using Microsoft.Extensions.DependencyInjection;
using Quartz.Spi;
using Quartz;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace WIDESEA_Core.QuartzJob
{

    /// <summary>
    /// 任务调度 启动服务
    /// </summary>
    public static class JobSetup
    {
        public static void AddJobSetup(this IServiceCollection services)
        {
            if (services == null) throw new ArgumentNullException(nameof(services));

            //将JobFactory注入到服务中
            services.AddSingleton<IJobFactory, JobFactory>();
            //将SchedulerCenterServer注入到服务中
            services.AddSingleton<ISchedulerCenter, SchedulerCenterServer>();
            //任务注入
            var baseType = typeof(IJob);
            //获取当前应用程序域的相对搜索路径
            var path = AppDomain.CurrentDomain.RelativeSearchPath ?? AppDomain.CurrentDomain.BaseDirectory;
            //获取指定路径下的所有程序集
            var referencedAssemblies = System.IO.Directory.GetFiles(path, "WIDESEA_Tasks.dll").Select(Assembly.LoadFrom).ToArray();
            //获取所有定义的类型
            var types = referencedAssemblies
                .SelectMany(a => a.DefinedTypes)
                .Select(type => type.AsType())
                //筛选出继承自IJob的类型
                .Where(x => x != baseType && baseType.IsAssignableFrom(x)).ToArray();
            //获取所有实现了IJob的类型
            var implementTypes = types.Where(x => x.IsClass).ToArray();
            //将所有实现了IJob的类型注入到服务中
            foreach (var implementType in implementTypes)
            {
                services.AddTransient(implementType);
            }
        }
    }
}