#!/bin/bash

if [ -z $1 ]; then
  echo "No exercise slug provided"
  exit 1
fi

tolower() {
  local result=$(echo $1 | tr '[:upper:]' '[:lower:]')
  echo "$result"
}

exercise=$(tolower $1)

if [ -n "$(find exercises -name $exercise -type d -maxdepth 1)" ]; then
  echo "Exercise '$exercise' already exists"
  exit 1
fi

if [ -z "$(find bin -name configlet -type f)" ]; then
  bin/fetch-configlet
fi

if [ -z "$(find .. -name "problem-specifications" -type d -maxdepth 1)" ]; then
  git clone https://github.com/exercism/problem-specifications.git \
    ../problem-specifications
fi

mkdir -p exercises/$exercise/tests

bin/configlet generate . --only $exercise

cp -r template/* exercises/$exercise

echo "Done"
echo "---"
echo "Navigate to 'exercises/$exercise' to start working on '$exercise'"
echo "See the 'Generating Setup' part of contributing to figure out the next steps"