#!/usr/bin/env bash

set -e
set -u

# This script compares the table of supported tools in both supported-tools.md
# (for GitHub) and doc/ale-supported-languages-and-tools.txt (for vim), so we
# can complain if they don't match up.

doc_file="$(mktemp -t doc.XXXXXXXX)"
doc_sorted_file="$(mktemp -t doc-sorted.XXXXXXXX)"
readme_file="$(mktemp -t readme.XXXXXXXX)"

while read -r; do
    if [[ "$REPLY" =~ ^! ]]; then
        language="${REPLY/!/}"
    else
        echo "$language - $REPLY"
    fi
done < <(
    grep '^\*\|^  *\*' doc/ale-supported-languages-and-tools.txt \
    | sed -e '1,2d' \
    | sed 's/^\* */!/' \
    | sed -E 's/^ *\* *|!!|\^|\(.*\)|`//g' \
    | sed 's/ *$//'
) > "$doc_file"

while read -r; do
    if [[ "$REPLY" =~ ^! ]]; then
        language="${REPLY/!/}"
    else
        echo "$language - $REPLY"
    fi
done < <(
    grep '^\*\|^  *\*' supported-tools.md \
    | sed 's/^\* */!/' \
    | sed -E 's/^ *\* *|:floppy_disk:|:warning:|\(.*\)|\[|\].*|-n flag//g' \
    | sed 's/ *$//'
) > "$readme_file"

exit_code=0

# Sort the tools ignoring case, and complain when things are out of order.
LC_ALL=en_US.UTF-8 sort -f -k1,2 "$doc_file" -o "$doc_sorted_file"

diff -U0 "$doc_sorted_file" "$doc_file" || exit_code=$?

if ((exit_code)); then
    echo
    echo "The supported tools list isn't sorted properly"
    echo
fi

diff -U0 "$readme_file" "$doc_file" || exit_code=$?

rm "$doc_file"
rm "$doc_sorted_file"
rm "$readme_file"

exit "$exit_code"