using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;

using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Drive.v3.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.IO;
using Google.Apis.Upload;
using System.Threading.Tasks;
using System.Threading;



public class GoogleDriveUtils
{

    static string[] Scopes = { DriveService.Scope.Drive }; // or DriveService.Scope.Drive for full access
    static string ApplicationName = "MyDriveUploader";

    public static DriveService service;

    public static void setupService()
    {
        UserCredential credential;
        using (var stream = new FileStream("../Material/client_secret_30989913678-hk8sipecu98lp5vdsk0ictf5gufmn33p.apps.googleusercontent.com.json", FileMode.Open, FileAccess.Read))
        {
            // credential = GoogleCredential.FromStream(stream)
            //     .CreateScoped(Scopes);
             string credPath = "../Material/token.json";
             credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
                GoogleClientSecrets.FromStream(stream).Secrets,
                Scopes,
                "user",
                CancellationToken.None,
                new FileDataStore(credPath, true)).Result;
        }

        service = new DriveService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = ApplicationName,
        });
    }


    public static string getFolder(DriveService service, string path, string parentFolderId)
    {
        Debug.Log("Getting/Creating folder path: " + path);

        List<string> folders = new List<string>(path.Split('/'));
        string currentFolderId = parentFolderId;

        foreach (string folder in folders)
        {
            var request = service.Files.List();
            request.Q = $"mimeType='application/vnd.google-apps.folder' and name='{folder}' and '{currentFolderId}' in parents and trashed=false";
            request.Fields = "files(id, name)";
            request.SupportsAllDrives = true;
            request.IncludeItemsFromAllDrives = true;

            var result = request.Execute();
            if (result.Files.Count > 0)
            {
                currentFolderId = result.Files[0].Id;
                Debug.Log("Found folder: " + folder + " with ID: " + currentFolderId);
            }
            else
            {
                // Folder does not exist, create it
                var fileMetadata = new Google.Apis.Drive.v3.Data.File()
                {
                    Name = folder,
                    MimeType = "application/vnd.google-apps.folder",
                    Parents = new List<string> { currentFolderId }
                };
                var createRequest = service.Files.Create(fileMetadata);
                createRequest.Fields = "id";
                createRequest.SupportsAllDrives = true;

                var file = createRequest.Execute();
                currentFolderId = file.Id;
            }
        }

        return currentFolderId;
    }

    public static async Task upload(DriveService service, string _uploadFile, string folderId, string _fileId, string type)
    {
        Debug.Log("Uploading file to Google Drive: " + _uploadFile);

        if (System.IO.File.Exists(_uploadFile))
        {
            // File body = new File();
            // body.Name = System.IO.Path.GetFileName(_uploadFile);
            // body.Description = "File updated by Diamto Drive Sample";
            // body.MimeType = "image/png";

            // byte[] byteArray = System.IO.File.ReadAllBytes(_uploadFile);
            // System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);
            try
            {

                 // Replace with your folder ID
                var fileMetadata = new Google.Apis.Drive.v3.Data.File()
                {
                    Name = Path.GetFileName(_uploadFile),
                    Parents = new List<string>
                        {
                            folderId
                        }
                };

                Debug.Log("metadata prepared." + fileMetadata);
                // FilesResource.CreateMediaUpload request;
                // Create a new file on drive.
                using (var stream = new FileStream(_uploadFile, FileMode.Open))
                {
                    // Create a new file, with metadata and stream.

                    var request = service.Files.Create(fileMetadata, stream, "image/png");
                    request.Fields = "id, name";
                    request.SupportsAllDrives = true;

                    request.ProgressChanged += (progress) => Debug.Log($"Upload Progress: {progress.Status} - Bytes Sent: {progress.BytesSent} {progress.Exception?.Message}");
                    request.ResponseReceived += (file) => Debug.Log($"File uploaded successfully: {file.Name} (ID: {file.Id})");
                    

                    var results = await request.UploadAsync();

                    if (results.Status == UploadStatus.Failed)
                    {
                        // TODO: handle a file upload error.
                        Console.WriteLine($"Error uploading file: {results.Exception.Message}");
                    }
                    // Debug.Log("request prepared." + request);

                    // var file = request.ResponseBody;

                    // if(file==null)
                    // {
                    //     Debug.LogError("Upload failed, file is null.");
                    //     return;
                    // }
                    // string fileId= file.Id;
                    // string fileUrl = $"https://drive.google.com/file/d/{fileId}/view";
                    // Debug.Log("File URL: " + fileUrl);
                    // Debug.Log("File ID: " + fileId);
                }


            }
            catch (Exception e)
            {
                Debug.LogError("An error occurred: " + e.Message + "  " + e.StackTrace);
            }
        }
        else
        {
            Debug.LogError("File does not exist: " + _uploadFile);

        }


    }
}