From fc174e240685ba61fdc7422f02ea5edea2171e6a Mon Sep 17 00:00:00 2001
From: Chris Buckley <chris@cmbuckley.co.uk>
Date: Mon, 10 Jan 2022 00:10:05 +0000
Subject: [PATCH] Add skip_checkout option

---
 README.md                  |  3 +++
 action.yml                 |  4 ++++
 entrypoint.sh              | 10 +++++++---
 tests/git-auto-commit.bats | 14 ++++++++++++++
 4 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 246c3b8d..c584d9d9 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,9 @@ The following is an extended example with all possible options available for thi
     # Optional. Skip internal call to `git fetch`
     skip_fetch: true    
     
+    # Optional. Skip internal call to `git checkout`
+    skip_checkout: true
+
     # Optional. Prevents the shell from expanding filenames. 
     # Details: https://www.gnu.org/software/bash/manual/html_node/Filename-Expansion.html
     disable_globbing: true
diff --git a/action.yml b/action.yml
index 540b9005..03a8557d 100644
--- a/action.yml
+++ b/action.yml
@@ -60,6 +60,10 @@ inputs:
     description: Skip the call to git-fetch.
     required: false
     default: false
+  skip_checkout:
+    description: Skip the call to git-checkout.
+    required: false
+    default: false
   disable_globbing:
     description: Stop the shell from expanding filenames (https://www.gnu.org/software/bash/manual/html_node/Filename-Expansion.html)
     default: false
diff --git a/entrypoint.sh b/entrypoint.sh
index 406f03f4..0d876086 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -55,9 +55,13 @@ _switch_to_branch() {
         git fetch --depth=1;
     fi
 
-    # Switch to branch from current Workflow run
-    # shellcheck disable=SC2086
-    git checkout $INPUT_BRANCH;
+    if "$INPUT_SKIP_CHECKOUT"; then
+        echo "::debug::git-checkout has not been executed";
+    else
+        # Switch to branch from current Workflow run
+        # shellcheck disable=SC2086
+        git checkout $INPUT_BRANCH;
+    fi
 }
 
 _add_files() {
diff --git a/tests/git-auto-commit.bats b/tests/git-auto-commit.bats
index 654fb7c6..bdadd356 100644
--- a/tests/git-auto-commit.bats
+++ b/tests/git-auto-commit.bats
@@ -24,6 +24,7 @@ setup() {
     export INPUT_PUSH_OPTIONS=""
     export INPUT_SKIP_DIRTY_CHECK=false
     export INPUT_SKIP_FETCH=false
+    export INPUT_SKIP_CHECKOUT=false
     export INPUT_DISABLE_GLOBBING=false
 
     # Configure Git
@@ -381,6 +382,19 @@ git_auto_commit() {
     assert_line "::debug::git-fetch has not been executed"
 }
 
+@test "If SKIP_CHECKOUT is true git-checkout will not be called" {
+
+    touch "${FAKE_LOCAL_REPOSITORY}"/new-file-{1,2,3}.txt
+
+    INPUT_SKIP_CHECKOUT=true
+
+    run git_auto_commit
+
+    assert_success
+
+    assert_line "::debug::git-checkout has not been executed"
+}
+
 @test "It pushes generated commit and tag to remote and actually updates the commit shas" {
     INPUT_BRANCH=""
     INPUT_TAGGING_MESSAGE="v2.0.0"