## -*- mode:sh -*- #
################################################################################
## Bash specific options
################################################################################

## Enable programmable completion features (you don't need to enable
## this, if it's already enabled in /etc/bash.bashrc and /etc/profile
## sources /etc/bash.bashrc).
[ -f /etc/bash_completion ] && . /etc/bash_completion

## Sudo completion
complete -cf sudo

set +o nounset	# Otherwise some completions will fail
set completion-ignore-case on
set show-all-if-ambiguous on

## Use TAB to switch between completions instead of waiting for the next character.
#bind '"\t":menu-complete'

## A list of suffixes to ignore when performing filename completion
export FIGNORE=".o:~"

## To search and fill the complete name of a file (with <Esc>)
set filec

##======================================================================
## History management
##======================================================================

# Don't put duplicate lines in the history. See bash(1) for more options.
export HISTCONTROL=ignoredups

# Define number of previous commands stored.
export HISTFILESIZE=1000

export HISTIGNORE="&:bg:fg:ll:h:ls:la:la:lk:clear:exit:history"
export HISTTIMEFORMAT="%Y-%m-%d_%H:%M:%S_%a  "

##======================================================================
## Various options
##======================================================================
set -o notify                    # Jobs notify shell about their states immediately.
#set ignoreeof                   # To avoid accidentally quitting the shell with <Ctrl-D>.
#shopt -u mailwarn               # Disable the shell ability to warn about incoming mail.
shopt -s cdable_vars             # If cd arg is not valid, assumes its a var defining a dir.
shopt -s cdspell                 # To correct minor error in the directory spelling (during cd).
shopt -s checkhash
shopt -s checkwinsize            # Update the value of LINES and COLUMNS after each command if altered.
shopt -s cmdhist                 # Save multi-line commands in history as single line.
shopt -s dirspell
shopt -s dotglob                 # Include dotfiles in pathname expansion.
shopt -s expand_aliases          # Expand aliases.
shopt -s extglob                 # Enable extended pattern-matching features.
shopt -s histappend              # Append to (not overwrite) the history file.
shopt -s hostcomplete            # Attempt hostname expansion when @ is at the beginning of a word.
shopt -s no_empty_cmd_completion # No completion on an empty line.
shopt -s nocaseglob              # Pathname expansion will be treated as case-insensitive.
shopt -s progcomp                # To enable the programmable completion.

##==============================================================================
## PS1 -- Full width bar with informations.
##==============================================================================

## An external function is needed to update $COLUMNS value, as well as path, time, and other variables.
_psbar ()
{
	## Initialization.
	BARCOLOR=$BBlue
	OUTPUT="$BARCOLOR["
	SYMBOLVAR='='
	CENTERVAR=" $(date +%H:%M:%S) "

	## Truncated path.
    ## '3' stands for '[ $SYMBOLVAR'.
	local PWDMAXLEN=$(($COLUMNS/2-${#CENTERVAR}/2-3))
	local TRUNC_SYMBOL="..."
	if [[ $PWD == $HOME* ]]; then
		newPWD="~${PWD#$HOME}"
	else
		newPWD=${PWD}
	fi
	if [ ${#newPWD} -gt $PWDMAXLEN ]; then
	    local PWDOFFSET=$(( ${#newPWD} - $PWDMAXLEN + ${#TRUNC_SYMBOL} ))
		newPWD="${TRUNC_SYMBOL}${newPWD:$PWDOFFSET:$PWDMAXLEN}"
	fi

	## Truncated login information.
	local LOGINFO="$(whoami)@$HOSTNAME"
	if [ ${#LOGINFO} -gt $(($COLUMNS/2-${#CENTERVAR}/2-3)) ]
	then
		LOGINFO=$USER
		if [ ${#LOGINFO} -gt $(($COLUMNS/2-${#CENTERVAR}/2-3)) ]
		then
			unset LOGINFO
		fi
	fi

	## Left and right side. Empty if terminal width is too small.
	if [ $COLUMNS -gt 50 ]
	then
		LEFTSIDEVAR="$newPWD "
		RIGHTSIDEVAR=" $LOGINFO"
	fi

	## Left side.
	OUTPUT="$OUTPUT$BPurple$LEFTSIDEVAR"


	## Reset bar color
	OUTPUT="$OUTPUT$BARCOLOR"

	## In case of odd values.
	if [ $(($COLUMNS%2)) -eq 1 ]
	then
		OUTPUT="$OUTPUT$SYMBOLVAR"
	fi

	## Fill 'OUTPUT' variable with the desired chars.
    ## '1' stands for '['
	for i in $( seq $(($COLUMNS/2-${#LEFTSIDEVAR}-${#CENTERVAR}/2-1)) )
	do
		OUTPUT="$OUTPUT$SYMBOLVAR"
	done

	## Center.
	OUTPUT="$OUTPUT$Color_Off$CENTERVAR"

	## Reset bar color
	OUTPUT="$OUTPUT$BARCOLOR"

	## Fill 'OUTPUT' variable with the desired chars.
	for i in $( seq $(($COLUMNS/2-${#CENTERVAR}/2-${#RIGHTSIDEVAR}-1)) )
	do
		OUTPUT="$OUTPUT$SYMBOLVAR"
	done

	## Right side.
	OUTPUT="$OUTPUT$BGreen$RIGHTSIDEVAR"

	## Reset bar color
	OUTPUT="$OUTPUT$BARCOLOR"

	## Close bar
	OUTPUT="$OUTPUT]\n"

	## Prompt.
	if [ $(id -u) -eq 0 ]
	then
		## Root access
		OUTPUT="$OUTPUT$BRed# $Color_Off"
	else
		## Normal user
		OUTPUT="$OUTPUT$BYellow$ $Color_Off"
	fi

	## Set result to PS1.
	PS1="$OUTPUT"
}


##==============================================================================
## Add informations to history.
##==============================================================================
#PROMPT_COMMAND='hpwd=$(history 1); hpwd="${hpwd# *[0-9]*  }"; if [[ ${hpwd%% *} == "cd" ]]; then cwd=$OLDPWD; else cwd=$PWD; fi; hpwd="${hpwd% ### *} ### $cwd"; history -s "$hpwd;"'

##==============================================================================
## PS1
##==============================================================================

## PS1 using _psbar function.
#PROMPT_COMMAND='_psbar'

## Simple PS1
PS1='\[\e[0;32m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[1;32m\]\$\[\e[m\] '