Struct SessionResumeInfo 

pub struct SessionResumeInfo {
    pub is_resume: bool,
    pub prior_message_count: usize,
    pub prior_turn_count: usize,
    pub last_active: Option<String>,
}

Presentation-only summary of a conversation-session’s prior state, computed at hydration.

Carries no full message vector — expansion is pulled lazily by /history, never eagerly (spec-068 §13.3).

Fields

is_resume: bool

Whether this hydration reconstructed a non-empty prior conversation (§13.4).

prior_message_count: usize

Count of non-system messages in the reconstructed stream.

prior_turn_count: usize

Approximate number of turns (count of user messages in the reconstructed stream).

last_active: Option<String>

Last-active timestamp, formatted for display (e.g. "2h ago"), when known.

Implementations

impl SessionResumeInfo

pub fn from_messages( messages: &[Message], last_active_raw: Option<&str>, ) -> Self

Compute resume info from an already-reconstructed message stream.

is_resume is evaluated against the raw message stream — at least one non-system message (User, Assistant, or a tool-bearing message) makes this true, even when the only assistant message is tool-use-only with no visible text (spec-068 §13.4, AC-17). This must never be computed against a display-filtered/visible-text-only turn count — that would false-negative a session interrupted mid-tool-loop as fresh.

Examples

use zeph_core::session_resume::SessionResumeInfo;
use zeph_llm::provider::{Message, Role};

let messages = vec![Message::from_legacy(Role::System, "system prompt")];
let info = SessionResumeInfo::from_messages(&messages, None);
assert!(!info.is_resume, "system-prompt-only history is fresh, not a resume");

pub fn banner_text(&self) -> Option<String>

Render the neutral CLI/TUI banner line (spec-068 §13.5).

Carries no interrupted/clean-exit qualifier in v1 (§13.10). Returns None when is_resume is false — callers must not render anything for a fresh conversation (AC-16).

Trait Implementations

impl Clone for SessionResumeInfo

fn clone(&self) -> SessionResumeInfo

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SessionResumeInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.