import { NextResponse } from 'next/server';
import { PrismaClient } from '@prisma/client';

const prisma = new PrismaClient();

/**
 * POST /api/player-id/suggest
 * 
 * Tries to find a player ID based on recently updated states for a genre.
 * This helps synchronize player IDs across different domains (hoerdle.de and hördle.de).
 * 
 * Request body:
 * - genreKey: Genre key (e.g., "global", "Rock", "special:00725")
 * 
 * Returns:
 * - playerId: Suggested player ID (UUID) if found, null otherwise
 */
export async function POST(request: Request) {
    try {
        const body = await request.json();
        const { genreKey } = body;

        if (!genreKey || typeof genreKey !== 'string') {
            return NextResponse.json(
                { error: 'Missing or invalid genreKey' },
                { status: 400 }
            );
        }

        // Find the most recently updated player state for this genre
        // Look for states updated in the last 48 hours
        const cutoffDate = new Date();
        cutoffDate.setHours(cutoffDate.getHours() - 48);

        const recentState = await prisma.playerState.findFirst({
            where: {
                genreKey: genreKey,
                lastPlayed: {
                    gte: cutoffDate,
                },
            },
            orderBy: {
                lastPlayed: 'desc',
            },
        });

        if (recentState) {
            // Return the player ID from the most recent state
            return NextResponse.json({
                playerId: recentState.identifier,
                lastPlayed: recentState.lastPlayed,
            });
        }

        // No recent state found
        return NextResponse.json({
            playerId: null,
        });
    } catch (error) {
        console.error('[player-id/suggest] Error finding player ID:', error);
        return NextResponse.json(
            { error: 'Internal Server Error' },
            { status: 500 }
        );
    }
}