Add project files.

Payments/IPaymentWrapper.cs

@@ -0,0 +1,72 @@
+using SPWorldsApi.Types.Interfaces;
+using SPWorldsApi.Utils;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+
+namespace SPWorldsApi.Payments
+{
+    internal interface IPaymentWrapper
+    {
+        HttpClient.HttpRequest client { get; set; }
+
+        internal async Task<string> SendRequest(string endpoint, HttpMethod method = null, object body = null)
+        {
+            return await client.SendRequest(endpoint, method, body);  
+        }
+
+        /// <summary>
+        /// Get card from spworlds
+        /// </summary>
+        /// <returns></returns>
+        public async Task<ICard> GetCard()
+        => (await SendRequest("card")).Deserialize<ICard>();
+
+        /// <summary>
+        /// Create transaction
+        /// </summary>
+        /// <param name="receiver">receiver card</param>
+        /// <param name="amount">amount of AR</param>
+        /// <param name="comment">comment to transaction</param>
+        /// <returns>balance of card</returns>
+        public async Task<int> CreateTransaction(string receiver, int amount, string comment)
+        {
+            var transitionInfo = new Dictionary<string, object>
+        {
+            { "receiver", receiver },
+            { "amount", amount },
+            { "comment", comment }
+        };
+
+            var response = JsonNode.Parse(await SendRequest(endpoint: "transactions", body: transitionInfo));
+            return (int)response["balance"];
+        }
+
+        public async Task<string> InitPayment(IPaymentItems[] items, string redirectUrl, string webhookUrl, string data)
+        {
+            var paymentInfo = new Dictionary<string, object>
+        {
+            { "items", JsonSerializer.Serialize(items).ToLower()},
+            { "redirectUrl", redirectUrl },
+            { "webhookUrl", webhookUrl },
+            { "data", data }
+        };
+
+            var payment = JsonObject.Parse(await SendRequest(endpoint: $"payment", body: paymentInfo));
+            var url = payment["url"];
+
+            return (string)url;
+        }
+
+        /// <summary>
+        /// Create payment url
+        /// </summary>
+        /// <param name="paymentData"></param>
+        /// <returns></returns>
+        public async Task<string> InitPayment(IPaymentData paymentData)
+        {
+            var payment = JsonObject.Parse(await SendRequest(endpoint: $"payment", body: JsonSerializer.Serialize(paymentData)));
+            return (string)payment["url"];
+        }
+
+    }
+}