From e9eab79ec3359af7fc6663db6bf6b6da56c89b35 Mon Sep 17 00:00:00 2001
From: Sadman Ahmed Shanto <shanto@usc.edu>
Date: Fri, 26 Jul 2024 22:06:59 -0700
Subject: [PATCH] feat: added pre-commit hooks to auto encrypt and stage
 lab_members.json file when it is updated

---
 README.md                |  6 ++++++
 scripts/hooks/pre-commit | 23 +++++++++++++++++++++++
 scripts/setup_hooks.sh   |  8 ++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 scripts/hooks/pre-commit
 create mode 100644 scripts/setup_hooks.sh

diff --git a/README.md b/README.md
index 3c7803e..1074d1e 100644
--- a/README.md
+++ b/README.md
@@ -66,6 +66,12 @@ This project serves as a lab manager for the [Levenson-Falk Lab](https://dornsif
 4. **Commit Encrypted Files to Repository:**
    Commit and push the encrypted files (`*.enc`) to your repository.
 
+5. Run the following command to set up Git hooks:
+
+```bash
+./scripts/setup-hooks.sh
+```
+
 ### GitHub Actions Setup
 
 1. **Create GitHub Secrets:**
diff --git a/scripts/hooks/pre-commit b/scripts/hooks/pre-commit
new file mode 100644
index 0000000..2491779
--- /dev/null
+++ b/scripts/hooks/pre-commit
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Check if lab_members.json is staged for commit
+if git diff --cached --name-only | grep -q 'lab_members.json'; then
+    echo "lab_members.json has changed. Encrypting the file..."
+
+    # Prompt for the secret key
+    read -sp "Enter encryption key: " SECRET_KEY
+    echo
+
+    # Encrypt lab_members.json
+    openssl aes-256-cbc -salt -a -e -in lab_members.json -out lab_members.json.enc -pass pass:$SECRET_KEY -pbkdf2
+
+    # Clear the secret key variable
+    unset SECRET_KEY
+
+    # Stage the encrypted file
+    git add lab_members.json.enc
+
+    # Notify the user
+    echo "lab_members.json has been encrypted and lab_members.json.enc has been staged for commit."
+fi
+
diff --git a/scripts/setup_hooks.sh b/scripts/setup_hooks.sh
new file mode 100644
index 0000000..ef4923b
--- /dev/null
+++ b/scripts/setup_hooks.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# Copy hooks to .git/hooks
+cp scripts/hooks/pre-commit .git/hooks/pre-commit
+chmod +x .git/hooks/pre-commit
+
+echo "Git hooks installed."
+