import { NextRequest, NextResponse } from "next/server";
import { randomUUID } from "crypto";
import clientPromise from "./mongodb";
import { auth } from "./auth";

const DB = "dndextended";

export async function listContent(collection: string, req: NextRequest) {
  const session = await auth();
  if (!session) return NextResponse.json({ error: "Not Authenticated" }, { status: 401 });

  const userId = session.user.id;
  const url = new URL(req.url);
  const scope = url.searchParams.get("scope") ?? "all";

  const filter =
    scope === "mine"
      ? { creatorId: userId }
      : scope === "public"
      ? { visibility: "public" }
      : { $or: [{ visibility: "public" }, { creatorId: userId }] };

  const client = await clientPromise;
  const results = await client.db(DB).collection(collection).find(filter).toArray();
  return NextResponse.json({ results });
}

export async function createContent(collection: string, req: NextRequest) {
  const session = await auth();
  if (!session) return NextResponse.json({ error: "Not Authenticated" }, { status: 401 });

  const userId = session.user.id;
  const body = await req.json();

  if (!body || typeof body !== "object") {
    return NextResponse.json({ error: "Invalid body" }, { status: 400 });
  }
  if (!body.name || typeof body.name !== "string") {
    return NextResponse.json({ error: "name required" }, { status: 400 });
  }

  const isAdmin = session.user.isAdmin === true;
  const requestedPublic = body.visibility === "public";
  const VALID_RULESETS = ["5e", "5.5e", "legacy", "homebrew"];
  const requestedRuleset = VALID_RULESETS.includes(body.ruleset) ? body.ruleset : "5e";
  const doc = {
    ...body,
    id: body.id ?? randomUUID(),
    creatorId: userId,
    visibility: requestedPublic && isAdmin ? "public" : "private",
    ruleset: isAdmin ? requestedRuleset : "homebrew",
    createdAt: new Date().toISOString(),
  };

  const client = await clientPromise;
  await client.db(DB).collection(collection).insertOne(doc);
  return NextResponse.json({ result: doc }, { status: 201 });
}