#!/bin/bash

source "$(dirname "$BASH_SOURCE")/.validate"

#Ignoring files from vendor/, builder/parser/testfiles*, docs/theme/mkdocs/tipuesearch*, ending with .md and .go
ignoreFiles='^builder/parser/testfiles*|^docs/theme/mkdocs/tipuesearch*|^vendor/|\.md$|\.go$'

IFS=$'\n'
files=( $(validate_diff --diff-filter=ACMR --name-only | grep -v "$ignoreFiles" || true) )
unset IFS

badFiles=()
for f in "${files[@]}"; do
    if [ "$(git show "$VALIDATE_HEAD:$f" | grep '[[:space:]]$')" ]; then
        badFiles+=( "$f" )
    fi
done

if [ ${#badFiles[@]} -eq 0 ]; then
	echo 'Congratulations!  All text files are properly formatted.'
else
	{
		echo "These files have trailing whitespaces:"
		for f in "${badFiles[@]}"; do
			echo " - $f"
		done
		echo
		echo 'Please reformat the above files using, for example:'
		echo '"ex -sc "'"%s/[[:space:]]*$//g|x"'" file" and commit the result.'
		echo
	} >&2
	false
fi