using Fake.Application;
using Fake.ObjectStorage;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Oms.Application.Dtos.Xhs;
using Oms.Application.Shared;
using Oms.Application.Storage;
using Oms.Domain.CustomersAggregate.Repositories;
using Oms.Domain.XhsAggregate.Entities;
using Oms.Domain.XhsAggregate.Repositories;

namespace Oms.Application.Services.Xhs;

[ApiExplorerSettings(GroupName = "OMS-Xhs")]
public class XhsMediaService : ApplicationService
{
    private IXhsMediaRepository MediaRepository => LazyServiceProvider.GetRequiredService<IXhsMediaRepository>();
    private ICustomerRepository CustomerRepository => LazyServiceProvider.GetRequiredService<ICustomerRepository>();
    private IObjectStorage FileStorage => LazyServiceProvider.GetRequiredService<IObjectStorage>();

    /// <summary>
    /// 上传媒体文件
    /// </summary>
    [HttpPost("/xhs/media/upload")]
    public async Task<XhsMediaUploadOutput> UploadAsync(IFormFile file)
    {
        if (file == null || file.Length == 0)
        {
            throw new BusinessException("请选择文件");
        }

        var customerId = await OmsSessionHelper.ResolveXhsCustomerIdAsync(CustomerRepository, CurrentUser);
        var ext = Path.GetExtension(file.FileName);
        var storedName = $"{Guid.NewGuid():N}{ext}";
        var relativeKey = $"uploads/xhs/{customerId}/{storedName}";

        await using var stream = file.OpenReadStream();
        var storageKey = await FileStorage.SaveObjectAsync(stream, relativeKey, file.ContentType);
        var publicUrl = FileStorage.GetPublicUrl(storageKey);

        var media = new XhsMedia
        {
            CustomerId = customerId,
            FileName = file.FileName,
            StoragePath = storageKey,
            PublicUrl = publicUrl,
            MimeType = file.ContentType,
            FileSizeBytes = file.Length
        };
        await MediaRepository.InsertAsync(media);

        return new XhsMediaUploadOutput
        {
            MediaId = media.Id,
            PublicUrl = publicUrl
        };
    }
}