datevalidate.jspf

<%--
    @(#)datevalidate.jspf 0.01 26/08/2018
    Copyright (C) 2018 - 20xx MER-C

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as
    published by the Free Software Foundation, either version 3 of the
    License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-->

<%--
    Fetches and validates date ranges. Defaults may be supplied as the earliest_default
    and latest_default request attributes. Adds the following local variables:

        * earliest: the earliest date as a String, or the appropriate default value (pass to HTML)
        * latest: the latest date as a String, or the appropriate default value (pass to HTML)
        * earliest_ldate: the earliest date as a LocalDate, or the default value
        * latest_ldate: the latest date as a LocalDate, or the default value
        * earliest_odt: the earliest date as a OffsetDateTime, or the default value (pass to Wiki.RequestHelper)
        * latest_odt: the latest date as an OffsetDateTime, or the default value (pass to Wiki.RequestHelper)

    If the date range is invalid, an "error" attribute is added to the request.
--%>

<%
    String earliest = ServletUtils.sanitizeForAttribute(request.getParameter("earliest"));
    String latest = ServletUtils.sanitizeForAttribute(request.getParameter("latest"));

    LocalDate earliest_ldate = (LocalDate)request.getAttribute("earliest_default");
    LocalDate latest_ldate = (LocalDate)request.getAttribute("latest_default");

    if (!earliest.equals(""))
        earliest_ldate = LocalDate.parse(earliest);
    else if (earliest_ldate != null)
        earliest = earliest_ldate.format(DateTimeFormatter.ISO_LOCAL_DATE);

    if (!latest.equals(""))
        latest_ldate = LocalDate.parse(latest);
    else if (latest_ldate != null)
        latest = latest_ldate.format(DateTimeFormatter.ISO_LOCAL_DATE);

    // validate dates
    if (earliest_ldate != null && latest_ldate != null && earliest_ldate.isAfter(latest_ldate))
        request.setAttribute("error", "Earliest date is after latest date!");

    // cleanup
    OffsetDateTime earliest_odt = null, latest_odt = null;
    if (earliest_ldate != null)
        earliest_odt = earliest_ldate.atTime(OffsetTime.of(0, 0, 0, 0, ZoneOffset.UTC));
    if (latest_ldate != null)
        latest_odt = latest_ldate.atTime(OffsetTime.of(23, 59, 59, 0, ZoneOffset.UTC));
%>