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

if isShell "bash"; then

## 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).
    if [ -f /etc/bash_completion ]; then
        . /etc/bash_completion
    fi

## 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'

    export FIGNORE=".o:~"			# A list of suffixes to ignore when performing filename completion
    set filec				# To search and fill the complete name of a file (with <Esc>)



##======================================================================
## History management
##======================================================================
    export HISTCONTROL=ignoredups # don't put duplicate lines in the history. See bash(1) for more options
    export HISTFILESIZE=1000 # Define number of previous commands stored
    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 ofa 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 $COLUMNS value, as well as path, time, and other variables.
    function PSBAR ()
    {
	# Initialization.
	    BARCOLOR=$BBlue
	    OUTPUT="$BARCOLOR["
	    SYMBOLVAR='='
	    CENTERVAR=" $(date +%H:%M:%S) "

	# Truncated path.
	    local PWDMAXLEN=$(($COLUMNS/2-${#CENTERVAR}/2-3)) # '3' stands for '[ $SYMBOLVAR'.
	    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-${#CENTERVAR}/2-3)) ] # '3' stands for '$SYMBOLVAR ]'
	    then
		    LOGINFO=$USER
		    if [ ${#LOGINFO} -gt $(($COLUMNS/2-${#CENTERVAR}/2-3)) ] # '3' stands for '$SYMBOLVAR ]'
		    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.
	    for i in $( seq $(($COLUMNS/2-${#LEFTSIDEVAR}-${#CENTERVAR}/2-1)) ) # '1' stands for '['
	    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)) ) # '1' stands for ']'
	    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\[\e[m\] \[\e[1;32m\]\$\[\e[m\] '

fi