/**
 * Health context for well-known OpenClaw metrics.
 *
 * When grafana_query returns a value for a known metric, this module
 * provides SRE-grade interpretive context: status, thresholds, and
 * a human-readable description. This lets the agent act as a virtual
 * SRE without memorizing operational thresholds.
 *
 * Thresholds are defined in the shared metric-definitions registry
 * (src/metric-definitions.ts) — single source of truth.
 */
import { type HealthDirection } from "../metric-definitions.js";
export type HealthStatus = "healthy" | "warning" | "critical";
export type { HealthDirection } from "../metric-definitions.js";
export interface HealthContext {
    status: HealthStatus;
    thresholds: {
        warning: number;
        critical: number;
    };
    description: string;
    direction: HealthDirection;
}
interface HealthRule {
    warning: number;
    critical: number;
    description: string;
    direction: HealthDirection;
}
/**
 * Extract a plain metric name from a PromQL expression.
 * Returns the name only for simple expressions (bare metric name,
 * optionally with label selectors). Complex expressions (rate, sum,
 * binary operators) return undefined — health context doesn't apply.
 */
export declare function extractMetricName(expr: string): string | undefined;
/**
 * Resolve the health rule for a PromQL expression, if the metric is well-known.
 * Extracts the plain metric name and looks up the rule once. Use this to avoid
 * re-parsing the same expression in a loop (e.g., per instant query result).
 */
export declare function getHealthRule(expr: string): HealthRule | undefined;
/**
 * Evaluate a value against a resolved health rule.
 * Use with `getHealthRule()` for per-result evaluation without re-parsing expr.
 */
export declare function evaluateHealthContext(rule: HealthRule, value: string): HealthContext | undefined;
/**
 * Get health context for a metric value, if the metric is well-known.
 * Returns undefined for unknown metrics or complex PromQL expressions.
 * Convenience wrapper over getHealthRule() + evaluateHealthContext().
 */
export declare function getHealthContext(expr: string, value: string): HealthContext | undefined;
/** Exported for testing. */
export declare const _HEALTH_RULES: Record<string, HealthRule>;