#!/usr/bin/env bash

script_name=$( basename "$0" )

script_version="0.0.2"

usage1="Please enter a single valid 32-character uuid number or option."

usage2="Usage: ${script_name} [-v|--version|-h|--help|UUID]"

uuid=""

# Parse the command line parameters

if [[ $# -ne 1 ]]

then

echo "${usage1}"

echo "${usage2}"

exit 0

else

param="$1"

case "${param}" in

-v|--version)

echo "${script_name}" version "${script_version}"

exit 0

;;

-h|--help)

show_help=1

shift

;;

*)

if [[ ${#param} -eq 32 ]]

then

uuid="${param}"

else

echo "${script_name}": unknown option "${param}"

echo "${usage2}"

exit 1

fi

;;

esac

fi

# Show the help screen

if [[ ${show_help} -eq 1 ]]

then

echo "${usage}"

echo "Given a valid UUID code, this script will attempt to download that"

echo "student submission, switch to that directory, uncomment all tests"

echo "from the spec file, create a symlink to a node_modules folder, and"

echo "run the units tests on that file."

echo

echo "Options:"

echo " -h, --help display this help and exit"

echo " -v, --version display the version number and exit"

exit 0

fi

# This if block may not strictly be necessary(?)

if [[ ! "${#uuid}" -eq 32 ]]

then

echo "${usage}"

echo "Please enter a valid 32-character uuid number."

exit 1

fi

# Try to download the file and report any errors.

# Currently this does not catch all the output from

# the Exercism program as it is supposed to.

download_dir="$( exercism download --uuid=${uuid} )"

download_status=$?

if [[ ${download_status} -eq 255 ]]

then

echo "Solution not found"

exit 1

elif [[ ${download_status} -ne 0 ]]

then

echo "Download attempted aborted with error code ${download_status}"

exit 1

fi

# If we got this far, we now need to:

# - move to the correct folder

# - unlock all tests from the .spec.js file

# - create link to a node_modules folder in root users/ folder

# - runs the tests with a locally-installed instance of Jest.

# For this to work, the script makes a lot of assumptions about the users

# set-up that it does not currently verify.

cd "${download_dir}"

test_file=$( basename "${download_dir}" ).spec.js

sed -i -e 's/xtest/test/g' "${test_file}"

ln -s ../../../node_modules/

./node_modules/.bin/jest "${test_file}"