#!/bin/sh

cd "$GITHUB_WORKSPACE" || exit 1

err=0

find . '(' -name   '*.bash' \
        -o -path '*/.bash*'     -o -path '*/bash*' \
        \
        -o -name   '*.ksh' \
        -o -name   'ksh*'  \
        -o -path '*/.ksh*'      -o -path '*/ksh*'  \
        -o -name   'suid_profile' \
        \
        -o -name   '*.zsh' \
        -o -name   '.zlogin*'   -o -name   'zlogin*'   \
        -o -name   '.zlogout*'  -o -name   'zlogout*'  \
        -o -name   '.zprofile*' -o -name   'zprofile*' \
        -o -path '*/.zsh*'      -o -path '*/zsh*'      \
        \
        -o -name   '*.sh' \
        -o -path '*/.profile*'  -o -path '*/profile*' \
        -o -path '*/.shlib*'    -o -path '*/shlib*'   \
       ')' -exec shellcheck {} + || err=1

# shellcheck disable=SC2016
find . -type f ! -name '*.*' -perm /111 -exec sh -c '
        for f
        do
            head -n1 "$f" | grep -Eqs "^#! */[^ ]*/[abkz]*sh" || continue
            shellcheck "$f" || err=$?
        done
        exit $err
        ' _ {} + || err=1

if  find . -path '*bin/*/*' -type f -perm /111 -print |
    grep .
then
    echo >&2 "WARNING: subdirectories of bin directories are not usable via PATH"
fi

if  find . -path '*bin/*' -name '*.*' -type f -perm /111 -perm /444 -print |
    grep .
then
    echo >&2 "WARNING: programs in PATH should not have a filename suffix"
fi

exit "$err"