#! /usr/bin/env bash
set -euxo pipefail

RESULT_PATH=$1
EXPECTED_VERSION=$2
LOG_FILE=~/.nix-update/check-result-log.tmp

rm -f $LOG_FILE

function check_binary_help()
{
    if timeout -k 2 1 $1 $2 2>/dev/null 1>/dev/null
    then
        echo "- ran \`$1 $2\` got 0 exit code" >> $LOG_FILE
    fi
}

function check_version_type()
{
    if timeout -k 2 1 $1 $2 2>&1 | grep $EXPECTED_VERSION >/dev/null
    then
        echo "- ran \`$1 $2\` and found version $EXPECTED_VERSION" >> $LOG_FILE
    fi
}

function check_binary() {

    check_binary_help "$1" "-h"
    check_binary_help "$1" "--help"
    check_binary_help "$1" "help"

    check_version_type "$1" "-V"
    check_version_type "$1" "-v"
    check_version_type "$1" "--version"
    check_version_type "$1" "version"
    check_version_type "$1" "-h"
    check_version_type "$1" "--help"
    check_version_type "$1" "help"

}

BINARIES=$(find $RESULT_PATH/bin -type f || true)

for b in $BINARIES
do
    check_binary $b
done

if [ -s $LOG_FILE ]
then
    true
else
    echo "- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)" >> $LOG_FILE
fi

if grep -r "$EXPECTED_VERSION" $RESULT_PATH >/dev/null
then
    echo "- found $EXPECTED_VERSION with grep in $RESULT_PATH" >> $LOG_FILE
fi

if find $RESULT_PATH | grep -r "$EXPECTED_VERSION" >/dev/null
then
    echo "- found $EXPECTED_VERSION in filename of file in $RESULT_PATH" >> $LOG_FILE
fi

cat $LOG_FILE || true