feat: add DataManager, remote opcodes etc.

Dalamud/Data/DataManager.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Net;
+using System.Net.Http;
+using System.Threading.Tasks;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using Serilog;
+
+namespace Dalamud.Data
+{
+    /// <summary>
+    /// This class provides data for Dalamud-internal features, but can also be used by plugins if needed.
+    /// </summary>
+    public class DataManager {
+        private const string DataBaseUrl = "https://goaaats.github.io/ffxiv/tools/launcher/addons/Hooks/Data/";
+
+        public ReadOnlyDictionary<string, ushort> OpCodes;
+        public ReadOnlyDictionary<uint, JObject> ContentFinderCondition;
+
+        public DataManager() {
+            // Set up default values so plugins do not null-reference when data is being loaded.
+            this.OpCodes = new ReadOnlyDictionary<string, ushort>(new Dictionary<string, ushort>());
+            this.ContentFinderCondition = new ReadOnlyDictionary<uint, JObject>(new Dictionary<uint, JObject>());
+        }
+
+        public async Task Initialize() {
+            Log.Verbose("Starting data download...");
+
+            // This is due to GitHub not supporting TLS 1.0
+            System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
+
+            using var client = new HttpClient() {
+                BaseAddress = new Uri(DataBaseUrl)
+            };
+
+            var opCodeDict = JsonConvert.DeserializeObject<Dictionary<string, ushort>>(await client.GetStringAsync(DataBaseUrl + "opcode.json"));
+            this.OpCodes = new ReadOnlyDictionary<string, ushort>(opCodeDict);
+
+            Log.Verbose("Loaded {0} OpCodes.", opCodeDict.Count);
+
+            var cfcs = JsonConvert.DeserializeObject<Dictionary<uint, JObject>>(await client.GetStringAsync(DataBaseUrl + "contentfindercondition.json"));
+            this.ContentFinderCondition = new ReadOnlyDictionary<uint, JObject>(cfcs);
+
+            Log.Verbose("Loaded {0} ContentFinderCondition.", cfcs.Count);
+
+            System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.SystemDefault;
+        }
+    }
+}