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// Copyright (c) 2023 xmpp-rs contributors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

use tokio_xmpp::connect::ServerConnector;
use tokio_xmpp::{
    parsers::{
        message::{Body, Message, MessageType},
        muc::user::MucUser,
    },
    BareJid, Error, Jid,
};

use crate::{Agent, RoomNick};

/// Send a private message to a given MUC room member.
///
/// Returns the generated message ID.
///
/// # Arguments
///
/// * `agent`:     The agent to use to send the message.
/// * `room`:      The JID of the room.
/// * `recipient`: The nickname of the recipient within the room.
/// * `type_`: The type of message to send.
///            For a message to a MUC room, this should be `MessageType::Groupchat`.
///            For a private message to a MUC room member or regular contact,
///            this should be `MessageType::Chat`.
/// * `lang`:  The language of the message. (See IETF RFC 5646)
/// * `text`:  The text of the message.
///
/// Returns the generated message ID, or an error if the message could not be sent.
pub async fn send_room_private_message<C: ServerConnector>(
    agent: &mut Agent<C>,
    room: BareJid,
    recipient: RoomNick,
    lang: &str,
    text: &str,
) -> Result<String, Error> {
    let recipient: Jid = room.with_resource_str(&recipient).unwrap().into();
    let mut message = Message::new(recipient).with_payload(MucUser::new());
    message.type_ = MessageType::Chat;
    message
        .bodies
        .insert(String::from(lang), Body(String::from(text)));
    agent.client.send_stanza(message.into()).await
}