using Microsoft.Extensions.Configuration;
using SPMS.Application.Interfaces;

namespace SPMS.Infrastructure.Services;

public class LocalFileStorageService : IFileStorageService
{
    private readonly string _uploadPath;
    private readonly string _baseUrl;

    public LocalFileStorageService(IConfiguration configuration)
    {
        _uploadPath = configuration["FileStorage:UploadPath"] ?? "Uploads";
        _baseUrl = configuration["FileStorage:BaseUrl"] ?? "/uploads";
    }

    public async Task<string> SaveAsync(long serviceId, string fileName, Stream fileStream)
    {
        var directory = Path.Combine(_uploadPath, serviceId.ToString());
        Directory.CreateDirectory(directory);

        var uniqueName = $"{Guid.NewGuid():N}_{fileName}";
        var fullPath = Path.Combine(directory, uniqueName);

        using var output = new FileStream(fullPath, FileMode.Create);
        await fileStream.CopyToAsync(output);

        return $"{serviceId}/{uniqueName}";
    }

    public Task DeleteAsync(string filePath)
    {
        var fullPath = Path.Combine(_uploadPath, filePath);
        if (System.IO.File.Exists(fullPath))
            System.IO.File.Delete(fullPath);
        return Task.CompletedTask;
    }

    public string GetFileUrl(string filePath)
    {
        return $"{_baseUrl.TrimEnd('/')}/{filePath}";
    }
}