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path: root/bin/domain/imag-timetrack/src/week.rs
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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015-2018 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 std::io::Write;
use std::str::FromStr;

use filters::filter::Filter;
use chrono::NaiveDateTime;

use libimagerror::trace::trace_error;
use libimagerror::trace::MapErrTrace;
use libimagerror::iter::TraceIterator;
use libimagerror::io::ToExitCode;
use libimagstore::store::FileLockEntry;
use libimagtimetrack::error::TimeTrackError as TTE;
use libimagtimetrack::timetrackingstore::TimeTrackStore;
use libimagtimetrack::timetracking::TimeTracking;
use libimagtimetrack::tag::TimeTrackingTag;
use libimagtimetrack::iter::filter::*;

use libimagrt::runtime::Runtime;

pub fn week(rt: &Runtime) -> i32 {
    let cmd = rt.cli().subcommand().1.unwrap(); // checked in main

    let filter = {
        use chrono::offset::Local;
        use chrono::naive::NaiveDate;
        use chrono::Weekday;
        use chrono::Datelike;

        let this_week = Local::now().iso_week();

        let start = match cmd
            .value_of("start")
            .map(|s| {
                ::chrono::naive::NaiveDateTime::from_str(s).map_err(TTE::from)
            })
        {
            None         => NaiveDate::from_isoywd(this_week.year(), this_week.week(), Weekday::Mon)
                .and_hms(0, 0, 0),
            Some(Ok(dt)) => dt,
            Some(Err(e)) => {
                trace_error(&e);
                return 1
            }
        };

        let end = match cmd
            .value_of("end")
            .map(|s| {
                ::chrono::naive::NaiveDateTime::from_str(s).map_err(TTE::from)
            })
        {
            None         => NaiveDate::from_isoywd(this_week.year(), this_week.week(), Weekday::Sun)
                .and_hms(23, 59, 59),
            Some(Ok(dt)) => dt,
            Some(Err(e)) => {
                trace_error(&e);
                return 1
            }
        };

        let tags = cmd
            .values_of("tags")
            .map(|ts| ts.into_iter().map(String::from).map(TimeTrackingTag::from).collect());

        let start_time_filter = has_start_time_where(move |dt: &NaiveDateTime| {
            start <= *dt
        });

        let end_time_filter = has_end_time_where(move |dt: &NaiveDateTime| {
            end >= *dt
        });

        let tags_filter = move |fle: &FileLockEntry| {
            match tags {
                Some(ref tags) => has_one_of_tags(&tags).filter(fle),
                None => true,
            }
        };

        tags_filter.and(start_time_filter).and(end_time_filter)
    };

    rt.store()
        .get_timetrackings()
        .map_err_trace_exit_unwrap(1)
        .trace_unwrap()
        .filter(Option::is_some)
        .map(Option::unwrap)
        .filter(|e| filter.filter(e))
        .map(|e| -> Result<_, TTE> {
            debug!("Processing {:?}", e.get_location());

            let tag   = e.get_timetrack_tag()?;
            debug!(" -> tag = {:?}", tag);

            let start = e.get_start_datetime()?;
            debug!(" -> start = {:?}", start);

            let end   = e.get_end_datetime()?;
            debug!(" -> end = {:?}", end);

            Ok((tag, start, end))
        })
        .trace_unwrap_exit(1)
        .map(|(tag, start, end)| {
            match (start, end) {
                (None, _)          => writeln!(rt.stdout(), "{} has no start time.", tag),
                (Some(s), None)    => writeln!(rt.stdout(), "{} | {} - ...", tag, s),
                (Some(s), Some(e)) => writeln!(rt.stdout(), "{} | {} - {}", tag, s, e),
            }
            .to_exit_code()
        })
        .collect::<Result<Vec<()>, _>>()
        .map(|_| 0)
        .unwrap_or_else(|e| e.code())
}