Implemented PoiJsonPreloader

Assets/RothenburgAR/Scripts/PointOfInterest/PoiJsonPreloader.cs

@@ -3,7 +3,9 @@ using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Xml;
+using Newtonsoft.Json;
 using RothenburgAR.Common;
+using RothenburgAR.Updater;
 using UnityEngine;
 
 namespace RothenburgAR.PointOfInterest
@@ -12,9 +14,6 @@ namespace RothenburgAR.PointOfInterest
     {
         public bool CanLoadPoiDirectory(string poiDirectory)
         {
-            //TODO remove
-            return false;
-
             if (!Directory.Exists(poiDirectory))
                 return false;
 
@@ -32,91 +31,65 @@ namespace RothenburgAR.PointOfInterest
 
         public List<PoiData> PreloadPoi(string poiDirectory)
         {
-            throw new System.NotImplementedException();
+            List<PoiData> preloadedPois = new List<PoiData>();
-            string xmlFilePath = PathHelper.GetXmlPathFromDirectoryPath(poiDirectory);
+            Dictionary<string, List<Exhibit>> exhibits = new Dictionary<string, List<Exhibit>>();
 
-            if (!File.Exists(xmlFilePath))
+            var languageDirs = new DirectoryInfo(poiDirectory).GetDirectories().Select(d => d.Name).ToList();
-                throw new FileNotFoundException(xmlFilePath);
+            foreach (var lang in languageDirs)
+            {
+                var metaFilePath = PathHelper.CombinePaths(poiDirectory, lang, "meta.json");
+                if (!File.Exists(metaFilePath)) continue;
+                var exhibitList = JsonConvert.DeserializeObject<List<Exhibit>>(File.ReadAllText(metaFilePath, System.Text.Encoding.UTF8));
+                exhibits.Add(lang, exhibitList);
+            }
 
-            XmlDocument doc = new XmlDocument();
+            var poiIds = exhibits.Values.SelectMany(l => l.SelectMany(e => e.Pois.Select(p => p.Id))).Distinct().ToList();
-            doc.Load(xmlFilePath);
 
+            Dictionary<string, List<Poi>> poisPerLang = new Dictionary<string, List<Poi>>();
+            exhibits.Keys.ToList().ForEach(k => poisPerLang.Add(k, exhibits[k].SelectMany(l => l.Pois.Select(p => p)).Distinct().ToList()));
 
-            // Read the ID from the xml
+            foreach (var poiID in poiIds)
-            if (doc.DocumentElement == null || doc.DocumentElement.Attributes == null ||
+            {
-                doc.DocumentElement.Attributes["id"] == null)
+                TextElement descElement = new TextElement();
-                throw new InvalidXMLException("Could not read doc.DocumentElement.Attributes['id] ");
+                TextElement titleElement = new TextElement();
+                string mediaID = null;
 
-            string poiId = doc.DocumentElement.Attributes["id"].Value;
+                foreach (var poiPerLang in poisPerLang)
-
+                {
-            // Read the description from the xml
+                    var poi = poiPerLang.Value.FirstOrDefault(p => p.Id == poiID);
-            XmlNodeList descNodes = doc.SelectNodes("//poi/description/text");
+                    if (poi == null) continue;
-            TextElement descElement = TextElement.BuildFromXmlNode(poiDirectory, descNodes);
-
-            // Read the title from the xml
-            XmlNodeList titleNodes = doc.SelectNodes("//poi/title/text");
-            TextElement titleElement = TextElement.BuildFromXmlNode(poiDirectory, titleNodes);
 
+                    descElement.AddTextElement(poiPerLang.Key, TextEntryType.Inline, poi.Description);
+                    titleElement.AddTextElement(poiPerLang.Key, TextEntryType.Inline, poi.Title);
+                    mediaID = poi.MediaId;
+                }
 
                 PoiData poiData = new PoiData
                 {
-                ID = poiId,
+                    ID = poiID,
                     Description = descElement,
                     Title = titleElement,
                     SourcePath = poiDirectory
                 };
 
-            // Read the model value
+                if (mediaID != null)
-            XmlNode modelNode = doc.SelectSingleNode("//poi/model");
-            if (modelNode != null)
                 {
-                var pathNode = modelNode.SelectSingleNode("path");
+                    var modelDescription = new PoiModelDescription();
-                var scaleNode = modelNode.SelectSingleNode("scale");
+                    modelDescription.ModelPath = mediaID;
-                var rotationNode = modelNode.SelectSingleNode("rotation");
-                var positionNode = modelNode.SelectSingleNode("position");
 
-                var poiModelDescription = new PoiModelDescription
+                    //TODO dont have model size information, find a way to scale model to fit into view?
-                {
+                    modelDescription.ModelPrefabName = string.Empty;
-                    ModelPath = Path.Combine(poiDirectory, pathNode.Attributes["value"].Value),
+                    modelDescription.Scale = Vector3.one;
-                    ModelPrefabName = pathNode.Attributes["prefabName"].Value,
+                    modelDescription.Position = Vector3.zero;
-                    Scale = GetVector3FromXmlNode(scaleNode).GetValueOrDefault(Vector3.one),
+                    modelDescription.Rotation = Vector3.zero;
-                    Rotation = GetVector3FromXmlNode(rotationNode).GetValueOrDefault(Vector3.zero),
+
-                    Position = GetVector3FromXmlNode(positionNode).GetValueOrDefault(Vector3.zero)
+                    poiData.ModelDescription = modelDescription;
-                };
-                poiData.ModelDescription = poiModelDescription;
-            }
-            return new List<PoiData> { poiData };
                 }
 
-        private Vector3? GetVector3FromXmlNode(XmlNode node)
+                preloadedPois.Add(poiData);
-        {
-            if (node == null)
-                return null;
-            if (node.Attributes == null)
-                return null;
-            if (node.Attributes["x"] == null)
-                return null;
-            if (node.Attributes["y"] == null)
-                return null;
-            if (node.Attributes["z"] == null)
-                return null;
-
-            try
-            {
-                float posX = float.Parse(node.Attributes["x"].Value,
-                    CultureInfo.InvariantCulture.NumberFormat);
-                float posY = float.Parse(node.Attributes["y"].Value,
-                    CultureInfo.InvariantCulture.NumberFormat);
-                float posZ = float.Parse(node.Attributes["z"].Value,
-                    CultureInfo.InvariantCulture.NumberFormat);
-
-                return new Vector3(posX, posY, posZ);
-            }
-            catch
-            {
-                // TODO: log error
-                return null;
             }
+
+            return preloadedPois;
         }
     }
 }