setup_env.sh

#!/usr/bin/env bash

#
# A simple script to setup the development env.
#

ENV_NAME="env"
DEPS_FILE="requirements.txt"

if [[ $# -eq 1 ]]; then
  if [[ $1 -eq "update_deps_file" ]]; then
    if [[ ! $(cat $DEPS_FILE) == $(pip freeze) ]]; then
      rm $DEPS_FILE
      pip freeze > $DEPS_FILE
    else
      echo "No new dependencies to add to $DEPS_FILE..."
      exit 1
    fi
  fi
else
  if [[ ! -d "$ENV_NAME" ]]; then
    virtualenv -p python3 $ENV_NAME > /dev/null
    . $ENV_NAME/bin/activate
    pip install --upgrade pip > /dev/null
    pip install -r requirements.txt

    if ! grep -Fqx "$ENV_NAME/" .gitignore
    then
       echo "$ENV_NAME/" >> .gitignore
    fi

    echo
    echo "Enviroment setup sucessful!"
    exit $?
  else
    echo "Development environment already exists..."
    exit 1
  fi
fi