# .bash_gitprompt
# Git Commands
#
# original sources - https://github.com/matthewmccullough/MatthewsShellConfig/
# modified by Dongsu Park <dpark AT posteo.net>
#
# if $GITPROMPT_NOCOLOR is set to 1, prompt will be printed without colors.
# if $GITPROMPT_NOSTATUS is set to 1, only "git branch" will be executed
# instead of "git status" at every prompt.

if [ "$GITPROMPT_NOCOLOR" = "1" ]; then
        RED=""
     YELLOW=""
      GREEN=""
       BLUE=""
  LIGHT_RED=""
LIGHT_GREEN=""
      WHITE=""
 LIGHT_GRAY=""
 COLOR_NONE=""
else
        RED="\[\033[0;31m\]"
     YELLOW="\[\033[0;33m\]"
      GREEN="\[\033[0;32m\]"
       BLUE="\[\033[0;34m\]"
  LIGHT_RED="\[\033[1;31m\]"
LIGHT_GREEN="\[\033[1;32m\]"
      WHITE="\[\033[1;37m\]"
 LIGHT_GRAY="\[\033[0;37m\]"
 COLOR_NONE="\[\e[0m\]"
fi

function parse_git_branch {
    if [ "$GITPROMPT_NOSTATUS" = "1" ]; then
        git_branch=$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')
        [ -n "${git_branch}" ] && git_branch=" (${git_branch})"
        echo "${git_branch}"
    else
        git rev-parse --git-dir &> /dev/null
        git_status="$(git status 2> /dev/null)"
        branch_pattern="^# On branch ([^${IFS}]*)"
        remote_pattern="# Your branch is (.*) of"
        diverge_pattern="# Your branch and (.*) have diverged"

        if [[ ! ${git_status}} =~ "working directory clean" ]]; then
            state="${RED}⚡"
        fi
        # add an else if or two here if you want to get more specific
        if [[ ${git_status} =~ ${remote_pattern} ]]; then
            if [[ ${BASH_REMATCH[1]} == "ahead" ]]; then
                remote="${YELLOW}↑"
            else
                remote="${YELLOW}↓"
            fi
        fi
        if [[ ${git_status} =~ ${diverge_pattern} ]]; then
            remote="${YELLOW}↕"
        fi
        if [[ ${git_status} =~ ${branch_pattern} ]]; then
            branch=${BASH_REMATCH[1]}
            echo " (${branch})${remote}${state}"
        fi
    fi
}

function git_dirty_flag {
    git status 2> /dev/null | grep -c : | awk '{if ($1 > 0) print "⚡"}'
}

function prompt_func() {
    previous_return_value=$?;
    # The lowercase w is the full current working directory
    #prompt="${TITLEBAR}${BLUE}[${RED}\w${GREEN}$(parse_git_branch)${BLUE}]${COLOR_NONE}"

    # Capital W is just the trailing part of the current working directory
    # personalized by Dongsu Park
    prompt="${TITLEBAR}${BLUE}${RED}\u@\h `dirs`${GREEN}$(parse_git_branch) ${BLUE}{\!}${COLOR_NONE}"

    if test $previous_return_value -eq 0
    then
        # personalized by Dongsu Park
        PS1="${prompt} "
        #PS1="${prompt}> "

        # OLD_PROMPT should be set back again, to avoid confusions in branch names when typing ^C or so.
        OLD_PROMPT=$PS1
    else
        # don't change the prompt (use the default one) if it's not a git dir
        PS1=$OLD_PROMPT
    fi
}

# Preserve current prompt
OLD_PROMPT=$PS1
PROMPT_COMMAND=prompt_func