#!/bin/tcsh

# ----------------------------------------------------------------------
# upgrade the AFNI binaries
#
# Update the package specified by "afni -ver" in the directory
# specified by "which afni".  Allow for overriding options of:
#
#       -package PACKAGE            
#       -bindir  DIRECTORY
#
# terminate on any error, and be clear about which command failed

# ----------------------------------------------------------------------
# apply any options

# initialize options to 'unset'
set abin = ""
set package = ""
set tmp_dir = ".tmp.install"    # should start with '.'
set make_backup = 1             # backup previous binaires

if ( $#argv == 0 ) then
    set help = 1
else
    set help = 0
endif

set testing = 0
set use_curl = 0

set ac = 1
while ( $ac <= $#argv )
    if ( "$argv[$ac]" == "-bindir" ) then
        @ ac ++
        if ( $ac > $#argv ) then
            echo "** missing parameter for option '-bindir'"
            exit 1
        endif
        set abin = $argv[$ac]
    else if ( "$argv[$ac]" == "-curl" ) then
        set use_curl = 1
    else if ( "$argv[$ac]" == "-test" ) then
        set testing = 1
    else if ( "$argv[$ac]" == "-package" ) then
        @ ac ++
        if ( $ac > $#argv ) then
            echo "** missing parameter for option '-package'"
            exit 1
        endif
        set package = $argv[$ac]
    else if ( "$argv[$ac]" == "-help" ) then
        set help = 1
    else if ( "$argv[$ac]" == "-d" || "$argv[$ac]" == "-defaults" ) then
        set defaults = 1
    else
        echo "** unknown option $argv[$ac]"
        exit 1
    endif
    @ ac ++
end

# if requested, show help and exit
if ( $help ) then
    set prog = `basename $0`
    echo "------------------------------------------------------------"
    echo "$prog   - upgrade AFNI binaries"
    echo ""
    echo "Update the AFNI binaries, either via '-defaults' or by the"
    echo "'-bindir' and/or '-package' options."
    echo ""
    echo "examples:"
    echo ""
    echo "    $prog -defaults"
    echo "    $prog -package linux_xorg7"
    echo "    $prog -package linux_xorg7 -bindir ~/abin"
    echo ""
    echo "options:"
    echo ""
    echo "    -help                 : show this help"
    echo ""
    echo "    -bindir ABIN          : set AFNI binary directory to ABIN"
    echo "    -curl                 : default to curl instead of wget"
    echo "    -defaults             : install current package into abin"
    echo "    -d                    : (short for -defaults)"
    echo ""
    echo "        This would be the method to 'update the package that I"
    echo "        am currently using'."
    echo ""
    echo "        The package would be decided by 'afni -ver' and the"
    echo "        directory would come from 'which afni'.  If either of"
    echo "        these is not appropriate, please specify them as below."
    echo ""
    echo "    -package PACKAGE      : install distribution package PACKAGE"
    echo "    -test                  : just attempt the download and quit"
    echo ""
    echo "Note that the user must have write permissions in the ABIN"
    echo "directory."
    echo ""
    exit
endif

# possibly apply default binary directory
if ( $abin == "" ) then
    set abin = `which afni`
    if ( $status ) then
        echo "** failed 'which afni'"
        exit 1
    endif

    # and nuke the trailing 'afni'
    set abin = $abin:h
endif

# possibly apply default package
if ( $package == "" ) then
   set package = `afni -ver | grep binary | awk '{print $3}' | sed 's/://g'`
   if ( $status ) then
       echo "** failed setting package from 'afni -ver'"
       exit 1
   endif
endif

# test for existence of wget or curl
which wget >& /dev/null
set missing_wget = $status
which curl >& /dev/null
set missing_curl = $status
if ( $testing ) echo "-- wget, curl status = $missing_wget, $missing_curl"

if ( $missing_wget && $missing_curl ) then
    echo ""
    echo "** programs wget and curl are missing, please install *either*,"
    echo "   or look it up on the AFNI message board:"
    echo "       http://afni.nimh.nih.gov/afni/community/board"
    echo ""
    exit 1
endif

# default to wget, else use curl
set get_prog = ( "wget" )
if ( $use_curl || $missing_wget ) set get_prog = ( "curl" "-O" )

# make sure package is set to the base name
if ( $package =~ *.tgz ) set package = $package:r

echo "-- attempting to install package $package under"
echo "   install dir: $abin..."

# note appropriate backup directory
set date = `date +%Y_%m_%d`
set backup_dir = auto_backup.$package

# ----------------------------------------------------------------------
# go to the binary directory and begin work (most work from temp dir)
cd $abin

# check permissions before doing anything
if ( ! -w . ) then
    echo "** you do not have write permissions in the install directory"
    echo "   (install dir = `pwd`)"
    exit 1
endif

# remove any old package
if ( -f $package.tgz || -d $package ) then
    echo nuking old package...
    \rm -fr $package $package.tgz
    if ( $status ) then
        echo "** failed to remove old package $package"
        exit 1
    endif
endif

# remove any temp install directory
if ( -d $tmp_dir ) then
    echo nuking old temporary directory...
    \rm -fr $tmp_dir
endif

# ----------------------------------------------------------------------
# create and enter temporary working directory; test whether update is needed
mkdir $tmp_dir
if ( $status ) then
    echo "** failed to create new or remove old temp dir, $tmp_dir"
    exit 1
endif
cd $tmp_dir

# just download single afni binary and compare
set get_package = http://afni.nimh.nih.gov/pub/dist/bin/$package/afni
echo "++ downloading test file $package/afni ..."
$get_prog $get_package
cmp -s afni ../afni
if ( ! $status ) then
    echo "++ no update needed"
    cd ..
    \rm -fr $tmp_dir
    exit
endif

# if just testing, we are done
if ( $testing ) then
    echo "++ install needed, but just testing download via '$get_prog', done"
    echo "(temp download in `pwd`)"
    exit
endif

echo ""
echo "++ update needed, installing..."
echo ""
sleep 1

# ----------------------------------------------------------------------
# an update is needed, download full package

# download the full binary set
echo "++ downloading full $package.tgz package..."
set get_package = http://afni.nimh.nih.gov/pub/dist/tgz/$package.tgz
$get_prog $get_package
if ( $status ) then
    echo "** failed to download package $get_package"
    exit 1
endif

echo "++ extracting package $package..."
tar xfz $package.tgz
if ( $status ) then
    echo "** failed to extract package $package.tgz"
    exit 1
endif

# ----------------------------------------------------------------------
# delete any previous auto-backup and install the new binaries

# if not making a backup dir, use rsync for install
# (since there might be new and unknown directories)
set use_rsync = 1

# if the directory is empty, no rsync or backup
set nfiles = `\ls .. | wc -l`

# make a backup directory (first under 'hidden' temp dir)
if ( $nfiles == 0 ) then
    set use_rsync = 0   # now do not need rsync
    echo "-- nothing to back up or sync"
else if ( $make_backup ) then
    # nuke previous auto-backup directory
    if ( -d ../$backup_dir ) then
        echo nuking old backup directory, $backup_dir ...
        \rm -fr ../$backup_dir
    endif

    # create new auto-backup directory
    mkdir $backup_dir
    if ( $status ) then
        echo "** failed to make backup directory $backup_dir, exiting..."
        exit 1
    endif
    echo "++ backing up current binaries to $backup_dir"
    \mv ../* $backup_dir
    \mv $backup_dir ..

    set use_rsync = 0   # now do not need rsync
endif

# abin may have sub-directories         17 Oct 2011 [rickr]

if ( $use_rsync ) then
   echo "++ synching new binaries..."
   rsync -a $package/ ../
   if ( $status ) then
       echo "** failed to overwrite existing package, exiting..."
       exit
   endif
else
   echo "++ installing new binaries..."
   \mv $package/* ..
   if ( $status ) then
       echo "** failed to overwrite existing package, exiting..."
       exit
   endif
endif

# and nuke any leftovers
cd ..
\rm -fr $tmp_dir

echo "done, yay (binaries are under $abin)"