#!/bin/sh
# -*- mode: sh; tab-width: 8; coding: utf-8-unix -*-

DBUG() { echo DEBUG $* >&2 ; }
INFO() { echo INFO $* >&2 ; }
WARN() { echo WARN $* >&2 ; }
ERROR() { echo ERROR $* >&2 ; }

prog=`basename $0 .bash`
PREFIX=/usr/local
ROLE=base

[ -z "$PYVER" ] && PYVER=3 # echo ERROR define PYVER >&2 && exit 1
[ -z "$USER" ] && USER=$( id -un )

ini_file=/usr/local/etc/testforge/testforge.bash
if [ ! -f $ini_file ] ; then
    # bootstrap
    [ -d /usr/local/etc/testforge ] || mkdir -p /usr/local/etc/testforge
    [ -x /usr/bin/python$PYVER ] && \
      echo export BASE_PYTHON${PYVER}_MINOR=`/usr/bin/python$PYVER --version|sed -e 's/.* //' -e 's/\.[0-9]*$//'` >> $ini_file
else
    .  $ini_file >/dev/null
fi

set -- -x
P="BASE_PYTHON${PYVER}_MINOR"
PYTHON_MINOR="$(eval echo \$$P)"
[ -n "$PYTHON_MINOR" ] || \
    PYTHON_MINOR=$( python$PYVER --version 2>&1| sed -e 's@^.* @@' -e 's@\.[0-9]*$@@' )

if [ -z "$LIB" -a -d /usr/lib/python$PYTHON_MINOR ] ; then
    LIB=lib
elif [ -z "$LIB" -a -d /usr/lib64/python$PYTHON_MINOR ] ; then
    LIB=lib64
elif [ -n "$LIB" -a ! -d /usr/$LIB/python$PYTHON_MINOR ] ; then
    ERROR LIB=$LIB but no /usr/$LIB/python$PYTHON_MINOR
    exit 1
fi

if [ "$USER" = root ] ; then
    [ -f /usr/$LIB/python$PYTHON_MINOR/sitecustomize.py ] && \
      mv /usr/$LIB/python$PYTHON_MINOR/sitecustomize.py /usr/$LIB/python$PYTHON_MINOR/sitecustomize.py.bak && \
      rm -f /usr/$LIB/python$PYTHON_MINOR/sitecustomize.pyc
fi

if [ ! -d /usr/local/$LIB/python$PYTHON_MINOR/site-packages/ ] ; then
    if [ "$USER" = root ] ; then
	mkdir -p /usr/local/$LIB/python$PYTHON_MINOR/site-packages/
	chgrp adm /usr/local/$LIB/python$PYTHON_MINOR/site-packages/
	chmod 775 /usr/local/$LIB/python$PYTHON_MINOR/site-packages/
    else
	ERROR Install error missing /usr/local/$LIB/python$PYTHON_MINOR/site-packages/
        exit 2
    fi
fi

[ -d /usr/local/$LIB/python$PYTHON_MINOR/site-packages/ ] || \
  mkdir -p  /usr/local/$LIB/python$PYTHON_MINOR/site-packages/
[ -f /usr/local/$LIB/python$PYTHON_MINOR/site-packages/sitecustomize.py ] || \
    cat >  /usr/local/$LIB/python$PYTHON_MINOR/site-packages/sitecustomize.py << EOF
# -*- mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*-

from __future__ import print_function

import codecs
codecs._codecs_lookup = codecs.lookup
def lookup(s):
      if s.endswith('-unix'):
          s = s[:-5]
      elif s.endswith('-dos'):
          s = s[:-4]
      return codecs._codecs_lookup(s)
codecs.lookup = lookup

import os,sys
pyver = sys.version[:3]
notver = "3" if sys.version[:1] == '2' else '2'

for elt in sys.path:
    if elt.find('python' + notver) < 0: continue
    p = os.environ.get('PYTHONPATH', '')
    sys.stderr.write('WARN: sitecustomize.py PYTHONPATH=' +p +' sys.path=' +repr(sys.path) +'\n')
    sys.stderr.write('"python' + notver +' in sys.path for ' +sys.executable +"\n")
    raise RuntimeError('"python' + notver +' in sys.path for ' +sys.executable)

dir=None
for elt in ['var', 'usr']:
    if 'LD_LIBRARY_PATH' not in os.environ or 'PYTHONPATH' not in os.environ:
        continue
    dir = '/' + elt + '/local/bin'
    if dir not in os.environ['PATH'].split(os.pathsep):
        continue
    dir = '/' + elt + "/local/$LIB"
    if dir not in os.environ['LD_LIBRARY_PATH'].split(os.pathsep):
        continue
    dir = '/' + elt + "/local/$LIB/python" + pyver + '/site-packages'
    # the bash wrapper will have put this on
    if dir in os.environ['PYTHONPATH'].split(os.pathsep):
        # print(repr(sys.path))
        if dir not in sys.path:
            sys.path.insert(0, dir)
        bin = '/' + elt + '/local/bin/python'  + pyver[0]
        if elt == 'var':
            bin += '.bash'
        else:
            bin += '.sh'
        if os.path.isfile(bin):
            # print(sys.executable + '=' + bin)
            sys.executable = bin
            # var takes precedence
            break

if __name__ == '__main__':
    print(sys.executable)
del os, sys, dir, elt, pyver
EOF