: true
+  sync-target-branch:
+    description: ""
+    required: true
+  pr-title:
+    description: ""
+    required: true
+  pr-body:
+    description: ""
+    required: false
+    default: ""
+  pr-labels:
+    description: ""
+    required: false
+    default: ""
+  pr-assignees:
+    description: ""
+    required: false
+    default: ""
+  pr-reviewers:
+    description: ""
+    required: false
+    default: ""
+  auto-merge-method:
+    description: ""
+    required: false
+    default: ""
+
+runs:
+  using: composite
+  steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        ref: ${{ inputs.base-branch }}
+
+    - name: Sync branches
+      run: |
+        git remote add sync-target "${{ inputs.sync-target-repository }}"
+        git fetch -pPtf --all
+        git reset --hard "sync-target/${{ inputs.sync-target-branch }}"
+      shell: bash
+
+    - name: Create PR
+      id: create-pr
+      uses: peter-evans/create-pull-request@v3
+      with:
+        token: ${{ inputs.token }}
+        base: ${{ inputs.base-branch }}
+        branch: ${{ inputs.sync-pr-branch }}
+        title: ${{ inputs.pr-title }}
+        body: ${{ inputs.pr-body }}
+        labels: ${{ inputs.pr-labels }}
+        assignees: ${{ inputs.pr-assignees }}
+        reviewers: ${{ inputs.pr-reviewers }}
+        signoff: true
+        delete-branch: true
+
+    - name: Check outputs
+      run: |
+        echo "Pull Request Number - ${{ steps.create-pr.outputs.pull-request-number }}"
+        echo "Pull Request URL - ${{ steps.create-pr.outputs.pull-request-url }}"
+      shell: bash
+
+    - name: Enable auto-merge
+      if: ${{ inputs.auto-merge-method != '' && steps.create-pr.outputs.pull-request-operation == 'created' }}
+      uses: peter-evans/enable-pull-request-automerge@v1
+      with:
+        token: ${{ inputs.token }}
+        pull-request-number: ${{ steps.create-pr.outputs.pull-request-number }}
+        merge-method: ${{ inputs.auto-merge-method }}