import type { IncomeAnalytics } from "@/entities/income";

type IncomeDisplayModel = {
	entries: { key: string; operation: IncomeAnalytics["entries"][number] }[];
};

function toIncomeDisplayModel(
	analytics: IncomeAnalytics,
): IncomeDisplayModel {
	const entries: IncomeDisplayModel["entries"] = [];
	const occurrences = new Map<string, number>();

	for (const entry of analytics.entries) {
		const occurrenceKey = JSON.stringify([entry.instrumentKey, entry.id]);
		const occurrence = occurrences.get(occurrenceKey) ?? 0;
		occurrences.set(occurrenceKey, occurrence + 1);
		entries.push({
			key: JSON.stringify([
				entry.instrumentKey,
				entry.id,
				occurrence,
				entry.logoName,
			]),
			operation: entry,
		});
	}

	return { entries };
}

export { type IncomeDisplayModel, toIncomeDisplayModel };