using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace VRS.Handler
{
    /// <summary>
    /// 科目管理
    /// </summary>
    public class Subject : BaseHandler, IHttpHandler
    {
        DataService.BLL.admin_user bll = new DataService.BLL.admin_user();
        DataService.BLL.pro_subject bll_subject = new DataService.BLL.pro_subject();
        DataService.BLL.pro_subject_proc bll_subject_proc = new DataService.BLL.pro_subject_proc();
        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            if (null == context.Request["action"])
            {
                var result = GetResult(false, "缺少参数：action");
                context.Response.Write(result);
                context.Response.End();
            }
            string action = context.Request["action"];
            switch (action)
            {

                //查询单个科目
                case "query":
                    Query(context);
                    break;

                //查询所有科目
                case "all":
                    ALL(context);
                    break;

                default:
                    var result = GetResult(false, "方法名不存在：" + action);
                    context.Response.Write(result);
                    break;
            }
        }

        /// <summary>
        /// 查询所有科目
        /// </summary>
        /// <param name="context"></param>
        public void ALL(HttpContext context)
        {
            var list_subject = bll_subject.GetModelList("");
            var result = GetResult(true, list_subject);
            context.Response.Write(result);
            context.Response.End();
        }

        /// <summary>
        /// 查询单个科目
        /// </summary>
        /// <param name="context"></param>
        public void Query(HttpContext context)
        {
            var ret = string.Empty;
            var subject_id = context.Request.Params["subject_id"];
            if (string.IsNullOrEmpty(subject_id))
            {
                ret = GetResult(false, "科目：subject_id 不能为空");
                context.Response.Write(ret);
                context.Response.End();
            }
            var subject = bll_subject.GetModel(subject_id);
            if (null != subject)
            {
                var result = GetResult(true, subject);
                context.Response.Write(result);
                context.Response.End();
            }
            else
            {
                var result = GetResult(false, null, "科目不存在！");
                context.Response.Write(result);
                context.Response.End();
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}