#!/bin/sh# A hook called by `git commit` to adjust the commit message right before the user sees it############################################################################################ This script is called by `git commit` after commit message was initialized and right before# an editor is launched.## It receives one to three arguments:## $1 - the path to the file containing the commit message. It can be edited to change the message.# $2 - the kind of source of the message contained in $1. Possible values are#      "message" - a message was provided via `-m` or `-F`#      "commit" - `-c`, `-C` or `--amend` was given#      "squash" - the `.git/SQUASH_MSG` file exists#      "merge" - this is a merge or the `.git/MERGE` file exists#      "template" - `-t` was provided or `commit.template` was set# $3 - If $2 is "commit" then this is the hash of the commit.#      It can also take other values, best understood by studying the source code at#      https://github.com/git/git/blob/aa9166bcc0ba654fc21f198a30647ec087f733ed/builtin/commit.c#L745## The following example## To enable this hook remove the `.sample` suffix from this file entirely. COMMIT_MSG_FILE=$1 # Check if the commit message file is empty or already contains a messageif [ -s "$COMMIT_MSG_FILE" ]; then  # If the commit message is already provided, exit without making any changes.  # This can happen if the user provided a message via `-m` or a template.  exit 0fi # Retrieve the branch name from the current HEAD commitBRANCH_NAME=$(git symbolic-ref --short HEAD) # Generate a default commit message based on the branch nameDEFAULT_MSG="" case "$BRANCH_NAME" in  "feature/*")    DEFAULT_MSG="feat: "    ;;  "bugfix/*")    DEFAULT_MSG="fix: "    ;;  *)    DEFAULT_MSG="chore: "    ;;esac # Set the commit message that will be presented to the user.echo "$DEFAULT_MSG" > "$COMMIT_MSG_FILE"