Initial upload

api/server/Steam.cs

@@ -0,0 +1,45 @@
+using System.Net.Http;
+using System.Threading.Tasks;
+using Newtonsoft.Json.Linq;
+
+namespace Rec_rewild_live_rewrite.api.server
+{
+    public class Steam
+    {
+        private static readonly HttpClient _http = new HttpClient();
+
+        public static async Task<SteamAccountInfo?> GetAccountInfoAsync(string steamId64)
+        {
+            if (string.IsNullOrWhiteSpace(steamId64))
+                return null;
+
+            var url = $"https://api.steampowered.com/ISteamUser/GetPlayerSummaries/v0002/?key={ConfigRewild.SteamAPIKey}&steamids={steamId64}";
+
+            var response = await _http.GetAsync(url);
+            if (!response.IsSuccessStatusCode)
+                return null;
+
+            var json = JObject.Parse(await response.Content.ReadAsStringAsync());
+
+            var player = json["response"]?["players"]?.First;
+            if (player == null)
+                return null;
+
+            return new SteamAccountInfo
+            {
+                SteamId = steamId64,
+                PersonaName = player["personaname"]?.ToString(),
+                ProfileUrl = player["profileurl"]?.ToString(),
+                Avatar = player["avatarfull"]?.ToString()
+            };
+        }
+    }
+
+    public class SteamAccountInfo
+    {
+        public string SteamId { get; set; } = "";
+        public string? PersonaName { get; set; }
+        public string? ProfileUrl { get; set; }
+        public string? Avatar { get; set; }
+    }
+}