quiz.rq

PREFIX : <http://www.semanticweb.org/eliott/ontologies/2024/4/macao/>
PREFIX mt: <http://www.semanticweb.org/eliott/ontologies/2024/4/macao/template/>
PREFIX st: <http://ns.inria.fr/sparql-template/>

template mt:quiz(?quiz) {
    st:nl()
    mt:start_marker(?quiz) "/quiz.json" st:nl()
    '{'
    box {
        '"elements": ['
        box {
            "{"
            box {
                st:call-template(mt:qcu, ?quiz)
                st:call-template(mt:qcm, ?quiz)
                #st:call-template(mt:json_in_ttl, ?quiz)
            }
            "}"
        }
        ']'
    }
    # Optional correct/incorrect comments for the quiz.
    # Unfortunately, STTL doesn't have a concise syntax for blocks
    # that depend on a variable being bound, we have to use
    # SPARQL functions and st:format
    coalesce(st:format(
        '%s"correctComment": "%s"',
        mt:sep(),
        mt:json_escape(?correct_comment)
    ), "")
    coalesce(st:format(
        '%s"incorrectComment": "%s"',
        mt:sep(),
        mt:json_escape(?incorrect_comment)
    ), "")
    '}'
    st:nl()
}
where {
    ?quiz a :Exercice .
    ?quiz :id ?id .
    optional {
        ?quiz :commentaireSucces_md ?correct_comment .
    }
    optional {
        ?quiz :commentaireSugg_md ?incorrect_comment .
    }
    FILTER(NOT EXISTS{?quiz :surveyjs_json ?json})
}
# FIXME: some exercises have multiple incorrect comments, almost identical,
# which creates multiple matches for the WHERE clause and thus duplicate files.
# We'll have to deal with them at some point, but for now just filter the first
# one arbitrarily to avoid messing with the output.
LIMIT 1