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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015-2020 Matthias Beyer <mail@beyermatthias.de> and contributors
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; version
// 2.1 of the License.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
use chrono::NaiveDateTime;
use failure::Fallible as Result;
use vobject::icalendar::Event;
use libimagerror::trace::MapErrTrace;
pub fn event_is_before<'a>(event: &Event<'a>, before_spec: &NaiveDateTime) -> bool {
let uid = || event.uid()
.map(|uid| uid.into_raw())
.unwrap_or_else(|| String::from("<No UID>"));
let dtend_is_before_spec : Result<bool> = event.dtend()
.map(|dtend| {
let datetime = try_to_parse_datetime(dtend.raw())?;
let result = datetime < *before_spec;
trace!("{} < {} => {}", datetime, before_spec, result);
Ok(result)
})
.unwrap_or_else(|| Err({
format_err!("Entry with UID {} has no end time, cannot determine whether to list it",
uid())
}));
let dtstamp_is_before_spec : Result<bool> = event.dtstamp()
.map(|dtstamp| {
let datetime = try_to_parse_datetime(dtstamp.raw())?;
let result = datetime < *before_spec;
trace!("{} < {} => {}", datetime, before_spec, result);
Ok(result)
})
.unwrap_or_else(|| Err({
format_err!("Entry with UID {} has no timestamp, cannot determine whether to list it",
uid())
}));
trace!("dtend_is_before_spec = {:?}", dtend_is_before_spec);
trace!("dtstamp_is_before_spec = {:?}", dtstamp_is_before_spec);
match (dtend_is_before_spec, dtstamp_is_before_spec) {
(Ok(b), _) => b,
(_, Ok(b)) => b,
(Err(e), _) => Err(e).map_err_trace_exit_unwrap()
}
}
pub fn event_is_after<'a>(event: &Event<'a>, after_spec: &NaiveDateTime) -> bool {
!event_is_before(event, after_spec)
}
fn try_to_parse_datetime(s: &str) -> Result<NaiveDateTime> {
const FORMATS : &[&str] = &[
"%Y%m%dT%H%M%S",
"%Y%m%dT%H%M%SZ"
];
::libimagutil::date::try_to_parse_datetime_from_string(s, FORMATS.iter())
.ok_or_else(|| format_err!("Cannot parse datetime: {}", s))
}
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