# prompt style and colors based on Steve Losh's Prose theme:
# http://github.com/sjl/oh-my-zsh/blob/master/themes/prose.zsh-theme
#
# vcs_info modifications from Bart Trojanowski's zsh prompt:
# http://www.jukie.net/bart/blog/pimping-out-zsh-prompt

function virtualenv_info {
    [ $VIRTUAL_ENV ] && echo '('`basename $VIRTUAL_ENV`') '
}
PR_GIT_UPDATE=1

setopt prompt_subst
autoload colors
colors

autoload -U add-zsh-hook
autoload -Uz vcs_info


# check-for-changes can be really slow.
# you should disable it, if you work with large repositories
zstyle ':vcs_info:*:prompt:*' check-for-changes true

# set formats
# %b - branchname
# %u - unstagedstr (see below)
# %c - stagedstr (see below)
# %a - action (e.g. rebase-i)
# %R - repository path
# %S - path in the repository
PR_RST="%{${reset_color}%}"
FMT_BRANCH="(%{$fg[magenta]%}%b%u%c${PR_RST})"
FMT_ACTION="(%{$fg[green]%}%a${PR_RST})"
FMT_UNSTAGED="%{$fg[yellow]%}!"
FMT_STAGED="%{$fg[yellow]%}?"

zstyle ':vcs_info:*:prompt:*' unstagedstr   "${FMT_UNSTAGED}"
zstyle ':vcs_info:*:prompt:*' stagedstr     "${FMT_STAGED}"
zstyle ':vcs_info:*:prompt:*' actionformats "${FMT_BRANCH}${FMT_ACTION}"
zstyle ':vcs_info:*:prompt:*' formats       "${FMT_BRANCH}"
zstyle ':vcs_info:*:prompt:*' nvcsformats   ""


function steeef_preexec {
    case "$(history $HISTCMD)" in
        *git*)
            PR_GIT_UPDATE=1
            ;;
    esac
}
add-zsh-hook preexec steeef_preexec

function steeef_chpwd {
    PR_GIT_UPDATE=1
}
add-zsh-hook chpwd steeef_chpwd

function steeef_precmd {
    if [[ -n "$PR_GIT_UPDATE" ]] ; then
        vcs_info 'prompt'
        PR_GIT_UPDATE=
    fi
}
add-zsh-hook precmd steeef_precmd

PROMPT=$'
%{$fg[magenta]%}%n%{$reset_color%} at %{$fg[yellow]%}%m%{$reset_color%} in %{$fg_bold[green]%}%~%{$reset_color%} $vcs_info_msg_0_
$(virtualenv_info)$ '