GetDailymationMedia

Dailymation.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Collections;
using Alex.Data;
using Alex.Syntax;
using Alex.Data.Json;

namespace Alex.Social.MediaGet.Parsers {
    public class DailymationParser : Parser {

        public override MediaInfo[] GetMediaInfos(Uri Uri) {
            if(!IsMatch(Uri))//檢查網址是否符合規範
                throw new UriNotMatchException(Uri);//如果不符合網址規範返回例外

            string EmbedUrl = string.Format("http://www.dailymotion.com/embed/video/{0}",GetMediaId(Uri));

            JsonObject Info = GetMediaJson(EmbedUrl);//取得Json物件

            string AUDIO = Info["stream_audio_url"] as string;//取出影片真實位置
            string H264_HD1080 = Info["stream_h264_hd1080_url"] as string;
            string H264_HD = Info["stream_h264_hd_url"] as string;
            string H264_HQ = Info["stream_h264_hq_url"] as string;
            string H264_LD = Info["stream_h264_ld_url"] as string;
            string H264 = Info["stream_h264_url"] as string;


            ArrayList result = new ArrayList();

            MediaInfo Templet = new MediaInfo();//資料樣板
            Templet.Parser = ParserEnum.Dailymation;
            Templet.SourceUrl = Uri;
            Templet.Name = Info["title"] as string;
            Templet.Attributes.AddWithValue("author" ,Info["owner.username"]);//使用者帳號
            Templet.Attributes.Add(Info.GetWithKey("duration"));//影片長度
            Templet.Attributes.AddWithValue("thumb" ,Info["thumbnail_url"]);//縮圖網址
            Templet.Attributes.Add(Info.GetWithKey("language"));//語系

            if(AUDIO != null) {
                MediaInfo audio = Templet.Clone();
                audio.Type = MediaType.Audio;
                audio.RealUrl = new Uri[] { new Uri(AUDIO) };
                audio.Attributes.AddWithValue("type" ,"mp3");
                
                result.Add(audio);
            }

            if(H264_HD1080 != null) {
                MediaInfo hd1080 = Templet.Clone();
                hd1080.Type = MediaType.Video;
                hd1080.RealUrl = new Uri[] { new Uri(H264_HD1080) };
                hd1080.Attributes.AddWithValue("quality" ,"hd1080");
                hd1080.Attributes.AddWithValue("size" ,GetSize(H264_HD1080));
                hd1080.Attributes.AddWithValue("type" ,"mp4");

                result.Add(hd1080);
            }

            if(H264_HD != null) {
                MediaInfo hd = Templet.Clone();
                hd.Type = MediaType.Video;
                hd.RealUrl = new Uri[] { new Uri(H264_HD) };
                hd.Attributes.AddWithValue("quality" ,"hd");
                hd.Attributes.AddWithValue("size" ,GetSize(H264_HD));
                hd.Attributes.AddWithValue("type" ,"mp4");

                result.Add(hd);
            }

            if(H264_HQ != null) {
                MediaInfo hq = Templet.Clone();
                hq.Type = MediaType.Video;
                hq.RealUrl = new Uri[] { new Uri(H264_HQ) };
                hq.Attributes.AddWithValue("quality" ,"hq");
                hq.Attributes.AddWithValue("size" ,GetSize(H264_HQ));
                hq.Attributes.AddWithValue("type" ,"mp4");

                result.Add(hq);
            }

            if(H264_LD != null) {
                MediaInfo ld = Templet.Clone();
                ld.Type = MediaType.Video;
                ld.RealUrl = new Uri[] { new Uri(H264_LD) };
                ld.Attributes.AddWithValue("quality" ,"ld");
                ld.Attributes.AddWithValue("size" ,GetSize(H264_LD));
                ld.Attributes.AddWithValue("type" ,"mp4");

                result.Add(ld);
            }

            if(H264 != null) {
                MediaInfo def = Templet.Clone();
                def.Type = MediaType.Video;
                def.RealUrl = new Uri[] { new Uri(H264) };
                def.Attributes.AddWithValue("quality" ,"default");
                def.Attributes.AddWithValue("size" ,GetSize(H264));
                def.Attributes.AddWithValue("type" ,"mp4");

                result.Add(def);
            }

            return result.ToArray<MediaInfo>();//回傳結果
        }

        private string GetMediaId(Uri Uri) {//取得影片ID
            string result = Uri.Segments.Last<string>();
            result = result.Substring(0 ,result.IndexOf("_"));
            return result;
        }

        private JsonObject GetMediaJson(string Url) {//取得影片JSON物件
            WebClient browser = new WebClient();
            byte[] data = browser.DownloadData(Url);
            string html = Encoding.UTF8.GetString(data);
            html = html.InnerString("var info =" ,"fields =");
            html = html.Substring(0 ,html.LastIndexOf(","));
            JsonObject obj = JsonObject.Parse(html);
            return obj;
        }

        private string GetSize(string RealUrl) {//從真實位址網址中取得SIZE
            return RealUrl.InnerString("-" ,"/");
        }
    }
}