#!/usr/bin/env bash
# ############################################################################
# # PATH: /opt/local/config/rc/bash               AUTHOR: Hoefkens.j@gmail.com
# # FILE: 311_history.conf                                 2023-04-04 09:33:40
# ############################################################################
#
HISTFOLDER="/var/cache/bash/history"
HISTGLOBAL="${HISTFOLDER}/history.glob"
HISTSESSION="${HISTFOLDER}/history.session.$$"
HISTFILE="${HISTFOLDER}/history.$$"
HISTSESSIONS="${HISTFOLDER}/history.[0-9]*"
HISTSIZE=-1 ; HISTFILESIZE="$HISTSIZE" ; HISTCONTROL=''

function _orphants {
	# detect leftover files from crashed sessions and merge them back
	local _active _pattern _orphaned
	_active=$(pgrep `ps -p $$ -o comm=`)
	_pattern=`for pid in $_active; do echo -n "-e \.${pid}\$ "; done`
	_orphaned=`ls $HISTSESSIONS 2>/dev/null | grep -v $_pattern`
	function _merge {
		echo Merging orphaned history files:
		for f in $_orphaned; do
			echo "  `basename $f`"
			cat $f >> $HISTGLOBAL
			\rm $f
		done
	}
	function _remove {
		for f in $_orphaned; do
			gio trash $f 2>/dev/null || rm -fv $f
		done
	}
	[[ -n "$1" ]] && "$1"
	unset _merge _remove
}
function _bash_history {
	builtin history -a "$HISTFILE"
	builtin history -a "$HISTGLOBAL"
	builtin history -c
	#env cat "$HISTGLOBAL" > "$HISTFILE"
	#env cat "$HISTSESSION" >> "$HISTFILE"
	builtin history -r "$HISTGLOBAL"
	builtin history -r "$HISTFILE"
}
function history_merge {
	_orphants _merge
}
function history {
	_bash_history
	builtin history "$@"
}
[[ "${PROMPT_COMMAND}" != *"_bash_history"* ]] && export PROMPT_COMMAND="_bash_history ; ${PROMPT_COMMAND}"