use tokio_xmpp::{Client, Event, Packet};
use tokio::prelude::future::{self, Either};
use tokio::prelude::stream;
use tokio::prelude::{Future, Stream};
use std::collections::{HashMap, VecDeque};
use super::XmppCommand;
use super::stanzas;
use super::element_processor;
use crate::config;
#[derive(Default)]
struct XmppData {
    /// known roster data
    roster: HashMap<
        xmpp_parsers::Jid,
        (
            xmpp_parsers::roster::Subscription,
            xmpp_parsers::roster::Ask,
        ),
    >,
    /// ids counter
    counter: usize,
    /// map from id of adding item to roster and jid of item
    pending_add_roster_ids: HashMap<String, xmpp_parsers::Jid>,
    /// stanzas to send
    send_queue: VecDeque<minidom::Element>,
    /// outgoing mailbox
    outgoing_mailbox: HashMap<xmpp_parsers::Jid, Vec<String>>,
    /// muc id to muc jid
    mucs: HashMap<String, xmpp_parsers::Jid>,
}
struct XmppState {
    client: Client,
    data: XmppData,
}
pub struct XmppConnection {
    account: std::rc::Rc<config::Account>,
    state: XmppState,
}
struct XmppElementProcessor {
    incoming: element_processor::Processor<XmppConnection, bool, xmpp_parsers::Element>,
}
impl XmppElementProcessor {
    fn new() -> XmppElementProcessor {
        let mut incoming = element_processor::Processor::new(&|_, e| {
            warn!("Unknown stanza {:#?}", e);
            true
        });
        incoming.register(&XmppConnection::incoming_iq_processing);
        XmppElementProcessor { incoming }
    }
}
pub struct MaybeXmppConnection {
    account: std::rc::Rc<config::Account>,
    state: Option<XmppState>,
}
impl From<XmppConnection> for MaybeXmppConnection {
    fn from(from: XmppConnection) -> MaybeXmppConnection {
        MaybeXmppConnection {
            account: from.account,
            state: Some(from.state),
        }
    }
}
impl From<config::Account> for MaybeXmppConnection {
    fn from(from: config::Account) -> MaybeXmppConnection {
        MaybeXmppConnection {
            account: std::rc::Rc::new(from),
            state: None,
        }
    }
}
impl From<std::rc::Rc<config::Account>> for MaybeXmppConnection {
    fn from(from: std::rc::Rc<config::Account>) -> MaybeXmppConnection {
        MaybeXmppConnection {
            account: from,
            state: None,
        }
    }
}
impl MaybeXmppConnection {
    /// connects if nothing connected
    /// don't connect only if stop_future resolved
    pub fn connect<F>(
        self,
        stop_future: F,
    ) -> impl Future<Item = XmppConnection, Error = failure::Error>
    where
        F: future::Future + Clone + 'static,
        <F as hyper::rt::Future>::Error: Into<failure::Error> + Send,
    {
        info!("xmpp connection...");
        let MaybeXmppConnection { account, state } = self;
        if let Some(state) = state {
            Box::new(future::ok(XmppConnection { account, state }))
                as Box<dyn Future<Item = _, Error = _>>
        } else {
            Box::new(
                stop_future
                    .clone()
                    .select2(
                        future::loop_fn(account, move |account| {
                            info!("xmpp initialization...");
                            let client =
                                Client::new_with_jid(account.jid.clone(), &account.password);
                            info!("xmpp initialized");
                            let stop_future2 = stop_future.clone();
                            let stop_future3 = stop_future.clone();
                            let stop_future4 = stop_future.clone();
                            // future to wait for online
                            Box::new(
                                XmppConnection {
                                    state: XmppState {
                                        client,
                                        data: std::default::Default::default(),
                                    },
                                    account,
                                }
                                .processing(XmppConnection::online, stop_future.clone())
                                .map_err(|(acc, _)| acc)
                                .and_then(|(conn, r)| match r {
                                    Ok(Either::A(_)) => future::ok(conn),
                                    Ok(Either::B(_)) => future::err(conn.account),
                                    Err(_e) => future::err(conn.account),
                                })
                                .and_then(|conn| conn.initial_roster(stop_future2))
                                .and_then(|conn| conn.self_presence(stop_future3))
                                .and_then(|conn| conn.enter_mucs(stop_future4))
                                .then(|r| match r {
                                    Ok(conn) => future::ok(future::Loop::Break(conn)),
                                    Err(acc) => future::ok(future::Loop::Continue(acc)),
                                }),
                            )
                        })
                        .map_err(|_: ()| ()),
                    )
                    .then(|r| match r {
                        Ok(Either::A((_x, _b))) => future::err(format_err!("Stop XMMP connection")),
                        Ok(Either::B((x, _a))) => future::ok(x),
                        Err(Either::A((e, _b))) => future::err(e.into()),
                        Err(Either::B((_, _a))) => {
                            future::err(format_err!("Cann't initiate XMPP connection"))
                        }
                    }),
            )
        }
    }
}
impl XmppConnection {
    /// base XMPP processing
    /// Returns false on error to disconnect
    fn xmpp_processing(&mut self, event: &Event) -> bool {
        match event {
            Event::Stanza(stanza) => {
                let processors = XmppElementProcessor::new();
                processors.incoming.process(self, stanza.clone())
            }
            Event::Online => true,
            e => {
                warn!("Unexpected event {:?}", e);
                false
            }
        }
    }
    fn incoming_iq_processing(&mut self, iq: xmpp_parsers::iq::Iq) -> bool {
        use std::convert::TryInto;
        if let Some((_, jid)) = self.state.data.pending_add_roster_ids.remove_entry(&iq.id) {
            if let xmpp_parsers::iq::IqType::Result(None) = iq.payload {
                if self.state.data.roster.contains_key(&jid) {
                    info!("Jid {} updated to roster", jid);
                } else {
                    info!("Jid {} added in roster", jid);
                    self.state.data.roster.insert(
                        jid.clone(),
                        (
                            xmpp_parsers::roster::Subscription::None,
                            xmpp_parsers::roster::Ask::None,
                        ),
                    );
                }
                self.process_jid(&jid);
            } else {
                warn!(
                    "Wrong payload when adding {} to roster: {:?}",
                    jid, iq.payload
                );
            }
        }
        match iq.payload {
            xmpp_parsers::iq::IqType::Set(element) => {
                if let Some(roster) =
                    element.try_into().ok() as Option<xmpp_parsers::roster::Roster>
                {
                    for i in roster.items {
                        if let Some(ref mut rdata) = self.state.data.roster.get_mut(&i.jid) {
                            info!("Update {} in roster", i.jid);
                            rdata.0 = i.subscription;
                            rdata.1 = i.ask;
                        } else {
                            info!("Add {} to roster", i.jid);
                            self.state
                                .data
                                .roster
                                .insert(i.jid.clone(), (i.subscription, i.ask));
                        }
                        self.process_jid(&i.jid);
                    }
                }
            }
            xmpp_parsers::iq::IqType::Error(e) => {
                error!("iq error: {:?}", e);
                return false;
            }
            xmpp_parsers::iq::IqType::Get(element) => {
                if let Some(_ping) = element.try_into().ok() as Option<xmpp_parsers::ping::Ping> {
                    let pong = stanzas::make_pong(&iq.id, self.state.client.jid.clone(), iq.from);
                    self.state.data.send_queue.push_back(pong);
                }
            }
            _ => (), // ignore
        }
        true
    }
    /// process event from xmpp stream
    /// returns from future when condition met
    /// or stop future was resolved.
    /// Return item if connection was preserved or error otherwise.
    /// Second part is a state of stop_future
    pub fn processing<S, F, T, E>(
        self,
        stop_condition: S,
        stop_future: F,
    ) -> impl Future<
        Item = (Self, Result<Either<F, T>, E>),
        Error = (std::rc::Rc<config::Account>, Result<Either<F, T>, E>),
    >
    where
        F: Future<Item = T, Error = E> + 'static,
        S: FnMut(&mut Self, Event) -> Result<bool, ()> + 'static,
        T: 'static,
        E: 'static,
    {
        future::loop_fn(
            (self, stop_future, stop_condition),
            |(xmpp, stop_future, mut stop_condition)| {
                let XmppConnection {
                    state: XmppState { client, mut data },
                    account,
                } = xmpp;
                if let Some(send_element) = data.send_queue.pop_front() {
                    use tokio::prelude::Sink;
                    info!("Sending {:?}", send_element);
                    Box::new(
                        client
                            .send(Packet::Stanza(send_element))
                            .select2(stop_future)
                            .then(move |r| match r {
                                Ok(Either::A((client, b))) => {
                                    Box::new(future::ok(future::Loop::Continue((
                                        XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        },
                                        b,
                                        stop_condition,
                                    ))))
                                        as Box<dyn Future<Item = _, Error = _>>
                                }
                                Ok(Either::B((t, a))) => Box::new(a.then(|r| match r {
                                    Ok(client) => future::ok(future::Loop::Break((
                                        XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        },
                                        Ok(Either::B(t)),
                                    ))),
                                    Err(se) => {
                                        warn!("XMPP sending error: {}", se);
                                        future::err((account, Ok(Either::B(t))))
                                    }
                                })),
                                Err(Either::A((e, b))) => {
                                    warn!("XMPP sending error: {}", e);
                                    Box::new(future::err((account, Ok(Either::A(b)))))
                                }
                                Err(Either::B((e, a))) => Box::new(a.then(|r| match r {
                                    Ok(client) => future::ok(future::Loop::Break((
                                        XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        },
                                        Err(e),
                                    ))),
                                    Err(se) => {
                                        warn!("XMPP sending error: {}", se);
                                        future::err((account, Err(e)))
                                    }
                                })),
                            }),
                    ) as Box<dyn Future<Item = _, Error = _>>
                } else {
                    Box::new(
                        client
                            .into_future()
                            .select2(stop_future)
                            .then(move |r| match r {
                                Ok(Either::A(((event, client), b))) => {
                                    if let Some(event) = event {
                                        let mut xmpp = XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        };
                                        if xmpp.xmpp_processing(&event) {
                                            match stop_condition(&mut xmpp, event) {
                                                Ok(true) => future::ok(future::Loop::Break((
                                                    xmpp,
                                                    Ok(Either::A(b)),
                                                ))),
                                                Ok(false) => future::ok(future::Loop::Continue((
                                                    xmpp,
                                                    b,
                                                    stop_condition,
                                                ))),
                                                Err(_e) => {
                                                    future::err((xmpp.account, Ok(Either::A(b))))
                                                }
                                            }
                                        } else {
                                            future::err((xmpp.account, Ok(Either::A(b))))
                                        }
                                    } else {
                                        future::err((account, Ok(Either::A(b))))
                                    }
                                }
                                Ok(Either::B((t, a))) => {
                                    if let Some(client) = a.into_inner() {
                                        future::ok(future::Loop::Break((
                                            XmppConnection {
                                                state: XmppState { client, data },
                                                account,
                                            },
                                            Ok(Either::B(t)),
                                        )))
                                    } else {
                                        future::err((account, Ok(Either::B(t))))
                                    }
                                }
                                Err(Either::A((e, b))) => {
                                    warn!("XMPP error: {}", e.0);
                                    future::err((account, Ok(Either::A(b))))
                                }
                                Err(Either::B((e, a))) => {
                                    if let Some(client) = a.into_inner() {
                                        future::ok(future::Loop::Break((
                                            XmppConnection {
                                                state: XmppState { client, data },
                                                account,
                                            },
                                            Err(e),
                                        )))
                                    } else {
                                        future::err((account, Err(e)))
                                    }
                                }
                            }),
                    )
                }
            },
        )
    }
    /// get connection and wait for online status and set presence
    /// returns error if something went wrong and xmpp connection is broken
    fn online(&mut self, event: Event) -> Result<bool, ()> {
        match event {
            Event::Online => {
                info!("Online!");
                Ok(true)
            }
            Event::Stanza(s) => {
                warn!("Stanza before online: {:?}", s);
                Ok(false)
            }
            _ => {
                error!("Disconnected while online");
                Err(())
            }
        }
    }
    fn process_initial_roster(&mut self, event: Event, id_init_roster: &str) -> Result<bool, ()> {
        if let Event::Stanza(s) = event {
            use std::convert::TryInto;
            match s.try_into() as Result<xmpp_parsers::iq::Iq, _> {
                Ok(iq) => {
                    if iq.id == id_init_roster {
                        match iq.payload {
                            xmpp_parsers::iq::IqType::Error(_e) => {
                                error!("Get error instead of roster");
                                Err(())
                            }
                            xmpp_parsers::iq::IqType::Result(Some(result)) => {
                                match result.try_into() as Result<xmpp_parsers::roster::Roster, _> {
                                    Ok(roster) => {
                                        self.state.data.roster.clear();
                                        info!("Got first roster:");
                                        for i in roster.items {
                                            info!(" >>> {:?}", i);
                                            self.state
                                                .data
                                                .roster
                                                .insert(i.jid, (i.subscription, i.ask));
                                        }
                                        Ok(true)
                                    }
                                    Err(e) => {
                                        error!("Cann't parse roster: {}", e);
                                        Err(())
                                    }
                                }
                            }
                            _ => {
                                error!("Unknown result of roster");
                                Err(())
                            }
                        }
                    } else {
                        Ok(false)
                    }
                }
                Err(_e) => Ok(false),
            }
        } else {
            error!("Wrong event while waiting roster");
            Err(())
        }
    }
    fn initial_roster<F, E>(
        self,
        stop_future: F,
    ) -> impl Future<Item = Self, Error = std::rc::Rc<config::Account>>
    where
        F: Future<Error = E> + 'static,
        E: 'static,
    {
        let XmppConnection {
            account,
            state: XmppState { client, mut data },
        } = self;
        use tokio::prelude::Sink;
        data.counter += 1;
        let id_init_roster = format!("id_init_roster{}", data.counter);
        let get_roster = stanzas::make_get_roster(&id_init_roster);
        let account2 = account.clone();
        info!("Quering roster... {:?}", get_roster);
        client
            .send(Packet::Stanza(get_roster))
            .map_err(move |e| {
                error!("Error on querying roster: {}", e);
                account2
            })
            .and_then(move |client| {
                XmppConnection {
                    state: XmppState { client, data },
                    account,
                }
                .processing(
                    move |conn, event| conn.process_initial_roster(event, &id_init_roster),
                    stop_future,
                )
                .map_err(|(account, _)| account)
                .and_then(|(conn, r)| match r {
                    Ok(Either::A(_)) => future::ok(conn),
                    Ok(Either::B(_)) => future::err(conn.account),
                    Err(_e) => future::err(conn.account),
                })
            })
    }
    fn self_presence<F, E>(
        self,
        stop_future: F,
    ) -> impl Future<Item = Self, Error = std::rc::Rc<config::Account>>
    where
        F: Future<Error = E> + 'static,
        E: Into<failure::Error> + 'static,
    {
        let XmppConnection {
            account,
            state: XmppState { client, data },
        } = self;
        use tokio::prelude::Sink;
        let presence = stanzas::make_presence(&account);
        let account2 = account.clone();
        info!("Sending presence... {:?}", presence);
        client
            .send(Packet::Stanza(presence))
            .map_err(|e| {
                error!("Error on send self-presence: {}", e);
                account2
            })
            .and_then(move |client| {
                XmppConnection {
                    state: XmppState { client, data },
                    account,
                }
                .processing(
                    move |conn, event| {
                        if let Event::Stanza(s) = event {
                            use std::convert::TryInto;
                            match s.try_into() as Result<xmpp_parsers::presence::Presence, _> {
                                Ok(presence) => {
                                    Ok(presence.from.as_ref() == Some(&conn.state.client.jid))
                                }
                                Err(e) => {
                                    warn!("Not a self-presence: {}", e);
                                    Ok(false)
                                }
                            }
                        } else {
                            error!("Wrong event while waiting self-presence");
                            Err(())
                        }
                    },
                    stop_future,
                )
                .map_err(|(account, _)| account)
                .and_then(|(conn, r)| match r {
                    Ok(Either::A(_)) => future::ok(conn),
                    Ok(Either::B(_)) => future::err(conn.account),
                    Err(_e) => future::err(conn.account),
                })
            })
    }
    fn process_jid(&mut self, xmpp_to: &xmpp_parsers::Jid) {
        if let Some(ref mut mailbox) = self.state.data.outgoing_mailbox.get_mut(xmpp_to) {
            if !mailbox.is_empty() {
                if let Some(ref mut rdata) = self.state.data.roster.get_mut(xmpp_to) {
                    info!("Jid {} in roster", xmpp_to);
                    let sub_to = match rdata.0 {
                        xmpp_parsers::roster::Subscription::To => true,
                        xmpp_parsers::roster::Subscription::Both => true,
                        _ => false,
                    };
                    if sub_to {
                        info!("Subscribed to {}", xmpp_to);
                        self.state.data.send_queue.extend(
                            mailbox.drain(..).map(|message| {
                                stanzas::make_chat_message(xmpp_to.clone(), message)
                            }),
                        );
                    } else if rdata.1 == xmpp_parsers::roster::Ask::None {
                        info!("Not subscribed to {}", xmpp_to);
                        self.state
                            .data
                            .send_queue
                            .push_back(stanzas::make_ask_subscribe(xmpp_to.clone()));
                    }
                    let sub_from = match rdata.0 {
                        xmpp_parsers::roster::Subscription::From => true,
                        xmpp_parsers::roster::Subscription::Both => true,
                        _ => false,
                    };
                    if !sub_from {
                        info!("Not subscription from {}", xmpp_to);
                        self.state
                            .data
                            .send_queue
                            .push_back(stanzas::make_allow_subscribe(xmpp_to.clone()));
                    }
                } else {
                    info!("Jid {} not in roster", xmpp_to);
                    self.state.data.counter += 1;
                    let id_add_roster = format!("id_add_roster{}", self.state.data.counter);
                    let add_roster = stanzas::make_add_roster(&id_add_roster, xmpp_to.clone());
                    self.state
                        .data
                        .pending_add_roster_ids
                        .insert(id_add_roster, xmpp_to.clone());
                    info!("Adding jid to roster... {:?}", add_roster);
                    self.state.data.send_queue.push_back(add_roster);
                }
            }
        }
    }
    pub fn process_command(&mut self, cmd: XmppCommand) {
        info!("Got command");
        match cmd {
            XmppCommand::Chat { xmpp_to, message } => {
                self.state
                    .data
                    .outgoing_mailbox
                    .entry(xmpp_to.clone())
                    .or_default()
                    .push(message);
                self.process_jid(&xmpp_to);
            }
            XmppCommand::Chatroom { muc_id, message } => {
                if let Some(muc) = self.state.data.mucs.get(&muc_id) {
                    self.state
                        .data
                        .send_queue
                        .push_back(stanzas::make_muc_message(muc.clone(), message));
                } else {
                    error!("Not found MUC {}", muc_id);
                }
            }
            XmppCommand::Ping => {
                self.state.data.counter += 1;
                let id_ping = format!("id_ping{}", self.state.data.counter);
                let ping = stanzas::make_ping(&id_ping, self.state.client.jid.clone());
                self.state.data.send_queue.push_back(ping);
            }
        }
    }
    pub fn shutdown(self) -> impl Future<Item = (), Error = failure::Error> {
        info!("Shutdown connection");
        let XmppConnection { account, state } = self;
        stream::iter_ok(
            state
                .data
                .mucs
                .values()
                .map(std::clone::Clone::clone)
                .collect::<Vec<_>>(),
        )
        .fold(state, move |XmppState { client, data }, muc_jid| {
            let muc_presence =
                stanzas::make_muc_presence_leave(account.jid.clone(), muc_jid.clone());
            info!("Sending muc leave presence... {:?}", muc_presence);
            use tokio::prelude::Sink;
            client
                .send(Packet::Stanza(muc_presence))
                .map_err(|e| {
                    error!("Error on send muc presence: {}", e);
                    e
                })
                .and_then(|client| future::ok(XmppState { client, data }))
        })
        .map(|_| ())
    }
    fn enter_mucs<F, E>(
        self,
        _stop_future: F,
    ) -> impl Future<Item = Self, Error = std::rc::Rc<config::Account>>
    where
        F: Future<Error = E> + 'static,
        E: Into<failure::Error> + 'static,
    {
        let XmppConnection { account, state } = self;
        let account2 = account.clone();
        let account3 = account.clone();
        stream::iter_ok(account.chatrooms.clone())
            .fold(state, move |XmppState { client, mut data }, muc_jid| {
                data.counter += 1;
                let id_muc_presence = format!("id_muc_presence{}", data.counter);
                let muc_presence = stanzas::make_muc_presence(
                    &id_muc_presence,
                    account2.jid.clone(),
                    muc_jid.1.clone(),
                );
                info!("Sending muc presence... {:?}", muc_presence);
                let account4 = account2.clone();
                use tokio::prelude::Sink;
                client
                    .send(Packet::Stanza(muc_presence))
                    .map_err(|e| {
                        error!("Error on send muc presence: {}", e);
                        account4
                    })
                    .and_then(|client| {
                        data.mucs.insert(muc_jid.0, muc_jid.1);
                        future::ok(XmppState { client, data })
                    })
            })
            .map(|state| XmppConnection {
                account: account3,
                state,
            })
    }
}

use tokio_xmpp::{Client, Event, Packet};
use tokio::prelude::future::{self, Either};
use tokio::prelude::stream;
use tokio::prelude::{Future, Stream};
use std::collections::{HashMap, VecDeque};
use super::XmppCommand;
use super::stanzas;
use super::element_processor;
use crate::config;
#[derive(Default)]
struct XmppData {
    /// known roster data
    roster: HashMap<
        xmpp_parsers::Jid,
        (
            xmpp_parsers::roster::Subscription,
            xmpp_parsers::roster::Ask,
        ),
    >,
    /// ids counter
    counter: usize,
    /// map from id of adding item to roster and jid of item
    pending_add_roster_ids: HashMap<String, xmpp_parsers::Jid>,
    /// stanzas to send
    send_queue: VecDeque<minidom::Element>,
    /// outgoing mailbox
    outgoing_mailbox: HashMap<xmpp_parsers::Jid, Vec<String>>,
    /// muc id to muc jid
    mucs: HashMap<String, xmpp_parsers::Jid>,
}
struct XmppState {
    client: Client,
    data: XmppData,
}
pub struct XmppConnection {
    account: std::rc::Rc<config::Account>,
    state: XmppState,
}
struct XmppElementProcessor {
    incoming: element_processor::Processor<XmppConnection, bool, xmpp_parsers::Element>,
}
impl XmppElementProcessor {
    fn new() -> XmppElementProcessor {
        let mut incoming = element_processor::Processor::new(&|_, e| {
            warn!("Unknown stanza {:#?}", e);
            true
        });
        incoming.register(&XmppConnection::incoming_iq_processing);
        XmppElementProcessor { incoming }
    }
}
pub struct MaybeXmppConnection {
    account: std::rc::Rc<config::Account>,
    state: Option<XmppState>,
}
impl From<XmppConnection> for MaybeXmppConnection {
    fn from(from: XmppConnection) -> MaybeXmppConnection {
        MaybeXmppConnection {
            account: from.account,
            state: Some(from.state),
        }
    }
}
impl From<config::Account> for MaybeXmppConnection {
    fn from(from: config::Account) -> MaybeXmppConnection {
        MaybeXmppConnection {
            account: std::rc::Rc::new(from),
            state: None,
        }
    }
}
impl From<std::rc::Rc<config::Account>> for MaybeXmppConnection {
    fn from(from: std::rc::Rc<config::Account>) -> MaybeXmppConnection {
        MaybeXmppConnection {
            account: from,
            state: None,
        }
    }
}
impl MaybeXmppConnection {
    /// connects if nothing connected
    /// don't connect only if stop_future resolved
    pub fn connect<F>(
        self,
        stop_future: F,
    ) -> impl Future<Item = XmppConnection, Error = failure::Error>
    where
        F: future::Future + Clone + 'static,
        <F as hyper::rt::Future>::Error: Into<failure::Error> + Send,
    {
        info!("xmpp connection...");
        let MaybeXmppConnection { account, state } = self;
        if let Some(state) = state {
            Box::new(future::ok(XmppConnection { account, state }))
                as Box<dyn Future<Item = _, Error = _>>
        } else {
            Box::new(
                stop_future
                    .clone()
                    .select2(
                        future::loop_fn(account, move |account| {
                            info!("xmpp initialization...");
                            let client =
                                Client::new_with_jid(account.jid.clone(), &account.password);
                            info!("xmpp initialized");
                            let stop_future2 = stop_future.clone();
                            let stop_future3 = stop_future.clone();
                            let stop_future4 = stop_future.clone();
                            // future to wait for online
                            Box::new(
                                XmppConnection {
                                    state: XmppState {
                                        client,
                                        data: std::default::Default::default(),
                                    },
                                    account,
                                }
                                .processing(XmppConnection::online, stop_future.clone())
                                .map_err(|(acc, _)| acc)
                                .and_then(|(conn, r)| match r {
                                    Ok(Either::A(_)) => future::ok(conn),
                                    Ok(Either::B(_)) => future::err(conn.account),
                                    Err(_e) => future::err(conn.account),
                                })
                                .and_then(|conn| conn.initial_roster(stop_future2))
                                .and_then(|conn| conn.self_presence(stop_future3))
                                .and_then(|conn| conn.enter_mucs(stop_future4))
                                .then(|r| match r {
                                    Ok(conn) => future::ok(future::Loop::Break(conn)),
                                    Err(acc) => future::ok(future::Loop::Continue(acc)),
                                }),
                            )
                        })
                        .map_err(|_: ()| ()),
                    )
                    .then(|r| match r {
                        Ok(Either::A((_x, _b))) => future::err(format_err!("Stop XMMP connection")),
                        Ok(Either::B((x, _a))) => future::ok(x),
                        Err(Either::A((e, _b))) => future::err(e.into()),
                        Err(Either::B((_, _a))) => {
                            future::err(format_err!("Cann't initiate XMPP connection"))
                        }
                    }),
            )
        }
    }
}
impl XmppConnection {
    /// base XMPP processing
    /// Returns false on error to disconnect
    fn xmpp_processing(&mut self, event: &Event) -> bool {
        match event {
            Event::Stanza(stanza) => {
                let processors = XmppElementProcessor::new();
                processors.incoming.process(self, stanza.clone())
            }
            Event::Online => true,
            e => {
                warn!("Unexpected event {:?}", e);
                false
            }
        }
    }
    fn incoming_iq_processing(&mut self, iq: xmpp_parsers::iq::Iq) -> bool {
        use std::convert::TryInto;
        if let Some((_, jid)) = self.state.data.pending_add_roster_ids.remove_entry(&iq.id) {
            if let xmpp_parsers::iq::IqType::Result(None) = iq.payload {
                if self.state.data.roster.contains_key(&jid) {
                    info!("Jid {} updated to roster", jid);
                } else {
                    info!("Jid {} added in roster", jid);
                    self.state.data.roster.insert(
                        jid.clone(),
                        (
                            xmpp_parsers::roster::Subscription::None,
                            xmpp_parsers::roster::Ask::None,
                        ),
                    );
                }
                self.process_jid(&jid);
            } else {
                warn!(
                    "Wrong payload when adding {} to roster: {:?}",
                    jid, iq.payload
                );
            }
        }
        match iq.payload {
            xmpp_parsers::iq::IqType::Set(element) => {
                if let Some(roster) =
                    element.try_into().ok() as Option<xmpp_parsers::roster::Roster>
                {
                    for i in roster.items {
                        if let Some(ref mut rdata) = self.state.data.roster.get_mut(&i.jid) {
                            info!("Update {} in roster", i.jid);
                            rdata.0 = i.subscription;
                            rdata.1 = i.ask;
                        } else {
                            info!("Add {} to roster", i.jid);
                            self.state
                                .data
                                .roster
                                .insert(i.jid.clone(), (i.subscription, i.ask));
                        }
                        self.process_jid(&i.jid);
                    }
                }
            }
            xmpp_parsers::iq::IqType::Error(e) => {
                error!("iq error: {:?}", e);
                return false;
            }
            xmpp_parsers::iq::IqType::Get(element) => {
                if let Some(_ping) = element.try_into().ok() as Option<xmpp_parsers::ping::Ping> {
                    let pong = stanzas::make_pong(&iq.id, self.state.client.jid.clone(), iq.from);
                    self.state.data.send_queue.push_back(pong);
                }
            }
            _ => (), // ignore
        }
        true
    }
    /// process event from xmpp stream
    /// returns from future when condition met
    /// or stop future was resolved.
    /// Return item if connection was preserved or error otherwise.
    /// Second part is a state of stop_future
    pub fn processing<S, F, T, E>(
        self,
        stop_condition: S,
        stop_future: F,
    ) -> impl Future<
        Item = (Self, Result<Either<F, T>, E>),
        Error = (std::rc::Rc<config::Account>, Result<Either<F, T>, E>),
    >
    where
        F: Future<Item = T, Error = E> + 'static,
        S: FnMut(&mut Self, Event) -> Result<bool, ()> + 'static,
        T: 'static,
        E: 'static,
    {
        future::loop_fn(
            (self, stop_future, stop_condition),
            |(xmpp, stop_future, mut stop_condition)| {
                let XmppConnection {
                    state: XmppState { client, mut data },
                    account,
                } = xmpp;
                if let Some(send_element) = data.send_queue.pop_front() {
                    use tokio::prelude::Sink;
                    info!("Sending {:?}", send_element);
                    Box::new(
                        client
                            .send(Packet::Stanza(send_element))
                            .select2(stop_future)
                            .then(move |r| match r {
                                Ok(Either::A((client, b))) => {
                                    Box::new(future::ok(future::Loop::Continue((
                                        XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        },
                                        b,
                                        stop_condition,
                                    ))))
                                        as Box<dyn Future<Item = _, Error = _>>
                                }
                                Ok(Either::B((t, a))) => Box::new(a.then(|r| match r {
                                    Ok(client) => future::ok(future::Loop::Break((
                                        XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        },
                                        Ok(Either::B(t)),
                                    ))),
                                    Err(se) => {
                                        warn!("XMPP sending error: {}", se);
                                        future::err((account, Ok(Either::B(t))))
                                    }
                                })),
                                Err(Either::A((e, b))) => {
                                    warn!("XMPP sending error: {}", e);
                                    Box::new(future::err((account, Ok(Either::A(b)))))
                                }
                                Err(Either::B((e, a))) => Box::new(a.then(|r| match r {
                                    Ok(client) => future::ok(future::Loop::Break((
                                        XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        },
                                        Err(e),
                                    ))),
                                    Err(se) => {
                                        warn!("XMPP sending error: {}", se);
                                        future::err((account, Err(e)))
                                    }
                                })),
                            }),
                    ) as Box<dyn Future<Item = _, Error = _>>
                } else {
                    Box::new(
                        client
                            .into_future()
                            .select2(stop_future)
                            .then(move |r| match r {
                                Ok(Either::A(((event, client), b))) => {
                                    if let Some(event) = event {
                                        let mut xmpp = XmppConnection {
                                            state: XmppState { client, data },
                                            account,
                                        };
                                        if xmpp.xmpp_processing(&event) {
                                            match stop_condition(&mut xmpp, event) {
                                                Ok(true) => future::ok(future::Loop::Break((
                                                    xmpp,
                                                    Ok(Either::A(b)),
                                                ))),
                                                Ok(false) => future::ok(future::Loop::Continue((
                                                    xmpp,
                                                    b,
                                                    stop_condition,
                                                ))),
                                                Err(_e) => {
                                                    future::err((xmpp.account, Ok(Either::A(b))))
                                                }
                                            }
                                        } else {
                                            future::err((xmpp.account, Ok(Either::A(b))))
                                        }
                                    } else {
                                        future::err((account, Ok(Either::A(b))))
                                    }
                                }
                                Ok(Either::B((t, a))) => {
                                    if let Some(client) = a.into_inner() {
                                        future::ok(future::Loop::Break((
                                            XmppConnection {
                                                state: XmppState { client, data },
                                                account,
                                            },
                                            Ok(Either::B(t)),
                                        )))
                                    } else {
                                        future::err((account, Ok(Either::B(t))))
                                    }
                                }
                                Err(Either::A((e, b))) => {
                                    warn!("XMPP error: {}", e.0);
                                    future::err((account, Ok(Either::A(b))))
                                }
                                Err(Either::B((e, a))) => {
                                    if let Some(client) = a.into_inner() {
                                        future::ok(future::Loop::Break((
                                            XmppConnection {
                                                state: XmppState { client, data },
                                                account,
                                            },
                                            Err(e),
                                        )))
                                    } else {
                                        future::err((account, Err(e)))
                                    }
                                }
                            }),
                    )
                }
            },
        )
    }
    /// get connection and wait for online status and set presence
    /// returns error if something went wrong and xmpp connection is broken
    fn online(&mut self, event: Event) -> Result<bool, ()> {
        match event {
            Event::Online => {
                info!("Online!");
                Ok(true)
            }
            Event::Stanza(s) => {
                warn!("Stanza before online: {:?}", s);
                Ok(false)
            }
            _ => {
                error!("Disconnected while online");
                Err(())
            }
        }
    }
    fn process_initial_roster(&mut self, event: Event, id_init_roster: &str) -> Result<bool, ()> {
        if let Event::Stanza(s) = event {
            use std::convert::TryInto;
            match s.try_into() as Result<xmpp_parsers::iq::Iq, _> {
                Ok(iq) => {
                    if iq.id == id_init_roster {
                        match iq.payload {
                            xmpp_parsers::iq::IqType::Error(_e) => {
                                error!("Get error instead of roster");
                                Err(())
                            }
                            xmpp_parsers::iq::IqType::Result(Some(result)) => {
                                match result.try_into() as Result<xmpp_parsers::roster::Roster, _> {
                                    Ok(roster) => {
                                        self.state.data.roster.clear();
                                        info!("Got first roster:");
                                        for i in roster.items {
                                            info!(" >>> {:?}", i);
                                            self.state
                                                .data
                                                .roster
                                                .insert(i.jid, (i.subscription, i.ask));
                                        }
                                        Ok(true)
                                    }
                                    Err(e) => {
                                        error!("Cann't parse roster: {}", e);
                                        Err(())
                                    }
                                }
                            }
                            _ => {
                                error!("Unknown result of roster");
                                Err(())
                            }
                        }
                    } else {
                        Ok(false)
                    }
                }
                Err(_e) => Ok(false),
            }
        } else {
            error!("Wrong event while waiting roster");
            Err(())
        }
    }
    fn initial_roster<F, E>(
        self,
        stop_future: F,
    ) -> impl Future<Item = Self, Error = std::rc::Rc<config::Account>>
    where
        F: Future<Error = E> + 'static,
        E: 'static,
    {
        let XmppConnection {
            account,
            state: XmppState { client, mut data },
        } = self;
        use tokio::prelude::Sink;
        data.counter += 1;
        let id_init_roster = format!("id_init_roster{}", data.counter);
        let get_roster = stanzas::make_get_roster(&id_init_roster);
        let account2 = account.clone();
        info!("Quering roster... {:?}", get_roster);
        client
            .send(Packet::Stanza(get_roster))
            .map_err(move |e| {
                error!("Error on querying roster: {}", e);
                account2
            })
            .and_then(move |client| {
                XmppConnection {
                    state: XmppState { client, data },
                    account,
                }
                .processing(
                    move |conn, event| conn.process_initial_roster(event, &id_init_roster),
                    stop_future,
                )
                .map_err(|(account, _)| account)
                .and_then(|(conn, r)| match r {
                    Ok(Either::A(_)) => future::ok(conn),
                    Ok(Either::B(_)) => future::err(conn.account),
                    Err(_e) => future::err(conn.account),
                })
            })
    }
    fn self_presence<F, E>(
        self,
        stop_future: F,
    ) -> impl Future<Item = Self, Error = std::rc::Rc<config::Account>>
    where
        F: Future<Error = E> + 'static,
        E: Into<failure::Error> + 'static,
    {
        let XmppConnection {
            account,
            state: XmppState { client, data },
        } = self;
        use tokio::prelude::Sink;
        let presence = stanzas::make_presence(&account);
        let account2 = account.clone();
        info!("Sending presence... {:?}", presence);
        client
            .send(Packet::Stanza(presence))
            .map_err(|e| {
                error!("Error on send self-presence: {}", e);
                account2
            })
            .and_then(move |client| {
                XmppConnection {
                    state: XmppState { client, data },
                    account,
                }
                .processing(
                    move |conn, event| {
                        if let Event::Stanza(s) = event {
                            use std::convert::TryInto;
                            match s.try_into() as Result<xmpp_parsers::presence::Presence, _> {
                                Ok(presence) => {
                                    Ok(presence.from.as_ref() == Some(&conn.state.client.jid))
                                }
                                Err(e) => {
                                    warn!("Not a self-presence: {}", e);
                                    Ok(false)
                                }
                            }
                        } else {
                            error!("Wrong event while waiting self-presence");
                            Err(())
                        }
                    },
                    stop_future,
                )
                .map_err(|(account, _)| account)
                .and_then(|(conn, r)| match r {
                    Ok(Either::A(_)) => future::ok(conn),
                    Ok(Either::B(_)) => future::err(conn.account),
                    Err(_e) => future::err(conn.account),
                })
            })
    }
    fn process_jid(&mut self, xmpp_to: &xmpp_parsers::Jid) {
        if let Some(ref mut mailbox) = self.state.data.outgoing_mailbox.get_mut(xmpp_to) {
            if !mailbox.is_empty() {
                if let Some(ref mut rdata) = self.state.data.roster.get_mut(xmpp_to) {
                    info!("Jid {} in roster", xmpp_to);
                    let sub_to = match rdata.0 {
                        xmpp_parsers::roster::Subscription::To => true,
                        xmpp_parsers::roster::Subscription::Both => true,
                        _ => false,
                    };
                    if sub_to {
                        info!("Subscribed to {}", xmpp_to);
                        self.state.data.send_queue.extend(
                            mailbox.drain(..).map(|message| {
                                stanzas::make_chat_message(xmpp_to.clone(), message)
                            }),
                        );
                    } else if rdata.1 == xmpp_parsers::roster::Ask::None {
                        info!("Not subscribed to {}", xmpp_to);
                        self.state
                            .data
                            .send_queue
                            .push_back(stanzas::make_ask_subscribe(xmpp_to.clone()));
                    }
                    let sub_from = match rdata.0 {
                        xmpp_parsers::roster::Subscription::From => true,
                        xmpp_parsers::roster::Subscription::Both => true,
                        _ => false,
                    };
                    if !sub_from {
                        info!("Not subscription from {}", xmpp_to);
                        self.state
                            .data
                            .send_queue
                            .push_back(stanzas::make_allow_subscribe(xmpp_to.clone()));
                    }
                } else {
                    info!("Jid {} not in roster", xmpp_to);
                    self.state.data.counter += 1;
                    let id_add_roster = format!("id_add_roster{}", self.state.data.counter);
                    let add_roster = stanzas::make_add_roster(&id_add_roster, xmpp_to.clone());
                    self.state
                        .data
                        .pending_add_roster_ids
                        .insert(id_add_roster, xmpp_to.clone());
                    info!("Adding jid to roster... {:?}", add_roster);
                    self.state.data.send_queue.push_back(add_roster);
                }
            }
        }
    }
    pub fn process_command(&mut self, cmd: XmppCommand) {
        info!("Got command");
        match cmd {
            XmppCommand::Chat { xmpp_to, message } => {
                self.state
                    .data
                    .outgoing_mailbox
                    .entry(xmpp_to.clone())
                    .or_default()
                    .push(message);
                self.process_jid(&xmpp_to);
            }
            XmppCommand::Chatroom { muc_id, message } => {
                if let Some(muc) = self.state.data.mucs.get(&muc_id) {
                    self.state
                        .data
                        .send_queue
                        .push_back(stanzas::make_muc_message(muc.clone(), message));
                } else {
                    error!("Not found MUC {}", muc_id);
                }
            }
            XmppCommand::Ping => {
                self.state.data.counter += 1;
                let id_ping = format!("id_ping{}", self.state.data.counter);
                let ping = stanzas::make_ping(&id_ping, self.state.client.jid.clone());
                self.state.data.send_queue.push_back(ping);
            }
        }
    }
    pub fn shutdown(self) -> impl Future<Item = (), Error = failure::Error> {
        info!("Shutdown connection");
        let XmppConnection { account, state } = self;
        stream::iter_ok(
            state
                .data
                .mucs
                .values()
                .map(std::clone::Clone::clone)
                .collect::<Vec<_>>(),
        )
        .fold(state, move |XmppState { client, data }, muc_jid| {
            let muc_presence =
                stanzas::make_muc_presence_leave(account.jid.clone(), muc_jid.clone());
            info!("Sending muc leave presence... {:?}", muc_presence);
            use tokio::prelude::Sink;
            client
                .send(Packet::Stanza(muc_presence))
                .map_err(|e| {
                    error!("Error on send muc presence: {}", e);
                    e
                })
                .and_then(|client| future::ok(XmppState { client, data }))
        })
        .map(|_| ())
    }
    fn enter_mucs<F, E>(
        self,
        _stop_future: F,
    ) -> impl Future<Item = Self, Error = std::rc::Rc<config::Account>>
    where
        F: Future<Error = E> + 'static,
        E: Into<failure::Error> + 'static,
    {
        let XmppConnection { account, state } = self;
        let account2 = account.clone();
        let account3 = account.clone();
        stream::iter_ok(account.chatrooms.clone())
            .fold(state, move |XmppState { client, mut data }, muc_jid| {
                data.counter += 1;
                let id_muc_presence = format!("id_muc_presence{}", data.counter);
                let muc_presence = stanzas::make_muc_presence(
                    &id_muc_presence,
                    account2.jid.clone(),
                    muc_jid.1.clone(),
                );
                info!("Sending muc presence... {:?}", muc_presence);
                let account4 = account2.clone();
                use tokio::prelude::Sink;
                client
                    .send(Packet::Stanza(muc_presence))
                    .map_err(|e| {
                        error!("Error on send muc presence: {}", e);
                        account4
                    })
                    .and_then(|client| {
                        data.mucs.insert(muc_jid.0, muc_jid.1);
                        future::ok(XmppState { client, data })
                    })
            })
            .map(|state| XmppConnection {
                account: account3,
                state,
            })
    }
}

use xmpp_parsers::ping::Ping;

    let mut get_roster = Iq::from_get(Roster {
        items: vec![],
        ver: None,
    });
    get_roster.id = Some(id.to_string());
    get_roster.into()

    Iq::from_get(
        id,
        Roster {
            items: vec![],
            ver: None,
        },
    )
    .into()

    let mut add_roster = Iq::from_set(Roster {
        items: vec![Item {
            jid,
            name: None,
            subscription: xmpp_parsers::roster::Subscription::None,
            ask: xmpp_parsers::roster::Ask::None,
            groups: vec![],
        }],
        ver: None,
    });
    add_roster.id = Some(id.to_string());
    add_roster.into()

    Iq::from_set(
        id,
        Roster {
            items: vec![Item {
                jid,
                name: None,
                subscription: xmpp_parsers::roster::Subscription::None,
                ask: xmpp_parsers::roster::Ask::None,
                groups: vec![],
            }],
            ver: None,
        },
    )
    .into()

pub fn make_muc_presence_leave(from: xmpp_parsers::Jid, to: xmpp_parsers::Jid) -> Element {
    let mut presence = Presence::new(PresenceType::Unavailable);
    presence.from = Some(from);
    presence.to = Some(to);
    presence.into()
}
pub fn make_ping(id: &str, from: xmpp_parsers::Jid) -> Element {
    let mut ping = Iq::from_get(id, Ping);
    ping.to = Some(from.clone().into_domain_jid());
    ping.from = Some(from);
    ping.into()
}
pub fn make_pong(id: &str, from: xmpp_parsers::Jid, to: Option<xmpp_parsers::Jid>) -> Element {
    let mut pong = Iq::from_result(id, None as Option<Roster>);
    pong.from = Some(from);
    pong.to = to;
    pong.into()
}

    fn xmpp_processing(
        mut self,
        event: &Event,
    ) -> impl Future<Item = Self, Error = std::rc::Rc<config::Account>> {

    /// Returns false on error to disconnect
    fn xmpp_processing(&mut self, event: &Event) -> bool {

                use try_from::TryInto;
                if let Some(iq) = stanza.try_into().ok() as Option<xmpp_parsers::iq::Iq> {
                    if let Some(id) = iq.id {
                        if let Some((_, jid)) =
                            self.state.data.pending_add_roster_ids.remove_entry(&id)
                        {
                            if let xmpp_parsers::iq::IqType::Result(None) = iq.payload {
                                if self.state.data.roster.contains_key(&jid) {
                                    info!("Jid {} updated to roster", jid);
                                } else {
                                    info!("Jid {} added in roster", jid);
                                    self.state.data.roster.insert(
                                        jid.clone(),
                                        (
                                            xmpp_parsers::roster::Subscription::None,
                                            xmpp_parsers::roster::Ask::None,
                                        ),
                                    );
                                }
                                self.process_jid(&jid);

                use std::convert::TryInto;
                if let Some(iq) = stanza.clone().try_into().ok() as Option<xmpp_parsers::iq::Iq> {
                    if let Some((_, jid)) =
                        self.state.data.pending_add_roster_ids.remove_entry(&iq.id)
                    {
                        if let xmpp_parsers::iq::IqType::Result(None) = iq.payload {
                            if self.state.data.roster.contains_key(&jid) {
                                info!("Jid {} updated to roster", jid);

                                warn!(
                                    "Wrong payload when adding {} to roster: {:?}",
                                    jid, iq.payload

                                info!("Jid {} added in roster", jid);
                                self.state.data.roster.insert(
                                    jid.clone(),
                                    (
                                        xmpp_parsers::roster::Subscription::None,
                                        xmpp_parsers::roster::Ask::None,
                                    ),

                            self.process_jid(&jid);
                        } else {
                            warn!(
                                "Wrong payload when adding {} to roster: {:?}",
                                jid, iq.payload
                            );

                    if let xmpp_parsers::iq::IqType::Set(element) = iq.payload {
                        if let Some(roster) =
                            element.try_into().ok() as Option<xmpp_parsers::roster::Roster>
                        {
                            for i in roster.items {
                                if let Some(ref mut rdata) = self.state.data.roster.get_mut(&i.jid)
                                {
                                    info!("Update {} in roster", i.jid);
                                    rdata.0 = i.subscription;
                                    rdata.1 = i.ask;
                                } else {
                                    info!("Add {} to roster", i.jid);
                                    self.state
                                        .data
                                        .roster
                                        .insert(i.jid.clone(), (i.subscription, i.ask));

                    match iq.payload {
                        xmpp_parsers::iq::IqType::Set(element) => {
                            if let Some(roster) =
                                element.try_into().ok() as Option<xmpp_parsers::roster::Roster>
                            {
                                for i in roster.items {
                                    if let Some(ref mut rdata) =
                                        self.state.data.roster.get_mut(&i.jid)
                                    {
                                        info!("Update {} in roster", i.jid);
                                        rdata.0 = i.subscription;
                                        rdata.1 = i.ask;
                                    } else {
                                        info!("Add {} to roster", i.jid);
                                        self.state
                                            .data
                                            .roster
                                            .insert(i.jid.clone(), (i.subscription, i.ask));
                                    }
                                    self.process_jid(&i.jid);

                                self.process_jid(&i.jid);

                            }
                        }
                        xmpp_parsers::iq::IqType::Error(e) => {
                            error!("iq error: {:?}", e);
                            return false;
                        }
                        xmpp_parsers::iq::IqType::Get(element) => {
                            if let Some(_ping) =
                                element.try_into().ok() as Option<xmpp_parsers::ping::Ping>
                            {
                                let pong = stanzas::make_pong(
                                    &iq.id,
                                    self.state.client.jid.clone(),
                                    iq.from,
                                );
                                self.state.data.send_queue.push_back(pong);

                        _ => (), // ignore

                } else if let Some(_presence) =
                    stanza.try_into().ok() as Option<xmpp_parsers::presence::Presence>
                {
                    // to do something with presence

                future::ok(self)

                true

            Event::Online => future::ok(self),

            Event::Online => true,

                future::err(self.account)

                false

                                        let xmpp = XmppConnection {

                                        let mut xmpp = XmppConnection {

                                        Box::new(xmpp.xmpp_processing(&event).then(|r| match r {
                                            Ok(mut xmpp) => {
                                                match stop_condition(&mut xmpp, event) {
                                                    Ok(true) => future::ok(future::Loop::Break((
                                                        xmpp,
                                                        Ok(Either::A(b)),
                                                    ))),
                                                    Ok(false) => {
                                                        future::ok(future::Loop::Continue((
                                                            xmpp,
                                                            b,
                                                            stop_condition,
                                                        )))
                                                    }
                                                    Err(_e) => future::err((
                                                        xmpp.account,
                                                        Ok(Either::A(b)),
                                                    )),

                                        if xmpp.xmpp_processing(&event) {
                                            match stop_condition(&mut xmpp, event) {
                                                Ok(true) => future::ok(future::Loop::Break((
                                                    xmpp,
                                                    Ok(Either::A(b)),
                                                ))),
                                                Ok(false) => future::ok(future::Loop::Continue((
                                                    xmpp,
                                                    b,
                                                    stop_condition,
                                                ))),
                                                Err(_e) => {
                                                    future::err((xmpp.account, Ok(Either::A(b))))

                                            Err(account) => {
                                                future::err((account, Ok(Either::A(b))))
                                            }
                                        }))
                                            as Box<dyn Future<Item = _, Error = _>>

                                        } else {
                                            future::err((xmpp.account, Ok(Either::A(b))))
                                        }

                                        Box::new(future::err((account, Ok(Either::A(b)))))

                                        future::err((account, Ok(Either::A(b))))

                                    Box::new(if let Some(client) = a.into_inner() {

                                    if let Some(client) = a.into_inner() {

                                    })

                                    }

                                    Box::new(future::err((account, Ok(Either::A(b)))))

                                    future::err((account, Ok(Either::A(b))))

                                    Box::new(if let Some(client) = a.into_inner() {

                                    if let Some(client) = a.into_inner() {

                                    })

                                    }

            use try_from::TryInto;

            use std::convert::TryInto;

                    if let Some(id) = iq.id {
                        if id == id_init_roster {
                            match iq.payload {
                                xmpp_parsers::iq::IqType::Error(_e) => {
                                    error!("Get error instead of roster");
                                    Err(())
                                }
                                xmpp_parsers::iq::IqType::Result(Some(result)) => {
                                    match result.try_into()
                                        as Result<xmpp_parsers::roster::Roster, _>
                                    {
                                        Ok(roster) => {
                                            self.state.data.roster.clear();
                                            info!("Got first roster:");
                                            for i in roster.items {
                                                info!(" >>> {:?}", i);
                                                self.state
                                                    .data
                                                    .roster
                                                    .insert(i.jid, (i.subscription, i.ask));
                                            }
                                            Ok(true)

                    if iq.id == id_init_roster {
                        match iq.payload {
                            xmpp_parsers::iq::IqType::Error(_e) => {
                                error!("Get error instead of roster");
                                Err(())
                            }
                            xmpp_parsers::iq::IqType::Result(Some(result)) => {
                                match result.try_into() as Result<xmpp_parsers::roster::Roster, _> {
                                    Ok(roster) => {
                                        self.state.data.roster.clear();
                                        info!("Got first roster:");
                                        for i in roster.items {
                                            info!(" >>> {:?}", i);
                                            self.state
                                                .data
                                                .roster
                                                .insert(i.jid, (i.subscription, i.ask));

                                        Err(e) => {
                                            error!("Cann't parse roster: {}", e);
                                            Err(())
                                        }

                                        Ok(true)

                                }
                                _ => {
                                    error!("Unknown result of roster");
                                    Err(())

                                    Err(e) => {
                                        error!("Cann't parse roster: {}", e);
                                        Err(())
                                    }

                        } else {
                            Ok(false)

                            _ => {
                                error!("Unknown result of roster");
                                Err(())
                            }

                        error!("Iq stanza without id");
                        Err(())

                        Ok(false)

                            if s.name() == "presence"
                                && s.attr("from").map_or(false, |f| f == conn.account.jid)
                                && s.attr("to").map_or(false, |f| f == conn.account.jid)
                            {
                                Ok(true)
                            } else {
                                Ok(false)

                            use std::convert::TryInto;
                            match s.try_into() as Result<xmpp_parsers::presence::Presence, _> {
                                Ok(presence) => {
                                    Ok(presence.from.as_ref() == Some(&conn.state.client.jid))
                                }
                                Err(e) => {
                                    warn!("Not a self-presence: {}", e);
                                    Ok(false)
                                }

            }
            XmppCommand::Ping => {
                self.state.data.counter += 1;
                let id_ping = format!("id_ping{}", self.state.data.counter);
                let ping = stanzas::make_ping(&id_ping, self.state.client.jid.clone());
                self.state.data.send_queue.push_back(ping);

    fn shutdown(self) -> impl Future<Item = (), Error = failure::Error> {
        info!("Shutdown connection");
        let XmppConnection { account, state } = self;
        stream::iter_ok(
            state
                .data
                .mucs
                .values()
                .map(std::clone::Clone::clone)
                .collect::<Vec<_>>(),
        )
        .fold(state, move |XmppState { client, data }, muc_jid| {
            let muc_presence =
                stanzas::make_muc_presence_leave(account.jid.clone(), muc_jid.clone());
            info!("Sending muc leave presence... {:?}", muc_presence);
            use tokio::prelude::Sink;
            client
                .send(Packet::Stanza(muc_presence))
                .map_err(|e| {
                    error!("Error on send muc presence: {}", e);
                    e
                })
                .and_then(|client| future::ok(XmppState { client, data }))
        })
        .map(|_| ())
    }

    Ping,

                                future::err(format_err!("Command receiver is gone"))

                                error!("Command receiver is gone");
                                future::ok(future::Loop::Break(Some(conn)))

                                future::ok(future::Loop::Break(()))

                                future::ok(future::Loop::Break(Some(conn)))

                        Err(_) => future::err(format_err!("Command receiver is broken")),

                        Err(_) => {
                            error!("Command receiver is broken");
                            future::ok(future::Loop::Break(Some(conn)))
                        }

                                future::ok(future::Loop::Break(()))

                                future::ok(future::Loop::Break(None))

    .and_then(|opt_conn| {
        if let Some(conn) = opt_conn {
            Box::new(conn.shutdown()) as Box<dyn Future<Item = (), Error = _>>
        } else {
            Box::new(future::ok(()))
        }
    })

type Func<S, T, E> = dyn Fn(&mut S, E) -> T;
pub struct Processor<S: 'static, T: 'static, E: Clone + 'static> {
    processors: Vec<Box<Func<S, Option<T>, E>>>,
    default: &'static Func<S, T, E>,
}
impl<S: 'static, T: 'static, E: Clone + 'static> Processor<S, T, E> {
    pub fn new<F>(f: &'static F) -> Processor<S, T, E>
    where
        F: Fn(&mut S, E) -> T + 'static,
    {
        Processor {
            processors: vec![],
            default: f,
        }
    }
    pub fn register<F, A>(&mut self, f: &'static F)
    where
        F: Fn(&mut S, A) -> T + 'static,
        A: std::convert::TryFrom<E>,
    {
        self.processors.push(Box::new(move |s, e: E| {
            use std::convert::TryInto;
            (e.try_into().ok() as Option<A>).map(|a| f(s, a))
        }));
    }
    pub fn process(&self, s: &mut S, e: E) -> T {
        for processor in self.processors.iter() {
            match processor(s, e.clone()) {
                Some(t) => return t,
                None => continue,
            }
        }
        (*self.default)(s, e)
    }
}

type Func<S, T, E> = dyn Fn(&mut S, E) -> T;
pub struct Processor<S: 'static, T: 'static, E: Clone + 'static> {
    processors: Vec<Box<Func<S, Option<T>, E>>>,
    default: &'static Func<S, T, E>,
}
impl<S: 'static, T: 'static, E: Clone + 'static> Processor<S, T, E> {
    pub fn new<F>(f: &'static F) -> Processor<S, T, E>
    where
        F: Fn(&mut S, E) -> T + 'static,
    {
        Processor {
            processors: vec![],
            default: f,
        }
    }
    pub fn register<F, A>(&mut self, f: &'static F)
    where
        F: Fn(&mut S, A) -> T + 'static,
        A: std::convert::TryFrom<E>,
    {
        self.processors.push(Box::new(move |s, e: E| {
            use std::convert::TryInto;
            (e.try_into().ok() as Option<A>).map(|a| f(s, a))
        }));
    }
    pub fn process(&self, s: &mut S, e: E) -> T {
        for processor in self.processors.iter() {
            match processor(s, e.clone()) {
                Some(t) => return t,
                None => continue,
            }
        }
        (*self.default)(s, e)
    }
}

#![deny(deprecated)]
#![deny(missing_docs)]
#![deny(bare_trait_objects)]
//! XMPP client service
extern crate clap;
extern crate hyper;
#[macro_use]
extern crate log;
extern crate env_logger;
#[macro_use]
extern crate serde_derive;
extern crate tokio;
extern crate tokio_channel;
extern crate tokio_signal;
extern crate tokio_xmpp;
#[macro_use]
extern crate failure;
extern crate toml;
extern crate xmpp_parsers;
use hyper::{Body, Request, Response, Server};
use tokio::runtime::current_thread;
use tokio::runtime::Runtime;
use tokio::prelude::{Future, Sink, Stream};
mod config;
use crate::config::Config;
mod xmpp;
use crate::xmpp::{xmpp_process, XmppCommand};
mod stoppable_receiver;
use crate::stoppable_receiver::stop_receiver;
fn body_to_string(req: Request<Body>) -> impl Future<Item = String, Error = failure::Error> {
    req.into_body()
        .map_err(std::convert::Into::into)
        .fold(String::new(), |mut acc, ch| {
            std::str::from_utf8(&*ch).map(|s| {
                acc.push_str(s);
                acc
            })
        })
}
struct ServiceCmd {
    cmd_send: tokio_channel::mpsc::Sender<XmppCommand>,
}
impl hyper::service::Service for ServiceCmd {
    type ReqBody = Body;
    type ResBody = Body;
    type Error = failure::Error;
    type Future =
        Box<dyn Future<Item = Response<Self::ResBody>, Error = Self::Error> + Send + 'static>;
    fn call(&mut self, req: Request<Self::ReqBody>) -> Self::Future {
        let xmpp_to_opt = req.headers().get("X-XMPP-To");
        let xmpp_to_res: Result<xmpp_parsers::Jid, failure::Error> = xmpp_to_opt.map_or_else(
            || Err(format_err!("No X-XMPP-To header")),
            |xmpp_to| {
                std::str::from_utf8(xmpp_to.as_bytes())
                    .map_err(std::convert::Into::into)
                    .and_then(|s| std::str::FromStr::from_str(s).map_err(std::convert::Into::into))
            },
        );
        let xmpp_muc_opt = req
            .headers()
            .get("X-XMPP-Muc")
            .map(|h| h.to_str().map(std::string::ToString::to_string));
        match (xmpp_muc_opt, xmpp_to_res) {
            (None, Err(err)) => {
                warn!("Unknown destination: {}", err);
                Box::new(tokio::prelude::future::result(
                    Response::builder()
                        .status(hyper::StatusCode::BAD_REQUEST)
                        .body(Body::from(format!("Unknown destination: {}", err)))
                        .map_err(std::convert::Into::into),
                )) as Box<dyn Future<Item = _, Error = _> + Send + 'static>
            }
            (None, Ok(xmpp_to)) => {
                info!("Got request. Reading body...");
                let cmd_send = self.cmd_send.clone();
                Box::new(body_to_string(req).and_then(move |message: String| {
                    if !message.is_empty() {
                        Box::new(
                            cmd_send
                                .clone()
                                .send(XmppCommand::Chat { xmpp_to, message })
                                .then(|r| match r {
                                    Ok(_) => tokio::prelude::future::ok(Response::new(Body::from(
                                        "Accepted",
                                    ))),
                                    Err(e) => {
                                        error!("Command sent error: {}", e);
                                        tokio::prelude::future::result(
                                            Response::builder()
                                                .status(hyper::StatusCode::BAD_REQUEST)
                                                .body(Body::from(format!(
                                                    "Command sent error: {}",
                                                    e
                                                ))),
                                        )
                                    }
                                })
                                .map_err(std::convert::Into::into),
                        )
                    } else {
                        warn!("Empty message");
                        Box::new(tokio::prelude::future::result(
                            Response::builder()
                                .status(hyper::StatusCode::BAD_REQUEST)
                                .body(Body::from("Empty message"))
                                .map_err(std::convert::Into::into),
                        ))
                            as Box<dyn Future<Item = _, Error = _> + Send + 'static>
                    }
                })) as Box<dyn Future<Item = _, Error = _> + Send + 'static>
            }
            (Some(Ok(muc_id)), _) => {
                info!("Got MUC request. Reading body...");
                let cmd_send = self.cmd_send.clone();
                Box::new(body_to_string(req).and_then(move |message: String| {
                    if !message.is_empty() {
                        Box::new(
                            cmd_send
                                .clone()
                                .send(XmppCommand::Chatroom { muc_id, message })
                                .then(|r| match r {
                                    Ok(_) => tokio::prelude::future::ok(Response::new(Body::from(
                                        "Accepted",
                                    ))),
                                    Err(e) => {
                                        error!("Command sent error: {}", e);
                                        tokio::prelude::future::result(
                                            Response::builder()
                                                .status(hyper::StatusCode::BAD_REQUEST)
                                                .body(Body::from(format!(
                                                    "Command sent error: {}",
                                                    e
                                                ))),
                                        )
                                    }
                                })
                                .map_err(std::convert::Into::into),
                        )
                    } else {
                        warn!("Empty message");
                        Box::new(tokio::prelude::future::result(
                            Response::builder()
                                .status(hyper::StatusCode::BAD_REQUEST)
                                .body(Body::from("Empty message"))
                                .map_err(std::convert::Into::into),
                        ))
                            as Box<dyn Future<Item = _, Error = _> + Send + 'static>
                    }
                })) as Box<dyn Future<Item = _, Error = _> + Send + 'static>
            }
            (Some(Err(err)), _) => {
                warn!("Unknown MUC destination: {}", err);
                Box::new(tokio::prelude::future::result(
                    Response::builder()
                        .status(hyper::StatusCode::BAD_REQUEST)
                        .body(Body::from(format!("Unknown MUC destination: {}", err)))
                        .map_err(std::convert::Into::into),
                )) as Box<dyn Future<Item = _, Error = _> + Send + 'static>
            }
        }
    }
}
struct MakeServiceCmd {
    cmd_send: tokio_channel::mpsc::Sender<XmppCommand>,
}
impl<Ctx> hyper::service::MakeService<Ctx> for MakeServiceCmd {
    type ReqBody = Body;
    type ResBody = Body;
    type Error = failure::Error;
    type Service = ServiceCmd;
    type Future = tokio::prelude::future::FutureResult<ServiceCmd, Self::MakeError>;
    type MakeError = hyper::http::Error;
    fn make_service(&mut self, _ctx: Ctx) -> Self::Future {
        tokio::prelude::future::ok(ServiceCmd {
            cmd_send: self.cmd_send.clone(),
        })
    }
}

    println!("Hello, world!");

    env_logger::init();
    let args = clap::App::new("SendXMPP")
        .version("0.1.0")
        .author("O01eg <o01eg@yandex.ru>")
        .arg(
            clap::Arg::with_name("config")
                .short("c")
                .long("config")
                .value_name("CONFIG")
                .help("File with configuration")
                .takes_value(true),
        )
        .get_matches();
    let config = Config::read(args.value_of("config").expect("Mandatory option config"))
        .expect("Cann't read config file");
    use hyper::rt::{Future, Stream};
    let ctrl_c = tokio_signal::ctrl_c()
        .flatten_stream()
        .into_future()
        .map(|_| ())
        .map_err(|e| {
            error!("Cann't get CTRL+C signal: {}", e.0);
            e.0
        })
        .shared();
    let (cmd_send, cmd_recv) = tokio_channel::mpsc::channel(10);
    let http_server = Server::bind(&config.http)
        .serve(MakeServiceCmd {
            cmd_send: cmd_send.clone(),
        })
        .with_graceful_shutdown(ctrl_c.clone().map(|_| ()))
        .map_err(|e| error!("server error: {}", e));
    let mut rt = Runtime::new().expect("Cann't start tokio");
    if let Some(ping) = config.account.ping {
        let ping = tokio::timer::Interval::new_interval(std::time::Duration::from_secs(ping));
        rt.spawn(
            ping.map_err(|e| {
                error!("Ping error: {}", e);
            })
            .for_each(move |_| {
                cmd_send
                    .clone()
                    .send(XmppCommand::Ping)
                    .map_err(|e| {
                        error!("Ping command error: {}", e);
                    })
                    .map(|_| ())
            })
            .select(
                ctrl_c
                    .clone()
                    .map(|_| ())
                    .map_err(|e| error!("ping server error: {}", e)),
            )
            .map(|_| ())
            .map_err(|_| ()),
        );
    }
    rt.spawn(http_server);
    let xmpp_join = std::thread::spawn(move || -> Result<(), failure::Error> {
        let recv = stop_receiver(cmd_recv, ctrl_c.clone().map(|_| ()));
        // Launch single-threaded runtime
        let mut ctrt = current_thread::Runtime::new()?;
        let result = ctrt.block_on(xmpp_process(ctrl_c.clone(), recv, config.account));
        info!("Stopping xmpp thread");
        result
    });
    info!("Server started");
    rt.shutdown_on_idle().wait().expect("Shutdown error");
    info!("Server stopped");
    xmpp_join
        .join()
        .expect("Join xmpp thread")
        .expect("Result xmpp thread");

use std::collections::HashMap;

    #[serde(default, deserialize_with = "deserialize_jid_map")]
    pub chatrooms: HashMap<String, xmpp_parsers::Jid>,
    pub ping: Option<u64>,

}
fn deserialize_jid_map<'de, D>(
    deserializer: D,
) -> Result<HashMap<String, xmpp_parsers::Jid>, D::Error>
where
    D: serde::Deserializer<'de>,
{
    use serde::Deserialize;
    let s = HashMap::<String, String>::deserialize(deserializer)?;
    let size = s.len();
    s.into_iter()
        .map(|(k, v)| (k, std::str::FromStr::from_str(&v)))
        .take_while(|(_k, r)| r.is_ok())
        .fold(Ok(HashMap::with_capacity(size)), |res, (k, r)| match res {
            Ok(mut res) => match r {
                Ok(v) => {
                    res.insert(k, v);
                    Ok(res)
                }
                Err(e) => Err(e),
            },
            Err(e) => Err(e),
        })
        .map_err(serde::de::Error::custom)

### XMPP client daemon
#### Sending messages
```
curl http://localhost:8083/ -H "X-XMPP-To: some@domain.org" -d "Test"
```
#### Sending messages to MUC
```
curl http://localhost:8083/ -H "X-XMPP-Muc: smac" -d "Test"
```

edition = "2018"

tokio = "0.1"
tokio-channel = "0.1"
tokio-signal = "0.2"
tokio-xmpp = "1.0.0"
failure = "0.1.5"
hyper = "0.12"
toml = "0.5"
serde = "1.0"
serde_derive = "1.0"
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