setup.sh

# This sets default values for the versions of the Python
# libraries we are installing. If we wish to override this
# (say, during VM or container setup), we do so by
# exporting these variables into the shell environment before
# sourcing this script. If these variables exist before this
# script is sourced, then the pre-existing values will be used.
FLASK_VERSION="${FLASK_VERSION:-0.12.1}"
WERKZEUG_VERSION="${WERKZEUG_VERSION:-0.16.0}"
WTFORMS_VERSION="${WTFORMS_VERSION:-2.1}"
FLASK_SESSION_VERSION="${FLASK_SESSION_VERSION:-0.2.3}"
FLASK_ADMIN_VERSION="${FLASK_ADMIN_VERSION:-1.4.0}"
PEEWEE_VERSION="${PEEWEE_VERSION:-2.9.2}"
WTF_PEEWEE_VERSION="${WTF_PEEWEE_VERSION:-0.2.6}"
PYYAML_VERSION="${PYYAML_VERSION:-3.11}"
CONFIGURE_VERSION="${CONFIGURE_VERSION:-0.5}"
PYTEST_VERSION="${PYTEST_VERSION:-3.0.5}"
OPENPYXL_VERSION="${OPENPYXL_VERSION:-2.4.5}"
UNIDECODE_VERSION="${UNIDECODE_VERSION:-0.4.20}"

# Check for virtualenv
command -v virtualenv >/dev/null 2>&1 || {
  echo >&2 "I require 'virtualenv' but it's not installed.  Aborting.";
  exit 1;
 }

 # Check for pip
command -v pip >/dev/null 2>&1 || {
 echo >&2 "I require 'pip' but it's not installed.  Aborting.";
 exit 1;
}


# If there is a virtual environment, destroy it.
if [ -d venv ]; then
  echo "Deactivating and removing old virtualenv"
  deactivate 2>&1 /dev/null
  rm -rf venv
fi

# Check for correct python version
VERSION=`python2 -V | awk '{print $2}'`
if [ "${VERSION:0:1}" -ne "2" ] || [ "${VERSION:2:1}" -ne "7" ]; then
	     echo "You must use Python 2.7. You are using $VERSION"
	     return 1
else
	echo -e "You are using Python $VERSION"
fi

# Create and activate a clean virtual environment.
virtualenv --python=python2.7 venv
. venv/bin/activate

# Create a data directory
# We will want this if it is a new project.
mkdir -p data

# Upgrade pip before continuing; avoids warnings.
# This should not affect application behavior.
pip install --upgrade pip

# Install specific versions of libraries to avoid
# different behaviors of applications over time.
pip install "werkzeug==$WERKZEUG_VERSION"

pip install "flask==$FLASK_VERSION" #0.12.1
# http://flask.pocoo.org/

pip install "wtforms==$WTFORMS_VERSION" #2.1
# https://wtforms.readthedocs.io/en/latest/

pip install "flask-session==$FLASK_SESSION_VERSION" #0.2.3
# http://pythonhosted.org/Flask-Session/

pip install "flask-admin==$FLASK_ADMIN_VERSION" #1.4.0
# https://flask-admin.readthedocs.io/en/latest/

pip install "peewee==$PEEWEE_VERSION" # 2.9.2
# http://docs.peewee-orm.com/en/latest/

pip install "wtf-peewee==$WTF_PEEWEE_VERSION" #0.2.6
# https://github.com/coleifer/wtf-peewee

pip install "configure==$CONFIGURE_VERSION" #0.5
# http://configure.readthedocs.io/en/latest/#

pip install "pytest==$PYTEST_VERSION" #3.0.5
# http://docs.pytest.org/en/latest/

pip install "openpyxl==$OPENPYXL_VERSION" #2.4.5
# https://github.com/jmcnamara/XlsxWriter

pip install "unidecode==$UNIDECODE_VERSION" #0.4.20
# https://pypi.python.org/pypi/Unidecode

export FLASK_APP=run.py
export FLASK_ENV=development
export FLASK_RUN_PORT=8080
export FLASK_RUN_HOST=0.0.0.0   # To allow external routing to the application for development