From 5f8fe4a374b585b3c5bc2998d5ba8e02bea4ae3e Mon Sep 17 00:00:00 2001
From: Pierre Tellier <piair338@gmail.com>
Date: Sun, 9 Mar 2025 21:19:00 +0100
Subject: [PATCH] feat: precommit hook for google java format

---
 hooks/README.md          |  2 ++
 hooks/google-java-format | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 hooks/README.md
 create mode 100755 hooks/google-java-format

diff --git a/hooks/README.md b/hooks/README.md
new file mode 100644
index 0000000..c9eae1c
--- /dev/null
+++ b/hooks/README.md
@@ -0,0 +1,2 @@
+# Useful hooks in this project
+To use, just add the content of the wanted hook in `.git/hook/pre-commit`. You may need to use `chmod +x pre-commit`
diff --git a/hooks/google-java-format b/hooks/google-java-format
new file mode 100755
index 0000000..5155e6c
--- /dev/null
+++ b/hooks/google-java-format
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Path to the Google Java Formatter JAR
+FORMATTER_JAR="$HOME/.local/share/java/google-java-format.jar"
+
+# Download the Google Java Formatter JAR if it doesn't exist
+if [ ! -f "$FORMATTER_JAR" ]; then
+  echo "Downloading Google Java Formatter..."
+  mkdir -p "$(dirname "$FORMATTER_JAR")"
+  curl -L -o "$FORMATTER_JAR" https://github.com/google/google-java-format/releases/download/v1.20.0/google-java-format-1.20.0-all-deps.jar
+fi
+
+# Format all staged Java files
+STAGED_JAVA_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep "\.java$")
+
+if [ -n "$STAGED_JAVA_FILES" ]; then
+  echo "Formatting Java files..."
+  java -jar "$FORMATTER_JAR" --skip-sorting-imports --skip-reflowing-long-strings --aosp --replace $STAGED_JAVA_FILES
+
+  # Re-stage the formatted files
+  git add $STAGED_JAVA_FILES
+fi
+
+exit 0