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

using Newtonsoft.Json;

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

using SpaceRace.Shared;

public class PlayerData {
    public Guid Id;
}

public class LapService {
    static string playerDataPath = Path.Combine(Application.persistentDataPath, "playerData.json");
    string _mapName;
    PlayerData _player;
    PbDTO _pb;

    public Lap PB;

    public LapService(string mapName) {
        _mapName = mapName;
        LoadPlayerData();
    }

    public IEnumerator GetPb() {
        string uri = $"localhost:40080/Pb?userId={_player.Id}&mapName={_mapName}";
        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("Received: " + req.downloadHandler.text);
                    SetPb(req.downloadHandler.text);
                    break;
            }
        }
    }

    PbDTO SetPb(string json) {
        PbDTO dto = JsonConvert.DeserializeObject<PbDTO>(json);
        _pb = dto;

        PB = new Lap {
            Map = _pb.Map,
            Sectors = dto.Sectors.Select((d, i) => new SectorTime { Sector = i + 1, Seconds = d }).ToList(),
        };

        return dto;
    }

    public IEnumerator PostLap(Lap lap) {
        LapDTO dto = new LapDTO {
            Id = Guid.NewGuid(),
            UserId = _player.Id,
            Map = _mapName,
            Time = lap.TotalTime,
            Sectors = lap.Sectors.Select(s => s.Seconds).ToList(),
            Created = DateTimeOffset.UtcNow,
        };

        Debug.Log(JsonConvert.SerializeObject(dto));

        using (UnityWebRequest req = UnityWebRequest.Post("localhost:40080/Lap", JsonConvert.SerializeObject(dto), "application/json")) {
            yield return req.SendWebRequest();

            if (req.result != UnityWebRequest.Result.Success) {
                Debug.Log(req.error);
            }

            Debug.Log($"posted lap {dto}");
        }
    }

    void LoadPlayerData() {
        try {
            string json = File.ReadAllText(playerDataPath);
            _player = JsonConvert.DeserializeObject<PlayerData>(json);
            Debug.Log($"Loaded player data {_player}");
        } catch {
            Debug.Log("No existing playerData.json");
            CreatePlayerData();
        }
    }

    PlayerData CreatePlayerData() {
        _player = new PlayerData { Id = Guid.NewGuid() };
        Debug.Log(JsonConvert.SerializeObject(_player));
        File.WriteAllText(playerDataPath, JsonConvert.SerializeObject(_player));
        return _player;
    }
}