back/Services/ImageService.cs - master - renix/TravelGuide

back/Services/ImageService.cs

81 строка2 KB

atikinvobud

Get-запрос, который по id города, возвращает все достопримечательности

13 мар 2025, 22:43

13 мар 2025, 22:43b2e687a

using back.DTOs.FilesDTOs;
using Microsoft.AspNetCore.Mvc;
using MongoDB.Bson;
using MongoDB.Driver;
using MongoDB.Driver.GridFS;

namespace back.Controllers;
public class ImageService
{
    private readonly MongoDbContext _mongoContext;

    public ImageService(MongoDbContext mongoContext, IMongoClient mongoClient)
    {
        _mongoContext = mongoContext;
    }

    public string UploadFile(FileUploadDto fileUploadDto)
    {
        if (!System.IO.File.Exists(fileUploadDto.FilePath))
        {
            return "-1";
        }

        var gridFs = _mongoContext.GridFsBucket;

        using (var stream = new FileStream(fileUploadDto.FilePath, FileMode.Open, FileAccess.Read))
        {
            string fileName = Path.GetFileName(fileUploadDto.FilePath);
            GridFSUploadOptions options = new GridFSUploadOptions
            {
                Metadata = new BsonDocument
                {
                    { "originalPath", fileUploadDto.FilePath },
                    { "uploadDate", DateTime.UtcNow }
                }
            };

            var fileId = gridFs.UploadFromStream(fileName, stream, options);
            return fileId.ToString();
        }
    }

   /* public FileStreamResult GetImage(string id)
    {
        ObjectId objectId = ObjectId.Parse(id);

        var gridFs = _mongoContext.GridFsBucket;

        var filter = Builders<GridFSFileInfo>.Filter.Eq(info => info.Id, objectId);
        var fileInfo = gridFs.Find(filter).FirstOrDefault();

        var memoryStream = new MemoryStream();
        gridFs.DownloadToStream(objectId, memoryStream);
        memoryStream.Seek(0, SeekOrigin.Begin);

        string contentType = GetContentType(fileInfo.Filename);

        return new FileStreamResult(memoryStream, contentType)
        {
            FileDownloadName = fileInfo.Filename
        };
    }*/
    public string GetImage(string id)
    {
        return $"http://localhost:5216/test/images/{id}";
    }
    public string GetContentType(string fileName)
    {
        var extension = Path.GetExtension(fileName)?.ToLowerInvariant();
        return extension switch
        {
            ".jpg" or ".jpeg" => "image/jpeg",
            ".png" => "image/png",
            ".gif" => "image/gif",
            ".bmp" => "image/bmp",
            ".svg" => "image/svg+xml",
            ".webp" => "image/webp",
            _ => "application/octet-stream",
        };
    }
}