import { type EditOutcome, type EditSource } from './genAiAttributes';
import type { IOTelService } from './otelService';
/**
 * Pre-configured OTel GenAI metric instruments.
 * All methods are static to avoid per-call allocations (aligned with gemini-cli pattern).
 */
export declare class GenAiMetrics {
    static recordOperationDuration(otel: IOTelService, durationSec: number, attrs: {
        operationName: string;
        providerName: string;
        requestModel: string;
        responseModel?: string;
        serverAddress?: string;
        serverPort?: number;
        errorType?: string;
    }): void;
    static recordTokenUsage(otel: IOTelService, tokenCount: number, tokenType: 'input' | 'output', attrs: {
        operationName: string;
        providerName: string;
        requestModel: string;
        responseModel?: string;
        serverAddress?: string;
    }): void;
    static recordToolCallCount(otel: IOTelService, toolName: string, success: boolean): void;
    static recordToolCallDuration(otel: IOTelService, toolName: string, durationMs: number): void;
    static recordAgentDuration(otel: IOTelService, agentName: string, durationSec: number): void;
    static recordAgentTurnCount(otel: IOTelService, agentName: string, turnCount: number): void;
    static recordTimeToFirstToken(otel: IOTelService, model: string, ttftSec: number): void;
    /**
     * GenAI-convention time-to-first-chunk histogram (seconds). Emitted for streaming
     * responses alongside the legacy `copilot_chat.time_to_first_token` metric.
     */
    static recordTimeToFirstChunk(otel: IOTelService, ttfcSec: number, attrs: {
        operationName: string;
        providerName: string;
        requestModel: string;
        responseModel?: string;
    }): void;
    /**
     * GenAI-convention inter-chunk latency histogram (seconds). Recorded once per
     * streamed output chunk after the first, measuring the gap since the prior chunk.
     */
    static recordTimePerOutputChunk(otel: IOTelService, interChunkSec: number, attrs: {
        operationName: string;
        providerName: string;
        requestModel: string;
        responseModel?: string;
    }): void;
    static incrementSessionCount(otel: IOTelService): void;
    /** Accept/reject counter for inline chat and chat editing edits */
    static recordEditAcceptance(otel: IOTelService, source: EditSource, outcome: EditOutcome, languageId?: string): void;
    /** File-level chat editing session outcome (accepted/rejected/saved) */
    static recordChatEditOutcome(otel: IOTelService, source: EditSource, outcome: EditOutcome, languageId?: string, hasRemainingEdits?: boolean): void;
    /** 4-gram text similarity survival score */
    static recordEditSurvivalFourGram(otel: IOTelService, source: EditSource, score: number, timeDelayMs: number): void;
    /** No-revert survival score */
    static recordEditSurvivalNoRevert(otel: IOTelService, source: EditSource, score: number, timeDelayMs: number): void;
    /** Lines of code added/removed by accepted agent edits */
    static incrementLinesOfCode(otel: IOTelService, type: 'added' | 'removed', languageId: string | undefined, count: number): void;
    static incrementUserActionCount(otel: IOTelService, action: string): void;
    static incrementUserFeedbackCount(otel: IOTelService, rating: string): void;
    static incrementAgentEditResponseCount(otel: IOTelService, outcome: string): void;
    static incrementAgentSummarizationCount(otel: IOTelService, outcome: string): void;
    static incrementPullRequestCount(otel: IOTelService): void;
    static incrementCloudSessionCount(otel: IOTelService, partnerAgent: string): void;
    /**
     * Records a cloud task operation outcome and, when provided, its duration.
     */
    static recordCloudOperation(otel: IOTelService, operation: string, success: boolean, durationMs?: number): void;
    static incrementCloudError(otel: IOTelService, operation: string, errorType: string): void;
}
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