//
// 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 std::process::exit;

use libimagdiary::diary::Diary;
use libimagdiary::diaryid::DiaryId;
use libimagdiary::error::DiaryErrorKind as DEK;
use libimagdiary::error::MapErrInto;
use libimagentryedit::edit::Edit;
use libimagrt::runtime::Runtime;
use libimagerror::trace::trace_error;
use libimagerror::trace::trace_error_exit;
use libimagutil::warn_exit::warn_exit;
use libimagstore::store::FileLockEntry;
use libimagstore::store::Store;

use util::get_diary_name;

pub fn create(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));

    let prevent_edit = rt.cli().subcommand_matches("create").unwrap().is_present("no-edit");

    fn create_entry<'a>(diary: &'a Store, diaryname: &str, rt: &Runtime) -> FileLockEntry<'a> {
        use std::str::FromStr;

        let create = rt.cli().subcommand_matches("create").unwrap();
        let entry = if !create.is_present("timed") {
            debug!("Creating non-timed entry");
            diary.new_entry_today(diaryname)
        } else {
            let id = match create.value_of("timed") {
                Some("h") | Some("hourly") => {
                    debug!("Creating hourly-timed entry");
                    let time = DiaryId::now(String::from(diaryname));
                    let hr = create
                        .value_of("hour")
                        .map(|v| { debug!("Creating hourly entry with hour = {:?}", v); v })
                        .and_then(|s| {
                            FromStr::from_str(s)
                                .map_err(|_| warn!("Could not parse hour: '{}'", s))
                                .ok()
                        })
                        .unwrap_or(time.hour());

                    time.with_hour(hr).with_minute(0)
                },

                Some("m") | Some("minutely") => {
                    debug!("Creating minutely-timed entry");
                    let time = DiaryId::now(String::from(diaryname));
                    let hr = create
                        .value_of("hour")
                        .map(|h| { debug!("hour = {:?}", h); h })
                        .and_then(|s| {
                            FromStr::from_str(s)
                                .map_err(|_| warn!("Could not parse hour: '{}'", s))
                                .ok()
                        })
                        .unwrap_or(time.hour());

                    let min = create
                        .value_of("minute")
                        .map(|m| { debug!("minute = {:?}", m); m })
                        .and_then(|s| {
                            FromStr::from_str(s)
                                .map_err(|_| warn!("Could not parse minute: '{}'", s))
                                .ok()
                        })
                        .unwrap_or(time.minute());

                    time.with_hour(hr).with_minute(min)
                },

                Some(_) => {
                    warn!("Timed creation failed: Unknown spec '{}'",
                          create.value_of("timed").unwrap());
                    exit(1);
                },

                None => warn_exit("Unexpected error, cannot continue", 1)
            };

            diary.retrieve(id).map_err_into(DEK::StoreReadError)
        };

        match entry {
            Err(e) => trace_error_exit(&e, 1),
            Ok(e) => {
                debug!("Created: {}", e.get_location());
                e
            }
        }
    }

    let mut entry = create_entry(rt.store(), &diaryname, rt);

    let res = if prevent_edit {
        debug!("Not editing new diary entry");
        Ok(())
    } else {
        debug!("Editing new diary entry");
        entry.edit_content(rt).map_err_into(DEK::DiaryEditError)
    };

    if let Err(e) = res {
        trace_error(&e);
    } else {
        info!("Ok!");
    }
}