meerkat-contracts 0.3.3

Wire format contracts and capability registry for Meerkat
Documentation 
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//! Wire session types.

use serde::{Deserialize, Serialize};

use meerkat_core::{SessionId, SessionInfo, SessionSummary};

/// Canonical session info for wire protocol.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WireSessionInfo {
    pub session_id: SessionId,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub session_ref: Option<String>,
    pub created_at: u64,
    pub updated_at: u64,
    pub message_count: usize,
    pub is_active: bool,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub last_assistant_text: Option<String>,
}

impl From<SessionInfo> for WireSessionInfo {
    fn from(info: SessionInfo) -> Self {
        Self {
            session_id: info.session_id,
            session_ref: None,
            created_at: info
                .created_at
                .duration_since(std::time::UNIX_EPOCH)
                .map(|d| d.as_secs())
                .unwrap_or(0),
            updated_at: info
                .updated_at
                .duration_since(std::time::UNIX_EPOCH)
                .map(|d| d.as_secs())
                .unwrap_or(0),
            message_count: info.message_count,
            is_active: info.is_active,
            last_assistant_text: info.last_assistant_text,
        }
    }
}

/// Canonical session summary for wire protocol.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WireSessionSummary {
    pub session_id: SessionId,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub session_ref: Option<String>,
    pub created_at: u64,
    pub updated_at: u64,
    pub message_count: usize,
    pub total_tokens: u64,
    pub is_active: bool,
}

impl From<SessionSummary> for WireSessionSummary {
    fn from(summary: SessionSummary) -> Self {
        Self {
            session_id: summary.session_id,
            session_ref: None,
            created_at: summary
                .created_at
                .duration_since(std::time::UNIX_EPOCH)
                .map(|d| d.as_secs())
                .unwrap_or(0),
            updated_at: summary
                .updated_at
                .duration_since(std::time::UNIX_EPOCH)
                .map(|d| d.as_secs())
                .unwrap_or(0),
            message_count: summary.message_count,
            total_tokens: summary.total_tokens,
            is_active: summary.is_active,
        }
    }
}