aicommit.zsh

# AI commit message generator
#
# Assumes LM Studio is running locally and jq is installed
#
# Put this in .zprofile and you can run `aicommit` from any Git repository
aicommit() {
  local diff
  diff=$(git diff --cached)

  if [ -z "$diff" ]; then
    echo "No staged changes to commit."
    return 1
  fi

  echo "Generating commit message from diff..."

  # Construct JSON payload safely with jq
  local payload
  payload=$(jq -n --arg diff "$diff" --arg model "openai/gpt-oss-20b" '
    {
      model: $model,
      messages: [
        {
          role: "system",
          content: "You are a helpful assistant that writes concise and descriptive Git commit messages."
        },
        {
          role: "user",
          content: "Generate a Git commit message for the following diff. Do not use markdown for the first line. The first line should be max 80 characters.\n\n\($diff)"
        }
      ]
    }
  ')

  # Call LM Studio API - store to a file to ease jq parsing
  local response
  response=$(curl -s http://localhost:1234/v1/chat/completions \
    -H "Content-Type: application/json" \
    -d "$payload" > /tmp/lm_commit_response.json)

  # Try to extract commit message
  message=$(jq -r '.choices[0].message.content' /tmp/lm_commit_response.json)

  if [ -z "$message" ]; then
    echo "❌ Failed to get commit message from LM Studio."
    return 1
  fi

  echo -e "\n💡 Suggested commit message:\n\n$message\n"
  read "confirm?Use this message? [Y/n]"

  case "$confirm" in
    [nN]*) echo "Aborted."; return 1 ;;
    [yY]*) git commit -m "$message" ;;
  esac
}