using Quartz;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace IStation.Server
{
    /// <summary>
    /// 自定义计划服务任务
    /// </summary>
    public class CustomCronServiceJob : Quartz.IJob
    {
        private static List<CustomCronRepeatJobHelper> _jobHelpers = new List<CustomCronRepeatJobHelper>();

        /// <summary>
        /// 
        /// </summary>
        public Task Execute(IJobExecutionContext context)
        {
            return Task.Run(async () =>
            {
                try
                {
                    #region 加载所有任务

                    var jobList = new Service.CustomCronJob().GetAll();
                    if (jobList == null || jobList.Count < 1)
                    {
                        LogHelper.Info("自定义计划服务任务中，未检索到自定义计划任务信息");
                        CancelJobs();
                        return;
                    }
                    jobList = jobList.Where(x => x.UseStatus == Model.eUseStatus.Enable).ToList();
                    if (jobList.Count < 1)
                    {
                        LogHelper.Info("自定义计划服务任务中，未检索到有效自定义计划任务信息");
                        CancelJobs();
                        return;
                    }

                    #endregion

                    #region 开启任务

                    foreach (var job in jobList)
                    {
                        var jobHelper = _jobHelpers.Find(t => t.Instance.ID == job.ID);
                        if (jobHelper == null)
                        {
                            jobHelper = new CustomCronRepeatJobHelper();
                            await jobHelper.StartJob(job);
                            _jobHelpers.Add(jobHelper);
                            LogHelper.Info($"自定义计划服务任务中：ID:{job.ID},NO:{job.NO},Name:{job.Name} 的任务开启！");
                        }
                    }

                    #endregion

                    #region 关闭任务

                    foreach (var jobHelper in _jobHelpers.ToList())
                    {
                        var job = jobList.Find(t => t.ID == jobHelper.Instance.ID);
                        if (job == null)
                        {
                            await jobHelper.CancelJob();
                            _jobHelpers.Remove(jobHelper);
                            LogHelper.Info($"自定义计划服务任务中：ID:{job.ID},NO:{job.NO},Name:{job.Name} 的任务关闭！");
                            continue;
                        }

                        if (job.Repeat != jobHelper.Instance.Repeat)
                        {
                            await jobHelper.CancelJob();
                            _jobHelpers.Remove(jobHelper);
                            var rJobHelper = new CustomCronRepeatJobHelper();
                            await rJobHelper.StartJob(job);
                            _jobHelpers.Add(rJobHelper);
                        }
                    }

                    #endregion

                    LogHelper.Info($"自定义计划服务任务中，开启任务数量为{_jobHelpers.Count}!");

                }
                catch (Exception ex)
                {
                    LogHelper.Error("自定义计划服务任务中，执行出错", ex);
                    var e = new JobExecutionException(ex);
                    throw e;
                }
            });


        }

        /// <summary>
        /// 取消任务
        /// </summary>
        public static void CancelJobs()
        {
            if (_jobHelpers != null && _jobHelpers.Count > 0)
            {
                _jobHelpers.ForEach(async x => await x.CancelJob());
                _jobHelpers.Clear();
            }
        }



    }
}