using System;
using System.Collections;
using System.Collections.Generic;
using Newtonsoft.Json;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.Networking;

/// <summary>
/// 后端对接专用
/// </summary>
public class BackendNetManager : MonoBehaviour
{
  public static BackendNetManager Instance;

  // ==================================================

  private void Awake() => Instance = this;
  private void Start() => Init();

  // private void Update()
  // {
  //   if (Input.GetKeyUp(KeyCode.U))
  //   {
  //     string testPath = @"D:\2024-06-03-21-28-17.png";
  //     UploadPhoto2Backend(ToneTuneToolkit.Media.TextureProcessor.ReadTexture(testPath));
  //   }
  // }

  // ==================================================

  private void Init()
  {
    GetStartupQR();
    return;
  }

  // ==================================================
  #region 获取启动QR码
  public event UnityAction<string> OnGetStartupInfoComplete;
  public StartupQRResponse QRData;

  private const string qrURL = "https://open.skyelook.com/api/longine_gz/startQr";
  private const string deviceCode = "Test_001";
  public void GetStartupQR()
  {
    StartCoroutine("GetStartupQRAction");
    return;
  }
  private IEnumerator GetStartupQRAction()
  {
    WWWForm wwwForm = new WWWForm();
    wwwForm.AddField("device_code", deviceCode);

    using (UnityWebRequest www = UnityWebRequest.Post(qrURL, wwwForm)) // 获取二维码链接
    {
      // www.SetRequestHeader("Content-Type", "multipart/form-data"); // 永远永远不要用这个
      www.SetRequestHeader("Content-Type", "application/x-www-form-urlencoded");
      DownloadHandler downloadHandler = new DownloadHandlerBuffer();
      www.downloadHandler = downloadHandler;
      yield return www.SendWebRequest();

      if (www.result != UnityWebRequest.Result.Success)
      {
        Debug.Log($"{www.error}...<color=red>[ER]</color>");
        yield break;
      }
      else
      {
        Debug.Log($"QRCode Json :\n{www.downloadHandler.text}...<color=green>[OK]</color>");
        QRData = JsonConvert.DeserializeObject<StartupQRResponse>(www.downloadHandler.text.ToString());

        if (OnGetStartupInfoComplete != null)
        {
          OnGetStartupInfoComplete(QRData.data.start_code);
        }
        Debug.Log("QRCode Json...<color=green>[OK]</color>");
      }
    }

    // using (UnityWebRequest www = UnityWebRequestTexture.GetTexture(QRData.data.qr_url)) // 获取二维码
    // {
    //   yield return www.SendWebRequest();
    //   if (www.result != UnityWebRequest.Result.Success)
    //   {
    //     Debug.Log($"{www.error}...<color=red>[ER]</color>");
    //     yield break;
    //   }
    //   else
    //   {
    //     if (OnGetStartupQRComplete != null)
    //     {
    //       OnGetStartupQRComplete(DownloadHandlerTexture.GetContent(www));
    //     }
    //     Debug.Log("QRCode Image...<color=green>[OK]</color>");
    //     StartCoroutine("QueryUserStatus"); // 启动轮询
    //   }
    // }
    yield break;
  }

  [Serializable]
  public class StartupQRResponse
  {
    public int code;
    public string message;
    public StartupQRData data;
  }
  [Serializable]
  public class StartupQRData
  {
    public string start_code;
    public string qr_url;
  }
  #endregion

  // ==================================================
  #region 轮询是否有玩家在玩
  // public event UnityAction OnUserActive;
  // public StatusResponse StatusData;

  // private const string statusURL = "https://open.skyelook.com/api/longine_gz/startStatus";
  // private IEnumerator QueryUserStatus()
  // {
  //   WWWForm wwwForm = new WWWForm();
  //   wwwForm.AddField("device_code", deviceCode);
  //   wwwForm.AddField("start_code", QRData.data.start_code);

  //   using (UnityWebRequest www = UnityWebRequest.Post(statusURL, wwwForm))
  //   {
  //     www.SetRequestHeader("Content-Type", "application/x-www-form-urlencoded");
  //     www.downloadHandler = new DownloadHandlerBuffer();
  //     yield return www.SendWebRequest();
  //     if (www.result != UnityWebRequest.Result.Success)
  //     {
  //       Debug.Log($"{www.error}...<color=red>[ER]</color>");
  //       yield break;
  //     }
  //     else
  //     {
  //       StatusData = JsonConvert.DeserializeObject<StatusResponse>(www.downloadHandler.text);
  //       // Debug.Log($"{www.downloadHandler.text}...<color=green>[OK]</color>");
  //       Debug.Log("Query...<color=green>[OK]</color>");
  //     }
  //   }

  //   // 轮询 // 启动游戏
  //   switch (StatusData.data.status)
  //   {
  //     default: break;
  //     case "0":
  //       yield return new WaitForSeconds(2f);
  //       StartCoroutine("QueryUserStatus");
  //       break;
  //     case "1":
  //       if (OnUserActive != null)
  //       {
  //         OnUserActive();
  //       }
  //       StopCoroutine("QueryUserStatus");
  //       break;
  //     case "2": break;
  //     case "3": break;
  //   }
  //   yield break;
  // }

  // [Serializable]
  // public class StatusResponse
  // {
  //   public int code;
  //   public string message;
  //   public StatusResponseData data;
  // }
  // [Serializable]
  // public class StatusResponseData
  // {
  //   public string status;
  //   public string status_text;
  // }
  #endregion

  // ==================================================
  #region 上传图片
  public UploadResponse UploadData;

  public event UnityAction<Texture2D> OnUpload;

  private const string uploadURL = "https://open.skyelook.com/api/longine_gz/uploadThumb";

  public void UploadPhoto2Backend(Texture2D texture2D)
  {
    StartCoroutine(UploadPhoto2BackendAction(texture2D));
    return;
  }

  private IEnumerator UploadPhoto2BackendAction(Texture2D texture2D)
  {
    byte[] bytes = texture2D.EncodeToPNG(); // 图转比特流
    string base64 = "data:image/png;base64," + Convert.ToBase64String(bytes);

    WWWForm wwwForm = new WWWForm();
    wwwForm.AddField("device_code", deviceCode);
    wwwForm.AddField("start_code", QRData.data.start_code);
    wwwForm.AddField("file", base64);
    // wwwForm.AddBinaryData("file", bytes);

    using (UnityWebRequest www = UnityWebRequest.Post(uploadURL, wwwForm))
    {
      www.SetRequestHeader("Content-Type", "application/x-www-form-urlencoded");
      www.downloadHandler = new DownloadHandlerBuffer();
      yield return www.SendWebRequest();
      if (www.result != UnityWebRequest.Result.Success)
      {
        Debug.Log($"{www.error}...<color=red>[ER]</color>");
        yield break;
      }
      else
      {
        Debug.Log("Upload...<color=green>[OK]</color>");
        Debug.Log(www.downloadHandler.text.ToString());
        UploadData = JsonConvert.DeserializeObject<UploadResponse>(www.downloadHandler.text.ToString());
      }
    }

    using (UnityWebRequest www = UnityWebRequestTexture.GetTexture(UploadData.data.qr_url)) // 搞最终QR图 // DEBUG
    {
      yield return www.SendWebRequest();
      if (www.result != UnityWebRequest.Result.Success)
      {
        Debug.Log($"{www.error}...<color=red>[ER]</color>");
        yield break;
      }
      else
      {
        if (OnUpload != null)
        {
          OnUpload(DownloadHandlerTexture.GetContent(www));
        }
        Debug.Log("Final QRCode...<color=green>[OK]</color>");
      }
    }
    yield break;
  }

  [Serializable]
  public class UploadResponse
  {
    public int code;
    public string message;
    public UploadResponseData data;
  }
  [Serializable]
  public class UploadResponseData
  {
    public string file_url;
    public string qr_url;
  }
  #endregion
}