import { usePrisma } from "../../utils/prisma";
import { getProfile } from "../../db/profile";

const MEMORY_EMOJIS = ["🛡️", "💪", "🌟", "🧠", "🌊", "🎯", "🌱", "🔑"];

function shuffle<T>(arr: T[]): T[] {
  const a = [...arr];
  for (let i = a.length - 1; i > 0; i--) {
    const j = Math.floor(Math.random() * (i + 1));
    const tmp = a[i]!;
    a[i] = a[j]!;
    a[j] = tmp;
  }
  return a;
}

export default defineEventHandler(async (event) => {
  const user = await requireUser(event);
  const db = usePrisma();

  const profile = await getProfile(user.id);
  const name = profile?.nickname || profile?.username || "Anonym";

  const pairs = shuffle([...MEMORY_EMOJIS, ...MEMORY_EMOJIS]);
  const memoryState = {
    cards: pairs.map((emoji: string, id: number) => ({
      id,
      emoji,
      matchedBy: null,
    })),
    flipped: [] as number[],
    scores: { X: 0, O: 0 },
    mismatchRevealed: false,
  };

  const challenge = await db.gameChallenge.create({
    data: {
      challengerId: user.id,
      challengerName: name,
      gameType: "memory",
      memoryState,
    },
  });

  const post = await db.communityPost.create({
    data: {
      userId: user.id,
      category: "challenge",
      content: `${name} sucht einen Gegner für Memory! Wer nimmt die Challenge an?`,
      isAnonymous: false,
      isModerated: false,
      challengeId: challenge.id,
    },
  });

  await db.gameChallenge.update({
    where: { id: challenge.id },
    data: { postId: post.id },
  });

  return { challengeId: challenge.id };
});