Re-add missing changes from a previous pull request.

Author: Justin

SteamWebAPI2/Interfaces/ISteamUser.cs

@@ -1,5 +1,4 @@
 using Steam.Models.SteamCommunity;
-using SteamWebAPI2.Models.SteamCommunity;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 
@@ -15,6 +14,8 @@ public interface ISteamUser
 
         Task<PlayerSummaryModel> GetPlayerSummaryAsync(long steamId);
 
+        Task<List<PlayerSummaryModel>> GetPlayerSummariesAsync(List<long> steamIds);
+
         Task<IReadOnlyCollection<long>> GetUserGroupsAsync(long steamId);
 
         Task<ulong> ResolveVanityUrlAsync(string vanityUrl, int? urlType = default(int?));

SteamWebAPI2/Interfaces/SteamUser.cs

@@ -43,6 +43,20 @@ public async Task<PlayerSummaryModel> GetPlayerSummaryAsync(long steamId)
             }
         }
 
+        public async Task<List<PlayerSummaryModel>> GetPlayerSummariesAsync(List<long> steamIds)
+        {
+            // convert steam ids to a csv for the api
+            var steamIdsCsv = string.Join(",", steamIds.Select(x => x.ToString()).ToArray());
+            var parameters = new List<SteamWebRequestParameter>();
+            parameters.AddIfHasValue(steamIdsCsv, "steamids");
+
+            var playerSummaries = await CallMethodAsync<PlayerSummaryResultContainer>("GetPlayerSummaries", 2, parameters);
+            if (playerSummaries.Result.Players != null && playerSummaries.Result.Players.Count > 0)
+                return playerSummaries.Result.Players.Select(player => AutoMapperConfiguration.Mapper.Map<PlayerSummary, PlayerSummaryModel>(player)).ToList();
+
+            return null;
+        }
+
         /// <summary>
         /// Returns a collection of a specific Steam User's friends list.
         /// </summary>

SteamWebAPI2/Interfaces/SteamWebAPIUtil.cs

@@ -12,6 +12,10 @@ public SteamWebAPIUtil(string steamWebApiKey)
             : base(steamWebApiKey, "ISteamWebAPIUtil")
         { }
 
+        /// <summary>
+        /// Returns the Steam Servers' known dates and times.
+        /// </summary>
+        /// <returns></returns>
         public async Task<SteamServerInfoModel> GetServerInfoAsync()
         {
             var steamServerInfo = await CallMethodAsync<SteamServerInfo>("GetServerInfo", 1);
@@ -21,6 +25,10 @@ public async Task<SteamServerInfoModel> GetServerInfoAsync()
             return steamServerInfoModel;
         }
 
+        /// <summary>
+        /// Returns a collection of data related to all available supported Steam Web API endpoints.
+        /// </summary>
+        /// <returns></returns>
         public async Task<IReadOnlyCollection<SteamInterfaceModel>> GetSupportedAPIListAsync()
         {
             var steamApiListContainer = await CallMethodAsync<SteamApiListContainer>("GetSupportedAPIList", 1);