Native typed dto special get event logs fn (#97)

Author: 0xFirekeeper

Assets/Thirdweb/Core/Scripts/Contract.cs

@@ -8,6 +8,9 @@
 using Nethereum.ABI.FunctionEncoding;
 using System.Linq;
 using System;
+using Nethereum.Contracts;
+using Nethereum.RPC.Eth.DTOs;
+using Nethereum.ABI.FunctionEncoding.Attributes;
 
 namespace Thirdweb
 {
@@ -143,6 +146,23 @@ public List<ParameterOutput> Decode(string functionName, string encodedArgs)
             return function.DecodeInput(encodedArgs);
         }
 
+        /// <summary>
+        /// Get the events of a contract. For WebGL use contract.Events class instead.
+        /// <returns>A list of <see cref="EventLog"/> (extending IEventDTO) objects representing the events.</returns>
+        /// </summary>
+        public async Task<List<EventLog<TEventDTO>>> GetEventLogs<TEventDTO>(ulong? fromBlock = null, ulong? toBlock = null)
+            where TEventDTO : IEventDTO, new()
+        {
+            var web3 = new Web3(ThirdwebManager.Instance.SDK.session.RPC);
+            var transferEventHandler = web3.Eth.GetEvent<TEventDTO>(this.address);
+            var filter = transferEventHandler.CreateFilterInput(
+                fromBlock: fromBlock == null ? BlockParameter.CreateEarliest() : new BlockParameter(fromBlock.Value),
+                toBlock: toBlock == null ? BlockParameter.CreateLatest() : new BlockParameter(toBlock.Value)
+            );
+            var allTransferEventsForContract = await transferEventHandler.GetAllChangesAsync(filter);
+            return allTransferEventsForContract;
+        }
+
         /// <summary>
         /// Execute a write transaction on a contract.
         /// </summary>

Assets/Thirdweb/Examples/Scripts/Prefabs/Prefab_Events.cs

@@ -1,8 +1,11 @@
 using System.Collections.Generic;
 using UnityEngine;
 using Thirdweb;
+using Nethereum.ABI.FunctionEncoding.Attributes;
+using System.Numerics;
+using Newtonsoft.Json;
 
-// Your Event data structure
+// Your Event type (WebGL)
 [System.Serializable]
 public struct TransferEvent
 {
@@ -12,7 +15,26 @@ public struct TransferEvent
 
     public override string ToString()
     {
-        return $"TransferEvent:" + $"\n>prevURI: {from}" + $"\n>newURI: {to}" + $"\n>tokenId: {tokenId}";
+        return $"TransferEvent:" + $"\n>from: {from}" + $"\n>to: {to}" + $"\n>tokenId: {tokenId}";
+    }
+}
+
+// Your Event type (Native platforms)
+[Event("Transfer")]
+public class TransferEventDTO : IEventDTO
+{
+    [Parameter("address", "from", 1, true)]
+    public string From { get; set; }
+
+    [Parameter("address", "to", 2, true)]
+    public string To { get; set; }
+
+    [Parameter("uint256", "tokenId", 3, true)]
+    public BigInteger TokenId { get; set; }
+
+    public override string ToString()
+    {
+        return $"TransferEvent:" + $"\n>from: {From}" + $"\n>to: {To}" + $"\n>tokenId: {TokenId}";
     }
 }
 
@@ -26,12 +48,24 @@ public async void GetEvents()
         {
             Contract contract = ThirdwebManager.Instance.SDK.GetContract("0x2e01763fA0e15e07294D74B63cE4b526B321E389");
 
-            // Optional event query options
-            Dictionary<string, object> filters = new Dictionary<string, object> { { "tokenId", 20 } };
-            EventQueryOptions options = new EventQueryOptions(filters);
+            if (Utils.IsWebGLBuild())
+            {
+                // Optional event query options
+                Dictionary<string, object> filters = new Dictionary<string, object> { { "tokenId", 20 } };
+                EventQueryOptions options = new EventQueryOptions(filters);
+
+                List<ContractEvent<TransferEvent>> allEvents = await contract.events.Get<TransferEvent>("Transfer", options);
+                Debugger.Instance.Log("[Get Events] Get - TransferEvent #1", allEvents[0].ToString());
+            }
+            else
+            {
+                // Optional event query options
+                ulong? fromBlock = null;
+                ulong? toBlock = null;
 
-            List<ContractEvent<TransferEvent>> allEvents = await contract.events.Get<TransferEvent>("Transfer", options);
-            Debugger.Instance.Log("[Get Events] Get - TransferEvent #1", allEvents[0].ToString());
+                var allEvents = await contract.GetEventLogs<TransferEventDTO>(fromBlock, toBlock);
+                Debugger.Instance.Log("[Get Events] Get - TransferEvent #1", allEvents[0].Event.ToString());
+            }
         }
         catch (System.Exception e)
         {