using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.IdentityModel.Tokens;
using QYZH.InteractiveMagazine.Infrastructure.Middleware;
using QYZH.InteractiveMagazine.Models.Settings;
using System.Text;

namespace QYZH.InteractiveMagazine.Infrastructure.Extensions;

/// <summary>
/// 统一服务注册扩展
/// </summary>
public static class DependencyInjectionExtensions
{
    /// <summary>
    /// 注册基础设施服务
    /// </summary>
    /// <param name="services">服务集合</param>
    /// <param name="configuration">配置</param>
    public static void AddInfrastructureServices(this IServiceCollection services, IConfiguration configuration)
    {
        AddJwtAuthentication(services, configuration);

        services.AddTransient<GlobalExceptionMiddleware>();
        services.AddTransient<OperationLogMiddleware>();
     
    }

    /// <summary>
    /// 配置JWT认证
    /// </summary>
    /// <param name="services">服务集合</param>
    /// <param name="configuration">配置</param>
    private static void AddJwtAuthentication(IServiceCollection services, IConfiguration configuration)
    {
        var jwtSettings = configuration.GetSection("JwtSettings").Get<JwtSettings>()!;

        services.AddSingleton(jwtSettings);

        services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
            .AddJwtBearer(options =>
            {
                options.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuer = true,
                    ValidIssuer = jwtSettings.Issuer,
                    ValidateAudience = true,
                    ValidAudience = jwtSettings.Audience,
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtSettings.SecretKey!)),
                    ValidateLifetime = true,
                    ClockSkew = TimeSpan.Zero
                };
            });
    }
}