import { randomUUID } from "crypto";
import * as shapeManager from "./shapeManager";
import type { WasmConnection, Diff } from "./types";
import type { Shape } from "../js-land/types";

const mockShapeObject1 = {
  type: "Person",
  name: "Bob",
  address: {
    street: "First street",
    houseNumber: "15",
  },
  hasChildren: true,
  numberOfHouses: 0,
};
const mockShapeObject2 = {
  type: "Cat",
  name: "Niko's cat",
  age: 12,
  numberOfHomes: 3,
  address: {
    street: "Niko's street",
    compartment: 2,
  },
};

export default async function handleShapeRequest(
  shape: Shape,
  callback: (diff: Diff, connectionId: WasmConnection["id"]) => void
): Promise<{
  connectionId: string;
  shapeObject: object;
}> {
  const connection: WasmConnection = {
    id: randomUUID(),
    shape,
    // Create a deep copy to prevent accidental by-reference changes.
    state: JSON.parse(
      JSON.stringify(shape === "Shape1" ? mockShapeObject1 : mockShapeObject2)
    ),
    callback,
  };

  shapeManager.connections.set(connection.id, connection);

  return {
    connectionId: connection.id,
    shapeObject: connection.state,
  };
}