import { AppLoggingService } from "../../../core/logging/services/logging.service";
import { TracingService } from "../../../core/tracing/services/tracing.service";
import { Community } from "../../../foundations/community/entities/community.entity";
import { FollowUpAnswer } from "../contexts/drift.context";
import { CommunitySearchNodeService } from "../nodes/community.search.node.service";
import { FollowUpNodeService } from "../nodes/followup.node.service";
import { HydeNodeService } from "../nodes/hyde.node.service";
import { PrimerAnswerNodeService } from "../nodes/primer.answer.node.service";
import { SynthesisNodeService } from "../nodes/synthesis.node.service";
import { CallerAttributionState } from "../../common/usage-attribution";
export interface DriftSearchResult {
    answer: string;
    matchedCommunities: Community[];
    followUpAnswers: FollowUpAnswer[];
    initialAnswer: string;
    confidence: number;
    hydeEmbedding: number[];
}
export interface DriftConfig {
    primerTopK?: number;
    followUpDepth?: number;
}
export declare class DriftSearchService {
    private readonly hydeNode;
    private readonly communitySearchNode;
    private readonly primerAnswerNode;
    private readonly followUpNode;
    private readonly synthesisNode;
    private readonly logger;
    private readonly tracer;
    constructor(hydeNode: HydeNodeService, communitySearchNode: CommunitySearchNodeService, primerAnswerNode: PrimerAnswerNodeService, followUpNode: FollowUpNodeService, synthesisNode: SynthesisNodeService, logger: AppLoggingService, tracer: TracingService);
    /**
     * Run full DRIFT search workflow using LangGraph StateGraph:
     * 1. HyDE: Generate hypothetical document embedding
     * 2. Community Search: Vector search against community summaries
     * 3. Primer Answer: Generate initial answer + follow-up questions
     * 4. Follow-up: Process follow-up questions iteratively
     * 5. Synthesis: Combine all answers into final response
     */
    search(params: {
        question: string;
        config?: DriftConfig;
        /**
         * Cost attribution INHERITED from the calling agent. DRIFT is a sub-agent —
         * it bills the caller's ledger category against the caller's entity, and
         * owns neither. Optional, so existing consumers are unaffected.
         */
        attribution?: CallerAttributionState;
    }): Promise<DriftSearchResult>;
    /**
     * Quick search - just HyDE + community search + primer answer (no follow-ups)
     * Useful for when you want fast results
     */
    quickSearch(params: {
        question: string;
        topK?: number;
        /** Cost attribution INHERITED from the calling agent — see {@link search}. */
        attribution?: CallerAttributionState;
    }): Promise<DriftSearchResult>;
}
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