using System.Collections.Generic;

using System.Linq;

using SiteServer.CMS.Core;

using SiteServer.CMS.DataCache.Core;

using SiteServer.CMS.Model;

namespace SiteServer.CMS.DataCache

{

public static class ContentTagManager

{

private static class ContentTagManagerCache

{

private static readonly object LockObject = new object();

private static readonly string CacheKey = DataCacheManager.GetCacheKey(nameof(ContentTagManager));

public static void Clear()

{

DataCacheManager.Remove(CacheKey);

}

public static Dictionary<int, List<ContentTagInfo>> GetAllContentTags()

{

var retval = DataCacheManager.Get<Dictionary<int, List<ContentTagInfo>>>(CacheKey);

if (retval != null) return retval;

lock (LockObject)

{

retval = DataCacheManager.Get<Dictionary<int, List<ContentTagInfo>>>(CacheKey);

if (retval == null)

{

retval = DataProvider.ContentTagDao.GetAllContentTags();

DataCacheManager.Insert(CacheKey, retval);

}

}

return retval;

}

}

public static void ClearCache()

{

ContentTagManagerCache.Clear();

}

public static bool IsExists(int siteId, string groupName)

{

var list = GetContentTagInfoList(siteId);

return list.Any(group => group.TagName == groupName);

}

public static ContentTagInfo GetContentTagInfo(int siteId, string groupName)

{

var list = GetContentTagInfoList(siteId);

return list.FirstOrDefault(group => group.TagName == groupName);

}

public static List<string> GetTagNameList(int siteId)

{

var list = GetContentTagInfoList(siteId);

return list.Select(group => group.TagName).ToList();

}

public static List<ContentTagInfo> GetContentTagInfoList(int siteId)

{

List<ContentTagInfo> list = null;

var dict = ContentTagManagerCache.GetAllContentTags();

if (dict != null && dict.ContainsKey(siteId))

{

list = dict[siteId];

}

return list ?? new List<ContentTagInfo>();

}

}

}