Add project files.

Services/SkinService.cs

@@ -0,0 +1,48 @@
+using SkinsApi.Interfaces.Services;
+using SkinsApi.Interfaces.SkinService;
+using SkinsApi.Models;
+using SkinsApi.Models.SkinService;
+using SkinsApi.Sources;
+using System.Buffers.Text;
+using System.Drawing;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace SkinsApi.Services
+{
+    public class SkinService (HttpClient client): ISkinService
+    {
+        private async Task<IProfile> GetProfileByNicknameAsync(string nickname)
+        {
+            return await client.GetFromJsonAsync<MojangProfile>(Startup.PROFILE_MOJANG_API + nickname);
+        }
+        private async Task<string> GetUuidFromDeparsedData(string data)
+        {
+            if (data.Length < 25)
+            {
+                return (await GetProfileByNicknameAsync(data)).id;
+            }
+            else
+            {
+                return data;
+            }
+        }
+        private async Task<DecodedSkinProperty> GetSkinProperty(string uuid)
+        {
+            var base64EncodedSkinProperty = await client.GetFromJsonAsync<MojangSessionProperty>(Startup.SESSION_MOJANG_API + uuid);
+            var content = base64EncodedSkinProperty.properties.First().value;
+            byte[] data = Convert.FromBase64String(content);
+            string decodedString = Encoding.UTF8.GetString(data);
+            return JsonSerializer.Deserialize<DecodedSkinProperty>(decodedString);
+        }
+        public async Task<Skin> GetSkinStreamAsync(string data)
+        {    
+            var uuid = await GetUuidFromDeparsedData(data);
+            var skinproperty = await GetSkinProperty(uuid);
+            var rq = await client.GetAsync(skinproperty.Textures.SKIN.Url);
+            return new Skin(rq.Content.ReadAsStream(), skinproperty.Textures.SKIN.Metadata?.Model == "slim");
+        }
+        
+    }
+}