using IM.InitCommon.Management;

using IM.InitCommon;
using Microsoft.Extensions.FileProviders;

namespace FileService.WebApi
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);

            // Add services to the container.
            builder.ConfigureDbConfiguration();

            builder.Services.AddControllers();
            // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
            builder.Services.AddEndpointsApiExplorer();
            builder.Services.AddSwaggerGen();
            builder.ConfigExtraServices();

            var app = builder.Build();
            if (app.ApplyMigrationsIfRequested(args)) return;

            // Configure the HTTP request pipeline.
            if (app.Environment.IsDevelopment())
            {
                app.UseSwagger();
                app.UseSwaggerUI();
            }

            app.UseAppDefault();
            app.MapManagementHealth();

            // 仅 FileService 暴露公开桶目录为静态直链，不动共享 UseAppDefault
            UsePublicStaticFiles(app);

            app.MapControllers();

            app.Run();
        }

        private static void UsePublicStaticFiles(WebApplication app)
        {
            var storage = app.Configuration.GetSection("StorageOptions").Get<StorageOptions>();
            if (storage?.Providers == null ||
                !storage.Providers.TryGetValue(storage.DefaultProviderCode, out var provider))
            {
                return;
            }

            if (string.IsNullOrEmpty(provider.LocalRootPath) || string.IsNullOrEmpty(provider.PublicBucket))
            {
                return;
            }

            var publicPath = Path.Combine(provider.LocalRootPath, provider.PublicBucket);
            Directory.CreateDirectory(publicPath);

            app.UseStaticFiles(new StaticFileOptions
            {
                FileProvider = new PhysicalFileProvider(publicPath),
                RequestPath = "/static",
                OnPrepareResponse = ctx =>
                    ctx.Context.Response.Headers["Cache-Control"] = "public,max-age=2592000"
            });
        }
    }
}