282 lines
13 KiB
C#
282 lines
13 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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//using System.Web.Mvc;
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using Song.Entities;
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using Song.ServiceInterfaces;
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using Song.ViewData.Attri;
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using WeiSha.Common;
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using System.Data;
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using System.IO;
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using pili_sdk;
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using Newtonsoft.Json;
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using System.Xml.Serialization;
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namespace Song.ViewData.Methods
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{
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/// <summary>
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/// 章节信息
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/// </summary>
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[HttpGet, HttpPut]
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public class Outline : IViewAPI
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{
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/// <summary>
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/// 获取章节
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/// </summary>
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/// <param name="id"></param>
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/// <returns></returns>
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[HttpGet]
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[Cache(Expires = 20)]
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public Song.Entities.Outline ForID(int id)
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{
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return Business.Do<IOutline>().OutlineSingle(id);
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}
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/// <summary>
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/// 章节列表
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/// </summary>
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/// <param name="couid">所属课程的id</param>
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/// <param name="pid">上级id</param>
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/// <returns></returns>
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[HttpGet(Ignore = true)]
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[Cache(Expires = 20)]
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public Song.Entities.Outline[] List(int couid, int pid)
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{
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return Business.Do<IOutline>().OutlineCount(couid, pid, true, 0);
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}
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/// <summary>
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/// 树形章节列表
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/// </summary>
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/// <param name="couid">所属课程的id</param>
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/// <returns></returns>
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[HttpGet,HttpPost,HttpPut]
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[Cache(Expires=120)]
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public DataTable Tree(int couid)
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{
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// 当前课程的所有章节
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Song.Entities.Outline[] outlines = Business.Do<IOutline>().OutlineAll(couid, true);
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if (outlines.Length > 0)
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{
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foreach (Song.Entities.Outline ol in outlines) ol.Ol_Intro = string.Empty;
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//树形章节输出
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DataTable dt = Business.Do<IOutline>().OutlineTree(outlines);
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return dt;
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}
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return null;
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}
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/// <summary>
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/// 章节附件
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/// </summary>
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/// <param name="oluid">章节的uid</param>
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/// <returns></returns>
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//[Cache(Expires = 20)]
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public Song.Entities.Accessory[] Accessory(string uid)
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{
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//先判断是否购买课程
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Song.Entities.Accounts acc = Extend.LoginState.Accounts.CurrentUser;
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if (acc == null) throw new ExceptionForNoLogin();
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Song.Entities.Outline outline = Business.Do<IOutline>().OutlineSingle(uid);
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Song.Entities.Course course = Business.Do<ICourse>().CourseSingle(outline.Cou_ID);
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//是否免费，或是限时免费
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if (course.Cou_IsLimitFree)
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{
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DateTime freeEnd = course.Cou_FreeEnd.AddDays(1).Date;
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if (!(course.Cou_FreeStart <= DateTime.Now && freeEnd >= DateTime.Now))
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course.Cou_IsLimitFree = false;
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}
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//是否购买 （必须是免费或购买后才能查看附件，仅试学时，不可以查看附件）
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bool isBuy = course.Cou_IsFree || course.Cou_IsLimitFree ? true : Business.Do<ICourse>().IsBuy(course.Cou_ID, acc.Ac_ID);
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//if (!isBuy) throw new Exception("未购买课程，无法提供附件信息");
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//获取附件
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List<Song.Entities.Accessory> access = Business.Do<IAccessory>().GetAll(uid, "Course");
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if (isBuy)
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{
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foreach (Accessory ac in access)
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ac.As_FileName = Upload.Get["Course"].Virtual + ac.As_FileName;
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}
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return access.ToArray<Song.Entities.Accessory>();
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}
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/// <summary>
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/// 视频事件
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/// </summary>
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/// <param name="olid"></param>
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/// <returns></returns>
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[Cache(Expires = 20)]
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public OutlineEvent[] VideoEvents(int olid)
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{
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OutlineEvent[] events = Business.Do<IOutline>().EventAll(-1, olid, -1, true);
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foreach (OutlineEvent ev in events)
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{
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if (ev.Oe_EventType == 1 || ev.Oe_EventType == 2) continue;
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if (string.IsNullOrWhiteSpace(ev.Oe_Datatable) || ev.Oe_Datatable.Trim() == "") continue;
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//如果是问答
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XmlSerializer xmlSerial = new XmlSerializer(typeof(DataTable));
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DataTable dt = (DataTable)xmlSerial.Deserialize(new System.IO.StringReader(ev.Oe_Datatable));
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ev.Oe_Datatable = JsonConvert.SerializeObject(dt);
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}
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return events;
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}
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/// <summary>
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/// 章节的状态
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/// </summary>
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/// <param name="olid"></param>
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/// <returns></returns>
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public Dictionary<string, object> State(int olid)
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{
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Dictionary<string, object> dic = new Dictionary<string, object>();
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Song.Entities.Accounts acc = Extend.LoginState.Accounts.CurrentUser;
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dic.Add("isLogin", acc != null); //学员是否登录
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//
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Song.Entities.Outline outline = Business.Do<IOutline>().OutlineSingle(olid);
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if (outline == null) throw new Exception("章节不存在");
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dic.Add("Name", outline.Ol_Name);
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Song.Entities.Course course = Business.Do<ICourse>().CourseSingle(outline.Cou_ID);
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if (course == null) throw new Exception("课程不存在");
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dic.Add("Course", course.Cou_Name);
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Song.Entities.Organization orgin;
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//是否限制在桌面应用中打开
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dic.Add("DeskAllow", this.getDeskallow(course,outline,out orgin));
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//是否在切换浏览器时继续播放
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dic.Add("SwitchPlay", this.getSwitchPlay(course, acc, orgin));
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//是否免费，或是限时免费
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if (course.Cou_IsLimitFree)
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{
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DateTime freeEnd = course.Cou_FreeEnd.AddDays(1).Date;
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if (!(course.Cou_FreeStart <= DateTime.Now && freeEnd >= DateTime.Now))
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course.Cou_IsLimitFree = false;
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}
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//是否可以学习，是否购买
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bool isStudy = false, isBuy = false, canStudy = false;
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if (acc != null)
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{
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isStudy = Business.Do<ICourse>().Study(course.Cou_ID, acc.Ac_ID);
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isBuy = course.Cou_IsFree || course.Cou_IsLimitFree ? true : Business.Do<ICourse>().IsBuy(course.Cou_ID, acc.Ac_ID);
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//学习记录
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Song.Entities.LogForStudentStudy studyLog = Business.Do<IStudent>().LogForStudySingle(acc.Ac_ID, outline.Ol_ID);
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dic.Add("StudyTime", studyLog != null ? studyLog.Lss_StudyTime : 0);
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dic.Add("PlayTime", studyLog != null ? studyLog.Lss_PlayTime : 0);
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}
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dic.Add("isStudy", isStudy);
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dic.Add("isBuy", isBuy);
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//是否可以学习,如果是免费或已经选修便可以学习，否则当前课程允许试用且当前章节是免费的，也可以学习
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canStudy = isBuy || (isStudy && outline.Ol_IsUse && outline.Ol_IsFinish && course.Cou_IsTry && outline.Ol_IsFree);
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dic.Add("canStudy", canStudy);
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//是否有知识库
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int knlCount = Business.Do<IKnowledge>().KnowledgeOfCount(-1, course.Cou_ID, -1, true);
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dic.Add("isKnl", knlCount > 0 && canStudy);
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//是否有视频，是否为外链视频
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List<Song.Entities.Accessory> videos = Business.Do<IAccessory>().GetAll(outline.Ol_UID, "CourseVideo");
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bool existVideo = videos.Count > 0;
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dic.Add("outerVideo", existVideo && (videos.Count > 0 && videos[0].As_IsOuter)); //站外视频,包括其它网站的视频，或是视频播放链接
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dic.Add("otherVideo", existVideo && (videos.Count > 0 && videos[0].As_IsOther)); //其它视频平台的链接
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if (videos.Count > 0)
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{
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string videoUrl = existVideo ? videos[0].As_FileName : string.Empty; //视频地址
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//如果是内部链接
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if (existVideo && !videos[0].As_IsOuter)
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{
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videoUrl = Upload.Get[videos[0].As_Type].Virtual + videoUrl;
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string ext = System.IO.Path.GetExtension(videoUrl).ToLower();
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if (ext == ".flv") videoUrl = Path.ChangeExtension(videoUrl, ".mp4");
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}
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dic.Add("urlVideo", canStudy ? videoUrl : string.Empty);
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outline.Ol_IsLive = false;
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}
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//直播
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bool isLive = outline.Ol_IsLive, isLiving = false;
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if (outline.Ol_IsLive)
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{
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string urlVideo = string.Empty;
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if (canStudy)
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{
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//查询直播状态
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pili_sdk.pili.StreamStatus status = Pili.API<IStream>().Status(outline.Ol_LiveID);
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if (status != null)
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{
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pili_sdk.pili.Stream stream = status.Stream;
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string proto = Business.Do<ILive>().GetProtocol; //协议，http还是https
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urlVideo = string.Format("{0}://{1}/{2}/{3}.m3u8", proto, stream.LiveHlsHost, stream.HubName, stream.Title);
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isLiving = status.Status == "connected"; //正在直播
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existVideo = isLiving ? false : existVideo;
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}
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}
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//直播播放地址
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if(!dic.ContainsKey("urlVideo"))
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dic.Add("urlVideo", urlVideo);
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//直播开始或结束
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dic.Add("LiveStart", DateTime.Now > outline.Ol_LiveTime);
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dic.Add("LiveOver", outline.Ol_LiveTime.AddMinutes(outline.Ol_LiveSpan) < DateTime.Now);
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}
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dic.Add("isLive", outline.Ol_IsLive); //是否为直播章节
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dic.Add("isLiving", isLiving && canStudy); //是否在直播中
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dic.Add("existVideo", existVideo && canStudy);
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//是否有课程内容
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bool isContext = !string.IsNullOrWhiteSpace(outline.Ol_Intro);
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dic.Add("isContext", isContext && canStudy);
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//是否有试题
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bool isQues = Business.Do<IOutline>().OutlineIsQues(outline.Ol_ID, true);
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dic.Add("isQues", isQues && canStudy);
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//是否有附件
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int accessCount = Business.Do<IAccessory>().OfCount(outline.Ol_UID, "Course");
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dic.Add("isAccess", accessCount > 0 && canStudy);
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//啥都没有（视频，内容，附件，试题，都没有）
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bool isNull = !(existVideo || isLive || isContext || isQues || isQues || accessCount > 0);
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dic.Add("isNull",isNull || !canStudy);
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return dic;
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}
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/// <summary>
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/// 判断是否必须在桌面应用中学习
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/// </summary>
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/// <returns>如果为true，则必须在课面应用中学习</returns>
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private bool getDeskallow(Song.Entities.Course course, Song.Entities.Outline ol,out Song.Entities.Organization organ)
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{
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//当前机构
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organ = Business.Do<IOrganization>().OrganSingle(course.Org_ID);
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//自定义配置项
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WeiSha.Common.CustomConfig config = CustomConfig.Load(organ.Org_Config);
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//是否限制在桌面应用中学习
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bool studyFordesk = config["StudyForDeskapp"].Value.Boolean ?? false; //课程学习需要在桌面应用打开
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bool freeFordesk = config["FreeForDeskapp"].Value.Boolean ?? false; //免费课程和试用章节除外
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if (!WeiSha.Common.Browser.IsDestopApp)
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{
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if (!freeFordesk)
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{
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return studyFordesk && !WeiSha.Common.Browser.IsDestopApp;
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}
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else
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{
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if (course.Cou_IsFree || course.Cou_IsLimitFree) return false;
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if (ol.Ol_IsFree) return false;
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}
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}
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return true && !WeiSha.Common.Browser.IsDestopApp;
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}
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/// <summary>
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/// 判断当前课程是否允许切换浏览器时视频暂停
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/// </summary>
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/// <param name="course"></param>
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/// <param name="acc"></param>
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/// <param name="organ"></param>
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/// <returns>true，则允许浏览器失去焦点时，视频仍然播放</returns>
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private bool getSwitchPlay(Song.Entities.Course course, Song.Entities.Accounts acc, Song.Entities.Organization organ)
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{
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if (acc == null) return false;
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//自定义配置项
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WeiSha.Common.CustomConfig config = CustomConfig.Load(organ.Org_Config);
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bool isstop = config["IsSwitchPlay"].Value.Boolean ?? false;
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if (isstop) return true;
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//如果机构设置中为false，继续判断学员组的设置
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Song.Entities.StudentSort sort = Business.Do<IStudent>().SortSingle(acc.Sts_ID);
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if (sort == null || !sort.Sts_IsUse) return isstop;
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return sort.Sts_SwitchPlay;
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}
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}
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}
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