import { NextResponse } from "next/server";
import { handleApiError } from "@/app/api/_utils";
import { connectToDatabase } from "@/lib/db";
import { serialize } from "@/lib/serialize";
import { saveLineupSchema } from "@/lib/validators";
import { GameModel } from "@/models/Game";
import { LineupModel } from "@/models/Lineup";

export const runtime = "nodejs";
export const dynamic = "force-dynamic";

export async function GET(request: Request) {
  try {
    await connectToDatabase();
    const { searchParams } = new URL(request.url);
    const gameDate = searchParams.get("gameDate");
    const filter = gameDate ? { gameDate: new Date(gameDate) } : {};
    const lineups = await LineupModel.find(filter).sort({ gameDate: -1, lineupNumber: -1 }).lean();
    return NextResponse.json(serialize(lineups));
  } catch (error) {
    return handleApiError(error);
  }
}

export async function POST(request: Request) {
  try {
    await connectToDatabase();
    const payload = saveLineupSchema.parse(await request.json());
    const gameDate = new Date(payload.gameDate);
    const latestForDate = await LineupModel.findOne({ gameDate }).sort({ lineupNumber: -1 }).select("lineupNumber").lean();
    const lineupNumber = (latestForDate?.lineupNumber ?? 0) + 1;
    const lineupPayload = {
      gameDate,
      lineupNumber,
      playerIds: payload.playerIds,
      startingPitcherId: payload.startingPitcherId ?? null,
      battingOrder: payload.battingOrder,
      defensiveAssignments: payload.defensiveAssignments,
      bench: payload.bench,
      notes: payload.notes
    };

    const lineup = await LineupModel.create(lineupPayload);

    await GameModel.findOneAndUpdate(
      { gameDate: lineupPayload.gameDate },
      {
        gameDate: lineupPayload.gameDate,
        activePlayerIds: payload.playerIds,
        startingPitcherId: payload.startingPitcherId ?? null
      },
      { upsert: true, new: true }
    );

    return NextResponse.json(serialize(lineup.toObject()), { status: 201 });
  } catch (error) {
    return handleApiError(error);
  }
}