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DownloadService.cs

using Microsoft.AspNetCore.Http;
using Nop.Core.Domain.Media;
using Nop.Data;

namespace Nop.Services.Media;

/// 
/// Download service
/// 
public partial class DownloadService : IDownloadService
{
    #region Fields

    protected readonly IRepository _downloadRepository;

    #endregion

    #region Ctor

    public DownloadService(IRepository downloadRepository)
    {
        _downloadRepository = downloadRepository;
    }

    #endregion

    #region Methods

    /// 
    /// Gets a download
    /// 
    /// Download identifier
    /// 
    /// A task that represents the asynchronous operation
    /// The task result contains the download
    /// 
    public virtual async Task GetDownloadByIdAsync(int downloadId)
    {
        return await _downloadRepository.GetByIdAsync(downloadId);
    }

    /// 
    /// Gets a download by GUID
    /// 
    /// Download GUID
    /// 
    /// A task that represents the asynchronous operation
    /// The task result contains the download
    /// 
    public virtual async Task GetDownloadByGuidAsync(Guid downloadGuid)
    {
        if (downloadGuid == Guid.Empty)
            return null;

        var query = from o in _downloadRepository.Table
            where o.DownloadGuid == downloadGuid
            select o;

        return await query.FirstOrDefaultAsync();
    }

    /// 
    /// Deletes a download
    /// 
    /// Download
    /// A task that represents the asynchronous operation
    public virtual async Task DeleteDownloadAsync(Download download)
    {
        await _downloadRepository.DeleteAsync(download);
    }

    /// 
    /// Inserts a download
    /// 
    /// Download
    /// A task that represents the asynchronous operation
    public virtual async Task InsertDownloadAsync(Download download)
    {
        await _downloadRepository.InsertAsync(download);
    }

    /// 
    /// Gets the download binary array
    /// 
    /// File
    /// 
    /// A task that represents the asynchronous operation
    /// The task result contains the download binary array
    /// 
    public virtual async Task GetDownloadBitsAsync(IFormFile file)
    {
        await using var fileStream = file.OpenReadStream();
        await using var ms = new MemoryStream();
        await fileStream.CopyToAsync(ms);
        var fileBytes = ms.ToArray();

        return fileBytes;
    }

    #endregion
}