#!/bin/bash
# footled lots to make this work with python 3.10 & 3.11 and WSL1 and WSL2 on Ubuntu 22.04
# Run this in a terminal in the troggle directory: 'bash venv-trog.sh'
echo '-- Run this in a terminal in the real troggle directory: "bash venv-trog.sh"'

# Expects an Ubuntu 22.04 relatively clean install.
# If you have not already installed these on your clean Ubuntu install DO THIS FIRST
# use the script os-trog.sh

# If you are using Debian, then stick with the default version of python
# If you are using Ubuntu, then it is easy to use a later version of python, e.g. 3.11


# NOW we set up troggle
PYTHON=python3.11
VENAME=p11d3 # python3.x and django 3.2
echo "** You are logged in as `id -u -n`"
echo "The 50MB pip cache will be in /home/`id -u -n`/.cache/"
echo "The 150MB venv will created in  /home/`id -u -n`/$VENAME/"
TROGDIR=$(cd $(dirname $0) && pwd)
echo "-- Troggle folder (this script location): ${TROGDIR}"

if [ -d requirements.txt ]; then
  echo "-- No requirements.txt found. Copy it from your most recent installation."
  exit 1
fi
echo ## Using requirements.txt :
cat requirements.txt
echo ##


$PYTHON --version

# NOTE that when using a later or earlier verison of python, you MUST also
# use the allowed version of Pillow, see https://pillow.readthedocs.io/en/latest/installation.html

# NOW set up link from expo user folder
# needed for WSL2
echo Creating links from Linux filesystem user 
# These links only need making once, for many venv
cd ~

if [ ! -d $VENAME ]; then
  echo "## Creating venv $VENAME. (If this fails with a pip error, you need to ensure you have python3.11-venv installed and/or use a Ubuntu window)"
  $PYTHON -m venv $VENAME
else 
  echo "## /$VENAME/ already exists ! Delete it first."
  exit 1
fi

  # Activate the virtual env and see what the default packages are
echo "### Activating $VENAME"

cd $VENAME
echo "-- now in: ${PWD}"
source bin/activate
echo "### Activated."
  # update local version of pip, more recent than OS version
  # debian bullseye installs pip 20.3.4 which barfs, we want >22.0.3
  
  # update local version of setuptools, more recent than OS version, needed for packages without wheels
  
echo "### installing later version of pip inside $VENAME"
$PYTHON -m pip install --upgrade pip
$PYTHON -m pip install --upgrade setuptools

PIP=pip

$PIP list > original-pip.list
$PIP freeze >original.txt

# we are in  /home/$USER/$VENAME/
ln -s ${TROGDIR} troggle
ln -s ${TROGDIR}/../expoweb expoweb
ln -s ${TROGDIR}/../loser loser
ln -s ${TROGDIR}/../drawings drawings

# fudge for philip's machine
if [  -d ${TROGDIR}/../expofiles ]; then
  ln -s ${TROGDIR}/../expofiles expofiles
else
  if [ ! -d /mnt/f/expofiles ]; then
    sudo mkdir /mnt/f
    sudo mount -t drvfs F: /mnt/f
  else
    ln -s /mnt/f/expofiles expofiles
  fi
fi

echo "### Setting file permissions.. may take a while.."
git config --global --add safe.directory '*'
sudo chmod -r 0777 *

echo "### links to expoweb, troggle etc. complete:"
ls -tla
echo "###"
echo "### now installing ${TROGDIR}/requirements.txt"
echo "###"

# NOW THERE IS A PERMISSIONS FAILURE THAT DIDN'T HAPPEN BEFORE
# seen on wsl2 as well as wsl1 
# which ALSO ruins EXISTING permissions !
# Guessing it is to do with pip not liking non-standard py 3.11 installation on Ubuntu 22.04

$PIP install -r ${TROGDIR}/requirements.txt
echo '### install from requirements.txt completed.'
echo '### '

$PIP freeze > requirements.txt  
# so that we can track requirements more easily with git
# because we do not install these with pip, but they are listed by the freeze command
# Now find out what we actually installed by subtracting the stuff venv installed anyway
sort original.txt > 1
sort requirements.txt >2
comm -3 1 2 --check-order | awk '{ print $1}'>fresh-requirements.txt
rm 1
rm 2

cp requirements.txt requirements-$VENAME.txt 
cp requirements-$VENAME.txt troggle/requirements-$VENAME.txt

$PIP list > installed-pip.list
$PIP list -o > installed-pip-o.list

REQ=installation-record
mkdir $REQ 
mv requirements-$VENAME.txt $REQ
mv original.txt $REQ
mv requirements.txt $REQ
mv original-pip.list $REQ
mv installed-pip.list $REQ
mv installed-pip-o.list $REQ
cp fresh-requirements.txt ../requirements.txt
mv fresh-requirements.txt $REQ
cp troggle/`basename "$0"` $REQ


$PYTHON --version
python --version
echo "Django version:`django-admin --version`"

echo "### Now do 
  '[sudo service mysql start]'
  '[sudo service mariadb restart]'
  '[sudo mysql_secure_installation]'
  'cd ~/$VENAME'
  'source bin/activate'
  'cd troggle'
  'django-admin'
  'python manage.py check'
## this tests if you have set up ssh correcting. Refer to documentation https://expo.survex.com/handbook/computing/keyexchange.html
## you need to follow the Linux instructions.
  'ssh expo@expo.survex.com'

## the next tests will fail unless ~/expofiles is set correctly to a folder on your machine
## the tests may ALSO fail because of ssh and permissions errors 
# Ran 85 tests in 83.492s
# FAILED (failures=5)
## So you will need to run 
$sudo chown -Rhv philip:philip ~/$VENAME  (if your username is philip)
# and then REBOOT (or at least, exit WSL and terminate and restart WSL)
# because this chmod only takes effect then.

   'python manage.py test -v 2'
   './pre-run.sh' (runs the tests again)
   
   'python databaseReset.py reset $VENAME'
   'python manage.py runserver 0.0.0.0:8000 (and allow access when the firewall window pops up)'
   "
if [ ! -d /mnt/f/expofiles ]; then
echo '### No valid expofiles directory. Fix this before any tests will work.
fi