# generate comment
gpt = "!f() { git diff $1 | sgpt 'Write concise, informative commit messages: Start with a summary in imperative mood, explain the 'why' behind changes, keep the summary under 50 characters, use bullet points for multiple changes, and reference related issues or tickets. What you write will be passed to git commit -m \"[message]\"'; }; f"

Write short commit messages:
- The first line should be a short summary of the changes
- Remember to mention the files that were changed, and what was changed
- Explain the 'why' behind changes
- Use bullet points for multiple changes
- Tone: Use a LOT of emojis, be funny, and expressive. Feel free to be profane, but don't be offensive
- If there are no changes, or the input is blank - then return a blank string

Think carefully before you write your commit message.

The output format should be:

Summary of changes
- changes
- changes

What you write will be passed directly to git commit -m "[message]"

gpt = "!f() { git diff $1 | llm -s \"$(cat ~/.config/prompts/commit-system-prompt.txt)\" }; f"

llm = "!f() { \
    if git diff --quiet $1; then \
        echo \"No changes to commit. Aborting.\"; \
    else \
        commit_msg=$(git diff $1 | llm -s \"$(cat ~/.config/prompts/commit-system-prompt.txt)\"); \
        echo \"Commit message:\n$commit_msg\"; \
        read -p \"Do you want to commit with this message? [y/N] \" confirm; \
        if [[ $confirm =~ ^[Yy]$ ]]; then \
            git commit -m \"$commit_msg\"; \
        else \
            echo \"Commit aborted.\"; \
        fi; \
    fi; \
}; f"

llm-staged = "!f() { \
    git add -p; \
    if ! git diff --cached --quiet; then \
        commit_msg=$(git diff --cached | llm -s \"$(cat ~/.config/prompts/commit-system-prompt.txt)\"); \
        echo \"Commit message:\n$commit_msg\"; \
        read -p \"Do you want to commit with this message? [y/N] \" confirm; \
        if [[ $confirm =~ ^[Yy]$ ]]; then \
            git commit -m \"$commit_msg\"; \
        else \
            git reset HEAD .; \
            echo \"Commit aborted.\"; \
        fi; \
    else \
        echo \"No changes staged for commit. Aborting.\"; \
    fi; \
}; f"

#!/bin/sh

# Exit if the `SKIP_LLM_GITHOOK` environment variable is set
if [ ! -z "$SKIP_LLM_GITHOOK" ]; then
  exit 0
fi

# ANSI color codes for styling the output
RED='\033[0;31m'    # Sets text to red
GREEN='\033[0;32m'  # Sets text to green
YELLOW='\033[0;33m' # Sets text to yellow
BLUE='\033[0;34m'   # Sets text to blue
NC='\033[0m'        # Resets the text color to default, no color


# Function to display a spinning animation during the LLM processing
spin_animation() {
  # Array of spinner characters for the animation
  spinner=("⠋" "⠙" "⠹" "⠸" "⠼" "⠴" "⠦" "⠧" "⠇" "⠏")
  # Infinite loop to keep the animation running
  while true; do
    for i in "${spinner[@]}"; do
      tput civis  # Hide the cursor to enhance the animation appearance
      tput el1    # Clear the line from the cursor to the beginning to display the spinner
      printf "\\r${YELLOW}%s${NC} Generating LLM commit message..." "$i"  # Print the spinner and message
      sleep 0.1   # Delay to control the speed of the animation
      tput cub 32 # Move the cursor back 32 columns to reset the spinner position
    done
  done
}

# Check if the commit is a merge commit based on the presence of a second argument
if [ -n "$2" ]; then
  exit 0  # Exit script if it's a merge commit, no custom message needed
fi

# Check if the `llm` command is installed
if ! command -v llm &> /dev/null; then
  echo "${RED}Error: 'llm' command is not installed. Please install it and try again.${NC}"
  exit 1
fi

# Start the spinning animation in the background
spin_animation &
spin_pid=$!  # Capture the process ID of the spinning animation

# Generate the commit message using `git diff` piped into `llm` command
# The LLM command takes a system prompt from a file as input
if ! commit_msg=$(git diff --cached | llm -s "$(cat ~/.config/prompts/commit-system-prompt.txt)" 2>&1); then
  # Stop the spinning animation by killing its process
  kill $spin_pid
  wait $spin_pid 2>/dev/null  # Wait for the process to terminate and suppress error messages

  # Finalizing output
  tput cnorm  # Show the cursor again
  printf "\\n"  # Move the cursor to the next line

  printf "${RED}Error: 'llm' command failed to generate the commit message:\\n${commit_msg}${NC}\\n\\nManually set the commit message"
  exit 1
fi

# Stop the spinning animation by killing its process
kill $spin_pid
wait $spin_pid 2>/dev/null  # Wait for the process to terminate and suppress error messages

# Finalizing output
tput cnorm  # Show the cursor again
echo  # Move the cursor to the next line

# Display the generated commit message with color-coded headings
echo "${BLUE}=== Generated Commit Message ===${NC}"
echo "${GREEN}$commit_msg${NC}"
echo "${BLUE}=================================${NC}"
echo

# Write the generated commit message to the specified file (usually the commit message file in .git)
echo "$commit_msg" > "$1"

🤖💬 AI-powered git commit messages FTW! 🚀🎉
- Updated content/post/2024-03-11-ai-git-commit-messages.md
- Added links to my actual git hook and prompt in dotfiles repo 🔗
- Removed unnecessary code block formatting for the output example 🗑️
- AI is making us lazy devs, but who cares when commit messages are this awesome! 😂👌

pipx install llm

llm keys set openai

llm models default gpt-4-turbo

mkdir -p ~/.config/prompts

Write short commit messages:
- The first line should be a short summary of the changes
- Remember to mention the files that were changed, and what was changed
- Explain the 'why' behind changes
- Use bullet points for multiple changes
- Tone: Use a LOT of emojis, be funny, and expressive. Feel free to be profane, but don't be offensive
- If there are no changes, or the input is blank - then return a blank string

Think carefully before you write your commit message.

The output format should be:

Summary of changes
- changes
- changes

What you write will be passed directly to git commit -m "[message]"

mkdir -p ~/.git_hooks

touch ~/.git_hooks/prepare-commit-msg

chmod +x ~/.git_hooks/prepare-commit-msg

git config --global core.hooksPath ~/.git_hooks

git commit -m "fixed issue #420"