using FictionArchive.Common.Enums;
using FictionArchive.Service.NovelService.Models.IntegrationEvents;
using FictionArchive.Service.Shared.Services.EventBus;

namespace FictionArchive.Service.NovelService.Services.EventHandlers;

public class FileUploadRequestStatusUpdateEventHandler : IIntegrationEventHandler<FileUploadRequestStatusUpdateEvent>
{
    private readonly ILogger<FileUploadRequestStatusUpdateEventHandler> _logger;
    private readonly NovelServiceDbContext _context;
    private readonly NovelUpdateService _novelUpdateService;

    public FileUploadRequestStatusUpdateEventHandler(ILogger<FileUploadRequestStatusUpdateEventHandler> logger, NovelServiceDbContext context, NovelUpdateService novelUpdateService)
    {
        _logger = logger;
        _context = context;
        _novelUpdateService = novelUpdateService;
    }

    public async Task Handle(FileUploadRequestStatusUpdateEvent @event)
    {
        var image = await _context.Images.FindAsync(@event.RequestId);
        if (image == null)
        {
            // Not a request we care about.
            return;
        }
        if (@event.Status == RequestStatus.Failed)
        {
            _logger.LogError("Image upload failed for image with id {imageId}", image.Id);
            return;
        }
        else if (@event.Status == RequestStatus.Success)
        {
            _logger.LogInformation("Image upload succeeded for image with id {imageId}", image.Id);
            await _novelUpdateService.UpdateImage(image.Id, @event.FileAccessUrl);
        }
    }
}