csgowtf/src/lib/api/transformers/roundsTransformer.ts

import type { RoundsAPIResponse } from '$lib/types/api/RoundsAPIResponse';
import type { MatchRoundsResponse, RoundDetail, RoundStats, Match } from '$lib/types';

/**
 * Transform raw rounds API response into structured format
 * @param rawData - Raw API response
 * @param matchId - Match ID
 * @param match - Match data with player information
 * @returns Structured rounds data
 */
export function transformRoundsResponse(
	rawData: RoundsAPIResponse,
	matchId: string,
	match?: Match
): MatchRoundsResponse {
	const rounds: RoundDetail[] = [];

	// Create player ID to team mapping
	const playerTeamMap = new Map<string, number>();
	if (match?.players) {
		for (const player of match.players) {
			playerTeamMap.set(player.id, player.team_id);
		}
	}

	// Convert object keys to sorted round numbers
	const roundNumbers = Object.keys(rawData)
		.map(Number)
		.sort((a, b) => a - b);

	for (const roundNum of roundNumbers) {
		const roundData = rawData[String(roundNum)];
		if (!roundData) continue;

		const players: RoundStats[] = [];

		// Convert player data
		for (const [playerId, [bank, equipment, spent]] of Object.entries(roundData)) {
			players.push({
				round: roundNum + 1, // API uses 0-indexed, we use 1-indexed
				bank,
				equipment,
				spent,
				player_id: Number(playerId)
			});
		}

		rounds.push({
			round: roundNum + 1,
			winner: 0, // TODO: Determine winner from data if available
			win_reason: '', // TODO: Determine win reason if available
			players
		});
	}

	return {
		match_id: matchId,
		rounds
	};
}