public async Task RefreshToken()
{
try
{
TokenDao dao = new TokenDao(connectionString);
var token = dao.GetAvaliableToken();
if (token == null)
{
return;
}
if (DateTime.Now > token.ExpiresIn)
{
return;//已经过期的token无效
}
if (DateTime.Now.AddDays(1) > token.ExpiresIn)
{// 一天内到期
if (token.RefreshTimes >= 5)
{
return;//最多刷新5次
}
await TokenRefreshRequest(token);
}
}
catch (Exception err)
{
logger.LogError("刷新Token失败", err);
}
}
public async Task DownloadVideoList()
{
try
{
TokenDao tokenDao = new TokenDao(connectionString);
var token = tokenDao.GetAvaliableToken();
if (token == null)
{
logger.LogWarning("没有可用的Token");
return;
}
using (var client = HttpClientFactory.Create())
{
string url = $"{domain}/video/list?open_id={token.OpenId}&access_token={token.AccessToken}&cursor={0}&count={pageCount}";
var response = await client.SendAsync(new HttpRequestMessage(HttpMethod.Get, url));
var content = await response.Content.ReadAsStringAsync();
var videoListResponse = JsonConvert.DeserializeObject <VideoListResponseModel>(content);
if (videoListResponse?.data.error_code != 0)
{
logger.LogError($"请求Token失败:{videoListResponse?.data?.error_code} {videoListResponse?.data?.description}");
return;
}
List <VideoEntity> entities = new List <VideoEntity>();
var dao = new VideoDao(connectionString);
videoListResponse?.data?.list?.ForEach(t =>
{
entities.Add(new VideoEntity()
{
ItemId = t.item_id,
VideoStatus = t.video_status,
Title = t.title,
CreateTime = StampToDateTime(t.create_time),
Cover = t.cover,
ShareUrl = t.share_url,
CommentCount = t.statistics.comment_count,
DiggCount = t.statistics.digg_count,
DownloadCount = t.statistics.download_count,
ForwardCount = t.statistics.forward_count,
PlayCount = t.statistics.play_count,
ShareCount = t.statistics.share_count,
ReceiveTime = DateTime.Now
});
});
if (entities.Count == 0)
{
return;
}
var existIds = dao.GetVideosByItemIds(entities.Select(t => t.ItemId).ToArray())
.Select(t => t.ItemId)
.ToArray();
var newEntities = entities
.Where(t => !existIds.Contains(t.ItemId))
.ToList();
dao.CreateVideo(newEntities);
}
}
catch (Exception err)
{
logger.LogError("获取视频列表失败", err);
}
}
public async Task <string> GetVideoUrl(string itemId)
{
try
{
TokenDao tokenDao = new TokenDao(connectionString);
var token = tokenDao.GetAvaliableToken();
if (token == null)
{
logger.LogWarning("没有可用的Token");
return(null);
}
using (var client = HttpClientFactory.Create())
{
string url = $"{domain}/video/data?open_id={token.OpenId}&access_token={token.AccessToken}";
//var response = await client.SendAsync(new HttpRequestMessage(HttpMethod.Post, url));
var str = JsonConvert.SerializeObject(new
{
item_ids = new[] { itemId }
});
HttpContent requestContent = new StringContent(str);
requestContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");
var response = await client.PostAsync(url, requestContent);
var content = await response.Content.ReadAsStringAsync();
var videoListResponse = JsonConvert.DeserializeObject <VideoListResponseModel>(content);
if (videoListResponse?.data.error_code != 0)
{
logger.LogError($"请求Token失败:{videoListResponse?.data?.error_code} {videoListResponse?.data?.description}");
return(null);
}
List <VideoEntity> entities = new List <VideoEntity>();
var dao = new VideoDao(connectionString);
videoListResponse?.data?.list?.ForEach(t =>
{
entities.Add(new VideoEntity()
{
ItemId = t.item_id,
VideoStatus = t.video_status,
Title = t.title,
CreateTime = StampToDateTime(t.create_time),
Cover = t.cover,
ShareUrl = t.share_url,
CommentCount = t.statistics.comment_count,
DiggCount = t.statistics.digg_count,
DownloadCount = t.statistics.download_count,
ForwardCount = t.statistics.forward_count,
PlayCount = t.statistics.play_count,
ShareCount = t.statistics.share_count,
ReceiveTime = DateTime.Now
});
});
if (entities.Count == 0)
{
return(null);
}
return(entities.FirstOrDefault()?.ShareUrl);
}
}
catch (Exception err)
{
logger.LogError("获取视频列表失败", err);
return(null);
}
}