import type { ChatMessage, ProviderId, ReasoningPreference } from "../../types.js";
import type { SessionPlan } from "../../store/plan.js";
import type { PersistedContextUsage } from "../../store/history.js";
import type { PreviousTurnSignal } from "../../agent/continue-orient.js";
import type { TranscriptItem } from "./transcript-item.js";
export interface SaveSessionOptions {
    readonly sessionId?: string | undefined;
    readonly writerGeneration?: string | undefined;
    readonly revision?: number | undefined;
    readonly name?: string | undefined;
    readonly transcript?: readonly TranscriptItem[] | undefined;
    readonly contextUsage?: PersistedContextUsage | undefined;
    readonly previousTurn?: PreviousTurnSignal | null | undefined;
    readonly provider?: ProviderId | undefined;
    readonly model?: string | undefined;
    readonly thinking?: ReasoningPreference | undefined;
}
export interface PersistencePort {
    saveSession(messages: readonly ChatMessage[], options?: SaveSessionOptions): Promise<void>;
    loadPlan(sessionId: string): Promise<SessionPlan | undefined>;
    savePlan(plan: SessionPlan): Promise<void>;
    mutatePlan?(sessionId: string, reducer: (draft: SessionPlan) => boolean | void): Promise<{
        ok: boolean;
        plan?: SessionPlan | undefined;
    }>;
    deletePlan(sessionId: string): Promise<void>;
}