/// <summary>
/// 根据情况从本地或服务器获取频道列表。
/// </summary>
/// <returns>频道列表</returns>
private static ChannelInfo GetChannelInfo()
{
var localPath = Path.Combine(ConnectionBase.DataFolder, "channelinfo");
ChannelInfo localChannelInfo = null;
//尝试获取本地频道列表
try
{
if (File.Exists(localPath))
{
var localChannelInfoTime = File.GetLastWriteTime(localPath);
var content = File.ReadAllText(localPath);
var channelInfo = new ChannelInfo(Json.JsonHelper.FromJson <Json.ChannelInfo>(content));
if (channelInfo.IsEffective)
{
localChannelInfo = channelInfo;
}
//满足条件时采用本地频道列表
var distance = TimeSpan.FromSeconds(int.Parse(ConfigurationManager.AppSettings["Player.ChannelInfoExpireSeconds"]));
if (localChannelInfo != null && DateTime.Now - localChannelInfoTime < distance)
{
return(localChannelInfo);
}
}
}
catch (Exception ex)
{
Debug.WriteLine(DateTime.Now + " 获取本地频道列表失败：" + ex.Message);
}
//尝试获取服务器频道列表
int tryCount = 0;
int tryCountMax = int.Parse(ConfigurationManager.AppSettings["Player.ChannelInfoRetryCount"]);
while (true)
{
//获取服务器频道列表多次失败后采用本地频道列表
if (tryCount == tryCountMax && localChannelInfo != null)
{
return(localChannelInfo);
}
++tryCount;
Debug.WriteLine(DateTime.Now + " 获取频道列表……");
var file = new ConnectionBase {
UseGzip = true
}.Get(
string.Format(ConfigurationManager.AppSettings["Player.ChannelInfoUrlFormat"],
typeof(Player).Assembly.GetName().Version));
Debug.WriteLine(DateTime.Now + " 获取频道列表完成");
if (string.IsNullOrEmpty(file))
{
TakeABreak();
continue;
}
var channelInfo = new ChannelInfo(Json.JsonHelper.FromJson <Json.ChannelInfo>(file));
if (!channelInfo.IsEffective)
{
Debug.WriteLine(DateTime.Now + " 获取频道列表失败");
TakeABreak();
}
else
{
Debug.WriteLine(DateTime.Now + " 获取频道列表成功");
try
{
File.WriteAllText(localPath, file);
}
catch (Exception ex)
{
Debug.WriteLine(DateTime.Now + " 写入本地频道列表失败：" + ex.Message);
}
return(channelInfo);
}
}
}
/// <summary>
/// 保存Cookies
/// </summary>
/// <returns>成功与否</returns>
static bool SaveCookies()
{
return(ConnectionBase.SaveCookies());
}
/// <summary>
/// 获取播放列表
/// </summary>
/// <param name="playerState">播放器状态</param>
/// <param name="operationType">操作类型</param>
/// <returns>
/// 播放列表
/// </returns>
internal static PlayList GetPlayList(Player.PlayerState playerState, string operationType)
{
//构造链接
Parameters parameters = new Parameters();
parameters["app_name"] = "radio_desktop_win";
parameters["version"] = "100";
parameters["user_id"] = playerState.CurrentUser.UserID;
parameters["token"] = playerState.CurrentUser.Token;
parameters["expire"] = playerState.CurrentUser.Expire;
parameters["from"] = "mainsite";
parameters["context"] = playerState.CurrentChannel.Context;
parameters["sid"] = playerState.CurrentSong != null ? playerState.CurrentSong.SongId : null;
parameters["channel"] = playerState.CurrentChannel.Id;
parameters["type"] = operationType;
random.NextBytes(bytes);
parameters["r"] = (BitConverter.ToUInt64(bytes, 0) % 0xFFFFFFFFFF).ToString("x10");
if (playerState.CurrentUser.IsPro)
{
string kbps = null;
switch (playerState.CurrentUser.ProRate)
{
case ProRate.Kbps64:
kbps = "64";
break;
case ProRate.Kbps128:
kbps = "128";
break;
case ProRate.Kbps192:
kbps = "192";
break;
default:
break;
}
parameters["kbps"] = kbps;
}
string url = ConnectionBase.ConstructUrlWithParameters("http://www.douban.com/j/app/radio/people", parameters);
//获取列表
string json = new ConnectionBase().Get(url, @"application/json, text/javascript, */*; q=0.01", @"http://douban.fm");
var jsonPlayList = Json.JsonHelper.FromJson <Json.PlayList>(json);
if (jsonPlayList != null && jsonPlayList.r)
{
RaiseGetPlayListFailedEvent(json);
}
PlayList pl = new PlayList(jsonPlayList);
//将小图更换为大图
foreach (var s in pl)
{
s.Picture = s.Picture.Replace("/mpic/", "/lpic/").Replace("//otho.", "//img3.");
}
//去广告
pl.RemoveAll(s => s.IsAd);
return(pl);
}
