Add optional input from_branch (#4)

* Add optional set HEAD_TO_MERGE

* New example merge any release branch

* update CHANGELOG

* update README

Author: MiguelSavignano

CHANGELOG.md

@@ -1,3 +1,7 @@
+## v1.2.0
+
+- Add input from_branch, perform a git merge for any branch combination.
+
 ## v1.1.1
 
 - Validate inputs

README.md

@@ -1,51 +1,90 @@
 ## Merge branch action
 
-### On labeled
+Runs a git merge in your CI.
 
-Merge pull request branch using GitHub labels.
+Examples:
 
-When you set a label in a pull request this action can merge the pull request branch to other branch, useful for develop branch or staging environments.
-
-![PR](./screenshots/pr.png)
-![Checker](./screenshots/checker.png)
+### Sync branches
 
 ```yaml
-name: Merge branch
+name: Sync multiple branches
 on:
-  pull_request:
-    types: [labeled]
+  push:
+    branches:
+      - '*'
 jobs:
-  merge-branch:
+  sync-branch:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
-      - name: Merge by labeled
-        uses: devmasx/[email protected]
+
+      - name: Merge development -> staging
+        uses: devmasx/[email protected]
         with:
-          label_name: 'merged in develop'
-          target_branch: 'develop'
+          type: now
+          from_branch: development
+          target_branch: staging
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+
+      - name: Merge staging -> uat
+        uses: devmasx/[email protected]
+        with:
+          type: now
+          from_branch: staging
+          target_branch: uat
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
 ```
 
-## On any GitHub event
+### Merge current branch
 
 ```yaml
-name: Merge staging branch to uat
+name: Merge any release branch to uat
 on:
   push:
     branches:
-      - 'staging'
+      - 'release/*'
 jobs:
   merge-branch:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
-      - name: Merge to uat branch
-        uses: devmasx/[email protected]
+
+      - name: Merge staging -> uat
+        uses: devmasx/[email protected]
         with:
           type: now
-          target_branch: 'uat'
+          target_branch: uat
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+```
+
+### On labeled
+
+Merge pull request branch using GitHub labels.
+
+When you set a label in a pull request this action can merge the pull request branch to other branch, useful for develop branch or staging environments.
+
+![PR](./screenshots/pr.png)
+![Checker](./screenshots/checker.png)
+
+```yaml
+name: Merge branch with labeled
+on:
+  pull_request:
+    types: [labeled]
+jobs:
+  merge-branch:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+
+      - name: Merge by labeled
+        uses: devmasx/[email protected]
+        with:
+          label_name: 'merged in develop'
+          target_branch: 'develop'
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
 ```

action.yml

@@ -12,6 +12,12 @@ inputs:
   target_branch:
     description: 'The name of target branch to merge'
     required: true
+  from_branch:
+    description: 'Alias head_to_merge input'
+    required: false
+  head_to_merge:
+    description: 'The branch name or hash to merge. default GITHUB_SHA'
+    required: false
 runs:
   using: 'docker'
   image: 'Dockerfile'

lib/index.rb

@@ -3,7 +3,7 @@
 require_relative './services/merge_branch_service'
 
 @event = JSON.parse(File.read(ENV['GITHUB_EVENT_PATH']))
-@head_to_merge = ENV['GITHUB_SHA'] # or brach name
+@head_to_merge = ENV['INPUT_HEAD_TO_MERGE'] || ENV['INPUT_FROM_BRANCH'] || ENV['GITHUB_SHA'] # or brach name
 @repository = ENV['GITHUB_REPOSITORY']
 @github_token = ENV['GITHUB_TOKEN']