zsh function for switching git users (for team, multiple accounts etc.)

git_user_switcher.zsh

function git_user_switcher() {
  # Define an associative array to store the user settings
  typeset -A -g git_users

  # Add the users to the dictionary
  # Format: username "name email gpg_key"
  git_users=(
    adam "adam [email protected]"
  )

  function git-user() {
    # If no arguments are provided, print the current git user info
    if [ $# -eq 0 ]; then
      if git rev-parse --is-inside-work-tree > /dev/null 2>&1; then
        if git config user.signingkey > /dev/null; then
          echo "Git user: $(git config user.name) <$(git config user.email)>, GPG Key: $(git config user.signingkey)"
        else
          echo "Git user: $(git config user.name) <$(git config user.email)>"
        fi
      else
        echo "Not a git repository"
      fi
      return
    fi

    # Check if the user exists in the dictionary
    if [[ -z "${git_users[$1]}" ]]; then
      echo "User $1 not found"
      return 1
    fi

    # Check if the current directory is a git repository
    if ! git rev-parse --is-inside-work-tree > /dev/null 2>&1; then
      echo "Not a git repository"
      return 1
    fi

    # Split the user settings into an array
    local user_settings=("${(@s/ /)git_users[$1]}")

    # Set the git config
    git config user.name "${user_settings[1]}"
    git config user.email "${user_settings[2]}"

    # If a GPG key is provided, set it
    if [ -n "${user_settings[3]}" ]; then
      git config user.signingkey "${user_settings[3]}"
      echo "Git user has been set to: ${user_settings[1]} <${user_settings[2]}>, GPG Key: ${user_settings[3]}"
    else
      # If no GPG key is provided, unset it
      git config --unset user.signingkey
      echo "Git user has been set to: ${user_settings[1]} <${user_settings[2]}>"
    fi
  }
}; git_user_switcher