setup

#!/bin/bash

# Function for downloading files from the classes server
function download_files {
  # Clean up any old files that may be present
  if [ ! -d ./CS4351 ]; then rm -rf ./CS4351; fi
  
  # Use scp to download the files
  scp -r ${LSUUSERNAME}@${LSUSERVER}:/classes/cs4351/cs4351_bau/pub/ ./CS4351/
}

# Function with a decision contruct for downloading files from the classes server
function download_files_if_needed {
  # Loop until the input is valid
  local valid_input=0
  while [ $valid_input -eq 0 ]; do
    read should_download
    if [ "$should_download" = "Y" ]; then
      echo "Okay, re-downloading the CS4351 directory."
      download_files
      valid_input=1
    elif [ "$should_download" = "n" ]; then
      echo "Okay, the CS4351 directory will not be re-downloaded."
      valid_input=2
    else
      echo "Please provide a valid input."
      echo -n "Would you like to re-download the CS4351 directory from the LSU classes server? [Y/n] "
    fi
  done
}

# Create the environment file
if [ ! -f ./.env ]; then
  cp ./example.env ./.env
  echo "An environment file was created at \".env\"."
  echo "The environment will need to be configured."
  vim ./.env
else
  echo "Already using an environment file at \".env\"."
fi

# Load the new environment file
source .env

# If the files from CS4351 haven't been copied from the server yet, do that
if [ ! -d ./CS4351 ]; then
  echo "No CS4351 directory was detected. One will be downloaded";
  download_files
else
  # Just because the directory is here does not mean it is up to date.
  # Provide the option of redownloading the directory.
  echo -n "A CSC4351 directory is present, but it may be out of date. Would you like to re-download the files from LSU's classes server? [Y/n] "
  download_files_if_needed
fi

echo "Done!"