#!/usr/bin/env bash


STAGED_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep '\.jsx\?$')
BIN_PATH="$(git rev-parse --show-toplevel)/node_modules/.bin"

eslint() {
  ESLINT="$BIN_PATH/eslint"

  # Check for eslint
  if [[ ! -x "$ESLINT" ]]; then
    printf "\t\033[41mPlease install ESLint\033[0m\n"
    exit 1
  fi

  echo "Linting modified files"

  echo $STAGED_FILES | xargs $ESLINT

  if [[ $? == 0 ]]; then
    printf "\n\033[1;32mLint Passed\033[0m\n"
  else
    printf "\n\033[41mLint Failed:\033[0m Fix lint errors and try again!\n"
    exit 1
  fi
}

jest() {
  JEST="$BIN_PATH/jest"

  # Check for jest
  if [[ ! -x "$JEST" ]]; then
    printf "\t\033[41mPlease install Jest\033[0m\n"
    exit 1
  fi

  echo "Testing related to modified files"

  $JEST --bail --findRelatedTests $STAGED_FILES

  if [[ $? == 0 ]]; then
    printf "\n\033[1;32mTest Passed\033[0m\n"
  else
    printf "\n\033[41mTest Failed:\033[0m Fix test errors and try again!\n"
    exit 1
  fi
}

# Exit if no files modified
if [[ "$STAGED_FILES" = "" ]]; then
  exit 0
fi

eslint
jest

exit $?