import { Database } from "bun:sqlite";
/** Reduce a session id to the charset used for its DB filename and for echoing
 * the id into checkpoint content. Single source of truth for all three callers. */
export declare function sanitizeSessionId(id: string): string;
export declare class SessionStore {
    private db;
    private dbPath;
    /**
     * @param projectSlug Optional. When supplied, session DBs are scoped into a
     *   per-project subdirectory so a global dataDir cannot leak one project's
     *   checkpoints into another's. Appended (not inserted) so existing two-arg
     *   call sites keep working unchanged.
     */
    constructor(dataDir: string, sessionId: string, projectSlug?: string);
    connect(): Database;
    close(): void;
    getMeta(key: string): string | undefined;
    setMeta(key: string, value: string): void;
    getQualityCache(): QualityCacheRow | null;
    writeQualityCache(cache: Omit<QualityCacheRow, "id" | "updated_at">): void;
    recordRead(idx: number, path: string): void;
    recordWrite(idx: number, path: string): void;
    recordToolResult(idx: number, toolName: string, resultSize: number, isFailure: boolean): void;
    recordMessage(idx: number, role: string, textLength: number, isSubstantive: boolean): void;
    recordAgentDispatch(idx: number, promptSize: number, resultSize: number): void;
    getRecentReads(limit: number): Array<{
        idx: number;
        path: string;
    }>;
    getRecentWrites(limit: number): Array<{
        idx: number;
        path: string;
    }>;
    getRecentToolResults(limit: number): Array<{
        idx: number;
        tool_name: string;
        result_size: number;
        is_failure: number;
    }>;
    getRecentMessages(limit: number): Array<{
        idx: number;
        role: string;
        text_length: number;
        is_substantive: number;
    }>;
    getRecentAgentDispatches(limit: number): Array<{
        idx: number;
        prompt_size: number;
        result_size: number;
    }>;
    private safeParseInt;
    private atomicIncrement;
    /**
     * Cap each per-session signal table to its most recent `maxRows` rows.
     * Without this, a long session that never compacts grows these tables
     * unbounded. Table names are a fixed allowlist, never user input.
     */
    capSignalTables(maxRows: number): void;
    getCompactionCount(): number;
    incrementCompaction(): number;
    getToolCallCount(): number;
    incrementToolCallCount(): number;
    getOperationIndex(): number;
    incrementOperationIndex(): number;
    resetSignalAccumulators(): void;
}
export interface QualityCacheRow {
    id: number;
    resource_health: number | null;
    session_efficiency: number | null;
    fill_pct: number | null;
    compactions: number;
    tool_calls: number;
    last_nudge_time: number;
    nudge_count: number;
    data: string | null;
    updated_at: number;
}
//# sourceMappingURL=session-store.d.ts.map