#!/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
    echo $(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 () {
  cat /proc/cpuinfo|grep "$1"|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" $(cat /proc/ioports|grep parport)
show "          serial" $(cat /proc/ioports|grep serial)
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

echo
echo "dpkg -l '*linuxcnc*':"
dpkg -l '*linuxcnc*'
echo

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