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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015, 2016 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 libimagdiary::diary::Diary;
use libimagdiary::error::DiaryErrorKind as DEK;
use libimagdiary::error::MapErrInto;
use libimagentrylist::listers::core::CoreLister;
use libimagentrylist::lister::Lister;
use libimagrt::runtime::Runtime;
use libimagstore::store::Entry;
use libimagutil::warn_exit::warn_exit;
use libimagerror::trace::MapErrTrace;
use libimagutil::debug_result::*;

use util::get_diary_name;

pub fn list(rt: &Runtime) {
    let diaryname = get_diary_name(rt)
        .unwrap_or_else(|| warn_exit("No diary selected. Use either the configuration file or the commandline option", 1));

    fn entry_to_location_listing_string(e: &Entry) -> String {
        e.get_location().clone()
            .without_base()
            .to_str()
            .map_err_trace()
            .unwrap_or(String::from("<<Path Parsing Error>>"))
    }

    let diary = Diary::open(rt.store(), &diaryname[..]);
    debug!("Diary opened: {:?}", diary);
    diary.entries()
        .and_then(|es| {
            debug!("Iterator for listing: {:?}", es);

            let es = es
                .filter_map(|entry| {
                    entry
                        .map_dbg(|e| format!("Filtering: {:?}", e))
                        .map_err_trace() // error tracing here
                        .ok() // so we can ignore errors here
                })
                .map(|e| e.into());

            CoreLister::new(&entry_to_location_listing_string)
                .list(es)
                .map_err_into(DEK::IOError)
        })
        .map_dbg_str("Ok")
        .map_err_trace()
        .ok();
}