spacerace/Assets/Src/LapStorage.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;

using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UIElements;

[Serializable]
public class PlayerData {
    public string Id;
}

public class LapDTO {
    public DateTimeOffset Created  { get; set; }
    public Guid Id                 { get; set; }
    public Guid UserId             { get; set; }
    public string Map              { get; set; }
    public double Time             { get; set; }
}

public class LapFetchService {
    static string playerDataPath = Path.Combine(Application.persistentDataPath, "playerData.json");
    string _mapName;
    PlayerData player;

    public LapFetchService(string mapName) {
        _mapName = mapName;
        try {
            string json = File.ReadAllText(playerDataPath);
            JsonUtility.FromJsonOverwrite(json, player);
        } catch {
            Debug.Log("No existing playerData.json");
            CreatePlayerData();
        }
    }

    public IEnumerator GetPb() {
        string uri = $"localhost:40080/Pb?userId={player.Id}&mapName={_mapName}";
        Debug.Log(uri);
        using (UnityWebRequest req = UnityWebRequest.Get(uri)) {
            yield return req.SendWebRequest();

            switch (req.result) {
                case UnityWebRequest.Result.ConnectionError:
                case UnityWebRequest.Result.DataProcessingError:
                    Debug.LogError("Error: " + req.error);
                    break;
                case UnityWebRequest.Result.ProtocolError:
                    Debug.LogError("HTTP Error: " + req.error);
                    break;
                case UnityWebRequest.Result.Success:
                    Debug.Log("nReceived: " + req.downloadHandler.text);
                    break;
            }
        }
    }

    // laps.count
    public static int NumberOfCompletions() { return 0; }

    // finds your PB in all completions
    public static int Position() { return 1; }

    public static void PersistLap(Lap lap) {
        Debug.Log(JsonUtility.ToJson(lap));
    }

    PlayerData CreatePlayerData() {
        player = new PlayerData { Id = Guid.NewGuid().ToString() };
        Debug.Log(player);
        Debug.Log(JsonUtility.ToJson(player));
        File.WriteAllText(playerDataPath, JsonUtility.ToJson(player));
        return player;
    }
}