crabtalk-runtime 0.0.21

Crabtalk agent runtime — execution loop, tool dispatch, and lifecycle hooks
Documentation 
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//! Conversation — pure working-context container.

use crate::ConversationHandle;
use std::time::Instant;
use wcore::{model::HistoryEntry, storage::ConversationMeta};

/// A conversation tied to a specific agent.
///
/// Pure working-context container. Persistence is delegated to the
/// Storage trait via the session handle.
#[derive(Debug, Clone)]
pub struct Conversation {
    /// Unique conversation identifier (monotonic counter, runtime-only).
    pub id: u64,
    /// Conversation history (the working context for the LLM).
    pub history: Vec<HistoryEntry>,
    /// Conversation title (set by the `set_title` tool).
    pub title: String,
    /// Accumulated active time in seconds.
    pub uptime_secs: u64,
    /// When this conversation was loaded/created in this process.
    pub created_at: Instant,
    /// Persistent conversation identity, assigned by the storage layer.
    /// `None` until the first persistence call — and remains `None` for
    /// tmp chats that never enter a topic.
    pub handle: Option<ConversationHandle>,
    /// Topic this conversation belongs to, if any. `None` = tmp chat
    /// (no storage, no resume). Set by `switch_topic`.
    pub topic: Option<String>,
}

impl Conversation {
    /// Create a new conversation with an empty history.
    pub fn new(id: u64) -> Self {
        Self {
            id,
            history: Vec::new(),
            title: String::new(),
            uptime_secs: 0,
            created_at: Instant::now(),
            handle: None,
            topic: None,
        }
    }

    /// Build a [`ConversationMeta`] snapshot from this conversation's
    /// current state.
    pub fn meta(&self, agent: &str, created_by: &str) -> ConversationMeta {
        ConversationMeta {
            agent: agent.to_owned(),
            created_by: created_by.to_owned(),
            created_at: chrono::Utc::now().to_rfc3339(),
            title: self.title.clone(),
            uptime_secs: self.uptime_secs,
            topic: self.topic.clone(),
        }
    }
}