import { NextRequest, NextResponse } from "next/server";
import { prisma } from "@/lib/prisma";

/**
 * GET /api/players
 * 
 * Get all players with their user associations
 * This is a public endpoint (no authentication required)
 * Supports search query parameter
 */
export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url)
    const search = searchParams.get('search') || ''
    const limit = parseInt(searchParams.get('limit') || '50')
    const offset = parseInt(searchParams.get('offset') || '0')

    const where: any = {}
    if (search) {
      where.name = { contains: search, mode: 'insensitive' }
    }

    const players = await prisma.player.findMany({
      where,
      include: {
        user: {
          select: {
            email: true,
          },
        },
      },
      orderBy: { currentElo: 'desc' },
      take: limit,
      skip: offset,
    });

    return NextResponse.json(players);
  } catch (error: unknown) {
    console.error("Error fetching players:", error);
    const message = error instanceof Error ? error.message : "Failed to fetch players";
    return NextResponse.json(
      { error: message },
      { status: 500 }
    );
  }
}

/**
 * POST /api/players
 * 
 * Create a new player
 * This is a public endpoint (no authentication required)
 * Returns 409 if player with same name already exists
 */
export async function POST(request: Request) {
  try {
    const body = await request.json();
    const { name } = body;

    // Validate name
    if (!name || typeof name !== 'string' || name.trim().length === 0) {
      return NextResponse.json(
        { error: "Player name is required" },
        { status: 400 }
      );
    }

    const trimmedName = name.trim();
    const normalizedName = trimmedName.toLowerCase();

    // Check if player with same name already exists
    const existingPlayer = await prisma.player.findUnique({
      where: { normalizedName },
    });

    if (existingPlayer) {
      return NextResponse.json(
        { error: `Player "${trimmedName}" already exists` },
        { status: 409 }
      );
    }

    // Create new player
    const newPlayer = await prisma.player.create({
      data: {
        name: trimmedName,
        normalizedName,
        currentElo: 1000,
        gamesPlayed: 0,
        wins: 0,
        losses: 0,
      },
    });

    return NextResponse.json(
      { success: true, player: newPlayer },
      { status: 201 }
    );
  } catch (error: unknown) {
    console.error("Error creating player:", error);
    const message = error instanceof Error ? error.message : "Failed to create player";
    return NextResponse.json(
      { error: message },
      { status: 500 }
    );
  }
}