using Hutopy.Application.AzureBlobStorage.Constants;
using Hutopy.Application.Common.Interfaces;

namespace Hutopy.Application.Users.Commands;

/// <summary>
/// Upload a profile picture. If the user has the url already, set the ProfilePictureUrl in the user only without upload.
/// </summary>
public class UploadProfilePictureCommand : IRequest<string>
{
    public required Stream ProfilePicture { get; init; }
    public string ProfilePictureUrl { get; init; } = string.Empty;
}

public class UploadProfilePictureCommandHandler(IIdentityService identityService, IAzureBlobStorageService azureBlobStorageService) : IRequestHandler<UploadProfilePictureCommand, string>
{
    public async Task<string> Handle(UploadProfilePictureCommand request, CancellationToken cancellationToken)
    {
        if (!string.IsNullOrEmpty(request.ProfilePictureUrl))
        {
            await identityService.UpdateCurrentUserProfilePictureUrlAsync(request.ProfilePictureUrl);
            return request.ProfilePictureUrl;
        }
        
        var identityUser = await identityService.GetCurrentUserAsync();
        var currentUserId = new Guid(identityUser?.Id ?? "").ToString();
        
        var blobName = $"{currentUserId}/{SubDirectoryNames.Profile}/{CommonFileNames.ProfilePicture}";
        
        var url = await azureBlobStorageService.UploadFileAsync(ContainerNames.Users, blobName, request.ProfilePicture, ContentTypes.ImagePng);

        await identityService.UpdateCurrentUserProfilePictureUrlAsync(url);
        
        return url;
    }
}