import type { KnowledgeRepository } from '../repository/index.js';
import { ExtractionPipeline } from '../extraction/index.js';
import type { ResearchArtifact, ResearchResult, ResearchStep, ResearchStepResult, ResearchTask } from './research-task-types.js';
export interface ResearchExecutorAdapter {
    execute(step: ResearchStep, task: ResearchTask): Promise<ResearchStepResult>;
}
export interface ResearchExecutorOptions {
    adapter: ResearchExecutorAdapter;
    repository: KnowledgeRepository;
    extractionPipeline?: ExtractionPipeline;
    now?: () => Date;
}
/** FR-D02 AC6: Research task detail view */
export interface ResearchTaskDetail {
    task: ResearchTask;
    result: ResearchResult;
    steps: ResearchStepDetail[];
    artifacts: ResearchArtifact[];
    extractedEntryIds: string[];
    timeline: ResearchTimelineEvent[];
}
export interface ResearchStepDetail {
    step: ResearchStep;
    status: 'completed' | 'skipped';
    artifacts: ResearchArtifact[];
    apiCallsUsed: number;
}
export interface ResearchTimelineEvent {
    timestamp: Date;
    event: string;
    detail?: string;
}
export declare class ResearchExecutor {
    private readonly adapter;
    private readonly repository;
    private readonly extractionPipeline;
    private readonly now;
    private readonly resultHistory;
    private readonly taskRegistry;
    private readonly stepArtifacts;
    private readonly timelines;
    constructor(options: ResearchExecutorOptions);
    execute(task: ResearchTask): Promise<ResearchResult>;
    /**
     * FR-D02 AC5: Re-research a completed task.
     * Clears previous results for this task and re-executes.
     */
    reExecute(task: ResearchTask): Promise<ResearchResult>;
    /**
     * FR-D02 AC6: Get detailed view of a research task execution.
     */
    getTaskDetail(taskId: string): ResearchTaskDetail | null;
    private extractArtifact;
}
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