setup_environment.sh

#!/bin/bash
source ~/.bashrc
# Verify Conda installation: (https://conda.io/docs/user-guide/install/index.html)
# return 1 if global command line program installed, else 0
# example
# echo "node: $(program_is_installed node)"
mac=0
if [[ "$OSTYPE" =~ ^darwin ]]; then
    echo "You use MacOS."
    mac=1
fi

function program_is_installed {
  # set to 1 initially
  local return_=1
  # set to 0 if not found
  type $1 >/dev/null 2>&1 || { local return_=0; }
  # return value
  echo "$return_"
}


if [ $(program_is_installed conda) == 1 ]; then
  echo "conda installed"
  echo 'source ~/.bash_functions' >> ~/.bashrc
else
  echo "installing conda"
  if [ $mac -eq 1 ]
  then
    curl https://repo.continuum.io/miniconda/Miniconda2-latest-MacOSX-x86_64.sh -output Miniconda2-latest-MacOSX-x86_64.sh
    chmod +x Miniconda2-latest-MacOSX-x86_64.sh
    ./Miniconda2-latest-MacOSX-x86_64.sh
  else
      wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh
      chmod +x Miniconda3-latest-Linux-x86_64.sh
      ./Miniconda3-latest-Linux-x86_64.sh
  fi

  tail -n 1 ~/.bashrc >> ~/.bash_functions
  head -n -2 ~/.bashrc
  echo 'source ~/.bash_functions' >> ~/.bashrc
  source ~/.bash_functions
fi

# Create an environment
if [ $mac -eq 1 ]
then
    conda env create -f environment_mac.yml
else
    conda env create -f environment.yml
fi

# Set up PYTHONPATH
touch ~/.bash_functions
echo 'export PYTHONPATH=$PWD:$PYTHONPATH' >> ~/.bash_functions

# Congratulate user on success
echo "You're the best! Everything worked!"