using Microsoft.Extensions.DependencyInjection;

namespace DS.Module.Core.ServiceExtensions;
/// <summary>
/// 跨域服务
/// </summary>
public static class CorsInstall
{ 
    /// <summary>
    /// 将模块服务添加到依赖注入服务容器中
    /// </summary>
    /// <param name="services">依赖注入服务容器</param>
    /// <returns></returns>
    public static IServiceCollection AddCorsInstall(this IServiceCollection services)
    { 
        if (services == null) throw new ArgumentNullException(nameof(services));

        //跨域第二种方法，声明策略，记得下边app中配置
        //跨域请求
        string  policyName = AppSetting.Configuration["Cors:PolicyName"];
        var corsUrl = AppSetting.Configuration["Cors:Url"];
        services.AddCors(c =>
        {
            c.AddPolicy(policyName, policy =>
            {
                policy.WithOrigins(corsUrl
                        .Split(",", StringSplitOptions.RemoveEmptyEntries).ToArray())
                    //policy.WithOrigins("http://localhost:5001")//支持多个域名端口，注意端口号后不要带/斜杆：比如localhost:8000/，是错的
                    .AllowAnyHeader().AllowAnyMethod().AllowCredentials(); //允许cookie;
            });
        });

        return services;
    }
}