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/*
* meli - nntp module.
*
* Copyright 2019 Manos Pitsidianakis
*
* This file is part of meli.
*
* meli is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* meli 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with meli. If not, see <http://www.gnu.org/licenses/>.
*/
use crate::backends::{
BackendMailbox, LazyCountSet, Mailbox, MailboxHash, MailboxPermissions, SpecialUsageMailbox,
};
use crate::error::*;
use crate::UnixTimestamp;
use std::sync::{Arc, Mutex};
#[derive(Debug, Default, Clone)]
pub struct NntpMailbox {
pub(super) hash: MailboxHash,
pub(super) nntp_path: String,
pub high_watermark: Arc<Mutex<usize>>,
pub low_watermark: Arc<Mutex<usize>>,
pub exists: Arc<Mutex<LazyCountSet>>,
pub unseen: Arc<Mutex<LazyCountSet>>,
pub latest_article: Arc<Mutex<Option<UnixTimestamp>>>,
}
impl NntpMailbox {
pub fn nntp_path(&self) -> &str {
&self.nntp_path
}
}
impl BackendMailbox for NntpMailbox {
fn hash(&self) -> MailboxHash {
self.hash
}
fn name(&self) -> &str {
&self.nntp_path
}
fn path(&self) -> &str {
&self.nntp_path
}
fn change_name(&mut self, s: &str) {
self.nntp_path = s.to_string();
}
fn children(&self) -> &[MailboxHash] {
&[]
}
fn clone(&self) -> Mailbox {
Box::new(std::clone::Clone::clone(self))
}
fn special_usage(&self) -> SpecialUsageMailbox {
SpecialUsageMailbox::default()
}
fn parent(&self) -> Option<MailboxHash> {
None
}
fn permissions(&self) -> MailboxPermissions {
MailboxPermissions::default()
}
fn is_subscribed(&self) -> bool {
true
}
fn set_is_subscribed(&mut self, _new_val: bool) -> Result<()> {
Err(Error::new("Cannot set subscription in NNTP."))
}
fn set_special_usage(&mut self, _new_val: SpecialUsageMailbox) -> Result<()> {
Err(Error::new("Cannot set special usage in NNTP."))
}
fn count(&self) -> Result<(usize, usize)> {
Ok((self.unseen.lock()?.len(), self.exists.lock()?.len()))
}
}
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