Examples/Catalog/QueryingCatalog.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
namespace Astra.Examples {
 
    public class QueryingCatalog : MonoBehaviour {
 
        public ulong startingGuid = 0;
        private HashSet<ulong> seen = new HashSet<ulong>(); //maintain a list to prevent recursive looping
        private HashSet<string> discoveredAssetGuids = new HashSet<string>();
 
        void Start () {
 
            Fetch(startingGuid);
        }
 
        public Net.GetAssetCategoryJob Fetch(ulong catId)
        {
            //avoid recursive loops
            if(seen.Contains(catId))
            {
                return null;
            }
            seen.Add(catId);
 
            bool withThumbnails = true;
 
            var job = Catalog.GetAssetCategory((long)catId, withThumbnails);
 
            Texture2D icon = null;
 
            //if we don't care about the thumbnails we could just use OnJobDone instead 
            job.OnJobDoneMain += (_) => 
            {
 
                //result is a sorted dictionary keyed on the id of the category with the value being more data
                var result = job.GetResult();
                foreach(var kvp in result)
                {
                    var assetCategory = kvp.Value;
 
                    if(withThumbnails){
                        icon = assetCategory.icon;
                    }
 
                    Astra.Logger.Log("Category Id: " + kvp.Key + " name: " + assetCategory.title + " visible: " + assetCategory.visible);
 
                    //This asset list is the assets directly IN this category, not all child assets
                    for(int i=0;i<assetCategory.assetGUIDs.Count;i++)
                    {
                        var guid = assetCategory.assetGUIDs[i];
                        //we only get the guid, no other info
 
                        Astra.Logger.Log("Asset: " + i + " => " + guid);
 
                        discoveredAssetGuids.Add(guid);
                    }
 
                    for(int i=0;i<assetCategory.childrenIDs.Count;i++)
                    {
                        var guid = assetCategory.childrenIDs[i];
                        
                        Astra.Logger.Log("Child cat: " + i + " => " + guid);
 
                        Fetch(guid);
                    }
                }
            };
 
            return job;
        }
    }
 
}