Initial Commit ...

2024-01-25 04:47:14 +03:30
commit d862146642
37 changed files with 4039 additions and 0 deletions
@@ -0,0 +1,157 @@
+using System.Collections.Generic;
+using System.Linq;
+using xCommons.Extensions;
+using xPushService.Models;
+
+namespace xPushService.Extensions {
+    public static class XWebRTCConnectionExtensions {
+        /// <summary>
+        /// Validate Connection ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static bool IsValid (this XWebRTCConnectionDto source) {
+            //
+            var result = false;
+            result = !source
+                .IsNull () && !source.CallerConnectionId
+                .IsNullOrEmpty () && (
+                    source.Callees
+                    .HasChild () ? source.Callees
+                    .All (callee => !callee.ConnectionId.IsNullOrDefault ()) :
+                    true
+                );
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Check a ConnectionId is Caller of a connection ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <param name="connectionId"></param>
+        /// <returns></returns>
+        public static bool IsCaller (
+            this XWebRTCConnectionDto source,
+            string connectionId
+        ) {
+            //
+            var result = false;
+
+            //
+            // Validate Args ...
+            if (!source.IsValid () ||
+                connectionId.IsNullOrEmpty ()
+            ) {
+                return result;
+            }
+
+            //
+            result = connectionId
+                .ToNormalString () == source.CallerConnectionId
+                .ToNormalString ();
+            return result;
+        }
+
+        /// <summary>
+        /// Check a ConnectionId is in Callees of a connection ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <param name="connectionId"></param>
+        /// <returns></returns>
+        public static bool IsInCallees (
+            this XWebRTCConnectionDto source,
+            string connectionId
+        ) {
+            //
+            var result = false;
+
+            //
+            // Validate Args ...
+            if (!source.IsValid () ||
+                !source.Callees.HasChild () ||
+                connectionId.IsNullOrEmpty ()
+            ) {
+                return result;
+            }
+
+            //
+            result = source.Callees.Any (callee => callee.ConnectionId
+                .ToNormalString () == connectionId
+                .ToNormalString ());
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Get Receivers ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <returns></returns>
+        public static IReadOnlyList<string> GetReceivers (this XWebRTCConnectionDto source) {
+            //
+            var result = new List<string> ();
+
+            //
+            // Validate Args ...
+            if (!source.IsValid ()) {
+                return result;
+            }
+
+            //
+            // Add Caller ...
+            result.Add (source.CallerConnectionId);
+
+            //
+            // Add Callees ...
+            source.Callees
+                .ToList ()
+                .ForEach (callee => {
+                    result.Add (callee.ConnectionId);
+                });
+
+            //
+            return result;
+        }
+
+        /// <summary>
+        /// Retrieve Callee from Callees ...
+        /// </summary>
+        /// <param name="source"></param>
+        /// <param name="connectionId"></param>
+        /// <returns></returns>
+        public static XWebRTCCalleeDto GetCallee (
+            this XWebRTCConnectionDto source,
+            string connectionId
+        ) {
+            //
+            // Validate Args ...
+            if (!source.IsValid () ||
+                connectionId.IsNullOrEmpty ()
+            ) {
+                return null;
+            }
+
+            //
+            // Check Connection Id is In Callees or not ...
+            var isInCallees = source.IsInCallees (connectionId);
+            if (!isInCallees) {
+                return null;
+            }
+
+            //
+            // retrieve result ...
+            var result = source.Callees
+                .FirstOrDefault (callee => callee.ConnectionId
+                    .ToNormalString () == connectionId
+                    .ToNormalString ()
+                );
+
+            //
+            // return result ...
+            return result;
+        }
+    }
+}