From 5a2023e94a2a30917d083aee81d8da0accebe8df Mon Sep 17 00:00:00 2001
From: Rui <102453770+ruixhuang@users.noreply.github.com>
Date: Wed, 22 May 2024 18:21:46 -0700
Subject: [PATCH] Add Github Action to automatically bump version at PR merge
 (#378)

---
 .github/workflows/bump_version.yml | 31 ++++++++++++++++++++++++++++++
 .github/workflows/ci.yml           |  4 ++--
 bump_version_gh_action.sh          | 14 ++++++++++++++
 3 files changed, 47 insertions(+), 2 deletions(-)
 create mode 100644 .github/workflows/bump_version.yml
 create mode 100755 bump_version_gh_action.sh

diff --git a/.github/workflows/bump_version.yml b/.github/workflows/bump_version.yml
new file mode 100644
index 000000000..f73020cf9
--- /dev/null
+++ b/.github/workflows/bump_version.yml
@@ -0,0 +1,31 @@
+name: Bump version on PR merge
+on:
+  pull_request:
+    branches:
+      - main
+    types: closed
+
+permissions:
+  contents: write
+  
+jobs:
+  update_version:
+    if: github.event.pull_request.merged == true
+    runs-on: macos-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          # Fetch full depth, otherwise the last step overwrites the last commit's parent, essentially removing the graph.
+          fetch-depth: 0
+
+      - name: Run bump_version_gh_action.sh
+        run: |
+          bash ./bump_version_gh_action.sh
+      - name: Amend the last commit
+        run: |
+          git config --global user.email "${GITHUB_ACTOR}@users.noreply.github.com"
+          git config --global user.name "${GITHUB_ACTOR}"
+          git commit -a --amend --no-edit
+          git push --force-with-lease
+          echo "Complete"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c44991181..6771876f0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: macos-latest
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up JDK 17
       uses: actions/setup-java@v3
@@ -25,7 +25,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up JDK 17
         uses: actions/setup-java@v3
diff --git a/bump_version_gh_action.sh b/bump_version_gh_action.sh
new file mode 100755
index 000000000..069819e32
--- /dev/null
+++ b/bump_version_gh_action.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# search for the first line that starts with "version" in build.gradle.kts
+# get the value in the quotes
+VERSION=$(grep "^version = " build.gradle.kts | sed -n 's/version = "\(.*\)"/\1/p')
+
+# increment the version number
+NEW_VERSION=$(echo $VERSION | awk -F. '{$NF = $NF + 1;} 1' | sed 's/ /./g')
+
+#if NEW_VERSION is not empty, replace the version in build.gradle.kts
+if [ -n "$NEW_VERSION" ]; then
+  sed -i '' "s/version = \"$VERSION\"/version = \"$NEW_VERSION\"/" build.gradle.kts
+  echo "Version bumped to $NEW_VERSION"
+fi