import { GameRole, IPlayer } from "../types";

/**
 * Parses the role info response and sets each player's `role`.
 * Players not in any role fall back to `null`.
 * @param roleInfoResponse The raw response string
 * @param players List of currently connected players
 * @returns Object containing updated player list
 */
export function parseRoleInfo(
  roleInfoResponse: string,
  players: IPlayer[] = []
): { players: IPlayer[] } {
  const lines = roleInfoResponse.split(/\r?\n/);
  const roleMap: Record<string, string[]> = {};
  let currentRole: string | null = null;

  for (const line of lines) {
    const trimmed = line.trim();
    if (!trimmed) continue;

    if (/^[A-Z][A-Za-z]*$/.test(trimmed)) {
      currentRole = trimmed;
      if (!roleMap[currentRole]) roleMap[currentRole] = [];
    } else if (currentRole) {
      roleMap[currentRole].push(trimmed);
    }
  }

  for (const role in roleMap) {
    roleMap[role] = Array.from(new Set(roleMap[role]));
  }

  players.forEach((player) => {
    player.role = null;
  });

  for (const role in roleMap) {
    for (const ign of roleMap[role]) {
      const player = players.find((p) => p.ign === ign);
      if (player) {
        player.role = role as GameRole;
      }
    }
  }

  return { players };
}