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/*
* Copyright (c) 2026 Ankit Chaubey <ankitchaubey.dev@gmail.com>
* https://github.com/ankit-chaubey
*
* Project: ferogram
* Website: https://ferogram.dev
*
* Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
* https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
* <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
* This file may not be copied, modified, or distributed except according
* to those terms.
*/
//! Update entity extraction and chat/peer conversion helpers.
//!
//! This module lives in the top crate because it touches `tl-api` types
//! (`User`, `Chat`, `Peer`). Envelope/frame unwrapping itself now lives in
//! `ferogram-mtsender::mtp_sender::dispatch`. The transport-layer PFS bind
//! decoder (no tl-api dependency) lives in `ferogram-connect/src/pfs.rs`.
use ferogram_tl_types as tl;
/// Extract (users, chats) slices from any `Updates` variant.
///
/// Covers `Updates`, `UpdatesCombined`, and `UpdateShortChatMessage` /
/// `UpdateShortMessage` (which embed no entities; returns empty vecs).
/// Used to cache entities immediately after any RPC that returns `Updates`.
pub fn updates_entities(
updates: &tl::enums::Updates,
) -> (Vec<tl::enums::User>, Vec<tl::enums::Chat>) {
match updates {
tl::enums::Updates::Updates(u) => (u.users.clone(), u.chats.clone()),
tl::enums::Updates::Combined(u) => (u.users.clone(), u.chats.clone()),
_ => (Vec::new(), Vec::new()),
}
}
/// Convert a `Chat` enum variant to its corresponding `Peer`.
pub fn chat_to_peer(chat: &tl::enums::Chat) -> Option<tl::enums::Peer> {
match chat {
tl::enums::Chat::Channel(c) => Some(tl::enums::Peer::Channel(tl::types::PeerChannel {
channel_id: c.id,
})),
tl::enums::Chat::ChannelForbidden(c) => {
Some(tl::enums::Peer::Channel(tl::types::PeerChannel {
channel_id: c.id,
}))
}
tl::enums::Chat::Chat(c) => {
Some(tl::enums::Peer::Chat(tl::types::PeerChat { chat_id: c.id }))
}
tl::enums::Chat::Forbidden(c) => {
Some(tl::enums::Peer::Chat(tl::types::PeerChat { chat_id: c.id }))
}
tl::enums::Chat::Empty(_) => None,
// No `Peer::Community` variant exists (layer 228 didn't add one) -
// communities aren't addressable as a `Peer` at all.
tl::enums::Chat::Community(_) => None,
tl::enums::Chat::CommunityForbidden(_) => None,
}
}