import type { CaptureCoverage, SkipReason } from '@cclabsnz/sf-core';
export interface CoverageInput {
    /** The manifest for the window, or `undefined` when none was found. */
    coverage: CaptureCoverage | undefined;
}
/** A source that was asked for and is not in the data. */
export interface MissingSource {
    source: string;
    reason: SkipReason | string;
}
export type CoverageState = 'complete' | 'incomplete' | 'unknown';
export interface CoverageAssessment {
    state: CoverageState;
    missing: MissingSource[];
    capturedSources: string[];
    /** The sentence that qualifies a row count. Never composed by the caller. */
    statement(rowCount: number): string;
    /** The multi-line header every output leads with. */
    banner(): string;
}
/**
 * Decide what the capture actually covers, and say so in words the reader cannot misread.
 *
 * This is the most important behaviour in the command. Every other part can be wrong and look
 * wrong; this one can be wrong and look like reassurance. "No rows matched" means either the
 * actor did nothing or nobody captured the hour — and those are opposite conclusions in an
 * investigation.
 *
 * The wording therefore belongs here, derived from state, rather than being left to whichever
 * renderer happens to be printing. A caller cannot accidentally report an unqualified absence,
 * because it never gets to phrase one.
 */
export declare function assessCoverage(input: CoverageInput): CoverageAssessment;
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