#!/bin/bash

# This script creates a file in /tmp and
# opens it with first visual editor found in a search list for editors

# Copyright: 2014
# Author:    Dewey Garrett <dgarrett@panix.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

ofile=/tmp/linuxcnc_info.txt
PROG=$(basename "$0")

usage () {
  cat <<EOF
$PROG creates file $ofile
USAGE:
  $PROG [options]
  options:
    -s  silent (suppress automatic opening of file)
    -h  help
EOF
exit 1
}

git_commit () {
  dir=$(dirname "$0")
  if [ "${dir}" = "/usr/bin" ] ; then
    echo NA
  else
    ( cd "$dir" && git rev-parse --short HEAD 2>/dev/null )
  fi
}

# try to find a visual editor to show created file
# use list with existing preference first, then other common editors
editors="$VISUAL gedit mousepad geany nedit nano gvim abiword"
VIEWER=""
for e in $editors ; do
  if [  -x "$(command -v "$e")" ] ; then
    VIEWER=$e
    break #use first editor found
  fi
done

while getopts hs OPT; do
  case $OPT in
    s) VIEWER="";;
    h) usage;;
    *) usage;;
  esac
done

[ -z "$VIEWER" ] && echo "No VIEWER: output to $ofile"

# all subsequent output:
exec 1>$ofile
exec 2>&1

function show () {
  if [ -z "$1" ] ; then
    echo
    return
  fi
  name=$1
  shift
  value=$*
  printf "%20s: %s\n" "$name" "$value"
}

function parse_cpuinfo () {
  grep "$1" < /proc/cpuinfo | head -1 | cut -d: -f2-
}

function parse_after_colon () {
  echo "$*"|cut -d: -f2-
}

function tryversion () {
  prog="$1"
  if [ "$(command -v "$prog")" ] ; then
     ans=$($prog --version 2>/dev/null)
     if [ -z "$ans" ] ; then
       echo "?"
     else
       echo "$ans"
     fi
  else
     echo "not_in_PATH"
  fi
}

cat <<EOF
The file:    $ofile
can be posted to a forum or a web site like:
     http://pastebin.com
in order to provide information about the linuxcnc
system and configuration.

EOF

[ -n "$VIEWER" ] && echo "VIEWER=$VIEWER"

show "            Date" "$(date)"
show "        UTC Date" "$(date -u)"
show "    this program" "$0"
show "          uptime" "$(uptime)"
show " lsb_release -sa" "$(lsb_release -sa 2>/dev/null)"
show "        linuxcnc" "$(command -v linuxcnc)"
show "             pwd" "$(pwd -P)"
show "            USER" "$USER"
show "         LOGNAME" "$LOGNAME"
show "            HOME" "$HOME"
show "          EDITOR" "$EDITOR"
show "          VISUAL" "$VISUAL"
show "        LANGUAGE" "$LANGUAGE"
show "            TERM" "$TERM"
show "       COLORTERM" "$COLORTERM"
show "         DISPLAY" "$DISPLAY"
show "         DESKTOP" "$DESKTOP_SESSION"
show "    display size" "$(parse_after_colon "$(xdpyinfo|grep dimensions)")"
show "            PATH" "$PATH"
echo
echo "uname items:"
show "     nodename -n" "$(uname -n)"
show "  kernel-name -s" "$(uname -s)"
show "  kernel-vers -v" "$(uname -v)"
show "      machine -m" "$(uname -m)"
show "    processor -p" "$(uname -p)"
show "     platform -i" "$(uname -i)"
show "  oper system -o" "$(uname -o)"
show ""
echo "/proc items:"
show "         cmdline" "$(< /proc/cmdline)"
show "      model name" "$(parse_cpuinfo "model name")"
show "           cores" "$(parse_cpuinfo "cpu cores")"
show "         cpu MHz" "$(parse_cpuinfo "cpu MHz")"
show "         parport" "$(grep parport < /proc/ioports)"
show "          serial" "$(grep serial < /proc/ioports)"
echo
echo "Versions:"
show "             gcc" "$(gcc --version|head -1)"
show "          python" "$(@PYTHON@ --version 2>&1)"
show "             git" "$(tryversion git)"
show "      git commit" "$(git_commit)"
show "             tcl" "$(echo "puts $::tcl_version"|tclsh)"
show "              tk" "$(echo "puts $::tk_version;destroy ."|wish)"
show "           glade" "$(tryversion glade)"
echo
echo "linuxcnc_var all:"
echo
for n in $(linuxcnc_var all) ; do
   show "${n%%=*}" "${n##*=}"
done

# Not everybody runs Debian based distros
echo
if command -v dpkg > /dev/null; then
    echo "dpkg -l '*linuxcnc*':"
    dpkg -l '*linuxcnc*'
else
    echo "No 'dpkg' available, different distro, probably."
fi
echo

[ -n "$VIEWER" ] && $VIEWER "$ofile"
exit 0