import type { Pattern } from "../../shared/value-objects/pattern.js";

interface AggregateOptions {
	minCount?: number;
	totalSessions?: number;
	noiseThreshold?: number;
}

export const aggregatePatterns = (
	patterns: Pattern[],
	options: AggregateOptions = {},
): Pattern[] => {
	const minCount = options.minCount ?? 3;
	const totalSessions = options.totalSessions ?? 0;
	const noiseThreshold = options.noiseThreshold ?? 0.8;

	return patterns.filter((p) => {
		// Filter below minimum count
		if (p.count < minCount) return false;

		// Filter framework noise
		if (totalSessions > 0 && p.sessions / totalSessions >= noiseThreshold) return false;

		return true;
	});
};