display current stack in prompt but only make call when changing directory

robbyrussell-custom.zsh-theme

get_pulumi_info() {
  CONFIG_FILE_NAME="Pulumi.yaml"
  CONTAINING_FOLDER="$(pwd)"
  while [[ "$CONTAINING_FOLDER" != "" && ! -e "$CONTAINING_FOLDER/$CONFIG_FILE_NAME" ]]; do
    CONTAINING_FOLDER="${CONTAINING_FOLDER%/*}"
  done
  YAML_FILE="${CONTAINING_FOLDER}/${CONFIG_FILE_NAME}"

  if [[ -f "$YAML_FILE" ]]; then
    WORKSPACE_NAME="$(cat $YAML_FILE | grep name: | head -1 | sed 's/name: //g ')"
    WORKSPACE_FILE_PATH="$HOME/.pulumi/workspaces/$(ls $HOME/.pulumi/workspaces | grep "^$WORKSPACE_NAME-" | head -1)"
    STACK_NAME="$(jq .stack $WORKSPACE_FILE_PATH -r)"
    echo "%B%F{blue}pulumi(%F{red}$STACK_NAME%F{blue})%b%F{reset} "
  fi
}

PROMPT="%(?:%{$fg_bold[green]%}➜ :%{$fg_bold[red]%}➜ )"
PROMPT+=' %{$fg[cyan]%}%c%{$reset_color%} $(get_pulumi_info)$(git_prompt_info)'

ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg_bold[blue]%}git:(%{$fg[red]%}"
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%} "
ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[blue]%}) %{$fg[yellow]%}✗"
ZSH_THEME_GIT_PROMPT_CLEAN="%{$fg[blue]%})"

This file would go into ~/.oh-my-zsh/themes