codetether-agent 4.7.0-a-002.4

A2A-native AI coding agent for the CodeTether ecosystem
Documentation 
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//! Text and thinking stream events.

use crate::tui::app::state::App;
use crate::tui::app::text::truncate_preview;
use crate::tui::chat::message::{ChatMessage, MessageType};

pub(super) fn chunk(app: &mut App, chunk: String) {
    if app.state.chat_auto_follow {
        app.state.scroll_to_bottom();
    }
    app.state.note_text_token();
    let chunk_len = chunk.len();
    app.state.streaming_text = bounded_chunk(chunk);
    app.state.record_streaming_chars(chunk_len);
}

pub(super) fn complete(app: &mut App, text: String) {
    app.state.note_text_token();
    app.state.streaming_text.clear();
    app.state
        .messages
        .push(ChatMessage::new(MessageType::Assistant, text));
    app.state.status = "Assistant replied".to_string();
    if app.state.chat_auto_follow {
        app.state.scroll_to_bottom();
    }
}

pub(super) fn thinking_complete(app: &mut App, text: String) {
    if text.is_empty() {
        return;
    }
    app.state.reset_tool_preview_scroll();
    app.state.messages.push(ChatMessage::new(
        MessageType::Thinking(text.clone()),
        truncate_preview(&text, 600),
    ));
    if app.state.chat_auto_follow {
        app.state.scroll_to_bottom();
    }
}

fn bounded_chunk(chunk: String) -> String {
    if chunk.len() <= crate::tui::constants::MAX_STREAMING_TEXT_BYTES {
        return chunk;
    }
    let mut text =
        crate::util::truncate_bytes_safe(&chunk, crate::tui::constants::MAX_STREAMING_TEXT_BYTES)
            .to_string();
    text.push_str(" …[truncated]");
    text
}