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/*
 * meli - jmap 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 super::*;
use crate::backends::{LazyCountSet, MailboxPermissions, SpecialUsageMailbox};
use std::sync::{Arc, Mutex, RwLock};

#[derive(Debug, Clone)]
pub struct JmapMailbox {
    pub name: String,
    pub path: String,
    pub hash: MailboxHash,
    pub children: Vec<MailboxHash>,
    pub id: Id<MailboxObject>,
    pub is_subscribed: bool,
    pub my_rights: JmapRights,
    pub parent_id: Option<Id<MailboxObject>>,
    pub parent_hash: Option<MailboxHash>,
    pub role: Option<String>,
    pub sort_order: u64,
    pub total_emails: Arc<Mutex<LazyCountSet>>,
    pub total_threads: u64,
    pub unread_emails: Arc<Mutex<LazyCountSet>>,
    pub unread_threads: u64,
    pub usage: Arc<RwLock<SpecialUsageMailbox>>,
    pub email_state: Arc<Mutex<Option<State<EmailObject>>>>,
    pub email_query_state: Arc<Mutex<Option<String>>>,
}

impl BackendMailbox for JmapMailbox {
    fn hash(&self) -> MailboxHash {
        self.hash
    }

    fn name(&self) -> &str {
        &self.name
    }

    fn path(&self) -> &str {
        &self.path
    }

    fn change_name(&mut self, _s: &str) {}

    fn clone(&self) -> Mailbox {
        Box::new(std::clone::Clone::clone(self))
    }

    fn children(&self) -> &[MailboxHash] {
        &self.children
    }

    fn parent(&self) -> Option<MailboxHash> {
        self.parent_hash
    }

    fn permissions(&self) -> MailboxPermissions {
        MailboxPermissions::default()
    }

    fn special_usage(&self) -> SpecialUsageMailbox {
        match self.role.as_ref().map(String::as_str) {
            Some("inbox") => SpecialUsageMailbox::Inbox,
            Some("archive") => SpecialUsageMailbox::Archive,
            Some("junk") => SpecialUsageMailbox::Junk,
            Some("trash") => SpecialUsageMailbox::Trash,
            Some("drafts") => SpecialUsageMailbox::Drafts,
            Some("sent") => SpecialUsageMailbox::Sent,
            Some(other) => {
                debug!(
                    "unknown JMAP mailbox role for mailbox {}: {}",
                    self.path(),
                    other
                );
                SpecialUsageMailbox::Normal
            }
            None => SpecialUsageMailbox::Normal,
        }
    }
    fn is_subscribed(&self) -> bool {
        self.is_subscribed
    }
    fn set_is_subscribed(&mut self, new_val: bool) -> Result<()> {
        self.is_subscribed = new_val;
        // FIXME: jmap subscribe
        Ok(())
    }

    fn set_special_usage(&mut self, new_val: SpecialUsageMailbox) -> Result<()> {
        *self.usage.write()? = new_val;
        Ok(())
    }

    fn count(&self) -> Result<(usize, usize)> {
        Ok((
            self.unread_emails.lock()?.len(),
            self.total_emails.lock()?.len(),
        ))
    }
}