Combining repos

Essentials/PepperDashEssentials/Config/ConfigReader.cs

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+using System;
+using System.Linq;
+using Crestron.SimplSharp;
+using Crestron.SimplSharp.CrestronIO;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using PepperDash.Core;
+using PepperDash.Essentials.Core.Config;
+
+namespace PepperDash.Essentials
+{
+	/// <summary>
+	/// Loads the ConfigObject from the file
+	/// </summary>
+	public class ConfigReader
+	{
+		public static EssentialsConfig ConfigObject { get; private set; }
+
+		public static void LoadConfig2()
+		{
+			Debug.Console(0, "Using unmerged system/template configs.");
+			try
+			{
+				using (StreamReader fs = new StreamReader(string.Format(@"\NVRAM\program{0}\ConfigurationFile.json", InitialParametersClass.ApplicationNumber)))
+				{
+					var doubleObj = JObject.Parse(fs.ReadToEnd());
+					ConfigObject = MergeConfigs(doubleObj).ToObject<EssentialsConfig>();
+				}
+			}
+			catch (Exception e)
+			{
+				Debug.Console(0, "Config failed: \r{0}", e);
+			}
+
+		}
+
+		static JObject MergeConfigs(JObject doubleConfig)
+		{
+			var system = JObject.FromObject(doubleConfig["system"]);
+			var template = JObject.FromObject(doubleConfig["template"]);
+			var merged = new JObject();
+
+			// Put together top-level objects
+			if (system["info"] != null)
+				merged.Add("info", Merge(template["info"], system["info"]));
+			else
+				merged.Add("info", template["info"]);
+
+			merged.Add("devices", MergeArraysOnTopLevelProperty(template["devices"] as JArray, system["devices"] as JArray, "uid"));
+
+			if (system["rooms"] == null)
+				merged.Add("rooms", template["rooms"]);
+			else
+				merged.Add("rooms", MergeArraysOnTopLevelProperty(template["rooms"] as JArray, system["rooms"] as JArray, "key"));
+
+			if (system["sourceLists"] == null)
+				merged.Add("sourceLists", template["sourceLists"]);
+			else
+				merged.Add("sourceLists", Merge(template["sourceLists"], system["sourceLists"]));
+
+#warning Make tie lines merge appropriately
+			if (template["tieLines"] != null)
+				merged.Add("tieLines", template["tieLines"]);
+			else if (system["tieLines"] != null)
+				merged.Add("tieLines", system["tieLines"]);
+			else
+				merged.Add("tieLines", new JArray());
+
+			Debug.Console(0, "MERGED RESULT: \x0d\x0a{0}", merged);
+			return merged;
+		}
+
+		/// <summary>
+		/// Merges the contents of a base and a delta array, matching the entries on a top-level property
+		/// given by propertyName.  Returns a merge of them. Items in the delta array that do not have
+		/// a matched item in base array will not be merged. 
+		/// </summary>
+		static JArray MergeArraysOnTopLevelProperty(JArray a1, JArray a2, string propertyName)
+		{
+			var result = new JArray();
+			if (a2 == null)
+				result = a1;
+			else if (a1 != null)
+			{
+				for (int i = 0; i < a1.Count(); i++)
+				{
+					var a1Dev = a1[i];
+					// Try to get a system device and if found, merge it onto template
+					var a2Match = a2.FirstOrDefault(t => t[propertyName].Equals(a1Dev[propertyName]));// t.Value<int>("uid") == tmplDev.Value<int>("uid"));
+					if (a2Match != null)
+					{
+						var mergedItem = Merge(a1Dev, a2Match);// Merge(JObject.FromObject(a1Dev), JObject.FromObject(a2Match));
+						result.Add(mergedItem);
+					}
+					else
+						result.Add(a1Dev);
+				}
+			}
+			return result;
+		}
+
+
+		/// <summary>
+		/// Helper for using with JTokens.  Converts to JObject 
+		/// </summary>
+		static JObject Merge(JToken t1, JToken t2)
+		{
+			return Merge(JObject.FromObject(t1), JObject.FromObject(t2));
+		}
+
+		/// <summary>
+		/// Merge b ONTO a
+		/// </summary>
+		/// <param name="a"></param>
+		/// <param name="b"></param>
+		static JObject Merge(JObject o1, JObject o2)
+		{
+			//Console.WriteLine("Merging {0}\ronto {1}", o2, o1);
+			foreach (var o2Prop in o2)
+			{
+				var o1Value = o1[o2Prop.Key];
+				if (o1Value == null)
+					o1.Add(o2Prop.Key, o2Prop.Value);
+				else
+				{
+					JToken replacement = null;
+					if (o2Prop.Value.HasValues && o1Value.HasValues) // Drill down
+						replacement = Merge(JObject.FromObject(o1Value), JObject.FromObject(o2Prop.Value));
+					else
+						replacement = o2Prop.Value;
+					o1[o2Prop.Key].Replace(replacement);
+				}
+			}
+			return o1;
+		}
+
+	}
+}