#!/bin/sh

CODA_RELEASE=8
COPYRIGHT_YEAR=$(date +'%Y')

check_release=true
check_year=true
[ "$1" = "--release" ] && check_year=false
[ "$1" = "--year" ] && check_release=false

exit_code=0
for single_file in "$@"
do
    # only check files staged for commit
    if git diff --cached --quiet -- "$single_file" ; then continue ; fi

    # is there a license blurb?
    if test -f "$single_file" && head -1 "$single_file" | grep -q gpl ; then
        # is the release current
        if $check_release ; then if ! head -10 "$single_file" | grep -q "Release $CODA_RELEASE" ; then
            echo "$single_file: Update Coda release to $CODA_RELEASE"
            exit_code=1
        fi ; fi
        # is the year current
        if $check_year ; then if ! head -10 "$single_file" | grep -q "$COPYRIGHT_YEAR" ; then
            echo "$single_file: Update copyright year to $COPYRIGHT_YEAR"
            exit_code=1
        fi ; fi
    fi
done
exit $exit_code
