1 files changed, 123 insertions, 0 deletions
diff --git a/dsa/FireBase/Http/HttpClientExtensions.cs b/dsa/FireBase/Http/HttpClientExtensions.cs
new file mode 100644
index 0000000..6582769
--- /dev/null
+++ b/dsa/FireBase/Http/HttpClientExtensions.cs
@@ -0,0 +1,123 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+
+namespace Firebase.Database.Http
+{
+    /// <summary>
+    ///     The http client extensions for object deserializations.
+    /// </summary>
+    internal static class HttpClientExtensions
+    {
+        /// <summary>
+        ///     The get object collection async.
+        /// </summary>
+        /// <param name="client"> The client. </param>
+        /// <param name="requestUri"> The request uri. </param>
+        /// <param name="jsonSerializerSettings"> The specific JSON Serializer Settings. </param>
+        /// <typeparam name="T"> The type of entities the collection should contain. </typeparam>
+        /// <returns> The <see cref="Task" />. </returns>
+        public static async Task<IReadOnlyCollection<FirebaseObject<T>>> GetObjectCollectionAsync<T>(
+            this HttpClient client, string requestUri,
+            JsonSerializerSettings jsonSerializerSettings)
+        {
+            var responseData = string.Empty;
+            var statusCode = HttpStatusCode.OK;
+
+            try
+            {
+                var response = await client.GetAsync(requestUri).ConfigureAwait(false);
+                statusCode = response.StatusCode;
+                responseData = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
+
+                response.EnsureSuccessStatusCode();
+
+                var dictionary =
+                    JsonConvert.DeserializeObject<Dictionary<string, T>>(responseData, jsonSerializerSettings);
+
+                if (dictionary == null) return new FirebaseObject<T>[0];
+
+                return dictionary.Select(item => new FirebaseObject<T>(item.Key, item.Value)).ToList();
+            }
+            catch (Exception ex)
+            {
+                throw new FirebaseException(requestUri, string.Empty, responseData, statusCode, ex);
+            }
+        }
+
+        /*/// <summary>
+        /// The get object collection async.
+        /// </summary>
+        /// <param name="client"> The client. </param>
+        /// <param name="requestUri"> The request uri. </param>
+        /// /// <param name="dataType"> The Data Type. </param>  
+        /// <param name="jsonSerializerSettings"> The specific JSON Serializer Settings. </param>  
+        /// <typeparam name="T"> The type of entities the collection should contain. </typeparam>
+        /// <returns> The <see cref="Task"/>. </returns>
+        public static async Task<IReadOnlyCollection<FirebaseObject<object>>> GetObjectCollectionAsync(this HttpClient client, string requestUri,
+            JsonSerializerSettings jsonSerializerSettings, Type dataType)
+        {
+            var responseData = string.Empty;
+            var statusCode = HttpStatusCode.OK;
+
+            try
+            {
+                var response = await client.GetAsync(requestUri).ConfigureAwait(false);
+                statusCode = response.StatusCode;
+                responseData = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
+
+                response.EnsureSuccessStatusCode();
+
+                Type dicType = typeof(Dictionary<,>).MakeGenericType(typeof(string), dataType);
+
+                var dictionary = JsonConvert.DeserializeObject(responseData,dicType, jsonSerializerSettings) as Dictionary<string, object>;
+
+                if (dictionary == null)
+                {
+                    return new FirebaseObject<object>[0];
+                }
+
+                return dictionary.Select(item => new FirebaseObject<object>(item.Key, item.Value)).ToList();
+            }
+            catch (Exception ex)
+            {
+                throw new FirebaseException(requestUri, string.Empty, responseData, statusCode, ex);
+            }
+        }*/
+
+        /// <summary>
+        ///     The get object collection async.
+        /// </summary>
+        /// <param name="data"> The json data. </param>
+        /// <param name="elementType"> The type of entities the collection should contain. </param>
+        /// <returns> The <see cref="Task" />.  </returns>
+        public static IEnumerable<FirebaseObject<object>> GetObjectCollection(this string data, Type elementType)
+        {
+            var dictionaryType = typeof(Dictionary<,>).MakeGenericType(typeof(string), elementType);
+            IDictionary dictionary = null;
+
+            if (data.StartsWith("["))
+            {
+                var listType = typeof(List<>).MakeGenericType(elementType);
+                var list = JsonConvert.DeserializeObject(data, listType) as IList;
+                dictionary = Activator.CreateInstance(dictionaryType) as IDictionary;
+                var index = 0;
+                foreach (var item in list) dictionary.Add(index++.ToString(), item);
+            }
+            else
+            {
+                dictionary = JsonConvert.DeserializeObject(data, dictionaryType) as IDictionary;
+            }
+
+            if (dictionary == null) yield break;
+
+            foreach (DictionaryEntry item in dictionary)
+                yield return new FirebaseObject<object>((string) item.Key, item.Value);
+        }
+    }
+}
+\ No newline at end of file