import type { Database } from "bun:sqlite";
import type { ApiPrincipal } from "./types.js";
import type { ExecutionGrant, ExecutionGrantPolicy } from "../lib/execution-grants.js";
export interface ExecutionGrantStore {
    get(principal: ApiPrincipal, profileId: string, revision?: string): Promise<ExecutionGrantPolicy | null>;
    /** Atomically change the current revision and append immutable history. Null is a CAS conflict. */
    save(principal: ApiPrincipal, profileId: string, grants: ExecutionGrant[], expected: string | null): Promise<ExecutionGrantPolicy | null>;
}
type Row = Record<string, unknown>;
export declare class MemoryExecutionGrantStore implements ExecutionGrantStore {
    private current;
    private history;
    get(p: ApiPrincipal, id: string, revision?: string): Promise<ExecutionGrantPolicy | null>;
    save(p: ApiPrincipal, id: string, grants: ExecutionGrant[], expected: string | null): Promise<ExecutionGrantPolicy | null>;
}
export declare class SqliteExecutionGrantStore implements ExecutionGrantStore {
    private db;
    constructor(db: Database);
    get(p: ApiPrincipal, id: string, revision?: string): Promise<ExecutionGrantPolicy | null>;
    save(p: ApiPrincipal, id: string, grants: ExecutionGrant[], expected: string | null): Promise<ExecutionGrantPolicy | null>;
}
type Sql = (strings: TemplateStringsArray, ...values: unknown[]) => Promise<Row[]>;
export declare class PostgresExecutionGrantStore implements ExecutionGrantStore {
    private sql;
    constructor(sql: Sql);
    get(p: ApiPrincipal, id: string, revision?: string): Promise<ExecutionGrantPolicy | null>;
    save(p: ApiPrincipal, id: string, grants: ExecutionGrant[], expected: string | null): Promise<ExecutionGrantPolicy | null>;
}
export {};