using Gateway;

var hostBuilder = Host.CreateDefaultBuilder()
    .ConfigureSilkyGatewayDefaults(webHostBuilder => webHostBuilder.UseStartup<Startup>());
await hostBuilder.Build().RunAsync();

namespace Gateway;

public class Startup
{
    public void ConfigureService(IServiceCollection services)
    {
        services.AddSilkyHttpServices()
            .AddRouting()
            .AddSwaggerDocuments()
            .AddMiniProfiler();
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseSwaggerDocuments();
            app.UseMiniProfiler();
        }

        app.UseRouting();
        app.UseEndpoints(endpoints => { endpoints.MapSilkyRpcServices(); });
    }
}

using Microsoft.Extensions.Hosting;

var hostBuilder = Host.CreateDefaultBuilder().ConfigureSilkyGeneralHostDefaults();
await hostBuilder.Build().RunAsync();                      

[ServiceRoute]
public interface IHelloAppService
{
    Task<string> SayHi([FromQuery]string name);
}

public class HelloAppService : IHelloAppService
{
    public Task<string> SayHi(string name)
    {
        return Task.FromResult($"Hello {name ?? "World"}");
    }
}

public class PermissionManager : IPermissionManager, IScopedDependency
{
    private readonly IUserAppService _userAppService;
    private readonly IRoleAppService _roleAppService;

    public PermissionManager(IUserAppService userAppService,
        IRoleAppService roleAppService)
    {
        _userAppService = userAppService;
        _roleAppService = roleAppService;
    }

    public async Task<ICollection<string>> GetUserRoleNamesAsync(long userId)
    {
        var userRoleOutput = await _userAppService.GetRolesAsync(userId);
        return userRoleOutput.RoleNames;
    }

    public async Task<ICollection<long>> GetUserRoleIdsAsync(long userId)
    {
        var userRoleIds = await _userAppService.GetRoleIdsAsync(userId);
        return userRoleIds;
    }

    public async Task<ICollection<string>> GetRolePermissionsAsync(long roleId)
    {
        var rolePermissions = await _roleAppService.GetPermissionsAsync(roleId);
        return rolePermissions;
    }
}

public class AuthorizationHandler : SilkyAuthorizationHandlerBase
{
    private readonly IInvokeTemplate _invokeTemplate;

    private const string CheckPermissionServiceEntryId =
        "Silky.Permission.Application.Contracts.Permission.IPermissionAppService.CheckPermissionAsync.permissionName_Get";

    private const string CheckRoleServiceEntryId =
        "Silky.Permission.Application.Contracts.Permission.IPermissionAppService.CheckRoleAsync.roleName_Get";

    public AuthorizationHandler(IInvokeTemplate invokeTemplate)
    {
        _invokeTemplate = invokeTemplate;
    }

    protected override async Task<bool> PolicyPipelineAsync(AuthorizationHandlerContext context,
        HttpContext httpContext,
        IAuthorizationRequirement requirement)
    {
        if (requirement is PermissionRequirement permissionRequirement)
        {
            if (EngineContext.Current.HostEnvironment.EnvironmentName == SilkyHeroConsts.DemoEnvironment &&
                httpContext.Request.Method != "GET")
            {
                throw new UserFriendlyException("演示环境不允许修改数据");
            }

            var serviceEntryDescriptor = httpContext.GetServiceEntryDescriptor();
            if (serviceEntryDescriptor.GetMetadata<bool>("IsSilkyAppService"))
            {
                // todo 
                return true;
            }

            return await _invokeTemplate.InvokeForObjectByServiceEntryId<bool>(CheckPermissionServiceEntryId,
                permissionRequirement.PermissionName);
        }

        return true;
    }

    protected override async Task<bool> PipelineAsync(AuthorizationHandlerContext context, HttpContext httpContext)
    {
        var serviceEntryDescriptor = httpContext.GetServiceEntryDescriptor();
        var roles = serviceEntryDescriptor
            .AuthorizeData
            .Where(p => !p.Roles.IsNullOrEmpty())
            .SelectMany(p => p.Roles?.Split(","))
            .ToList();
        foreach (var role in roles)
        {
            if (!await _invokeTemplate.InvokeForObjectByServiceEntryId<bool>(CheckRoleServiceEntryId, role))
            {
                return false;
            }
        }

        return true;
    }
}